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:

GLOWWORM ULTIMATE C / BETACOM A / BETACOM 2 / EASICOM

GLOBALLY REPLACED

Next: &1, *

NO FAULT FOUND

Next: nff

CASE REMOVAL

Next: &1599, !f2

TYPE OF DIAGNOSTIC PROCEDURE

Next: &43, !f4

INITIAL SETUP AND STANDBY CHECK

ENSURE NO DEMANDS ARE PRESENT

Next: &3, ?10, ?1865

OBSERVATION PUMP RUNS

Next: &31, f2334

OBSERVATION BURNER IGNITION & ESTABLISH

Next: &1725, ?110, ?112, ?114, ?1635

DHW FLOW RATE

Next: &87, f44

OBSERVATION FAN RUNS - DHW DEMAND

ENSURE BOILER IS COOL

Next: &29, ?88, ?90

CH OPERATION

Next: &2494, ?560, ?562, ?564

DHW OPERATION

Next: &333, ?336, ?338, ?340, ?342

DIAGNOSTICS CODE GUIDE

Next: &nff, !f2360

FAULT CODE F00/F10

NOT USED

Next: &nff, f735

FAULT CODE F23 - F24

NOT USED

Next: &nff, f1060

FAULT CODE F20

NOT USED

Next: &nff, f1199

FAULT CODE F01/F11

NOT USED

Next: &nff, f747

FAULT CODE F84

NOT USED

Next: &nff, f839

FAULT CODE F83

NOT USED

Next: &nff, f782

FAULT CODE F76

NOT USED

Next: &nff, f1378

FAULT CODE F73 - F74

NOT USED

Next: &nff, f931

FAULT CODE F71

NOT USED

Next: &nff, f1192

FAULT CODE F70

NOT USED

Next: &nff, f1422

FAULT CODE F61 TO F67

NOT USED

Next: &nff, f1388

FAULT CODE F49

NOT USED

Next: &nff, f1361

FAULT CODE F32

NOT USED

Next: &nff, f1152

FAULT CODE F26/F77

NOT USED

Next: &nff, f1142

FAULT CODE ERR

NOT USED

Next: &nff, f1582

FAULT CODE F22

NOT USED

Next: &nff, f948

FUSE FURTHER INVESTIGATION

NOT USED

Next: &nff, f1579

FAULT CODE HISTORY

NOT USED

Next: &nff, f1594

OBSERVATION DISPLAY

ON/OFF SWITCH ON (RECESSED POSITION, PUSHED IN)

Next: &7, ?1600, ?1631, ?1674, ?2110

STATUS CODES

NOT USED

Next: &nff, f1671

OBSERVATION BOILER RESPONDS TO CH DEMAND

Next: &335, f1824

TRISELINKROOT

CHRIS PUT THIS HERE

Next: &nff, f2376

OBSERVATION PUMP OVERRUN TIME

Next: &nff, !f2495

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f2528

LITE DIAGNOSTIC

DIAGNOSIS RELIES ON

Next: &nff, !f2530

HEADER FOR QADAI FLOW THERMISTOR

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2532

HEADER FOR QADAI RETURN THERMISTOR

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2536

HEADER FOR QADAI DIVERTER VALVE RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2540

HEADER FOR QADAI DIVERTER VALVE VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2544

HEADER FOR QADAI GAS VALVE VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2548

HEADER FOR QADAI GAS VALVE RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2552

HEADER FOR QADAI PUMP RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2556

HEADER FOR QADAI AC VOLTAGE TO PUMP

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2560

HEADER FOR QADAI DHW FLOW TURBINE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2564

HEADER FOR SPARK GENERATOR RESISTANCE QADAI

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2571

HEADER FOR SPARK GENERATOR VOLTAGE QADAI

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2572

FAN DOES NOT RUN

SENSOR - TEMPERATURE

Next: End

FAN DOES NOT RUN 2

SENSOR - TEMPERATURE

Next: End

FAN DOES NOT RUN

CIRCUIT BOARD

Next: End

FAULT CODE F23 - F24

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F23 - F24

PUMP

Next: End

FAN DOES NOT RUN

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F23 - F24

SENSOR - TEMPERATURE

Next: End

FAULT CODE F23 - F24 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F23 - F24 4

SENSOR - TEMPERATURE

Next: End

FAULT CODE F23 - F24 3

SENSOR - TEMPERATURE

Next: End

FAULT CODE F26

GAS VALVE

Next: End

FAULT CODE F26

CIRCUIT BOARD

Next: End

FAULT CODE F71

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F71

SENSOR - TEMPERATURE

Next: End

FAULT CODE F71

CIRCUIT BOARD

Next: End

FAULT CODE F20

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F20

TAP HEATING

Next: End

SELF TEST

FROST PROTECTION NORMAL OPERATION

Next: End

FAULT CODE F20 4

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 3

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 5

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 6

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20

Next: End

FAULT CODE F20 4

PUMP

Next: End

FAULT CODE F20

CIRCUIT BOARD (PUMP OVERRUN)

Next: End

FAULT CODE F32 3

CIRCUIT BOARD

Next: End

FAULT CODE F32

CIRCUIT BOARD

Next: End

FAULT CODE F32

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F32 2

CIRCUIT BOARD

Next: End

FAULT CODE F49

CIRCUIT BOARD

Next: End

FAULT CODE F49 2

CIRCUIT BOARD

Next: End

FAULT CODE F83

PUMP

Next: End

FAULT CODE F76

CIRCUIT BOARD

Next: End

FAULT CODE F70

CIRCUIT BOARD

Next: End

SELF TEST

SENSOR - TEMPERATURE

Next: End

FUSE FURTHER INVESTIGATION

PUMP

Next: End

FAULT CODE ERR

HARNESS - WIRING (DISPLAY PCB)

Next: End

BURNER DOES NOT IGNITE

CIRCUIT BOARD AND GAS VALVE

Next: End

FAULT CODE HISTORY

Z REDIRECTION

Next: End

NO DISPLAY

FUSE (FUSED SPUR)

Next: End

NO DISPLAY

SENSOR

Next: End

NO DISPLAY

FAN

Next: End

FAULT CODES

Z REDIRECTION

Next: End

FAULT CODE F32 2

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F32 3

HARNESS - WIRING (MAIN)

