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:

REMEHA AVANTA PLUS 35C

GLOBALLY REPLACED

Next: &1, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

INFORMATION CASE REMOVAL

Next: &3, !f2

OBSERVATION DISPLAY ILLUMINATES

Next: &4, ?808, ?810, ?1151

OBSERVATION BOILER SELF CHECK

ENSURE APPLIANCE IS COOL
NO DEMANDS FOR DHW OR CH

Next: &364, ?50, ?584

FUSE INVESTIGATION TREE

OUTSIDE MODEL

Next: &nff, f72

E0 - FLOW OR RETURN SENSOR FAULT

OUTSIDE MODEL

Next: &nff, f10

E1 - FLOW TEMP HIGHER THAN MAX TEMP

OUTSIDE MODEL

Next: &nff, f12

E2 - RETURN TEMP HIGHER THAN FLOW

OUTSIDE MODEL

Next: &nff, f14

E3 - CONTROL UNIT OR EARTH FAULT

OUTSIDE MODEL

Next: &nff, f16

E4 - MORE THAN 4 ATTEMPTS WITHOUT FLAME FORMATION

OUTSIDE MODEL

Next: &nff, !f18

E5 - NO IONISATION OR MORE THAN 5 IONISATION FAILURES

OUTSIDE MODEL

Next: &nff, !f20

E6 - UNWANTED FLAME FORMATION

OUTSIDE MODEL

Next: &nff, f22

E7 - NO WATER OR PUMP NOT WORKING

OUTSIDE MODEL

Next: &nff, !f24

E8 - FAN FAULT

OUTSIDE MODEL

Next: &nff, f26

E9 - NO WATER OR PUMP NOT WORKING

OUTSIDE MODEL

Next: &nff, f28

E10 - NO THROUGH FLOW DURING VENTING CYCLE

OUTSIDE MODEL

Next: &nff, f30

E11 - AIR BOX TEMPERATURE TOO HIGH

OUTSIDE MODEL

Next: &nff, !f32

E13 - HEAT EXCHANGER FUSE BLOWN

OUTSIDE MODEL

Next: &nff, f34

E43 - PARAMETER LIMITS

OUTSIDE MODEL

Next: &nff, f36

E44 - PARAMETER CHECK

OUTSIDE MODEL

Next: &nff, !f38

E45 - DEFAULT PARAMETERS

OUTSIDE MODEL

Next: &nff, !f40

TYPE OF DIAGNOSTIC PROCEDURE

Next: &91, !f79

OBSERVATION DHW FLOW RATE

Next: &1268, f92

OBSERVATION BOILER REACTS TO CH DEMAND

BOILER IN STANDBY ('0' ON DISPLAY)

Next: &110, f444

OPERATION CH

Next: &111, ?511, ?513, ?517

OPERATION DHW

Next: &108, ?544, ?550, ?580, ?582

OBSERVATION BOILER REACTS TO DHW DEMAND

BOILER IN STANDBY ('0' ON DISPLAY)

Next: &109, f451

OBSERVATION PUMP OVERRUN

Next: &913, !f464

OBSERVATION PREHEAT

ENSURE APPLIANCE IS COOL AND THERE IS NO DEMAND FOR DHW OR CH

Next: &78, ?365, ?367, ?1090, ?1301, ?1332

INFORMATION PARAMETER ACCESS

Next: &nff, !f838

COMBUSTION TEST

ATTACH FGA TO COMBUSTION TEST POINT

Next: &nff, f914

OVERHEAT TREE

OUTSIDE MODEL

Next: &nff, f1193

INFORMATION PREVIOUS FAULT CODES

Next: &nff, !f1018

ADDITIONAL TEST IF NO MAGNET FOR FLOW SWITCH

Next: &nff, f1233

INFORMATION SET FLOW TEMPERATURE

Next: &nff, !f1238

INFORMATION SET DHW TEMPERATURE

Next: &nff, !f1240

INFORMATION DISABLE PREHEAT

Next: &107, !f1269

INFORMATION STATUS CODES

Next: &nff, !f1273

INFORMATION PREVIOUS FAULT CODES

Z REDIRECT

Next: End

E13 -2

Z REDIRECT

Next: End

E2 - STUCK IN FAULT

PCB - CONTROL

Next: End

OPERATION CH - TEMPERATURE LOW (RETURN)

