XSol Diagnostic System

Interactive Test Sequence Navigator

Welcome to the XSol Diagnostic System

This system provides interactive diagnostic tests with proper sequence navigation based on the decoded .seq file logic.

Start Diagnostic Sequence

or choose a specific test below:

WORCESTER GREENSTAR COMPACT SYSTEM

GLOBALLY REPLACED

Next: &400, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

OBSERVATION BOILER SELF CHECK

ENSURE NO DEMANDS

Next: &38, ?411, ?2293, ?2307

OBSERVATION PUMP RUNS

CH TEMPERATURE CONTROL SET TO MAX

Next: &57, f3285

OBSERVATION FAN RUNS

CH TEMPERATURE CONTROL SET TO MAX

Next: &176, f508

OBSERVATION BURNER IGNITION

CH TEMPERATURE CONTROL SET TO MAX

Next: &303, ?228, ?1481, ?2061, ?2119, ?2315

OPERATION DHW

CH TEMPERATURE CONTROL SET TO MAX

Next: &342, ?278, ?281

OPERATION CH

CH TEMPERATURE CONTROL TO MAX

Next: &277, ?304, ?308, ?326, ?719

OBSERVATION PUMP OVERRUN

CH TEMPERATURE CONTROL SET TO MAX

Next: &1844, ?775, ?780

WORCESTER GREENSTAR COMPACT SYSTEM

Next: &523, !f401

FAULT CODES

Next: &nff, !f410

TYPE OF DIAGNOSTIC PROCEDURE

Next: &526, !f524

OBSERVATION DISPLAY ILLUMINATES

Next: &2953, f3175

COMBI FAULT CODES H11 324 325 359 375 376 380 808 810

OUTSIDE MODEL

Next: &nff, p879

FAULT CODE 210 E9

OUTSIDE MODEL

Next: &nff, p885

FAULT CODE 221 E9

OUTSIDE MODEL

Next: &nff, p923

FAULT CODE 231 FD

OUTSIDE MODEL

Next: &nff, f931

FAULT CODE 233 9U

OUTSIDE MODEL

Next: &nff, f942

FAULT CODE 240 241 286 D1 285 E9

OUTSIDE MODEL

Next: &nff, f1002

FAULT CODE 223 E2

Next: &nff, f993

FAULT CODE 264 C1

Next: &nff, f1008

FAULT CODE 239 242-256 258 259 262 263 267 272 279 280 328 F0 257 B7 269 EA

Next: &nff, f1015

FAULT CODE 228 F7

OUTSIDE MODEL

Next: &nff, f1019

FAULT CODE H13

Next: &nff, f1034

FAULT CODE 323 A8

OUTSIDE MODEL

Next: &nff, f1161

FAULT CODE 327

Next: &nff, f1042

FAULT CODE 306 FA

Next: &nff, f1046

FAULT CODE 229 EA 374 8C

Next: &nff, f2530

FAULT CODE 260 345 EF

OUTSIDE MODEL

Next: &nff, f1416

FAULT CODE 271

Next: &nff, f1443

FAULT CODE 278 F0

Next: &nff, f1268

FURTHER INVESTIGATION FUSE PCB DUMMY

Next: &nff, f2388

FURTHER INVESTIGATION MAINS FUSE DUMMY

Next: &nff, f2407

INFORMATION BOILER SETUP PARAMETERS


1. ENTER

Next: &nff, !f1360

FAULT CODE 219 220 277 E9

OUTSIDE MODEL

Next: &nff, f1367

FAULT CODE 218 332 E5 222 E2 276 E9

OUTSIDE MODEL

Next: &nff, f1391

FAULT CODE 237 273 C4 274

Next: &nff, f1424

FAULT CODE 212

OUTSIDE MODEL

Next: &nff, f1434

FAULT CODE 373 8C

OUTSIDE MODEL

Next: &nff, f1462

INFORMATION BOILER TEST MODES


1. ENTER

Next: &nff, !f1488

FAULT CODE 800 CC

OUTSIDE MODEL

Next: &nff, f1708

COMBUSTION TEST MAX AND MINIMUM

Next: &nff, ?1846, ?1848

FAULT CODE 234 EA

OUTSIDE MODEL

Next: &nff, f2662

FAULT CODE 238 F0

OUTSIDE MODEL

Next: &nff, f2682

OBSERVATION SPARKING HEARD

CH TEMPERATURE CONTR

Next: &nff, !f2690

INFORMATION USER DISPLAY

Next: &1, !f2954

FAULT CODE 258 356 EH

OUTSIDE MODEL

Next: &nff, f3148

LITE DIAGNOSTIC

DIAGNOSIS RELIES ON

Next: &nff, !f3542

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f3544

HEADER FOR QADAI SENSOR FLOW

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3546

HEADER FOR QADAI SENSOR RETURN

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3550

HEADER FOR QADAI SENSOR SAFETY

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3554

HEADER FOR QADAI SPARK GEN RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3558

HEADER FOR QADAI SPARK GEN VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3562

HEADER FOR QADAI PUMP RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3566

HEADER FOR QADAI PUMP VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3570

HEADER FOR QADAI FAN RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3574

HEADER FOR QADAI FAN VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3578

HEADER FOR QADAI GAS VALVE RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3582

HEADER FOR QADAI GAS VALVE VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f3586

FAULT CODE 223 E2

SENSOR 18MM (FLOW)

Next: End

FAULT CODE 240 241 286 D1 285 D9

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 264 C1

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 239 242-256 258 259 262 263 267 272 328 F0 257 B7

CONTROL BOX - SKIN MID

Next: End

FAULT CODE H13

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 306 FA

FLUE

Next: End

FAULT 306 FA

SYPHON - LCS

Next: End

FAULT CODE 306 FA PASSING

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 306 FA NOT SHUTTING QUICKLY

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 327

RESET SWITCH (CONTROL BOX -SKIN MID)

Next: End

FAULT CODE 228 F7

HARNESS - LOW VOLTAGE

Next: End

FAULT 228 F7

SYPHON - LCS

Next: End

FAULT CODE 228 F7

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 323 A8 FW100 NOT FITTED

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 323 A8 FW100 FITTED

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 278 F0 RETURN SENSOR

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 278 F0

SENSOR - NTC MAX (OVERHEAT)

Next: End

FAULT CODE 278 F0

SENSOR 18MM (FLOW)

Next: End

INFORMATION BOILER SETUP PARAMETERS

Z REDIRECT

Next: End

FAULT CODE 219 220 277 E9 WILL NOT RESET

SENSOR - NTC MAX (OVERHEAT)

Next: End

FAULT CODE 219 220 227 E9 WILL NOT RESET

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 219 220 277 E9 INFORMATION BOILER OVERHEAT

Z REDIRECT

Next: End

FAULT CODE 219 220 277 E9

SYSTEM PRESSURE

Next: End

FAULT CODE 219 220 277 E9

PUMP - PWM GF 6M

Next: End

FAULT CODE 219 220 277 E9

SENSOR 18MM (FLOW)

Next: End

FAULT CODE 218 332 E5 222 E2 267 E9 WILL NOT RESET

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 218 332 E5 222 E2 267 E9 INFORMATION BOILER OVERHEAT

Z REDIRECT

Next: End

FAULT CODE 218 332 E5 222 E2 267 E9

SYSTEM PRESSURE

Next: End

FAULT CODE 218 332 E5 222 E2 267 E9

PUMP - PWM GF 6M

Next: End

FAULT CODE 218 332 E5 222 E2 267 E9

SENSOR 18MM (FLOW)

Next: End

FAULT CODE 218 332 E5 222 E2 267 E9 WILL NOT RESET

SENSOR - NTC MAX (OVERHEAT)

Next: End

FAULT CODE 260

SYSTEM PRESSURE

Next: End

FAULT CODE 260 RUNNING SLOW

PUMP - PWM GF 6M

Next: End

FAULT CODE 260

SENSOR 18MM (FLOW)

Next: End

FAULT CODE 237 273 C4 274

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 212

SENSOR 18MM (FLOW)

Next: End

FAULT CODE 212

SENSOR - NTC MAX (OVERHEAT)

Next: End

FAULT CODE 212

PUMP - PWM GF 6M

Next: End

FAULT CODE 212

SYSTEM PRESSURE

Next: End

FAULT CODE 271

SYSTEM PRESSURE

Next: End

FAULT CODE 271

PUMP - PWM GF 6M

Next: End

FAULT CODE 271

SENSOR - NTC MAX (OVERHEAT)

Next: End

FAULT CODE 271

SENSOR 18MM (FLOW)

Next: End

FAULT CODE 373 8C

Z REDIRECT

Next: End

FAULT CODE 373 8C

SYSTEM PRESSURE

Next: End

FAULT CODE 373 8C

PUMP - PWM GF 6M

Next: End

FAULT CODE 373 8C WILL NOT RESET

SENSOR - NTC MAX (OVERHEAT)

Next: End

FAULT CODE 373 8C

SENSOR 18MM (FLOW)

Next: End

OBSERVATION BURNER IGNITION IGNITES BUT CUTS OUT

SENSOR 18MM (FLOW)

Next: End

OBSERVATION BURNER IGNITION IGNITES BUT CUTS OUT

SENSOR - NTC MAX (OVERHEAT)

Next: End

INFORMATION BOILER TEST MODES

Z REDIRECT

Next: End

FAULT CODE 800 CC SENSOR NOT FITTED

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 800 CC SENSOR FITTED

CONTROL BOX - SKIN MID

Next: End

COMBUSTION TEST

ELECTRODE

Next: End

COMBUSTION TEST

PIPE - SUCTION (AIR INTAKE)

Next: End

COMBUSTION TEST

SYPHON - LCS

Next: End

OBSERVATION FAN RUNS

SENSOR 18MM (FLOW)

Next: End

OBSERVATION BURNER IGNITION DOES NOT IGNITE

SYPHON - LCS

Next: End

OBSERVATION BURNER IGNITION NO IGNITION

FLUE

Next: End

OBSERVATION BURNER IGNITION DOES NOT IGNITE

VALVE - GAS-AIR (BEARING PLATE)