Next: End

STATUS CODES

Z REDIRECTION

Next: End

CH DOES NOT RESPOND 1

CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND 2

CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND

CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND 4

CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND 3

CIRCUIT BOARD

Next: End

LOW PRESSURE

SYSTEM PRESSURE

Next: End

CASE OFF

Z REDIRECTION

Next: End

DHW COOL RADS COOL

PUMP

Next: End

DHW COOL RADS COOL

AIR BOX

Next: End

DHW COOL RADS COOL

SENSOR - TEMPERATURE INSTALLATION

Next: End

DHW COOL RADS COOL

SENSOR - TEMPERATURE

Next: End

DHW COOL RADS COOL 2

SENSOR - TEMPERATURE

Next: End

DHW TOO HOT

SENSOR - TEMPERATURE INSTALLATION

Next: End

DHW TOO HOT

SENSOR - TEMPERATURE

Next: End

DHW TOO HOT 2

SENSOR - TEMPERATURE

Next: End

DHW RUNS HOT THEN COLD

PUMP

Next: End

DHW RUNS HOT COOL

SENSOR - TEMPERATURE INSTALLATION

Next: End

DHW RUNS HOT THEN COLD

SENSOR - TEMPERATURE

Next: End

DHW RUNS HOT THEN COLD 2

SENSOR - TEMPERATURE

Next: End

NO DISPLAY

FUSE PCB

Next: End

BURNER DOES NOT IGNITE 2

HARNESS - WIRING (MAIN)

Next: End

FAN DOES NOT RUN

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAN DOES NOT RUN 4

SENSOR - TEMPERATURE

Next: End

FAN DOES NOT RUN 3

SENSOR - TEMPERATURE

Next: End

RESET OPTION

Z REDIRECTION

Next: End

BURNER DOES NOT IGNITE 3

HARNESS - WIRING (MAIN)

Next: End

BURNER DOES NOT IGNITE 4

HARNESS - WIRING (MAIN)

Next: End

BURNER DOES NOT ESTABLISH

CIRCUIT BOARD

Next: End

BURNER DOES NOT ESTABLISH

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT ESTABLISH

HARNESS - WIRING (MAIN)

Next: End

DOES NOT EST

CONDENSATE TRAP / SYPHON

Next: End

DHW COOL RADS COOL

GAS INLET PRESSURE

Next: End

FAULT CODE F83 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F83

SENSOR - TEMPERATURE

Next: End

FAULT CODE F83 4

SENSOR - TEMPERATURE

Next: End

FAULT CODE F83 3

SENSOR - TEMPERATURE

Next: End

FAULT CODE F61-67

GAS VALVE

Next: End

FAULT CODE F61 - 67

CIRCUIT BOARD AND GAS VALVE

Next: End

FAULT CODE F61 - 67

PCB WIRING CONNECTIONS

Next: End

FAULT CODE F61 - 67

CIRCUIT BOARD

Next: End

FAULT CODE F83

HEAT EXCHANGER - DHW

Next: End

DHW FLOW RATE

FLOW SWITCH

Next: End

DHW COOL RADS HEAT

CIRCUIT BOARD

Next: End

NO POWER FOR DHW

HARNESS - WIRING (DIVERTER VALVE)

Next: End

NO POWER TO DIVERTER FOR CH

CIRCUIT BOARD

Next: End

NO POWER FOR CH

HARNESS - WIRING (DIVERTER VALVE)

Next: End

STUCK IN DHW POSITION

DIVERTER VALVE

Next: End

NO POWER TO PUMP

HARNESS - WIRING (PUMP)

Next: End

NO POWER TO PUMP 2

HARNESS - WIRING (PUMP)

Next: End

NO POWER TO PUMP 3

HARNESS - WIRING (PUMP)

Next: End

NO POWER TO PUMP 4

HARNESS - WIRING (PUMP)

Next: End

NOT ENOUGH HEATING OUTPUT

PARAMETER HEATING POWER

Next: End

BLANK FOR DIAGNOSTICS CODE GUIDE

Z REDIRECTION

Next: End

FAULT CODE F61 - F67

PARAMETER DSN

Next: End

FAULT CODE F70

PARAMETER DSN

Next: End

POOR DHW

PARAMETER DSN - DHW

Next: End

DHW NOT RECOGNISED

FLOW SWITCH

Next: End

THERMAL FUSE SECTION

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F76

CABLE - SENSOR TO HARNESS - HEAT EXCHANGER

Next: End

BLANK DISPLAY

HARNESS - WIRING (DISPLAY PCB)

Next: End

TRISE2

Z REDIRECTION

Next: End

FUSE INVESTIGATION

HARNESS - WIRING (DIVERTER VALVE)

Next: End

WATER LEAK DAMAGED HEAD

DIVERTER VALVE MOTOR AND BODY

Next: End

FUSE INVESTIGATION SPARK GEN

HARNESS - WIRING (MAIN)

Next: End

LOW GAS RATE

CONDENSATE TRAP / SYPHON

Next: End

LOW GAS RATE

FLUE

Next: End

LOW GAS RATE

BURNER

Next: End

BURNER DOES NOT IGNITE

GAS INLET PRESSURE

Next: End

LOW GAS RATE

FAN

Next: End

LOW GAS RATE

HEAT EXCHANGER

Next: End

FAULTY MIXTER TAP ETC

PLUMBING ISSUE

Next: End

SELF TEST 2

CIRCUIT BOARD

Next: End

BOILER FIRES SELF TEST 2

CIRCUIT BOARD

Next: End

FAULT CODE F23 - F24 2

TAP HEATING

Next: End

FAULT CODE F23 - F24

Next: End

FULL MODEL

CIRCUIT BOARD (PUMP OVERRUN)

Next: End

DHW NOT RECOGNISED

CIRCUIT BOARD

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER - WATER WAYS

Next: End

DHW RUNS HOT THEN COLD

HEAT EXCHANGER - WATER WAYS

Next: End

FAULT CODE F20

HEAT EXCHANGER - WATER WAYS

Next: End

FAULT CODE F23 - F24

HEAT EXCHANGER - WATER WAYS

Next: End

POOR HW

BYPASS (BLOCKED/DAMAGED)