SENSOR - TEMPERATURE

Next: End

OBSERVATION PREHEAT - KETTLES

PUMP

Next: End

OBSERVATION PREHEAT - KETTLES

FILTER SYSTEM - PRIMARY FLOW

Next: End

OPERATION DHW - DHW RUNS HOT COLD - FLOW

SENSOR - TEMPERATURE

Next: End

OPERATION DHW - DHW RUNS HOT COLD - RETURN

SENSOR - TEMPERATURE

Next: End

OPERATION DHW - DHW RUNS HOT COLD

PUMP

Next: End

E0 - RETURN

SET - CABLE

Next: End

OBSERVATION DISPLAY ILLUMINATESFAULT CODES

Z REDIRECT

Next: End

OBSERVATION PREHEAT - KETTLES

PLATE HEAT EXCHANGER

Next: End

OVERHEAT INVESTIGATION - FLOW

SENSOR - TEMPERATURE

Next: End

OVERHEAT INVESTIGATION - RETURN

SENSOR - TEMPERATURE

Next: End

OVERHEAT INVESTIGATION

SENSOR FITMENT / WIRING

Next: End

OVERHEAT INVESTIGATION - NO POWER TO PUMP

PCB - CONTROL

Next: End

OVERHEAT INVESTIGATION - INSPECTIONS

PUMP

Next: End

OVERHEAT INVESTIGATION - INSPECTIONS

FILTER SYSTEM - PRIMARY FLOW

Next: End

OVERHEAT INVESTIGATION - INSPECTIONS

PLATE HEAT EXCHANGER

Next: End

OVERHEAT INVESTIGATION - DIFFERENTIALS

PUMP

Next: End

OVERHEAT INVESTIGATION - DIFFERENTIALS

Next: End

ADDITIONAL TEST FLOW SWITCH

FLOW SWITCH ASSEMBLY

Next: End

INFORMATION SET FLOW TEMPERATURE

Z REDIRECT

Next: End

INFORMATION SET DHW TEMPERATURE

Z REDIRECT

Next: End

INFORMATION DISABLE PREHEAT

Z REDIRECT

Next: End

INTERMITTENT IGNITION

INLET PRESSURE

Next: End

INFORMATION STATUS CODES

Z REDIRECT

Next: End

OPERATION PREHEAT - TEMPERATURE LOW

PCB SETTINGS

Next: End

OPERATION DHW - DHW RUNS HOT COLD

FILTER SYSTEM - PRIMARY FLOW

Next: End

OVERHEAT INVESTIGATION - DIFFERENTIALS

FILTER SYSTEM - PRIMARY FLOW

Next: End

OPERATION PREHEAT (WIRED VIA X13)

SET - CABLE

Next: End

OPERATION PREHEAT (WIRED VIA X13)

PCB - CONTROL

Next: End

OPERATION PREHEAT (WIRED VIA X9)

SET - CABLE

Next: End

OPERATION PREHEAT - (WIRED VIA X9)

PCB - CONTROL

Next: End

OPERATION PREHEAT (NO WPS)