Next: End

OBSERVATION BURNER IGNITION

BURNER WB7

Next: End

OBSERVATION BURNER IGNITION DOES NOT IGNITE

HEAT EXCHANGER (FLUEWAYS)

Next: End

OBSERVATION BURNER IGNITION

CONTROL BOX - SKIN MID AND GAS VALVE

Next: End

OBSERVATION BURNER IGNITION TO GAS VALVE SPARK NO IGNITION

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION BURNER IGNITION NO IGNITION

PIPE - SUCTION (AIR INTAKE)

Next: End

OBSERVATION BURNER IGNITION IGNITION LEAD

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION BURNER IGNITION SPARK BUT NO IGNITION

ELECTRODE

Next: End

OBSERVATION BURNER IGNITION NO SPARKING

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

OBSERVATION BURNER IGNITION NO POWER TO SPARK GEN

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BURNER IGNITION HARNESS TO SPARK GENERATOR NO SPARKING

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION BURNER IGNITION DOES NOT ESTABLISH

FLUE

Next: End

OBSERVATION BURNER IGNITION DOES NOT ESTABLISH

VALVE - GAS-AIR (BEARING PLATE)

Next: End

OBSERVATION BURNER IGNITION DOES NOT ESTABLISH

BURNER WB7

Next: End

OBSERVATION BURNER IGNITION DOES NOT ESTABLISH

PIPE - SUCTION (AIR INTAKE)

Next: End

OBSERVATION BURNER IGNITION NOT ESTABLISHING NO CURRENT SHORTED

ELECTRODE

Next: End

OBSERVATION BURNER IGNITION RECTIFICATION GROUND

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION BURNER IGNITION RECTIFICATION LEAD

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION BURNER IGNITION NOT ESTABLISHING NO CURRENT

ELECTRODE

Next: End

OBSERVATION BURNER IGNITION IGNITION LEAD NO SPARKING

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION BOILER SELF CHECK BOILER SELF CHECK

FROST PROTECTION

Next: End

OBSERVATION BOILER SELF CHECK FROST PROTECTION

SENSOR 18MM (FLOW)

Next: End

OBSERVATION BOILER SELF CHECK PUMP RUNS AFTER SELF CHECK

FROST PROTECTION

Next: End

OBSERVATION BOILER SELF CHECK FROST PROTECTION PUMP ONLY

SENSOR 18MM (FLOW)

Next: End

OBSERVATION BOILER SELF CHECK FROST PROTECTION FROST THERMOSTAT

Next: End

OBSERVATION BURNER IGNITION BAFFLES

SYPHON - LCS

Next: End

OBSERVATION BURNER IGNITION BAFFLES

FLUE

Next: End

OBSERVATION BURNER IGNITION BAFFLES

VALVE - GAS-AIR (BEARING PLATE)

Next: End

OBSERVATION BURNER IGNITION BAFFLES

HEAT EXCHANGER (FLUEWAYS)

Next: End

OBSERVATION BURNER IGNITION BAFFLES

PIPE - SUCTION (AIR INTAKE)

Next: End

OPERATION CH INSUFFICIENT HEAT TEMP SETTINGS

BOILER SETUP PARAMETERS

Next: End

COMBUSTION TEST MAX AND MINIMUM

BURNER WB7

Next: End

COMBUSTION TEST MAX AND MINIMUM

HEAT EXCHANGER ASSEMBLY

Next: End

FURTHER INVESTIGATION FUSE PCB

PUMP - PWM GF 6M

Next: End

FURTHER INVESTIGATION FUSE PCB

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FURTHER INVESTIGATION FUSE PCB

FAN

Next: End

FURTHER INVESTIGATION FUSE PCB

TRANSFORMER - IGNITION

Next: End

FURTHER INVESTIGATION FUSE

CONTROL BOX - SKIN MID

Next: End

FURTHER INVESTIGATION MAINS FUSE

PUMP - PWM GF 6M

Next: End

FURTHER INVESTIGATION MAINS FUSE

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FURTHER INVESTIGATION MAINS FUSE

FAN

Next: End

FURTHER INVESTIGATION MAINS FUSE

TRANSFORMER - IGNITION

Next: End

FURTHER INVESTIGATION MAINS FUSE

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 229 EA BAFFLES

SYPHON - LCS

Next: End

FAULT CODE 229 EA BAFFLES

FLUE

Next: End

FAULT CODE 229 EA BAFFLES

VALVE - GAS-AIR (BEARING PLATE)

Next: End

FAULT CODE 229 EA BAFFLES

HEAT EXCHANGER (FLUEWAYS)

Next: End

FAULT CODE 229 EA BAFFLES

PIPE - SUCTION (AIR INTAKE)

Next: End

FAULT CODE 229 EA AIR INTEGRITY BAFFLES

FLUE

Next: End

FAULT CODE 229 EA BAFFLES OR NOISY

HOUSING - BURNER

Next: End

FAULT CODE 229 EA DOES NOT ESTABLISH

FLUE

Next: End

FAULT CODE 229 EA DOES NOT ESTABLISH

VALVE - GAS-AIR (BEARING PLATE)

Next: End

FAULT CODE 229 EA DOES NOT ESTABLISH

BURNER WB7

Next: End

FAULT CODE 229 EA DOES NOT ESTABLISH

PIPE - SUCTION (AIR INTAKE)

Next: End

FAULT CODE 229 EA NOT ESTABLISHING NO CURRENT SHORTED

ELECTRODE

Next: End

FAULT CODE 229 EA RECTIFICATION GROUND

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 229 EAN RECTIFICATION LEAD

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 229 EA NOT ESTABLISHING NO CURRENT

ELECTRODE

Next: End

FAULT CODE 229 EADOES NOT IGNITE

SYPHON - LCS

Next: End

FAULT CODE 229 EA NO IGNITION

FLUE

Next: End

FAULT CODE 229 EA DOES NOT IGNITE

VALVE - GAS-AIR (BEARING PLATE)

Next: End

FAULT CODE 229 EA

BURNER WB7

Next: End

FAULT CODE 229 EA DOES NOT IGNITE

HEAT EXCHANGER (FLUEWAYS)

Next: End

FAULT CODE 229 EA

CONTROL BOX - SKIN MID AND GAS VALVE

Next: End

FAULT CODE 229 EA TO GAS VALVE SPARK NO IGNITION

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 229 EA NO IGNITION

PIPE - SUCTION (AIR INTAKE)

Next: End

FAULT CODE 229 EA IGNITION LEAD

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 229 EA SPARK BUT NO IGNITION

ELECTRODE

Next: End

FAULT CODE 229 EA IGNITES OK

FLUE

Next: End

FAULT CODE 229 EA IGNITES OK

VALVE - GAS-AIR (BEARING PLATE)

Next: End

FAULT CODE 229 EA IGNITES OK

INLET PRESSURE

Next: End

FAULT CODE 229 EA IGNITION OK

ELECTRODE

Next: End

FAULT CODE 229 EA IGNITES OK

PIPE - SUCTION (AIR INTAKE)

Next: End

FAULT CODE 229 EA IGNITES OK

SYPHON - LCS

Next: End

FAULT CODE 234 EA

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 238 F0 RESETS BUT FAULT REOCCURS

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 234 EA

Z REDIRECT

Next: End

OBSERVATION SPARKING HEARD

Z REDIRECT

Next: End

FAULT CODE 238 F0

WATER INGRESS

Next: End

FAULT CODE 238 F0 WILL NOT RESET

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 260 345 EF

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 260 345 EF NO POWER TO PUMP

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 271 NO POWER TO PUMP

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 271

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 373 8C NO POWER TO PUMP

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 373 8C

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION BURNER IGNITION BAFFLES PRESSURE LOW

BURNER WB7

Next: End

OBSERVATION BURNER IGNITION BAFFLES OR NOISY

HOUSING - BURNER

Next: End

OBSERVATION BURNER IGNITION BAFFLES PRESSURE OK

BURNER WB7

Next: End

INFORMATION USER DISPLAY

Z REDIRECT

Next: End

OPERATION CH REACHES TEMP RADS DO NOT HEAT

SYSTEM PRESSURE

Next: End

OPERATION CH BOILER REACHES TEMP RADS DO NOT HEAT

ISOLATION VALVES

Next: End

FAULT CODE 258 356 EH

Next: End

FAULT CODE 258 356 EH

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES

FUSE (FUSED SPUR)

Next: End

OBSERVATION DISPLAY ILLUMINATES

FUSE INTERNAL 5A

Next: End

OBSERVATION DISPLAY ILLUMINATES ALL OFF

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES FAULTY DISPLAY

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES PUMP RUNS AFTER SELF CHECK

FROST PROTECTION

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FROST PROTECTION PUMP ONLY

SENSOR 18MM (FLOW)

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FROST PROTECTION FROST THERMOSTAT

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK

FROST PROTECTION

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FROST PROTECTION

SENSOR 18MM (FLOW)

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK

SENSOR 18MM (FLOW)

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK SENSOR OVERHEAT

SENSOR - NTC MAX (OVERHEAT)

Next: End

OBSERVATION BOILER SELF CHECK NO DISPLAY

WATER INGRESS

Next: End

OBSERVATION DISPLAY ILLUMINATES - SELF CHECK

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK INCORRECT POWER FAN PULSING

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FAN PULSES

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK

CODE PLUG

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK CODE PLUG

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK NO POWER TO FAN

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FAN DOES NOT RUN

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK NO VOLTAGE TO PUMP

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION PUMP RUNS NO POWER TO EXT CONTROLS

CONTROL BOX - SKIN MID

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

SYSTEM PRESSURE

Next: End

OBSERVATION FAN RUNS NOT FIRING FOR DHW

SENSOR - NTC MAX (OVERHEAT)

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

PUMP - PWM GF 6M

Next: End

OBSERVATION FAN RUNS

LIMITER - TEMPERATURE (FLUE STAT)