Next: End

HW RUNS HOT THEN COLD

BYPASS (BLOCKED/DAMAGED)

Next: End

F20

BYPASS (BLOCKED/DAMAGED)

Next: End

F23/24

BYPASS (BLOCKED/DAMAGED)

Next: End

BLANK FOR QADAI

Z REDIRECTION

Next: End

BURNER DOES NOT IGNITE 2

GAS VALVE

Next: End

BLANK FOR LITE DIAGNOSTIC

Z REDIRECTION

Next: End

QADAI 2

SENSOR - TEMPERATURE

Next: End

QADAI

SENSOR - TEMPERATURE

Next: End

QADAI VOLTAGE TO DIVERTER MOTOR

CIRCUIT BOARD

Next: End

QADAI GAS VALVE TOP SOLENOID VOLTAGE

CIRCUIT BOARD

Next: End

QADAI

GAS VALVE

Next: End

QADAI

BODY - HYDRAULIC BLOCK

Next: End

QADAI NO POWER TO PUMP

CIRCUIT BOARD

Next: End

QADAI

FLOW SWITCH

Next: End

QADAI

DIVERTER VALVE MOTOR

Next: End

QADAI

SPARK GENERATOR

Next: End

NO VOLTAGE TO SPARK GENERATOR QADAI

CIRCUIT BOARD

Next: End

SELF TEST 2

SENSOR - TEMPERATURE

Next: End

BURNER DOES NOT IGNITE

CONDENSATE TRAP / SYPHON

Next: End

BURNER NOISY/ BAFFLES OUT

CONDENSATE TRAP / SYPHON

Next: End

BURNER NOISY/ BAFFLES OUT

GAS INLET PRESSURE

Next: End

BURNER NOISY/ BAFFLES OUT

AIR BOX

Next: End

BURNER NOISY/ BAFFLES OUT

FLUE

Next: End

BURNER NOISY/ BAFFLES OUT

BURNER

Next: End

BURNER NOISY/ BAFFLES OUT

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE

AIR BOX

Next: End

BURNER DOES NOT IGNITE 2

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BURNER DOES NOT IGNITE

BURNER

Next: End

BURNER DOES NOT IGNITE

HEAT EXCHANGER

Next: End

TYPE DIAG PROCEDURE

Z REDIRECTION

Next: End

DHW FLOW RATE

TAP - ISOLATION - COLD WATER

Next: End

FLOW RATE

COLD WATER SUPPLY

Next: End

RADS DO NOT HEAT

TAP HEATING

Next: End

RADS DO NOT HEAT

PUMP

Next: End

SYSTEM PRESSURE RISES

EXPANSION VESSEL

Next: End

RAD TEMP LOW

SENSOR - TEMPERATURE

Next: End

RADS DO NOT HEAT

BYPASS

Next: End

RAD TEMP LOW 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F00/F10

CIRCUIT BOARD

Next: End

FAULT CODE F00/F10

SENSOR - TEMPERATURE

Next: End

FAULT CODE F01/F11

SENSOR - TEMPERATURE

Next: End

FAULT CODE F01/F11

CIRCUIT BOARD

Next: End

FAULT CODE F83

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F83

HEAT EXCHANGER - WATER WAYS

Next: End

FAULT CODE F84

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F84

SENSOR - TEMPERATURE

Next: End

FAULT CODE F84 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F84

CIRCUIT BOARD

Next: End

FAULT CODE F84 2

CIRCUIT BOARD

Next: End

FAULT CODE F73 - F74

CIRCUIT BOARD

Next: End

FAULT CODE F73 - F74

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F73 - F74 2

CIRCUIT BOARD

Next: End

FAULT CODE F22

CIRCUIT BOARD

Next: End

FAULT CODE F22 2

CIRCUIT BOARD

Next: End

DHW NOT RECOGNISED

HARNESS - WIRING (MAIN)

Next: End

FAN DOES NOT RUN 2

CIRCUIT BOARD

Next: End

BOILER RESET

SYSTEM PRESSURE LOSS - F22

Next: End

FAN DOES NOT RUN

FAN

Next: End

FAULT CODE F23 - F24 2

CIRCUIT BOARD

Next: End

FAULT CODE F26

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F26

FAULT CODE RESET

Next: End

FAULT CODE F71

FAULT CODE RESET

Next: End

FAULT CODE F20

CIRCUIT BOARD

Next: End

FAULT CODE F20

FAULT CODE RESET

Next: End

FAULT CODE F20 2

CIRCUIT BOARD

Next: End

FAULT CODE F20 3

CIRCUIT BOARD

Next: End

FAULT CODE F32

FAN

Next: End

FAULT CODE F32

FAULT CODE RESET

Next: End

FAULT CODE RESET - F49

FAULT CODE RESET - F49

Next: End

FAULT CODE F49

EBUS CONTROLS

Next: End

FAULT CODE F76

FAULT CODE RESET

Next: End

FAULT CODE F70

FAULT CODE RESET

Next: End

FAULT CODE F70

FACTORY RESET

Next: End

FAULT CODE ERR

FAULT CODE RESET

Next: End

FAULT CODE ERR

FACTORY RESET

Next: End

FAULT CODE ERR

PCB (DISPLAY)

Next: End

FAULT CODE HISTORY 2

Z REDIRECTION

Next: End

NO DISPLAY

Next: End

FUSE FURTHER INVESTIGATION

Z REDIRECTION

Next: End

FAULT CODES 2

Z REDIRECTION

Next: End

FAULT CODE F32 4

CIRCUIT BOARD

Next: End

FAULT CODE F32 2

FAN

Next: End

FAULT CODE F32 3

FAN

Next: End

BURNER DOES NOT IGNITE

CIRCUIT BOARD AND HARNESS - WIRING

Next: End

STATUS CODES 2

Z REDIRECTION

Next: End

CH DOES NOT RESPOND 4

Next: End

CH DOES NOT RESPOND 6

MECHANICAL TIMER

Next: End

CH DOES NOT RESPOND

EBUS CONTROLS

Next: End

CH DOES NOT RESPOND 3

Next: End

CH DOES NOT RESPOND 8

MECHANICAL TIMER

Next: End

LOW SYSTEM PRESSURE

Z REDIRECTION

Next: End

DHW TOO HOT

CIRCUIT BOARD

Next: End

DHW RUNS HOT THEN COLD

CIRCUIT BOARD

Next: End

NO DISPLAY

Z REDIRECTION

Next: End

NO DISPLAY 2

PCB (DISPLAY)