PCB - CONTROL

Next: End

OBSERVATION BURNER ESTABLISHES AND PREHEAT - PREHEAT DISABLE 1

Z REDIRECT

Next: End

OBSERVATION PREHEAT

EXTERNAL CONTROLS / INTERNAL TIMER

Next: End

E10 - RUNNING SLOW

PUMP

Next: End

E10

FILTER SYSTEM - PRIMARY FLOW

Next: End

E10

PLATE HEAT EXCHANGER

Next: End

OBSERVATION PREHEAT

FLOW SWITCH ASSEMBLY

Next: End

OBSERVATION PREHEAT - FLOW SWITCH STUCK ON

SET - CABLE

Next: End

OPERATION DHW - DHW COOL RADS COOL

PUMP

Next: End

OPERATION DHW - DHW COOL RADS COOL

FILTER SYSTEM - PRIMARY FLOW

Next: End

OPERATION DHW - DHW COOL RADS COOL

INLET PRESSURE

Next: End

OPERATION DHW - DHW COOL RADS COOL

FLUE

Next: End

OPERATION DHW - DHW COOL RADS COOL

HEAT EXCHANGER

Next: End

OPERATION DHW - DHW COOL RADS COOL

BURNER / GASKET

Next: End

OBSERVATION DISPLAY ILLUMINATES - HARNESS

DISPLAY - PCB

Next: End

E8 - NO VOLTAGE TO FAN

PCB - CONTROL

Next: End

NO DEMAND TO FAN

PCB - CONTROL

Next: End

E8 - 24V FAN

SET - CABLE

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

SIPHON ASSEMBLY C/W HOSE

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

FLUE

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

INLET PRESSURE

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

HEAT EXCHANGER

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

BURNER / GASKET

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

SILENCER - AIR SUPPLY

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

VENTURI

Next: End

E4 DUMMY - GO TO DOES BURNER IGNITE PAGE

Z REDIRECT

Next: End

INFORMATION CASE REMOVAL

Z REDIRECT

Next: End

E5 DUMMY - GO TO DOES BURNER IGNITE PAGE

Z REDIRECT

Next: End

E0 - FLOW

SENSOR - TEMPERATURE

Next: End

E0

PCB - CONTROL

Next: End

E1 - FLOW

SENSOR - TEMPERATURE

Next: End

E1 - STUCK IN FAULT

PCB - CONTROL

Next: End

E2

SENSOR FITMENT / WIRING

Next: End

E2 - RETURN

SENSOR - TEMPERATURE

Next: End

E2 - FLOW

SENSOR - TEMPERATURE

Next: End

E3

Next: End

E3

PCB - CONTROL

Next: End

E6

PCB - CONTROL

Next: End

E13 - NO EXTRA SENSOR

SET - CABLE

Next: End

E13

KIT - SERVICE

Next: End

E7 DUMMY - N/A TO APPLIANCE? GO TO E10

Z REDIRECT

Next: End

E13 - EXTRA SENSOR

SET - CABLE

Next: End

E13 - STUCK IN FAULT

PCB - CONTROL

Next: End

E9 (WIRED VIA X9)

SET - CABLE

Next: End

E9 (WIRED VIA X13)

SET - CABLE

Next: End

E9 (WIRED VIA X13)

PCB - CONTROL

Next: End

E9 - (WIRED VIA X9)

PCB - CONTROL

Next: End

E9 (NO WPS)

PCB - CONTROL

Next: End

E10 (FLOW)

SENSOR - TEMPERATURE

Next: End

E10 (RETURN)

SENSOR - TEMPERATURE

Next: End

E11 DUMMY - N/A TO APPLIANCE? GO TO E6

Z REDIRECT

Next: End

OPERATION PREHEAT - TEMPERATURE LOW (FLOW)

SENSOR - TEMPERATURE

Next: End

OPERATION PREHEAT - TEMPERATURE LOW (RETURN)

SENSOR - TEMPERATURE

Next: End

E44 DUMMY - GO TO E43

Z REDIRECT

Next: End

E45 DUMMY - GO TO E6

Z REDIRECT

Next: End

OBSERVATION BOILER REACTS TO CH DEMAND - NO VOLTAGE TO EXT CONTROLS

PCB - CONTROL

Next: End

OBSERVATION BOILER REACTS TO CH DEMAND - IGNORING DEMAND

PCB - CONTROL

Next: End

OBSERVATION BOILER REACTS TO DHW DEMAND - NO VOLTAGE TO FLOW SWITCH

PCB - CONTROL

Next: End

OBSERVATION BOILER REACTS TO DHW DEMAND

SET - CABLE

Next: End

OBSERVATION BOILER REACTS TO DHW DEMAND

SENSOR - FLOW - DHW

Next: End

OBSERVATION BOILER REACTS TO DHW DEMAND

EXTERNAL CONTROLS / INTERNAL TIMER

Next: End

OBSERVATION PUMP OVERRUN

PCB - CONTROL

Next: End

E10

SENSOR FITMENT / WIRING

Next: End

E43

PCB SETTINGS

Next: End

FUSE INVESTIGATION

PUMP

Next: End

FUSE INVESTIGATION

BLOCK - GAS CONSUMPTION

Next: End

FUSE INVESTIGATION

IGNITION - TRANSFORMER

Next: End

FUSE INVESTIGATION

ACTUATOR - THREE WAY VALVE

Next: End

OPERATION CH

VESSEL - EXPANSION

Next: End

OPERATION CH - TEMPERATURE LOW (FLOW)

SENSOR - TEMPERATURE

Next: End

OPERATION CH - TEMPERATURE LOW

PCB SETTINGS

Next: End

FAULT CODES

Z REDIRECT

Next: End

OPERATION CH - RADS NOT HEATING

VALVE 22MM - FLOW & RETURN

Next: End

OPERATION DHW - TOO HOT (FLOW)