Next: End

OPERATION CH UP TO TEMP RADS DO NOT HEAT

Next: End

OPERATION CH INSUFFICENT HEAT

FLUE

Next: End

OPERATION CH INSUFFICIENT HEAT

VALVE - GAS-AIR (BEARING PLATE)

Next: End

OPERATION CH INSUFFICIENT HEAT

BURNER WB7

Next: End

FAULT CODE 271

Next: End

FAULT CODE COMBI

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 373 8C

VALVE - BY-PASS

Next: End

FAULT CODE 373 8C

Next: End

FAULT CODE 271

VALVE - BY-PASS

Next: End

FAULT CODE 219 220 277 E9FAULT CODE 373 8C

Next: End

FAULT CODE 219 220 277 E9

VALVE - BY-PASS

Next: End

FAULT CODE 218 332 E5 222 E2 276 E9

VALVE - BY-PASS

Next: End

FAULT CODE 218 332 E5 222 E2 276 E9

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

VALVE - BY-PASS

Next: End

OBSERVATION BOILER SELF CHECK FROST PROTECTION

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FROST PROTECTION

Next: End

BLANK DISPLAY NO POWER TO EXT CONTROLS

CONTROL BOX - SKIN MID

Next: End

OBSERVATION FAN RUNS RETURN SENSORNO DISPLAY

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION FAN RUNSNO DISPLAY

SENSOR 18MM (FLOW)

Next: End

OBSERVATION FAN RUNS NOT FIRING FOR DHWNO DISPLAY

SENSOR - NTC MAX (OVERHEAT)

Next: End

OBSERVATION FAN RUNSNO DISPLAY

LIMITER - TEMPERATURE (FLUE STAT)

Next: End

COMBUSTION TEST

VALVE - GAS-AIR (BEARING PLATE)

Next: End

FAULT CODE 229 EA COMBUSTION FAILS

VALVE - GAS-AIR (BEARING PLATE)

Next: End

FAULT CODE 229 EA COMBUSTION FAILS

BURNER WB7

Next: End

FAULT CODE 229 EA COMBUSTION FAILS

HEAT EXCHANGER ASSEMBLY

Next: End

FAULT CODE 260 345 EF

SENSOR NTC - RIGHT ANGLED (RETURN SENSOR)

Next: End

LITE DIAGNOSTIC

Z REDIRECT

Next: End

QUICK ACCESS AND INFORMATION

Z REDIRECT

Next: End

QADAI

SENSOR 18MM (FLOW)

Next: End

QADAI

SENSOR NTC - RIGHT ANGLED (RETURN SENSOR)

Next: End

QADAI

SENSOR - NTC MAX (OVERHEAT)

Next: End

QADAI

TRANSFORMER - IGNITION

Next: End

SPARK GEN VOLTAGE QADAI

CONTROL BOX - SKIN MID

Next: End

QADAI PUMP RESISTANCE

PUMP - PWM GF 6M

Next: End

PUMP VOLTAGE QADAI

CONTROL BOX - SKIN MID

Next: End

QADAI

FAN

Next: End

FAN VOLTAGE QADAI

CONTROL BOX - SKIN MID

Next: End

RESISTANCE INCORRECT QADAI

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

GAS VALVE VOLTAGE QADAI

CONTROL BOX - SKIN MID

Next: End

IGNITES BUT DOES NOT ESTABLISH

MIXING UNIT ASSEMBLY

Next: End

FAULT CODE 229 EA 374 8C

MIXING UNIT ASSEMBLY

Next: End

SPARKING HEARD NO IGNITION FAULT CODE

MIXING UNIT ASSEMBLY

Next: End

IGNITES BUT DOES NOT ESTABLISH FAULT CODE

MIXING UNIT ASSEMBLY

Next: End

IGNITES BUT BAFFLES OR NOISY FAULT CODE

MIXING UNIT ASSEMBLY

Next: End

BOILER REMAINS LIT RADS ONLY WARM

MIXING UNIT ASSEMBLY

Next: End

IGNITES BUT BAFFLES OUT OR NOISY

MIXING UNIT ASSEMBLY

Next: End

SPARKING HEARD NO IGNITION

MIXING UNIT ASSEMBLY

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

BOILER SETUP PARAMETERS

Next: End

INFORMATION CASE REMOVAL

Z REDIRECT

Next: End

FAULT CODES

Z REDIRECT

Next: End

TYPE OF DIAGNOSTIC PROCEDURE

Z REDIRECT

Next: End

OBSERVATION FAN RUNS RETURN SENSOR

HARNESS - LOW VOLTAGE

Next: End

OPERATION CH BOILER REACHES TEMP RADS DO NOT HEAT

PUMP - PWM GF 6M

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

SENSOR 18MM (FLOW)

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

SENSOR - NTC MAX (OVERHEAT)

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

SENSOR NTC - RIGHT ANGLED (RETURN SENSOR)

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP FLUE TEMP

HEAT EXCHANGER (FLUEWAYS)

Next: End

OPERATION CH INSUFFICIENT HEAT OUTPUT SETTINGS

BOILER SETUP PARAMETERS

Next: End

OPERATION CH INSUFFICIENT HEAT

INLET PRESSURE

Next: End

OBSERVATION PUMP OVERRUN

BOILER SETUP PARAMETERS

Next: End

FAULT CODE 210 E9

LIMITER - TEMPERATURE (FLUE STAT)

Next: End

FAULT CODE 221 E9

SENSOR - NTC MAX (OVERHEAT)

Next: End

FAULT CODE 221 E9

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 233 9U

CODE PLUG

Next: End

OBSERVATION BOILER SELF CHECK NO VOLTAGE TO PUMP

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BOILER SELF CHECK

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 233 9U

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 231 FD

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 223 E2

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 240 241 286 D1 285 D9

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 240 241 286 D1 285 D9

SENSOR NTC - RIGHT ANGLED (RETURN SENSOR)

Next: End

FAULT CODE 264 C1

FAN

Next: End

FAULT CODE 239 242-256 258 259 262 263 267 272 328 F0 257 B7

Z REDIRECT

Next: End

FAULT CODE 228 F7

Z REDIRECT

Next: End

FAULT CODE H13

Z REDIRECT

Next: End

FAULT CODE 327

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 306 FA

CONTROL BOX - SKIN MID

Next: End

FAULT 228 F7

ELECTRODE

Next: End

FAULT CODE 323 A8

Next: End

FAULT CODE 278 F0

Z REDIRECT

Next: End

FAULT CODE 278 F0

SENSOR NTC - RIGHT ANGLED (RETURN SENSOR)

Next: End

FAULT CODE 278 F0 SAFETY SENSOR

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 278 F0 FLOW SENSOR

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 219 220 277 E9

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 218 332 E5 222 E2 267 E9

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 237 273 C4 274

Z REDIRECT

Next: End

FAULT CODE 212

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BURNER IGNITION IGNITES BUT CUTS OUT

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 800 CC

Z REDIRECT

Next: End

FAULT CODE 800 CC

Next: End

COMBUSTION TEST DROPS ON MINIMUM

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

COMBUSTION TEST

NOZZLE (INJECTOR)

Next: End

COMBUSTION TEST

HOSE - GAS

Next: End

OBSERVATION BURNER IGNITION NO IGNITION

FAN

Next: End

OBSERVATION BURNER IGNITION NO IGNITION

INLET PRESSURE

Next: End

OBSERVATION BURNER IGNITION NO IGNITION NO DROP

NOZZLE (INJECTOR)

Next: End

OBSERVATION BURNER IGNITION NO IGNITION NO DROP

HOSE - GAS

Next: End

OBSERVATION BURNER IGNITION NO POWER TO GAS VALVE

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BURNER IGNITION

CONTROL BOX - SKIN MID AND HARNESS ASSEMBLY HV

Next: End

OBSERVATION BURNER IGNITION NO PRESSURE DROP

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

OBSERVATION BURNER IGNITION SPARKING NO IGNITION

NOZZLE (INJECTOR)

Next: End

OBSERVATION BURNER IGNITION NO IGNITION PRESSURE DROP

HOSE - GAS

Next: End

OBSERVATION BURNER IGNITION NO IGNITION

TRANSFORMER - IGNITION

Next: End

OBSERVATION BURNER IGNITION PRESSURE DROP SEEN

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

OBSERVATION BURNER IGNITION TO GAS VALVE NO SPARKING

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION BURNER IGNITION NO SPARKING

TRANSFORMER - IGNITION

Next: End

OBSERVATION BURNER IGNITION NO SPARKING

ELECTRODE

Next: End

OBSERVATION BURNER IGNITION DOES NOT ESTABLISH

HEAT EXCHANGER (FLUEWAYS)

Next: End

OBSERVATION BURNER IGNITION NO VOLTAGE TO RECTIFICATION CIRCUIT

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BURNER IGNITION RECTIFICATION SHORTING

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION BURNER IGNITION NOT RECOGNISING RECIFICATION VOLTAGE

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BURNER IGNITION NOT ESTABLISHING LOW VOLTAGE

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BOILER SELF CHECK FROST PROTECTION PUMP RUNS

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BURNER IGNITION BAFFLES

FAN

Next: End

OBSERVATION BURNER IGNITION BURNER BAFFLES

NOZZLE (INJECTOR)

Next: End

OBSERVATION BURNER IGNITION BURNER BAFFLES

HOSE - GAS

Next: End

COMBUSTION TEST FAILS COMBUSTION

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FURTHER INVESTIGATION FUSE PCB PUMP

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FURTHER INVESTIGATION FUSE PCB GAS VALVE

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FURTHER INVESTIGATION FUSE PCB FAN

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FURTHER INVESTIGATION

FUSE INTERNAL 5A FURTHER INVESTIGATION

Next: End

FURTHER INVESTIGATION FUSE PCB SPARK GENERATOR

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FURTHER INVESTIGATION MAINS FUSE PUMP

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FURTHER INVESTIGATION MAINS FUSE GAS VALVE

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FURTHER INVESTIGATION MAINS FUSE FAN