Next: End

BURNER DOES NOT IGNITE 2

FAN

Next: End

DHW NOT RECOGNISED 2

CIRCUIT BOARD

Next: End

RESET OPTIONS

Z REDIRECTION

Next: End

BURNER DOES NOT IGNITE

SPARK GENERATOR

Next: End

BURNER DOES NOT IGNITE 2

CIRCUIT BOARD

Next: End

FAULT CODE F32 5

CIRCUIT BOARD

Next: End

BURNER DOES NOT ESTABLISH 2

CIRCUIT BOARD

Next: End

BURNER DOES NOT ESTABLISH

SPARK GENERATOR

Next: End

FAULT CODE F83

CIRCUIT BOARD

Next: End

FAULT CODE F61 - 67

FAULT CODE RESET

Next: End

FAULT CODE F61 - 67

CIRCUIT BOARD AND HARNESS - WIRING

Next: End

FAULT CODE F61 - 67

FACTORY RESET

Next: End

LOW SYSTEM PRESSURE 2

SENSOR

Next: End

LOW SYSTEM PRESSURE

SENSOR

Next: End

LOW SYSTEM PRESSURE

BODY - HYDRAULIC BLOCK

Next: End

DHW COOL RADS COOL 2

SENSOR

Next: End

DHW COOL RADS COOL

SENSOR

Next: End

DHW COOL RADS COOL

BODY - HYDRAULIC BLOCK

Next: End

DHW RUNS HOT THEN COOL

SENSOR

Next: End

DHW RUNS HOT THEN COOL 2

SENSOR

Next: End

DHW RUNS HOT THEN COOL

BODY - HYDRAULIC BLOCK

Next: End

FAULT CODE F20

SENSOR

Next: End

FAULT CODE F20 2

SENSOR

Next: End

FAULT CODE F20

BODY - HYDRAULIC BLOCK

Next: End

FAULT CODE F22

SENSOR

Next: End

FAULT CODE F22 2

SENSOR

Next: End

FAULT CODE F22

BODY - HYDRAULIC BLOCK

Next: End

FAULT CODE F23 - F24

SENSOR

Next: End

FAULT CODE F23 - F24 2

SENSOR

Next: End

FAULT CODE F23 - F24

BODY - HYDRAULIC BLOCK

Next: End

FAULT CODE F73 - F74 2

SENSOR

Next: End

FAULT CODE F73 - F74 3

SENSOR

Next: End

FAULT CODE F73 - F74

BODY - HYDRAULIC BLOCK

Next: End

FAULT CODE F83

SENSOR

Next: End

FAULT CODE F83 2

SENSOR

Next: End

FAULT CODE F83

BODY - HYDRAULIC BLOCK

Next: End

DHW COOL RADS HEAT

DIVERTER VALVE MOTOR

Next: End

NOT MOVING TO CH POSITION

DIVERTER VALVE MOTOR

Next: End

PUMP DOES NOT RUN 2

PUMP

Next: End

PUMP DOES NOT RUN

CIRCUIT BOARD

Next: End

PUMP DOES NOT RUN 2 2

PUMP

Next: End

PUMP DOES NOT RUN 2

CIRCUIT BOARD

Next: End

PUMP DOES NOT RUN 2 3

PUMP

Next: End

PUMP DOES NOT RUN 3

CIRCUIT BOARD

Next: End

PUMP DOES NOT RUN 2 4

PUMP

Next: End

PUMP DOES NOT RUN 4

CIRCUIT BOARD

Next: End

NOT RECOGNISING DEMAND

SENSOR - EDGE CONNECTION - WATER FLOW

Next: End

HEAT EXCHANGER - THERMAL FUSE

HEAT EXCHANGER - THERMAL FUSE

Next: End

NO DISPLAY

CIRCUIT BOARD

Next: End

TRISE

Z REDIRECTION

Next: End

RESTRICTED OR BLOCKED

FILTER - DHW

Next: End

DHW FLOW RATE

FLOW RESTRICTOR

Next: End

RESTRICTED / BLOCKED

HEAT EXCHANGER - DHW

Next: End

FUSE INVESTIGATION

DIVERTER VALVE MOTOR

Next: End

FUSE INVESTIGATION

SPARK GENERATOR

Next: End

PCB BLOWING FUSE

CIRCUIT BOARD - FUSE BLOWN

Next: End

DHW COOL RADS COOL

CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

LOW GAS RATE

CIRCUIT BOARD

Next: End

SELF TEST 2

EBUS CONTROLS

Next: End

BURNER DOES NOT IGNITE

CIRCUIT BOARD

Next: End

BOILER FIRES SELF TEST 2

Next: End

FAULT CODE F23 - F24

FAULT CODE RESET

Next: End

INTERNALLY SHORTED

FLOW SWITCH

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER - DHW

Next: End

DHW RUNS HOT THEN COLD

HEAT EXCHANGER - DHW

Next: End

FAULT CODE F20

HEAT EXCHANGER - DHW

Next: End

FAULT CODE F23/24

HEAT EXCHANGER - DHW

Next: End

BURNER DOES NOT IGNITE

HARNESS - WIRING (MAIN)