SENSOR - TEMPERATURE

Next: End

OPERATION DHW - TOO HOT

PCB SETTINGS

Next: End

OPERATION DHW - DHW COOL RADS WARM

PCB - CONTROL

Next: End

OPERATION DHW - DHW COOL RADS WARM

SET - CABLE

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

SIPHON ASSEMBLY C/W HOSE

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD - RESISTANCE

BLOCK - GAS CONSUMPTION

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

FLUE

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

BURNER / GASKET

Next: End

BURNER DOES NOT IGNITE SPARKING PRESENT

PCB - CONTROL

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

SILENCER - AIR SUPPLY

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

VENTURI

Next: End

BURNER IGNITES NOISLY OR BAFFLES

SIPHON ASSEMBLY C/W HOSE

Next: End

BURNER IGNITES NOISLY OR BAFFLES

FLUE

Next: End

BURNER IGNITES NOISLY OR BAFFLES

INLET PRESSURE

Next: End

BURNER IGNITES NOISLY OR BAFFLES

HEAT EXCHANGER

Next: End

BURNER IGNITES NOISLY OR BAFFLES

BURNER / GASKET

Next: End

BURNER IGNITES NOISLY OR BAFFLES

SILENCER - AIR SUPPLY

Next: End

BURNER IGNITES NOISLY OR BAFFLES

VENTURI

Next: End

BURNER DOES NOT ESTABLISH

SIPHON ASSEMBLY C/W HOSE

Next: End

BURNER DOES NOT ESTABLISH

FLUE

Next: End

BURNER DOES NOT ESTABLISH

PCB - CONTROL

Next: End

BURNER DOES NOT ESTABLISH

INLET PRESSURE

Next: End

BURNER DOES NOT ESTABLISH - SPARK GENERATOR

SET - CABLE

Next: End

BURNER DOES NOT ESTABLISH

HEAT EXCHANGER

Next: End

BURNER DOES NOT ESTABLISH

ELECTRODE - IGNITION / IONISATION C/W LEAD

Next: End

BURNER DOES NOT ESTABLISH

BURNER / GASKET

Next: End

BURNER DOES NOT ESTABLISH

SILENCER - AIR SUPPLY

Next: End

BURNER DOES NOT ESTABLISH

VENTURI

Next: End

FUSE INVESTIGATION

FAN ASSEMBLY

Next: End

FUSE INVESTIGATION

INNER ASSEMBLY - THREE WAY VALVE

Next: End

INTERMITTENT IGNITION

SIPHON ASSEMBLY C/W HOSE

Next: End

INTERMITTENT IGNITION

FLUE

Next: End

INTERMITTENT IGNITION RECTIFICATION VOLTAGE

PCB - CONTROL

Next: End

INTERMITTENT IGNITION - SPARK GENERATOR DAMAGED

SET - CABLE

Next: End

INTERMITTENT IGNITION

HEAT EXCHANGER

Next: End

INTERMITTENT IGNITION

ELECTRODE - IGNITION / IONISATION C/W LEAD

Next: End

INTERMITTENT IGNITION

BURNER / GASKET

Next: End

INTERMITTENT IGNITION

SILENCER - AIR SUPPLY

Next: End

INTERMITTENT IGNITION

VENTURI

Next: End

INTERMITTENT IGNITION - RESISTANCE

BLOCK - GAS CONSUMPTION

Next: End

BURNER DOES NOT IGNITE NO SPARKING

PCB - CONTROL

Next: End

BURNER DOES NOT IGNITE NO SPARKING - SPARK GENERATOR

SET - CABLE

Next: End

INTERMITTENT IGNITION NO SPARKING

PCB - CONTROL

Next: End

INTERMITTENT IGNITION - SPARK GENERATOR O/C

SET - CABLE

Next: End

E10 - NO POWER TO PUMP

PCB - CONTROL

Next: End

TYPE OF DIAGNOSTIC PROCEDURE

Z REDIRECT

Next: End

OPERATION CH - RADS NOT HEATING - NO VOLTAGE TO DIVERTER

PCB - CONTROL

Next: End

OPERATION CH - RADS NOT HEATING - DIVERTER

SET - CABLE

Next: End

OPERATION CH - RADS NOT HEATING

INNER ASSEMBLY - THREE WAY VALVE