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FURTHER INVESTIGATION

FUSE (FUSED SPUR) FURTHER INVESTIGATION

Next: End

FURTHER INVESTIGATION MAINS FUSE SPARK GENERATOR

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 229 EA BAFFLES

FAN

Next: End

FAULT CODE 229 EA BURNER BAFFLES

NOZZLE (INJECTOR)

Next: End

FAULT CODE 229 EA IGNITION BURNER BAFFLES

HOSE - GAS

Next: End

FAULT CODE 229 EA BAFFLES

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 229 EA DOES NOT ESTABLISH

HEAT EXCHANGER (FLUEWAYS)

Next: End

FAULT CODE 229 EA NO VOLTAGE TO RECTIFICATION CIRCUIT

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 229 EA RECTIFICATION SHORTING

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 229 EA NOT RECOGNISING RECIFICATION VOLTAGE

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 229 EA NOT ESTABLISHING LOW VOLTAGE

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 229 EA NO IGNITION

FAN

Next: End

FAULT CODE 229 EA NO IGNITION

INLET PRESSURE

Next: End

FAULT CODE 229 EA NO IGNITION NO DROP

NOZZLE (INJECTOR)

Next: End

FAULT CODE 229 EA NO IGNITION NO DROP

HOSE - GAS

Next: End

FAULT CODE 229 EA NO POWER TO GAS VALVE

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 229 EA

CONTROL BOX - SKIN MID AND HARNESS ASSEMBLY HV

Next: End

FAULT CODE 229 EA NO PRESSURE DROP

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 229 EA SPARKING NO IGNITION

NOZZLE (INJECTOR)

Next: End

FAULT CODE 229 EA NO IGNITION PRESSURE DROP

HOSE - GAS

Next: End

FAULT CODE 229 EA NO IGNITION

TRANSFORMER - IGNITION

Next: End

FAULT CODE 229 EA PRESSURE DROP SEEN

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 299 EA IGNITES OK

HEAT EXCHANGER (FLUEWAYS)

Next: End

FAULT CODE 229 EA

NO FAULT FOUND

Next: End

FAULT CODE 229 EA IGNITES OK DROPS ON MINIMUM

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 229 EA IGNITES OK

NOZZLE (INJECTOR)

Next: End

FAULT CODE 229 EA IGNITES OK

HOSE - GAS

Next: End

FAULT CODE 234 EA

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 238 F0 RESETS BUT FAULT REOCCURS

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 234 EA

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 238 F0

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 238 F0 WILL NOT RESET

HARNESS ASSEMBLY - HV & IGNITION

Next: End

FAULT CODE 260 245 EF STUCK

PUMP - PWM GF 6M

Next: End

FAULT CODE 271 STUCK

PUMP - PWM GF 6M

Next: End

FAULT CODE 373 8C EF STUCK

PUMP - PWM GF 6M

Next: End

OBSERVATION BURNER IGNITION BAFFLES

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

OPERATION CH

EXPANSION VESSEL

Next: End

FAULT CODE 258 356 EH

Z REDIRECT

Next: End

OBSERVATION DISPLAY ILLUMINATES

Next: End

OBSERVATION DISPLAY ILLUMINATES MAINS FUSE

Z REDIRECT

Next: End

OBSERVATION DISPLAY ILLUMINATES INTERNAL FUSE

Z REDIRECT

Next: End

OBSERVATION DISPLAY ILLUMINATES BLANK DISPLAY

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FROST PROTECTION PUMP RUNS

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FLOW SENSOR

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK SAFETY SENSOR

HARNESS - LOW VOLTAGE

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK STUCK IN FAULT

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES SELF CHECK FAN RUNS CONSTANT SPEED

HARNESS ASSEMBLY - HV & IGNITION

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FAN PULSES

FAN

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FAN DOES NOT RUN

FAN

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK

PUMP - PWM GF 6M

Next: End

OBSERVATION PUMP RUNS

Next: End

OBSERVATION FAN RUNS NO RESPONSE TO CH

CONTROL BOX - SKIN MID

Next: End

OBSERVATION FAN RUNS FLUE SENSOR

HARNESS - LOW VOLTAGE

Next: End

OPERATION CH UP TO TEMP RADS DO NOT HEAT

Next: End

OPERATION CH INSUFFICIENT HEAT

HEAT EXCHANGER (FLUEWAYS)

Next: End

OPERATION CH INSUFFICIENT HEAT

CONTROL BOX - SKIN MID

Next: End

OPERATION CH INSUFFICIENT HEAT

NOZZLE (INJECTOR)

Next: End

OPERATION CH INSUFFICIENT HEAT

HOSE - GAS

Next: End

OPERATION DHW UNSATISFACTORY

Next: End

FAULT CODE COMBI

Z REDIRECT

Next: End

FAULT CODE 278 F0

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 373 8C

Next: End

FAULT CODE 373 8C

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 373 8C

HEAT EXCHANGER ASSEMBLY

Next: End

FAULT CODE 271

Next: End

FAULT CODE 271

HEAT EXCHANGER ASSEMBLY

Next: End

FAULT CODE 271

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 219 220 277 E9

Next: End

FAULT CODE 219 220 277 E9

HEAT EXCHANGER ASSEMBLY

Next: End

FAULT CODE 219 220 277 E9

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 218 332 E5 222 E2 276 E9

Next: End

FAULT CODE 218 332 E5 222 E2 276 E9

HEAT EXCHANGER ASSEMBLY

Next: End

FAULT CODE 218 332 E5 222 E2 276 E9

CONTROL BOX - SKIN MID

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

HEAT EXCHANGER ASSEMBLY

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

CONTROL BOX - SKIN MID

Next: End

OBSERVATION PUMP RUNS NOT RESPONDING TO DEMAND

CONTROL BOX - SKIN MID

Next: End

OBSERVATION BOILER SELF CHECK FROST PROTECTION

CONTROL BOX - SKIN MID

Next: End

OBSERVATION DISPLAY ILLUMINATES BOILER SELF CHECK FROST PROTECTION

CONTROL BOX - SKIN MID

Next: End

BLANK DISPLAY NOT RESPONDING TO DEMAND

CONTROL BOX - SKIN MID

Next: End

BLANK DISPLAY

Next: End

NO DISPLAY

CONTROL BOX - SKIN MID (NO DISPLAY)

Next: End

OBSERVATION FAN RUNSNO DISPLAY

SENSOR NTC - RIGHT ANGLED (RETURN SENSOR)

Next: End

OBSERVATION FAN RUNS NO RESPONSE TO DHW NO DISPLAY

CONTROL BOX - SKIN MID

Next: End

OBSERVATION FAN RUNS FLUE SENSORNO DISPLAY

HARNESS - LOW VOLTAGE

Next: End

COMBUSTION TEST FAILED AIR INTEGRITY OK

SEAL - CONDENSATE COLLECTOR

Next: End

COMBUSTION TEST FAILED AIR INTEGRITY OK

SEAL - FLUE

Next: End

COMBUSTION TEST FAILED AIR INTEGRITY OK

SEAL

Next: End

COMBUSTION TEST MAXIMUM AND MINIMUM

FLUE

Next: End

COMBUSTION TEST FAILED AIR INTEGRITY FAILED

SEAL - CONDENSATE COLLECTOR

Next: End

COMBUSTION TEST FAILED AIR INTEGRITY FAILED

SEAL - FLUE

Next: End

COMBUSTION TEST FAILED AIR INTEGRITY FAILED

SEAL

Next: End

FAULT CODE 229 EA COMBUSTION TEST FAILED

FLUE

Next: End

FAULT CODE 229 EA COMBUSTION TEST FAILED AIR INTEGRITY FAILED

SEAL - CONDENSATE COLLECTOR

Next: End

FAULT CODE 229 EA COMBUSTION TEST FAILED AIR INTEGRITY FAILED

SEAL - FLUE

Next: End

FAULT CODE 229 EA COMBUSTION TEST FAILED AIR INTEGRITY FAILED

SEAL

Next: End

FAULT CODE 229 EA COMBUSTION TEST FAILED AIR INTEGRITY OK

SEAL - CONDENSATE COLLECTOR

Next: End

FAULT CODE 229 EA COMBUSTION TEST FAILED AIR INTEGRITY OK

SEAL - FLUE

Next: End

FAULT CODE 229 EA COMBUSTION TEST FAILED AIR INTEGRITY OK

SEAL

Next: End

FAULT CODE 218 332 E5 222 E2 276 E9 EXCESSIVE DIFF

VALVE - BY-PASS (INSPECTION)

Next: End

FAULT CODE 218 332 E5 222 E2 E67 E9

PIPE - RESTRICTOR - BYPASS

Next: End

FAULT CODE 219 220 277 E9

VALVE - BY-PASS (INSPECTION)

Next: End

FAULT CODE 219 220 277 E9

PIPE - RESTRICTOR - BYPASS

Next: End

FAULT CODE 271 EXCESSIVE DIFF

VALVE - BY-PASS (INSPECTION)

Next: End

FAULT CODE 271 EXCESSIVE DIFF

PIPE - RESTRICTOR - BYPASS

Next: End

FAULT CODE 373 8C EXCESSIVE DIFF

VALVE - BY-PASS (INSPECTION)

Next: End

FAULT CODE 373 8C EXCESSIVE DIFF

PIPE - RESTRICTOR - BYPASS

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP EXCESSIVE DIFF

VALVE - BY-PASS (INSPECTION)

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP EXCESSIVE DIFF

PIPE - RESTRICTOR - BYPASS

Next: End

FAULT CODE 229 EA COMBUSTION FAILS

GAS VALVE (C/W BRACKET ASSEMBLY)