Next: End

FLOW THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

RETURN THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

DIVERTER VALVE MOTOR

RESULT AS EXPECTED

Next: End

PCB VOLTAGE TO DIVERTER VALVE

RESULT AS EXPECTED

Next: End

PCB GAS VALVE VOLTAGE TOP SOLENOID

RESULT AS EXPECTED

Next: End

GAS VALVE TOP SOLENOID

RESULT AS EXPECTED

Next: End

PUMP

RESULT AS EXPECTED

Next: End

PCB POWER TO PUMP AC

RESULT AS EXPECTED

Next: End

DHW FLOW TURBINE

RESULT AS EXPECTED

Next: End

SPARK GENERATOR

RESULT AS EXPECTED

Next: End

VOLTAGE TO SPARK GENERATOR

RESULT AS EXPECTED

Next: End

BURNER NOISY/ BAFFLES OUT

GAS VALVE

Next: End

SELF TEST

CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

BURNER DOES NOT IGNITE

FAN

Next: End

DHW COOL RADS HEAT

DIVERTER VALVE

Next: End

SYSTEM PRESSURE RISES

PIPEWORK - EXPANSION VESSEL

Next: End

RADS DO NOT HEAT

Next: End

RAD TEMP LOW

CIRCUIT BOARD

Next: End

FAULT CODE F00/F10

FAULT CODE RESET

Next: End

FAULT CODE F00/F10

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F01/F11

HARNESS - WIRING (MAIN)

Next: End

FAULT CODE F01/F11

FAULT CODE RESET

Next: End

FAULT CODE F83

FAULT CODE RESET

Next: End

FAULT CODE F84

FAULT CODE RESET

Next: End

FAULT CODE F73 - F74

SENSOR

Next: End

FAULT CODE F73 - F74

FAULT CODE RESET

Next: End

CH SYMBOL FLASHING AND CH FLOW TEMPERATURE BELOW 12 °C

CHARACTERISTIC TEST FROM INITIAL SETUP AND STANDBY CHECK

Next: p11

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p234

BURNER IGNITES SMOOTHLY BUT DOES NOT ESTABLISH - SPARKING CONTINUES

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p2126

BURNER IGNITES BUT IS NOISY AND/OR BAFFLES OUT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p279

BOILER GOES TO FAULT CODE F20 - TEMPERATURE BELOW 97°C

CHARACTERISTIC TEST FROM RUN BOILER TO MAX TEMP - FAULT CODE F20

Next: p1302

BOILER FLOW TEMPERATURE EXCEEDS 80°C AND BOILER STILL FIRED

CHARACTERISTIC TEST FROM RUN BOILER TO MAX TEMP - FAULT CODE F20

Next: p1304

FAN DOES NOT RUN - FAULT CODE F32 OCCURS

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS - FAULT CODE F32

Next: p1344

FAN RUNS AND/OR STOPS AND RESTARTS - FAULT CODE F32 OCCURS

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS - FAULT CODE F32

Next: p1360

DISPLAY NOT ILLUMINATED (BLANK)

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p1601

FAULT CODE DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p1632

FAULT CODE F32 DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1641

LOW SYSTEM PRESSURE DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p1941

24 VOLT EXTERNAL CONTROLS FITTED

CHARACTERISTIC TEST FROM OBSERVATION EXTERNAL CONTROLS FITTED

Next: p1846

EBUS CONTROLS FITTED

CHARACTERISTIC TEST FROM OBSERVATION EXTERNAL CONTROLS FITTED

Next: p1854

CH SYMBOL FLASHING AND CH FLOW TEMP ABOVE 12°C

CHARACTERISTIC TEST FROM INITIAL SETUP AND STANDBY CHECK

Next: p2455

PREVIOUSLY UNRECORDED FAULT SHOWN

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p2111

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2254

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2256

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2260

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2262

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2266

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2268

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2272

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2274

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2278

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2280

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2284

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2286

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2290

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2292

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2296

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2298

FILTER RESTRICTED OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION DHW FILTER AND FLOW LIMITER

Next: !p2381

FLOW LIMITER RESTRICTED OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION DHW FILTER AND FLOW LIMITER

Next: !p2383

TEMPERATURE RISE UNSATISFACTORY, RADIATORS HEAT WITH NO CH DEMAND

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p346

TEMPERATURE RISE UNSATISFACTORY, RADIATORS REMAIN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1999

DHW TOO HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p2033

DHW RUNS HOT THEN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p2040

BOILER REACHES TEMPERATURE BUT RADIATORS DO NOT HEAT SUFFICIENTLY

CHARACTERISTIC TEST FROM CH OPERATION

Next: p561

EXCESSIVE SYSTEM PRESSURE AS CH TEMPERATURE RISES

CHARACTERISTIC TEST FROM CH OPERATION

Next: p563

BOILER AND RADIATOR TEMPERATURE LOW

CHARACTERISTIC TEST FROM CH OPERATION

Next: p565

FAN DOES NOT RUN - DHW DEMAND RECOGNISED (TAP SYMBOL FLASHING)

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS - DHW DEMAND

Next: p99

FAN DOES NOT RUN - DHW DEMAND NOT RECOGNISED (TAP SYMBOL NOT FLASHING)

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS - DHW DEMAND

Next: p92

21/04/2023 14:51:39 2303_2_50_1 21/06/2023 13:15:13

16/06/2023 14:44:36

Next: End

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p102, !f103

RESET APPLIANCE - FAULT CODE F23 TO F24

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p1061, f1089

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1090, !f1091

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p1147, f1144

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p1148, !f1149

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: p1153, !f1339

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p1193, !f1194

RESET APPLIANCE - FAULT CODE F20

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p1206, f1201

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1202, !f1203

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p2509, !f2510

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1362, f1363

OBSERVATION ARE ANY EBUS CONTROLS FITTED

{GAINPCBACS}

Next: p1364, !f1365

RESISTANCE THERMAL FUSE AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: p1384, f1380

RESISTANCE HARNESS THERMAL FUSE

REMOVE CONNECTOR X20

Next: p2368, !f2369

RESET APPLIANCE - FAULT CODE F61 - F67

ENSURE NO DEMANDS ARE PRESENT

Next: p2231, f2235

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1423, f1424

OBSERVATION DS NUMBER

Next: p1425, !f2363

RESISTANCE PUMP AND HARNESS (FUSE FURTHER INVESTIGATION)

REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: p2385, !f1581

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1583, f1584

FACTORY RESET - PCB MAIN

ENSURE NO DEMANDS

Next: !p1585, f1586

RESISTANCE HARNESS INTERFACE

REMOVE CONNECTOR X51 FROM THE PCB
REMOVE PCB TO INTERFACE PCB CONNECTOR

Next: !p1587, !f1588

FAULT CODE HISTORY ACCESS

Next: !p1595, !f1596

RESISTANCE FUSE (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: !p1604, f1605