Next: End

OBSERVATION DISPLAY ILLUMINATES

FUSE MAINS

Next: End

OBSERVATION DISPLAY ILLUMINATES

FUSE 2A GLASS

Next: End

OBSERVATION DISPLAY ILLUMINATES

PCB - CONTROL

Next: End

OBSERVATION DISPLAY ILLUMINATES - F FLASHING - FAN

SET - CABLE

Next: End

OBSERVATION DISPLAY ILLUMINATES - NO SELF CHECK

PCB - CONTROL

Next: End

OBSERVATION DISPLAY ILLUMINATES - NO DISPLAY - FAN

SET - CABLE

Next: End

INFORMATION PARAMETER ACCESS

Z REDIRECT

Next: End

DHW COOL RADS COOL

EXTERNAL MIXING

Next: End

OPERATION DHW - DHW COOL RADS COOL - FLOW

SENSOR - TEMPERATURE

Next: End

OPERATION DHW - DHW COOL RADS COOL - RETURN

SENSOR - TEMPERATURE

Next: End

OPERATION DHW - DHW COOL RADS COOL

SIPHON ASSEMBLY C/W HOSE

Next: End

COMBUSTION TEST

SIPHON ASSEMBLY C/W HOSE

Next: End

COMBUSTION TEST

FLUE

Next: End

COMBUSTION TEST

INLET PRESSURE

Next: End

COMBUSTION TEST

HEAT EXCHANGER

Next: End

COMBUSTION TEST

BURNER / GASKET

Next: End

COMBUSTION TEST

SILENCER - AIR SUPPLY

Next: End

COMBUSTION TEST

VENTURI

Next: End

OBSERVATION PREHEAT - DHW COOL RADS WARM

PCB - CONTROL

Next: End

OBSERVATION PREHEAT - DHW COOL RADS WARM

SET - CABLE

Next: End

OBSERVATION DHW FLOW RATE

WATER SUPPLY

Next: End

OBSERVATION PREHEAT - ON NO DEMAND

EXTERNAL CONTROLS / INTERNAL TIMER

Next: End

OBSERVATION DHW FLOW RATE

VALVE 15MM - MAIN COLD WATER

Next: End

OBSERVATION DHW FLOW RATE

FLOW SWITCH ASSEMBLY

Next: End

E13 - 1

Z REDIRECT

Next: End

E2

Z REDIRECT

Next: End

OPERATION CH - TEMPERATURE LOW

PCB - CONTROL

Next: End

OBSERVATION PREHEAT - KETTLES

SYSTEM PRESSURE

Next: End

OBSERVATION PREHEAT - KETTLES

PRESSURE GAUGE

Next: End

OPERATION DHW - RUNS HOT COLD

SYSTEM PRESSURE

Next: End

OPERATION DHW - DHW RUNS HOT COLD

PRESSURE GAUGE

Next: End

OPERATION DHW - DHW RUNS HOT COLD

PCB - CONTROL

Next: End

OPERATION DHW - DHW RUNS HOT COLD

HEAT EXCHANGER (WATERWAYS)

Next: End

E0 - RETURN

SENSOR - TEMPERATURE

Next: End

OBSERVATION DISPLAY ILLUMINATESFAULT CODES 2

Z REDIRECT

Next: End

OBSERVATION PREHEAT - KETTLES

HEAT EXCHANGER (WATERWAYS)

Next: End

OVERHEAT INVESTIGATION

PRESSURE GAUGE

Next: End

OVERHEAT INVESTIGATION

SYSTEM PRESSURE

Next: End

OVERHEAT INVESTIGATION - NOT RUNNING

PUMP

Next: End

OVERHEAT INVESTIGATION - INSPECTIONS

HEAT EXCHANGER (WATERWAYS)

Next: End

OVERHEAT INVESTIGATION - DIFFERENTIALS

HEAT EXCHANGER (WATERWAYS)

Next: End

OVERHEAT INVESTIGATION - DIFFERENTIALS

NO FAULT OVERHEAT

Next: End

ADDITIONAL TEST FLOW SWITCH

SENSOR - FLOW - DHW

Next: End

OBSERVATION DISPLAY ILLUMINATES

DISPLAY - PCB

Next: End

OPERATION DHW - DHW RUNS HOT COLD

PLATE HEAT EXCHANGER

Next: End

OVERHEAT INVESTIGATION - DIFFERENTIALS

PLATE HEAT EXCHANGER

Next: End

OPERATION PREHEAT

SYSTEM PRESSURE

Next: End

OPERATION PREHEAT

PRESSURE GAUGE

Next: End

OPERATION PREHEAT (WIRED VIA X13)

PRESSURE SWITCH

Next: End

OPERATION PREHEAT (WIRED VIA X13)

RESET AFTER E9

Next: End

OPERATION PREHEAT (WIRED VIA X9)