Next: End

FAULT CODE 260 STUCK IN FAULT CODE

CONTROL BOX - SKIN MID

Next: End

OPERATION DHW

Next: End

SENSOR FLOW

RESULT AS EXPECTED

Next: End

SENSOR RETURN

RESULT AS EXPECTED

Next: End

SENSOR SAFETY

RESULT AS EXPECTED

Next: End

SPARK GEN RESISTANCE

RESULT AS EXPECTED

Next: End

SPARK GEN VOLTAGE

RESULT AS EXPECTED

Next: End

PUMP RESISTANCE

RESULT AS EXPECTED

Next: End

PUMP VOLTAGE

RESULT AS EXPECTED

Next: End

FAN RESISTANCE

RESULT AS EXPECTED

Next: End

FAN VOLTAGE

RESULT AS EXPECTED

Next: End

GAS VALVE RESISTANCE

RESULT AS EXPECTED

Next: End

GAS VALVE VOLTAGE

RESULT AS EXPECTED

Next: End

OBSERVATION FAN RUNS

SENSOR NTC - RIGHT ANGLED (RETURN SENSOR)

Next: End

OPERATION CH SHUTS DOWN BEFORE TEMP

LIMITER - TEMPERATURE (FLUE STAT)

Next: End

OBSERVATION PUMP OVERRUN CH

CONTROL BOX - SKIN MID

Next: End

OBSERVATION PUMP OVERRUN DOES NOT OVERRUN

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 210 E9

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 210 E9

HARNESS - LOW VOLTAGE

Next: End

FAULT CODE 210 E9

OVERHEAT - FLUE

Next: End

FAULT CODE 210 E9

HEAT EXCHANGER (FLUEWAYS)

Next: End

FAULT 210 E9

LIMITER - TEMPERATURE (FLUE STAT)

Next: End

FAULT CODE 221 E9

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 231 FD

Z REDIRECT

Next: End

OBSERVATION BOILER SELF CHECK

PUMP - PWM GF 6M

Next: End

FAULT CODE 233 9U

CONTROL BOX - SKIN MID

Next: End

FAULT CODE 223 E2

CONTROL BOX - SKIN MID

Next: End

FAULT CODE D4 (STATUS 271) DISPLAYED SHORTLY AFTER IGNITION

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION

Next: p1482

COMBUSTION TEST FAILED

CHARACTERISTIC TEST FROM COMBUSTION TEST MAX AND MINIMUM

Next: p2370

BOILER DROPS OUT ON MINIMUM RATE

CHARACTERISTIC TEST FROM COMBUSTION TEST MAX AND MINIMUM

Next: p1849

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p1858

GAS SUPPLY TUBE BLOCKED RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p1860

SPARKING HEARD BUT NO IGNITION

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION

Next: p2063

NO PRESSURE DROP OBSERVED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: p2079

PRESSURE DROPS BELOW 16 5MB (28MB FOR LPG)

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2081

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2084

GAS SUPPLY TUBE BLOCKED, RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2086

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2100

GAS SUPPLY TUBE BLOCKED, RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2102

NO SPARKING HEARD

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION

Next: p2120

APPROX 90V AC MEASURED

CHARACTERISTIC TEST FROM VOLTAGE RECTIFICATION CIRCUIT

Next: p2186

VOLTAGE LESS THAN 30V AC MEASURED

CHARACTERISTIC TEST FROM VOLTAGE RECTIFICATION CIRCUIT

Next: p2188

BURNER IGNITES SMOOTHLY BUT DOES NOT ESTABLISH (SPARKING CONTINUES)

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION

Next: p2172

BOILER ATTEMPTS TO FIRE AFTER SELF CHECK

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p2294

PUMP RUNS CONTINUOUSLY AFTER SELF CHECK

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p2308

BURNER IGNITES BUT BAFFLES OUT OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION

Next: p2316

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2332

GAS SUPPLY TUBE BLOCKED, RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2334

SPARKING HEARD BUT NO IGNITION OR IGNITION INTERMITTENT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION FAULT CODE 229

Next: p2533

BURNER IGNITES SMOOTHLY BUT DOES NOT ESTABLISH OR ESTABLISHES INTERMITTENTLY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION FAULT CODE 229

Next: p2535

BURNER IGNITES BUT BAFFLES OUT OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION

Next: p2537

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2553

GAS SUPPLY TUBE BLOCKED, RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2555

APPROX 90V AC MEASURED

CHARACTERISTIC TEST FROM VOLTAGE RECTIFICATION CIRCUIT

Next: p2573

VOLTAGE LESS THAN 30V AC MEASURED

CHARACTERISTIC TEST FROM VOLTAGE RECTIFICATION CIRCUIT

Next: p2575

NO PRESSURE DROP OBSERVED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: p2601

PRESSURE DROPS BELOW 16 5MB (28MB FOR LPG)

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2603

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2606

GAS SUPPLY TUBE BLOCKED, RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2608

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2622

GAS SUPPLY TUBE BLOCKED, RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p2624

COMBUSTION TEST FAILED

CHARACTERISTIC TEST FROM COMBUSTION TEST MAX AND MINIMUM

Next: p2782

BOILER DROPS OUT ON MINIMUM RATE

CHARACTERISTIC TEST FROM COMBUSTION TEST MAX AND MINIMUM

Next: p2644

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2654

GAS SUPPLY TUBE BLOCKED RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p2656

BOILER DOES NOT RESPOND TO DHW DEMAND

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p3540

DHW OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p3321

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: !p305

BOILER REACHES TEMPERATURE, RADIATORS DO NOT HEAT OR ONLY GET WARM

CHARACTERISTIC TEST FROM OPERATION CH

Next: p309

PUMP DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p3195

FAN DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK NO DISPLAY

Next: p3197

FAN PULSES 3 TIMES AT INCREASING SPEEDS THEN RUNS FOR 2 MINUTES

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK NO DISPLAY

Next: p3199

FAN RUNS AT A CONSTANT SPEED FOR 2 MINUTES

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK NO DISPLAY

Next: p3201

BOILER ATTEMPTS TO FIRE AFTER SELF CHECK

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p3203

PUMP RUNS CONTINUOUSLY AFTER SELF CHECK

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p3205

BOILER SHUTS DOWN BEFORE REACHING TEMPERATURE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p327

INJECTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION GAS SUPPLY TUBE

Next: !p3318

GAS SUPPLY TUBE BLOCKED, RESTRICTED OR DAMAGED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p3320

LOWER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3465

UPPER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3467

INNER FLUE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3469

LOWER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3473

UPPER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3475

INNER FLUE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3477

LOWER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3481

UPPER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3483

INNER FLUE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3485

LOWER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3494

UPPER CONDENSATE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3496

INNER FLUE SEAL DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FLUE SEALS

Next: !p3498

INTERNAL BYPASS BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3500

RESTRICTOR BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3502

INTERNAL BYPASS BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3504

RESTRICTOR BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3506

INTERNAL BYPASS BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3509

RESTRICTOR BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3511

INTERNAL BYPASS BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3514

RESTRICTOR BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3516

INTERNAL BYPASS BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3519

RESTRICTOR BLOCKED OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION INTERNAL BYPASS

Next: !p3521

PUMP DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p951

BOILER REMAINS LIT BUT BOILER AND RADIATORS ONLY GET WARM

CHARACTERISTIC TEST FROM OPERATION CH

Next: p720

PUMP OVERRUNS FOR MORE THAN 3 MINUTES

CHARACTERISTIC TEST FROM OBSERVATION PUMP OVERRUN

Next: p777

PUMP OVERRUNS FOR LESS THAN 3 MINUTES OR DOES NOT OVERRUN

CHARACTERISTIC TEST FROM OBSERVATION PUMP OVERRUN

Next: !p781

FLUE TEMPERATURE REACHES APPROX 95°C OR HIGHER

CHARACTERISTIC TEST FROM TEMPERATURE EXHAUST GAS (FAULT CODE)

Next: !p895

RETURNS TO FAULT CODE, FLUE TEMPERATURE BELOW 95°C

CHARACTERISTIC TEST FROM TEMPERATURE EXHAUST GAS (FAULT CODE)

Next: !p897

09/05/2023 15:09:29 2304_1_50_1 21/06/2023 12:27:49

10/05/2023 08:41:24

Next: End

RESISTANCE SENSOR RETURN AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: !p1003, f1004

RESISTANCE HARNESS RETURN SENSOR

DISCONNECT PLUG FROM

Next: !p1005, !f1006

RESISTANCE HARNESS FAN

DISCONNECT FAN CONNECTOR FROM FAN

Next: !p1010, !f1009

OBSERVATION BOILER RESET INTERNAL ERROR

Next: !p1016, !f1017

OBSERVATION BOILER RESET FAULT 228 F7

Next: !p1020, f1056

INFORMATION SERVICE REMINDER

H13 IS THE CODE TO I

Next: !p1035, !f1036

INSPECTION RESET SWITCH

Next: !p1043, !f1055

INSPECTION FLUE

Next: p1047, !f1048

INSPECTION RECTIFICATION LEADS

{GAINPCBACS}
REMOVE BOILER CASING
DISCONNECT THE AIR INTAKE

Next: p1061, !f1058

OBSERVATION IS WEATHER COMPENSATION FITTED

Next: p1163, !f1162

OBSERVATION BOILER RESET FAULT 278 F0

ENSURE APPLIANCE IS COOL

Next: !p1269, f1270

RESISTANCE SENSOR FLOW AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p1271, f1274

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: !p1282, !f1283

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: !p1280, !f1281

RESISTANCE HARNESS RETURN SENSOR

DISCONNECT PLUG FROM

Next: !p1278, !f1279

RESISTANCE SENSOR SAFETY AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p1368, f1369

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: !p1370, !f1371

RESISTANCE SENSOR FLOW AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p1392, f1393