FUSE FURTHER INVESTIGATION (FUSED SPUR)

THE INFORMATION PROV

Next: !p1606, !f1607

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p1639, !f1640

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p1644, !f1645

ACTIVATE STATUS CODES

STATUS CODES OF T

Next: !p1672, !f1673

OBSERVATION EXTERNAL CONTROLS FITTED

{GAINPCBACS}

Next: p1858, ?1845, ?1853

OBSERVATION INTERNAL TIMER FITTED

Next: p1849, !f1850

OBSERVATION INTERNAL TIMER FITTED

Next: p1861, !f1862

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p2501, !f2502

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p2505, !f2506

FUSE FURTHER INVESTIGATION (PCB FUSE)

THE INFORMATION PROV

Next: !p2092, !f2093

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: p2122, f2100

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p2101, !f2102

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p2115, !f2116

INSPECTION ELECTRODE IGNITION

REMOVE IGNITION ELECTRODE

Next: p2132, !f2133

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2198, !f2199

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p2236, f2237

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p2238, !f2239

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2252, ?2253, ?2255

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2258, ?2259, ?2261

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2264, ?2265, ?2267

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2270, ?2271, ?2273

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2282, ?2283, ?2285

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2288, ?2289, ?2291

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2294, ?2295, ?2297

VOLTAGE PUMP

REMOVE COVER FROM PUMP ASSEMBLY

Next: !p2338, f2339

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR X14 FROM THE PCB

Next: !p2343, !f2341

VOLTAGE PUMP

REMOVE COVER FROM PUMP ASSEMBLY

Next: !p2345, f2346

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR X14 FROM THE PCB

Next: !p2347, !f2348

VOLTAGE PUMP

REMOVE COVER FROM PUMP ASSEMBLY

Next: !p2350, f2351

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR X14 FROM THE PCB

Next: !p2352, !f2353

VOLTAGE PUMP

REMOVE COVER FROM PUMP ASSEMBLY

Next: !p2355, f2356

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR X14 FROM THE PCB

Next: !p2357, !f2358

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND MAKE SAFE

Next: p238, f2098

RESISTANCE HARNESS INTERFACE

REMOVE CONNECTOR X51 FROM THE PCB
REMOVE PCB TO INTERFACE PCB CONNECTOR

Next: !p2373, !f2374

DHWTRISE

CHRIS PUT THIS HERE

Next: !p2377, !f2378

RESISTANCE HARNESS DIVERTER VALVE

REMOVE CONNECTORS X15 AND X13 FROM THE PCB AND
ELECTRICAL CONNECTOR TO THE DIVERTER VALVE

Next: p2389, !f2390

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p2393, !f2394

INSPECTION CONDENSATE PIPE

Next: p2422, !f2423

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: !p246, f247

DISCONNECT EBUS CONTROLS - SELF TEST

REMOVE CONNECTOR X17 FROM THE PCB

Next: !p2458, !f2459

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p1669, !f1589

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p2516, !f2520

VOLTAGE FLOW SENSOR - SEND (FLOW SENSOR DISCONNECTED)

REMOVE THE CONNECTOR FROM THE DHW FLOW SENSOR AND MAKE SAFE

Next: !p2499, !f2500

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p252, !f253

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: !p2533, !f2534

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2537, !f2538

RESISTANCE DIVERTER VALVE AND HARNESS

REMOVE CONNECTORS X15 AND X13 FROM THE PCB

Next: !p2541, !f2568

VOLTAGE DIVERTER VALVE AT PCB QADAI

{GAINPCBACS}

Next: !p2545, !f2546

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE AND MAKE SAFE

Next: !p2549, !f2550

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p2553, !f2554

RESISTANCE PUMP AND HARNESS (FUSE FURTHER INVESTIGATION)

REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: !p2557, !f2558

VOLTAGE PUMP

REMOVE COVER FROM PUMP ASSEMBLY

Next: !p2561, !f2562

VOLTAGE FLOW SENSOR DHW - RETURN

{GAINPCBACS}
RUN HOT WATER TAP AT 3 LITRES PER MINUTE

Next: !p2565, !f2567

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE CONNECTOR X21 FROM THE PCB

Next: !p2573, !f2574

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND MAKE SAFE

Next: !p2575, !f2576

INSPECTION FLUE ASSEMBLY

Next: p327, !f328

VOLTAGE DIVERTER VALVE AT PCB - DHW

{GAINPCBACS}

Next: p2318, !f2317

OBSERVATION DHW ISOLATION VALVE

Next: p45, !f46

VOLTAGE DIVERTER VALVE AT PCB - CH

{GAINPCBACS}

Next: p2326, !f2325

RESISTANCE THERMISTOR FLOW AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p736, f737

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: !p740, !f741

RESISTANCE THERMISTOR RETURN AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: p748, f749