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: !p1394, !f1414

INSPECTION PRESSURE SYSTEM

Next: p2715, !f1418

OBSERVATION BOILER RESET FAULT 237 273 C4 274

Next: !p1425, !f1426

INSPECTION PRESSURE SYSTEM

Next: p1435, !f1442

INSPECTION PRESSURE SYSTEM

Next: p2726, !f1448

INFORMATION APPLIANCE OVERHEAT

DUE TO THE DESIGN OF

Next: p1463, !f1464

OBSERVATION BOILER RESET FAULT 800 CC

Next: !p1717, f1710

OBSERVATION IS OUTDOOR TEMPERATURE SENSOR FITTED

GAIN ACCESS TO LOWER PCB PANEL

Next: p1711, !f1718

INSPECTION CONDENSATE PIPE

Next: p2066, !f2067

RESISTANCE GAS VALVE AND HARNESS

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: !p2089, f2090

RESISTANCE GAS VALVE

DISCONNECT PLUG FROM GAS VALVE

Next: !p2091, !f2092

RESISTANCE IGNITION LEAD

DISCONNECT THE IGNIT

Next: !p2105, !f2106

RESISTANCE GAS VALVE

DISCONNECT PLUG FROM GAS VALVE

Next: !p2123, !f2124

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}

Next: p2165, !f2166

INSPECTION FLUE

Next: p3589, !f2176

RESISTANCE RECTIFICATION ELECTRODE TO EARTH

DISCONNECT LEAD FROM RECTIFICATION ELECTRODE

Next: !p2191, !f2192

INSPECTION FLUE

Next: p3631, !f2322

RESISTANCE MAINS IN FURTHER INVESTIGATION

GAIN ACCESS TO THE LOWER PANEL OF THE PCB

Next: p2389, !f2406

RESISTANCE PUMP FURTHER INVESTIGATION

DISCONNECT CONNECTOR FROM PUMP

Next: !p2392, !f2393

RESISTANCE GAS VALVE FURTHER INVESTIGATION

DISCONNECT PLUG FROM GAS VALVE

Next: !p2396, !f2397

RESISTANCE FAN FURTHER INVESTIGATION

DISCONNECT CONNECTOR FROM FAN

Next: !p2400, !f2401

RESISTANCE SPARK GENERATOR FURTHER INVESTIGATION

REMOVE AIR INTAKE
DISCONNECT CONNECTOR FROM SPARK GENERATOR

Next: !p2404, !f2405

RESISTANCE MAINS IN FURTHER INVESTIGATION

GAIN ACCESS TO THE LOWER PANEL OF THE PCB

Next: p2408, !f2425

RESISTANCE PUMP FURTHER INVESTIGATION

DISCONNECT CONNECTOR FROM PUMP

Next: !p2411, !f2412

RESISTANCE GAS VALVE FURTHER INVESTIGATION

DISCONNECT PLUG FROM GAS VALVE

Next: !p2415, !f2416

RESISTANCE FAN FURTHER INVESTIGATION

DISCONNECT CONNECTOR FROM FAN

Next: !p2419, !f2420

RESISTANCE SPARK GENERATOR FURTHER INVESTIGATION

REMOVE AIR INTAKE
DISCONNECT CONNECTOR FROM SPARK GENERATOR

Next: !p2423, !f2424

OBSERVATION BURNER IGNITION FAULT CODE 229

CH TEMPERATURE CONTROL SET TO MAX

Next: p2531, ?2532, ?2534, ?2536

INSPECTION FLUE

Next: p3617, !f2543

INSPECTION FLUE

Next: p3610, !f2563

RESISTANCE RECTIFICATION ELECTRODE TO EARTH

DISCONNECT LEAD FROM RECTIFICATION ELECTRODE

Next: !p2578, !f2579

INSPECTION CONDENSATE PIPE

Next: p2588, !f2589

RESISTANCE GAS VALVE AND HARNESS

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: !p2611, f2612

RESISTANCE GAS VALVE

DISCONNECT PLUG FROM GAS VALVE

Next: !p2613, !f2614

RESISTANCE IGNITION LEAD

DISCONNECT THE IGNIT

Next: !p2627, !f2628

INSPECTION FLUE

Next: p3596, !f2634

OBSERVATION BOILER RESET FAULT 234

CH TEMPERATURE CONTROL TO MAX

Next: p2667, !f2687

RESISTANCE GAS VALVE

DISCONNECT PLUG FROM GAS VALVE

Next: !p2670, !f2671

OBSERVATION BOILER RESET FAULT 238 F0

Next: p2708, f2684

INSPECTION HARNESS GAS VALVE

Next: !p2685, !f2686

RESISTANCE GAS VALVE TO EARTH

DISCONNECT PLUG FROM GAS VALVE

Next: !p2713, !f2714

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2722, !f2725

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2744, !f2745

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2765, !f2766

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3339, f3344

VOLTAGE MAINS POWER IN FAULT CODE

GAIN ACCESS TO THE LOWER PANEL OF THE PCB

Next: p3153, !f3145

OBSERVATION DOES APPLIANCE RUN SELF CHECK

REMOVE THE OUTER CASING

Next: p3176, f3177

VOLTAGE MAINS POWER IN

GAIN ACCESS TO THE LOWER PANEL OF THE PCB

Next: p3178, f3179

RESISTANCE FUSE (MAINS FUSE)

REMOVE THE FUSE FROM THE FUSED SPUR

Next: !p3180, f3181

FURTHER INVESTIGATION MAINS FUSE

Next: !p3182, !f3183

FURTHER INVESTIGATION FUSE PCB

Next: !p3186, !f3187

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: !p3224, !f3225

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: !p3228, !f3229

RESISTANCE GAS VALVE TO EARTH

DISCONNECT PLUG FROM GAS VALVE

Next: !p3234, !f3235

VOLTAGE CH DEMAND INTO BOILER

GAIN ACCESS TO LOWER PCB PANEL

Next: !p3425, f3287

VOLTAGE CH DEMAND OUT OF BOILER

Next: !p3288, !f3289

RESISTANCE SENSOR FLUE

DISCONNECT WIRES FROM FLUE SENSOR

Next: !p3299, !f3300

INSPECTION FLUE

Next: p3624, !f3310

INSPECTION INTERNAL BYPASS

ISOLATE AND DRAIN BOILER PRIMARY CIRCUIT

Next: !p3345, ?3513, ?3515

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3361, f3362

INSPECTION INTERNAL BYPASS

ISOLATE AND DRAIN BOILER PRIMARY CIRCUIT

Next: !p3363, ?3508, ?3510

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3383, f3384

INSPECTION INTERNAL BYPASS

ISOLATE AND DRAIN BOILER PRIMARY CIRCUIT

Next: !p3385, ?3503, ?3505

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3404, f3405

INSPECTION INTERNAL BYPASS

ISOLATE AND DRAIN BOILER PRIMARY CIRCUIT

Next: !p3406, ?3499, ?3501

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3416, f3417

INSPECTION INTERNAL BYPASS

ISOLATE AND DRAIN BOILER PRIMARY CIRCUIT

Next: !p3418, ?3518, ?3520

VOLTAGE CH DEMAND INTO BOILER

GAIN ACCESS TO LOWER PCB PANEL

Next: !p3435, f3436

VOLTAGE CH DEMAND OUT OF BOILER

Next: !p3437, !f3438

RESISTANCE SENSOR RETURN AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p3441, f3442

RESISTANCE HARNESS RETURN SENSOR

DISCONNECT PLUG FROM

Next: !p3443, !f3444

RESISTANCE SENSOR FLUE

DISCONNECT WIRES FROM FLUE SENSOR

Next: !p3451, !f3452

INSPECTION FLUE SEALS

Next: !p3471, ?3472, ?3474, ?3476

INSPECTION FLUE SEALS

Next: !p3479, ?3480, ?3482, ?3484

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: !p3547, !f3548

RESISTANCE SENSOR RETURN AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: !p3551, !f3552

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: !p3555, !f3556

RESISTANCE SPARK GENERATOR (QADAI)

REMOVE AIR INTAKE
DISCONNECT CONNECTOR FROM SPARK GENERATOR

Next: !p3559, !f3560

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}

Next: !p3563, !f3564

RESISTANCE PUMP (QADAI)

DISCONNECT CONNECTOR FROM PUMP

Next: !p3567, !f3568

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p3571, !f3572

RESISTANCE FAN (QADAI)

DISCONNECT CONNECTOR FROM FAN

Next: !p3575, !f3576

VOLTAGE FAN SELF CHECK

{GAINPCBACS}

Next: !p3579, !f3580

RESISTANCE GAS VALVE

DISCONNECT PLUG FROM GAS VALVE

Next: !p3583, !f3584

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}
CH TEMPERATURE CONTROL SET TO MAX

Next: !p3587, !f3588

RESISTANCE SENSOR RETURN AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p2042, f603

RESISTANCE HARNESS RETURN SENSOR

DISCONNECT PLUG FROM

Next: !p606, !f607

TEMPERATURE EXHAUST GAS

CH TEMPERATURE CONTR

Next: !p716, !f718

RESISTANCE SENSOR FLUE AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X7 FROM THE PCB

Next: !p888, f889

RESISTANCE SENSOR FLUE

DISCONNECT WIRES FROM FLUE SENSOR

Next: !p890, !f891

OBSERVATION BOILER RESET FAULT 231

Next: !p939, !f985

INSPECTION CODE PLUG

{GAINPCBACS}

Next: p943, !f944

RESISTANCE SENSOR FLOW AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: !p994, f997

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: !p1000, !f1001

INSPECTION CONDENSATE PIPE

Next: p1049, !f1050

PRESSURE TIGHTNESS TEST

Next: p1052, !f1051

PRESSURE STANDING RETURN

ATTACH U-GAUGE TO INLET PRESSURE TEST POINT

Next: !p1054, !f1053

OBSERVATION DISCONNECT RECTIFICATION LEADS

DISCONNECT THE RECTI

Next: p1063, !f1066

INSPECTION CONDENSATE PIPE

Next: !p1064, !f1065

DISCONNECT FW100 CONTROLS

DISCONNECT FW100 OR

Next: !p1164, !f1165

RESISTANCE SENSOR SAFETY AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p1272, f1275

RESISTANCE SENSOR RETURN AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: !p3326, f1276

OBSERVATION BOILER RESET

ENSURE APPLIANCE IS COOL

Next: p1372, !f1373

INFORMATION APPLIANCE OVERHEAT

DUE TO THE DESIGN OF

Next: p1374, !f1375

INSPECTION PRESSURE SYSTEM

Next: p1376, !f1377

PUMP LIMPET TEST

Next: p1378, !f1379

RESISTANCE SENSOR FLOW AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p3378, !f1381