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p750, !f751

RESET APPLIANCE - FAULT CODE 83

ENSURE NO DEMANDS ARE PRESENT

Next: p785, f2197

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p840, !f841

VOLTAGE SENSOR SYSTEM PRESSURE - RETURN

{GAINPCBACS}

Next: p932, f933

VOLTAGE SENSOR SYSTEM PRESSURE - SEND

Next: p934, !f935

VOLTAGE FLOW SENSOR - SEND

Next: p95, f2498

ADJUST PRIMARY SYSTEM PRESSURE - FAULT CODE F22

{GAINPCBACS}
LOCATE PRIMARY SYSTEM FILLING LOOP

Next: p949, f950

VOLTAGE SENSOR SYSTEM PRESSURE - SEND

Next: p2275, !f954

VOLTAGE FAN 22 VDC AT PCB

REMOVE ELECTRICAL CONNECTOR FROM FAN AND MAKE SAFE

Next: p106, !f107

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p104, !f105

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p108, !f109

OBSERVATION SYSTEM PRESSURE

Next: p1062, f2281

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2462, !f1070

OBSERVATION PUMP RUNS

Next: p1097, f2349

PUMP LIMPET

Next: p1077, !f1078

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ATTACH TEMPERATURE C

Next: p2488, f2491

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1092, !f1093

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1111, !f1125

TEMPERATURE FLOW - FROST PROTECTION

ATTACH TEMPERATURE CLAMP TO THE FLOW PIPE AS CLOSE TO THE FLOW THERMISTOR AS POSSIBLE

Next: p12, !f13

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p1071, !f1126

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1150, !f1151

OBSERVATION FAN RUNS - FAULT CODE F32

Next: !p1358, ?1340, ?1342

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1195, !f1196

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1197, !f1198

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p24, !f15

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1204, !f1205

OBSERVATION SYSTEM PRESSURE

Next: p1240, f2269

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p1214, !f1215

OBSERVATION PUMP RUNS

Next: p1286, f2344

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p1207, !f1268

PUMP LIMPET

Next: p1287, !f1322

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ATTACH TEMPERATURE C

Next: p1289, f1313

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p1323, !f1319

RUN BOILER TO MAX TEMP - FAULT CODE F20

ATTACH TEMPERATURE CLAMP TO PRIMARY HEAT EXCHANGER
FLOW PIPE AS ILLUSTRATED

Next: !p1299, ?1301, ?1303

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1305, !f1306

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1309, !f1310

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1307, !f1308

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1311, !f1312

OBSERVATION PUMP OVERRUN TIME

Next: p1297, !f1338

VOLTAGE FAN CONTROL PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM FAN AND MAKE SAFE

Next: p1345, !f1355

VOLTAGE FAN 22 VDC AT PCB

REMOVE ELECTRICAL CONNECTOR FROM FAN AND MAKE SAFE

Next: p1351, !f1352

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p1353, !f1354

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: !p1637, f1638

DISCONNECT EBUS CONTROLS

REMOVE CONNECTOR X17 FROM THE PCB

Next: !p1366, !f1367

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1385, !f1386

FACTORY RESET - PCB MAIN

ENSURE NO DEMANDS

Next: !p1427, !f1428

INSPECTION DHW FILTER AND FLOW LIMITER

ISOLATE AND DRAIN DHW
REMOVE THE DHW ISOLATION VALVE
REMOVE THE DHW FILTER

Next: !p2384, ?2380, ?2382

VOLTAGE MAINS POWER INPUT AT PCB

{GAINPCBACS}

Next: p2065, f1603

DISCONNECT WATER PRESSURE SENSOR CONNECTOR

REMOVE WATER PRESSURE SENSOR CONNECTOR AND MAKE SAFE

Next: p1608, !f1609

DISCONNECT FAN CONNECTOR

REMOVE ELECTRICAL CONNECTOR TO FAN ASSEMBLY AND MAKE SAFE

Next: p1610, !f1611

VOLTAGE DISPLAY AT INTERFACE PCB

GAIN ACCESS TO INTERFACE PCB (USE INSULATION MAT AS REQUIRED)

Next: !p2096, f2372

FAULT CODES

Next: !p1633, !f1634

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: !p2125, f1643

BYPASS EXTERNAL CONTROLS - 24V

DISCONNECT 24V EXTER

Next: !p1847, f1848

DISCONNECT INTERNAL PROGRAMMER

GAIN ACCESS TO UPPER

Next: !p1851, !f1852

DISCONNECT EBUS CONTROLS - CH DEMAND

DISCONNECT EBUS WIRING CONNECTIONS TO CONNECTOR X17 AND MAKE SAFE

Next: !p1855, !f1856

BYPASS EXTERNAL CONTROLS - 240V

REMOVE THE WIRE FROM

Next: !p1859, f1860

DISCONNECT INTERNAL PROGRAMMER

GAIN ACCESS TO UPPER

Next: !p1863, !f1864

OBSERVATION SYSTEM PRESSURE - LOW PRESSURE

Next: p1942, f2251

SYSTEM PRESSURE SET CORRECTLY

THE SYSTEM PRESSURE

Next: !p1949, !f1950

OBSERVATION SYSTEM PRESSURE

Next: p2138, f2257

PUMP LIMPET

Next: p2010, !f2011

INSPECTION AIR BOX

REMOVE AIR BOX FROM GAS VALVE

Next: p2012, !f2013

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2014, !f2015

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2016, !f2017

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p2018, !f2019

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ATTACH TEMPERATURE C

Next: p2020, f2021

OBSERVATION DS NUMBER

Next: p2440, !f2364

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2034, !f2035

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2036, !f2037

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2038, !f2039

OBSERVATION SYSTEM PRESSURE

Next: p2041, f2263

PUMP LIMPET

Next: p2042, !f2043

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2044, !f2045

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ATTACH TEMPERATURE C

Next: p2046, f2047

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2052, !f2053

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2054, !f2055

RESISTANCE FUSE PCB

REMOVE FUSE FROM PCB

Next: p1602, f2091

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2104, !f2105

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2106, !f2107

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2108, !f2109

ACCESS PREVIOUSLY UNRECORDED FAULT

Next: !p2112, !f2113

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p2123, !f2124

INSPECTION CONDENSATE PIPE

Next: p2127, !f2137

VOLTAGE RECTIFICATION AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND MAKE SAFE

Next: p2128, !f2129

VOLTAGE RECTIFICATION - BURNER IGNITED

Next: !p2130, f2131

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p2134, !f2135

PRESSURE GAS VALVE INLET - DHW

ATTACH PRESSURE GAUGE TO GAS ISOLATION VALVE TEST POINT

Next: p2009, !f2162

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2179, !f2195

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p788, !f2196

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2200, !f2201

OBSERVATION GAS VALVE CLOSURE

Next: !p2232, !f2233

OBSERVATION PCB CONNECTIONS

Next: p2240, !f2241

OBSERVATION DS NUMBER

Next: p2242, !f2362

FACTORY RESET - PCB MAIN

ENSURE NO DEMANDS

Next: !p2246, !f2247

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE SYSTEM PRESSURE SENSOR FROM THE LEFT HAND MANIFOLD

Next: !p2276, ?2277, ?2279

RESISTANCE HARNESS DIVERTER VALVE

REMOVE CONNECTORS X15 AND X13 FROM THE PCB AND
ELECTRICAL CONNECTOR TO THE DIVERTER VALVE

Next: !p2319, !f2320

INSPECTION DIVERTER VALVE BODY

REMOVE THE DIVERTER VALVE MOTOR FROM THE BODY

Next: p570, !f2329

RESISTANCE HARNESS DIVERTER VALVE

REMOVE CONNECTORS X15 AND X13 FROM THE PCB AND
ELECTRICAL CONNECTOR TO THE DIVERTER VALVE

Next: !p2327, !f2328

INSPECTION CONDENSATE PIPE

Next: p235, !f270

OBSERVATION SPARK AT ELECTRODE

Next: p236, f237

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS ISOLATION VALVE TEST POINT

Next: p295, !f243

INSPECTION SENSOR FLOW - DHW

ISOLATE COLD FEED TO BOILER
DRAIN DHW CIRCUIT
REMOVE DHW HALL SENSOR
REMOVE FLOW TURBINE

Next: !p2366, !f2367

RESISTANCE HARNESS THERMAL FUSE TO MAIN HARNESS

REMOVE CONNECTOR FROM THERMAL FUSE

Next: !p2370, !f2371

OBSERVATION SPARKING HEARD

REMOVE IGNITION LEAD FROM SPARK GENERATOR

Next: !p240, f2114

RESISTANCE DIVERTER VALVE AND HARNESS

REMOVE CONNECTORS X15 AND X13 FROM THE PCB

Next: p2386, f2387

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE CONNECTOR X21 FROM THE PCB

Next: !p2395, f2388

INSPECTION DIVERTER VALVE SPINDLE - WATER LEAK

REMOVE THE DIVERTER VALVE MOTOR FROM THE BODY

Next: !p2391, !f2392

BOILER OUTPUT

Next: !p2397, f2421

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p30, !f26

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE AND MAKE SAFE

Next: p244, f245

INSPECTION FLUE ASSEMBLY

Next: p2424, !f2425

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER

Next: p2433, !f2427

INSPECTION FAN

Next: p2436, !f2435

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p2439, !f2437

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p250, f251

TEMPERATURE TAP AND BOILER DISCREPANCY

Next: p2396, !f2454

OBSERVATION EXTERNAL CONTROLS FITTED - SELF TEST

{GAINPCBACS}

Next: p2456, f2457

DISCONNECT EXTERNAL CONTROLS

IF MAINS VOLTAGE EXT

Next: !p2460, !f2461

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p1069, !f2487

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: !p2489, !f2490

PRESSURE FAN - IGNITION

ATTACH FGA TO GAS VALVE PRESSURE OUTLET TEST POINT
REMOVE THE LEFT-HAND SIDE PANEL IF REQUIRED

Next: p323, f326

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: !p2503, !f2521

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: !p2507, !f2522

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: !p2511, !f2523

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: !p2517, !f2524

INSPECTION CONDENSATE PIPE

Next: p284, !f281

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS ISOLATION VALVE TEST POINT

Next: p282, !f283

INSPECTION FLUE ASSEMBLY

Next: p289, !f290

INSPECTION AIR BOX

REMOVE AIR BOX FROM GAS VALVE

Next: p280, !f288

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER

Next: p291, !f292

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p293, !f294

INSPECTION AIR BOX

REMOVE AIR BOX FROM GAS VALVE

Next: p242, !f321

INSPECTION ELECTRODE IGNITION

REMOVE IGNITION ELECTRODE

Next: !p324, !f325

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER

Next: p329, !f330

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p331, !f332

OBSERVATION POSITION DIVERTER VALVE - DHW

REMOVE DIVERTER VALVE HEAD FROM THE BODY
AND POSITION IT SO THE SPINDLE IS VISIBLE

Next: !p368, f353

OBSERVATION COLD WATER SUPPLY

Next: p47, !f48

INSPECTION SENSOR FLOW - DHW

ISOLATE COLD FEED TO BOILER
DRAIN DHW CIRCUIT
REMOVE DHW HALL SENSOR
REMOVE FLOW TURBINE

Next: p1590, !f2309

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p566, !f567

INSPECTION EXPANSION VESSEL PRESSURE

DISCHARGE PRIMARY SYSTEM WATER

Next: !p581, !f582

OBSERVATION MAXIMUM HEATING POWER

NO DEMANDS

Next: p583, !f2359

PUMP LIMPET

Next: p568, !f569

OBSERVATION POSITION DIVERTER VALVE - CH

REMOVE DIVERTER VALVE HEAD FROM THE BODY
AND POSITION IT SO THE SPINDLE IS VISIBLE

Next: p2321, f572

TEMPERATURE DIFFERENTIAL - INTERNAL BYPASS

ATTACH TEMPERATURE C

Next: !p593, !f594

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p599, !f586

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p600, !f601

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p738, !f739

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p752, !f753

OBSERVATION SYSTEM PRESSURE

Next: p786, f2293

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2163, !f789

OBSERVATION PUMP RUNS

Next: p790, f2354

PUMP LIMPET

Next: p797, !f1377

CH OPERATION - FAULT CODE F83

Next: p799, !f800

DHW OPERATION - FAULT CODE F83

Next: !p807, !f2307

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p842, !f843

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p846, !f845

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: p847, !f848

DHW OPERATION - FAULT CODE

Next: !p849, !f850

VOLTAGE FLOW SENSOR DHW - RETURN

{GAINPCBACS}
RUN HOT WATER TAP AT 3 LITRES PER MINUTE

Next: p2103, f94

ADJUST PRIMARY SYSTEM PRESSURE

LOCATE PRIMARY SYSTEM FILLING LOOP

Next: p938, f2287

RESISTANCE HARNESS SENSOR SYSTEM PRESSURE

REMOVE CONNECTOR X2 FROM THE PCB
REMOVE CONNECTOR TO SYSTEM PRESSURE SENSOR

Next: !p936, !f937

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p945, !f946

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1059, !f952

RESISTANCE HARNESS FLOW SENSOR

REMOVE ELECTRICAL CONNECTORS X2 FROM THE PCB AND
TO THE DHW FLOW SENSOR

Next: p2365, !f98

VOLTAGE FAN CONTROL PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM FAN AND MAKE SAFE

Next: p100, f101

System Information

  • Total Tests: 665
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control

XSol Diagnostic System - Generated from extracted test data