OBSERVATION BOILER RESET

ENSURE APPLIANCE IS COOL

Next: p1396, !f1397

INFORMATION APPLIANCE OVERHEAT

DUE TO THE DESIGN OF

Next: p1398, !f1399

INSPECTION PRESSURE SYSTEM

Next: p1400, !f1401

PUMP LIMPET TEST

Next: p1402, !f1403

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p3389, !f1415

PUMP LIMPET TEST

Next: p1419, !f1420

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p3537, !f1422

PUMP LIMPET TEST

Next: p1436, !f1441

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p1437, !f1438

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: !p1439, !f1440

PUMP LIMPET TEST

Next: p1445, !f1449

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p1446, !f1450

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p3327, !f1451

INSPECTION PRESSURE SYSTEM

Next: p2748, !f1466

PUMP LIMPET TEST

Next: p1467, !f1468

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p1469, !f1470

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p3347, !f1472

TEMPERATURE DIFFERENTIAL FLOW AND RETURN

CH TEMPERATURE CONTROL TO MAX

Next: p3340, f2862

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p1483, !f1486

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: !p1484, !f1485

DISCONNECT OUTDOOR SENSOR

DISCONNECT THE PLUG FOR THE OUTDOOR TEMPERATURE SENSOR (BLUE CONNECTOR) AND MAKE SAFE

Next: !p1719, !f1720

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p1852, !f1853

INSPECTION RECTIFICATION ELECTRODE

SLIDE THE SPARK GENE

Next: !p1850, !f1851

INSPECTION CONDENSATE PIPE

Next: p3453, !f1855

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p3522, ?1857, ?1859

RESISTANCE SENSOR FLOW AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p3294, !f2060

PRESSURE FAN LOCKOUT

1. ATTACH TEL

Next: p2064, f2065

PRESSURE GAS INLET AND DROP

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT
CH TEMPERATURE CONTROL SET TO MAX

Next: p2076, ?2078, ?2080

INSPECTION FLUE

Next: p3640, !f2069

INSPECTION FAN BEARING PLATE

Next: p2070, !f2071

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: p2072, !f2073

INSPECTION HEAT EXCHANGER FLUE WAYS

Next: !p2074, !f2075

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p2095, !f2096

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p2082, ?2083, ?2085

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}
CH TEMPERATURE CONTROL SET TO MAX

Next: p2087, f2088

RESISTANCE HARNESS GAS VALVE

DISCONNECT THE PLUG FROM THE GAS VALVE

Next: !p2093, !f2094

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p2097, ?2099, ?2101

OBSERVATION SPARK GENERATOR OUTPUT

REMOVE THE AIR INTAK

Next: p2103, f2104

INSPECTION ELECTRODE ASSEMBLY

SLIDE THE SPARK GENE

Next: !p2107, !f2108

RESISTANCE GAS VALVE AND HARNESS

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: p2157, f2122

OBSERVATION DISCONNECT SPARK ELECTRODE LEAD

CH TEMPERATURE CONTR

Next: p2169, f2164

RESISTANCE HARNESS PCB TO SPARK GENERATOR

REMOVE AIR INTAKE
DISCONNECT PLUG FROM THE SPARK GENERATOR

Next: !p2167, !f2168

RESISTANCE IGNITION LEAD (OPEN CIRCUIT CHECK)

DISCONNECT THE IGNIT

Next: !p2170, !f2199

PRESSURE FAN LOCKOUT

1. ATTACH TEL

Next: p2173, f2174

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p2181, !f2182

INSPECTION FAN BEARING PLATE

Next: p2177, !f2178

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: !p2179, !f2180

VOLTAGE RECTIFICATION CIRCUIT

{GAINPCBACS}
ATTACH A CROCODILE CLIP TO THE RECTIFICATION LEAD

Next: p2183, ?2185, ?2187

RESISTANCE RECTIFICATION LEAD

{GAINPCBACS}
DISC

Next: p2195, !f2196

RESISTANCE HARNESS RECTIFICATION GROUND

DISCONNECT X5 FROM THE PCB
DISCONNECT THE FLAME SENSE LEAD FROM THE SAFETY SENSOR

Next: !p2193, !f2194

RESISTANCE RECTIFICATION CIRCUIT TO EARTH

{GAINPCBACS}
DISCONNECT CONNECTOR X5 FROM THE PCB

Next: !p2189, f2190

INSPECTION RECTIFICATION ELECTRODE

SLIDE THE SPARK GENE

Next: !p2197, !f2198

TEMPERATURE FLOW (BOILER FIRING)

REMOVE AIR INTAKE FROM APPLIANCE

Next: p2295, !f2296

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p3426, !f2298

TEMPERATURE FLOW (PUMP RUNNING)

REMOVE AIR INTAKE FROM APPLIANCE

Next: p2309, !f2310

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p2311, !f2312

RESISTANCE FROST PROTECTION

GAIN ACCESS TO LOWER PCB PANEL

Next: !p2313, !f2314

INSPECTION CONDENSATE PIPE

Next: p2317, !f2318

PRESSURE FAN LOCKOUT

1. ATTACH TEL

Next: p2319, f2320

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p2327, !f2328

INSPECTION FAN BEARING PLATE

Next: p2770, !f2324

INSPECTION HEAT EXCHANGER FLUE WAYS

Next: !p2325, !f2326

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p2777, ?2331, ?2333

INSPECTION CH TEMP SETTING

CH TEMPERATURE CONTROL KNOB SET TO MAX

Next: p731, !f2364

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: p2367, !f2366

INSPECTION HEAT EXCHANGER FLUE WAYS

Next: !p2368, !f2369

INSPECTION AIR INLET INTEGRITY

REFIT COMBUSTION CHA

Next: p1847, f3470

RESISTANCE PUMP AND HARNESS FURTHER INVESTIGATION

{GAINPCBACS}
DISCONNECT CONNECTOR X11 FROM THE PCB

Next: p2390, f2391

RESISTANCE GAS VALVE AND HARNESS FURTHER INVESTIGATION

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: p2394, f2395

RESISTANCE FAN AND HARNESS FURTHER INVESTIGATION

Next: p2398, f2399

RESISTANCE SPARK GENERATOR AND HARNESS FURTHER INVESTIGATION

DISCONNECT CONNECTOR X3 AND FROM THE PCB

Next: !p2402, f2403

RESISTANCE PUMP AND HARNESS FURTHER INVESTIGATION

{GAINPCBACS}
DISCONNECT CONNECTOR X11 FROM THE PCB

Next: p2409, f2410

RESISTANCE GAS VALVE AND HARNESS FURTHER INVESTIGATION

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: p2413, f2414

RESISTANCE FAN AND HARNESS FURTHER INVESTIGATION

Next: p2417, f2418

RESISTANCE SPARK GENERATOR AND HARNESS FURTHER INVESTIGATION

DISCONNECT CONNECTOR X3 AND FROM THE PCB

Next: !p2421, f2422

PRESSURE FAN MAX RATE

ATTACH FGA TO FAN PR

Next: p2631, f2632

PRESSURE FAN LOCKOUT

1. ATTACH TEL

Next: p2586, f2587

PRESSURE FAN LOCKOUT

1. ATTACH TEL

Next: p2560, f2561

INSPECTION CONDENSATE PIPE

Next: p2538, !f2539

PRESSURE FAN LOCKOUT

1. ATTACH TEL

Next: p2540, f2541

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p2548, !f2549

INSPECTION FAN BEARING PLATE

Next: p2544, !f2545

INSPECTION HEAT EXCHANGER FLUE WAYS

Next: !p2546, !f2547

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p2550, ?2552, ?2554

INSPECTION FLUE

Next: p2556, !f2557

INSPECTION HOUSING BURNER

REMOVE THE BURNER HOUSING FROM THE BOILER ASSEMBLY
REMOVE THE SILENCER FROM THE BURNER HOUSING

Next: !p2558, !f2559

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p2568, !f2569

INSPECTION FAN BEARING PLATE

Next: p2564, !f2565

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: !p2566, !f2567

VOLTAGE RECTIFICATION CIRCUIT

{GAINPCBACS}
ATTACH A CROCODILE CLIP TO THE RECTIFICATION LEAD

Next: p2570, ?2572, ?2574

RESISTANCE RECTIFICATION LEAD

{GAINPCBACS}
DISC

Next: p2582, !f2583

RESISTANCE HARNESS RECTIFICATION GROUND

DISCONNECT X5 FROM THE PCB
DISCONNECT THE FLAME SENSE LEAD FROM THE SAFETY SENSOR

Next: !p2580, !f2581

RESISTANCE RECTIFICATION CIRCUIT TO EARTH

{GAINPCBACS}
DISCONNECT CONNECTOR X5 FROM THE PCB

Next: !p2576, f2577

INSPECTION RECTIFICATION ELECTRODE

SLIDE THE SPARK GENE

Next: !p2584, !f2585

PRESSURE GAS INLET AND DROP

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT
CH TEMPERATURE CONTROL SET TO MAX

Next: p2598, ?2600, ?2602

INSPECTION FLUE

Next: p3601, !f2591

INSPECTION FAN BEARING PLATE

Next: p2592, !f2593

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: p2594, !f2595

INSPECTION HEAT EXCHANGER FLUE WAYS

Next: !p2596, !f2597

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p2617, !f2618

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p2604, ?2605, ?2607

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}
CH TEMPERATURE CONTROL SET TO MAX

Next: p2609, f2610

RESISTANCE HARNESS GAS VALVE

DISCONNECT THE PLUG FROM THE GAS VALVE

Next: !p2615, !f2616

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p2619, ?2621, ?2623

OBSERVATION SPARK GENERATOR OUTPUT

REMOVE THE AIR INTAK

Next: p2625, f2626

INSPECTION ELECTRODE ASSEMBLY

SLIDE THE SPARK GENE

Next: !p2629, !f2630

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT
CH TEMPERATURE CONTROL SET TO MAX

Next: p2637, !f2638

INSPECTION FAN BEARING PLATE

Next: !p2635, !f2636

COMBUSTION TEST MAX AND MINIMUM

Next: !p2639, ?2641, ?2643

INSPECTION AIR INTAKE FAN

REMOVE THE FAN AIR INTAKE FROM THE FAN

Next: p2647, !f2648

INSPECTION RECTIFICATION ELECTRODE

SLIDE THE SPARK GENE

Next: !p2645, !f2646

INSPECTION CONDENSATE PIPE

Next: p3486, !f2650

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: p3530, ?2653, ?2655

RESISTANCE GAS VALVE AND HARNESS

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: !p2688, f2669

INSPECTION WATER INGRESS GAS VALVE AND PCB

Next: p2709, !f2710

RESISTANCE GAS VALVE AND HARNESS TO EARTH

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: !p2711, f2712

OBSERVATION PUMP RUNS (FAULT CODE)

Next: p1417, f2721

RESISTANCE HARNESS PUMP

DISCONNECT THE PLUG FROM THE PUMP

Next: !p2723, !f2724

OBSERVATION PUMP RUNS (FAULT CODE)

Next: p1444, f2743

RESISTANCE HARNESS PUMP

DISCONNECT THE PLUG FROM THE PUMP

Next: !p2746, !f2747

OBSERVATION PUMP RUNS

CH TEMPERATURE CONTROL SET TO MAX

Next: p1465, f2764

RESISTANCE HARNESS PUMP

DISCONNECT THE PLUG FROM THE PUMP

Next: !p2767, !f2768

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: p2323, !f2774

INSPECTION HOUSING BURNER

REMOVE THE BURNER HOUSING FROM THE BOILER ASSEMBLY
REMOVE THE SILENCER FROM THE BURNER HOUSING

Next: p2778, !f2779

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: !p2780, !f2781

INSPECTION AIR INLET INTEGRITY

REFIT COMBUSTION CHA

Next: p2642, f3478

INSPECTION PRESSURE SYSTEM

Next: p656, !f311

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p3301, !f312

OBSERVATION BOILER RESET FAULT 258 356

Next: !p3156, !f3157

INFORMATION BLANK DISPLAY

THE DISPLAY FOR THIS

Next: p3190, !f3191

RESISTANCE FUSE (PCB)

REMOVE THE FUSE FROM ITS HOUSING

Next: p3184, f3185

OBSERVATION DISCONNECT X5 AT PCB

{GAINPCBACS}
DISCONNECT CONNECTOR X5 AT THE PCB AND MAKE SAFE
(THIRD CONNECTOR FROM THE LEFT)

Next: !p3188, !f3189

OBSERVATION BOILER SELF CHECK NO DISPLAY

ENSURE NO DEMANDS

Next: p3432, ?3194, ?3196, ?3198, ?3200, ?3202, ?3204

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p3248, !f3249

INSPECTION CODE PLUG

{GAINPCBACS}

Next: p3240, !f3241

VOLTAGE FAN SELF CHECK

{GAINPCBACS}

Next: p3236, !f3237

RESISTANCE SENSOR FLOW AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p3222, f3223

TEMPERATURE FLOW (BOILER FIRING)

REMOVE AIR INTAKE FROM APPLIANCE

Next: p3212, !f3213

TEMPERATURE FLOW (PUMP RUNNING)

REMOVE AIR INTAKE FROM APPLIANCE

Next: p3206, !f3207

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p3208, !f3209

RESISTANCE FROST PROTECTION

GAIN ACCESS TO LOWER PCB PANEL

Next: !p3210, !f3211

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p3429, !f3215

RESISTANCE SENSOR SAFETY AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p3226, f3227

INSPECTION WATER INGRESS GAS VALVE AND PCB

Next: p3230, !f3231

RESISTANCE GAS VALVE AND HARNESS TO EARTH

DISCONNECT CONNECTOR X4 FROM THE PCB

Next: !p3232, f3233

RESISTANCE HARNESS FAN

DISCONNECT FAN CONNECTOR FROM FAN

Next: !p3238, !f3239

RESISTANCE HARNESS CODE PLUG

DISCONNECT THE CONNECTOR FROM THE CODE PLUG

Next: p3242, !f3243

VOLTAGE FAN SELF CHECK

{GAINPCBACS}

Next: p3244, !f3245

RESISTANCE HARNESS FAN

DISCONNECT FAN CONNECTOR FROM FAN

Next: !p3246, !f3247

RESISTANCE HARNESS PUMP

DISCONNECT THE PLUG FROM THE PUMP

Next: !p3250, !f3251

INSPECTION PRESSURE SYSTEM

Next: p328, !f329

PUMP LIMPET TEST

Next: p366, !f330

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p3295, !f3296

RESISTANCE SENSOR FLUE AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X7 FROM THE PCB

Next: !p3297, f3298

INSPECTION EXTERNAL BYPASS

Next: !p3302, !f3303

PRESSURE FAN MAX RATE

ATTACH FGA TO FAN PR

Next: p3307, f3308

INSPECTION GAS SUPPLY TUBE

UNSCREW THE GAS SUPPLY TUBE FROM THE GAS VALVE

Next: !p3315, ?3317, ?3319

INSPECTION FAN BEARING PLATE

Next: p3311, !f3312

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: !p3313, !f3314

INSPECTION EXTERNAL BYPASS

Next: p3358, !f3335

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3341, !f3342

INSPECTION EXTERNAL BYPASS

Next: p1471, !f3357

TEMPERATURE DIFFERENTIAL FLOW AND RETURN

CH TEMPERATURE CONTROL TO MAX

Next: p3359, f3360

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3365, !f3366

INSPECTION EXTERNAL BYPASS

Next: p3379, !f3380

TEMPERATURE DIFFERENTIAL FLOW AND RETURN

CH TEMPERATURE CONTROL TO MAX

Next: p3381, f3382

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3387, !f3388

INSPECTION EXTERNAL BYPASS

Next: p3401, !f3410

TEMPERATURE DIFFERENTIAL FLOW AND RETURN

CH TEMPERATURE CONTROL TO MAX

Next: p3402, f3403

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3408, !f3409

INSPECTION EXTERNAL BYPASS

Next: p3412, !f3413

TEMPERATURE DIFFERENTIAL FLOW AND RETURN

CH TEMPERATURE CONTROL TO MAX

Next: p3414, f3415

TEMPERATURE DIFFERENTIAL FLOW AND RETURN INTERNAL

CH TEMPERATURE CONTR

Next: !p3420, !f3421

VOLTAGE CH AND DHW DEMAND INTO BOARD (NO DEMAND)

GAIN ACCESS TO LOWER PCB PANEL
ENSURE CENTRAL HEATING AND DHW ARE TURNED OFF

Next: !p3427, !f3428

VOLTAGE CH AND DHW DEMAND INTO BOARD (NO DEMAND)

GAIN ACCESS TO LOWER PCB PANEL
ENSURE CENTRAL HEATING AND DHW ARE TURNED OFF

Next: !p3430, !f3431

OBSERVATION PUMP RUNS

CH TEMPERATURE CONTROL SET TO MAX

Next: p3433, f3434

OBSERVATION FAN RUNS

CH TEMPERATURE CONTROL SET TO MAX

Next: !p3439, f3440

RESISTANCE SENSOR FLOW AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p3445, !f3446

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p3447, !f3448

RESISTANCE SENSOR FLUE AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X7 FROM THE PCB

Next: !p3449, f3450

INSPECTION FLUE SEALS

Next: p1854, ?3464, ?3466, ?3468

INSPECTION FLUE SEALS

Next: p2649, ?3493, ?3495, ?3497

INSPECTION FAN BEARING PLATE

Next: p2365, !f3528

INSPECTION FAN BEARING PLATE

Next: p3531, !f3532

INSPECTION BURNER ASSEMBLY

REMOVE THE FAN HOOD ASSEMBLY
REMOVE BURNER

Next: p3533, !f3534

INSPECTION HEAT EXCHANGER FLUE WAYS

Next: !p3535, !f3536

RESISTANCE SENSOR RETURN AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: !p3538, !f3539

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p2175, !f3595

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p2633, !f3600

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p2590, !f3609

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p2562, !f3616

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p2542, !f3623

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p3309, !f3630

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p2321, !f3639

INSPECTION MIXING UNIT ASSEMBLY

DISCONNECT THE FAN C

Next: p2068, !f3648

INSPECTION CH TEMP SETTING

CH TEMPERATURE CONTROL KNOB SET TO MAX

Next: p702, !f378

PUMP LIMPET TEST

Next: p310, !f672

OBSERVATION FAULT CODE AT SHUTDOWN

CH TEMPERATURE CONTROL SET TO MAX

Next: p708, f715

RESISTANCE SENSOR FLOW

REMOVE THE AIR INTAKE FROM THE FAN
DISCONNECT WIRES FROM FLOW SENSOR

Next: p709, !f710

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p711, !f712

RESISTANCE SENSOR RETURN AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: p3411, !f713

INSPECTION CH OUTPUT SETTINGS

Next: p2342, !f730

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT
CH TEMPERATURE CONTROL SET TO MAX

Next: p3306, !f733

INSPECTION PUMP SETTINGS

Next: !p778, !f779

OBSERVATION BOILER RESET COMBI FAULT

Next: !p3323, !f3338

OBSERVATION BOILER RESET

ENSURE APPLIANCE IS COOL

Next: p886, f887

TEMPERATURE EXHAUST GAS (FAULT CODE)

CH TEMPERATURE CONTR

Next: !p892, ?894, ?896

RESISTANCE SENSOR SAFETY

DISCONNECT WIRES FROM SAFETY SENSOR

Next: p924, !f925

RESISTANCE SENSOR SAFETY AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X6 FROM THE PCB

Next: !p926, !f927

RESISTANCE HARNESS CODE PLUG

DISCONNECT THE CONNECTOR FROM THE CODE PLUG

Next: !p983, !f984

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p952, !f953

RESISTANCE HARNESS PUMP

DISCONNECT THE PLUG FROM THE PUMP

Next: !p954, !f955

System Information

  • Total Tests: 919
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control