PRESSURE SWITCH

Next: End

OPERATION PREHEAT (WIRED VIA X9)

RESET AFTER E9

Next: End

OPERATION PREHEAT (NO WPS)

RESET AFTER E9

Next: End

OBSERVATION PREHEAT - NOT FIRING

PCB - CONTROL

Next: End

OBSERVATION PREHEAT - IGNORING DEMAND

PCB - CONTROL

Next: End

E10

HEAT EXCHANGER (WATERWAYS)

Next: End

OBSERVATION PREHEAT

OPEN TAP OR WATER LEAK

Next: End

OBSERVATION PREHEAT

SENSOR - FLOW - DHW

Next: End

OPERATION DHW - DHW COOL RADS COOL

HEAT EXCHANGER (WATERWAYS)

Next: End

OPERATION DHW - DHW COOL RADS COOL

PLATE HEAT EXCHANGER

Next: End

OPERATION DHW - DHW COOL RADS COOL

PCB - CONTROL

Next: End

OPERATION DHW - DHW COOL RADS COOL GAS RATE LOW

PCB - CONTROL

Next: End

OBSERVATION DISPLAY ILLUMINATES - SELF CHECK STARTS

PCB - CONTROL

Next: End

NO FAULT INTERMITTENT IGNITION

NO FAULT INTERMITTENT IGNITION

Next: End

E8

FAN ASSEMBLY

Next: End

COMBUSTION TEST INTERMITTENT INVESTIGATION

BLOCK - GAS CONSUMPTION

Next: End

E0 - FLOW

SET - CABLE

Next: End

E0

Z REDIRECT

Next: End

E1

Z REDIRECT

Next: End

E3

Z REDIRECT

Next: End

E6

Z REDIRECT

Next: End

E13 - NO EXTRA SENSOR

HEAT EXCHANGER (FUSE)

Next: End

E13 - EXTRA SENSOR

HEAT EXCHANGER (FUSE)

Next: End

E9

SYSTEM PRESSURE

Next: End

E9 (WIRED VIA X9)

PRESSURE SWITCH

Next: End

E9 (WIRED VIA X13)

PRESSURE SWITCH

Next: End

E9 (WIRED VIA X9)

RESET AFTER E9

Next: End

E9 (NO WPS)

RESET AFTER E9

Next: End

E10

SYSTEM PRESSURE

Next: End

E10

PRESSURE GAUGE

Next: End

E9 (WIRED VIA X13)

RESET AFTER E9

Next: End

OPERATION PREHEAT - TEMPERATURE LOW

PCB - CONTROL

Next: End

OBSERVATION BOILER REACTS TO CH DEMAND

EXTERNAL CONTROLS / INTERNAL TIMER

Next: End

OBSERVATION BOILER REACTS TO CH DEMAND

LOW VOLTAGE CONTROLS

Next: End

OBSERVATION BOILER REACTS TO DHW DEMAND

FLOW SWITCH ASSEMBLY

Next: End

OBSERVATION BOILER REACTS TO DHW DEMAND - IGNORING DEMAND

PCB - CONTROL

Next: End

E43

PCB - CONTROL

Next: End

FUSE INVESTIGATION - GAS VALVE

SET - CABLE

Next: End

FUSE INVESTIGATION

PCB - CONTROL (FUSE INVESTIGATION)

Next: End

FUSE INVESTIGATION - SPARK GENERATOR

SET - CABLE

Next: End

FUSE INVESTIGATION - DIVERTER VALVE

SET - CABLE

Next: End

OPERATION CH

PIPE - PUMP TO EXPANSION VESSEL

Next: End

FAULT CODES 2

Z REDIRECT

Next: End

OPERATION DHW - TOO HOT

PCB - CONTROL

Next: End

OPERATION DHW - DHW COOL RADS WARM

INNER ASSEMBLY - THREE WAY VALVE

Next: End

OPERATION DHW - DHW COOL RADS WARM

ACTUATOR - THREE WAY VALVE

Next: End

BURNER DOES NOT IGNITE NO SPARKING

ELECTRODE - IGNITION / IONISATION C/W LEAD

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD - GAS VALVE

SET - CABLE

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

FAN ASSEMBLY

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD

INLET PRESSURE

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD - NOT OPENING

BLOCK - GAS CONSUMPTION

Next: End

BURNER DOES NOT IGNITE SPARKING HEARD - NOT OPENING FULLY

BLOCK - GAS CONSUMPTION

Next: End

BURNER IGNITES NOISLY OR BAFFLES

BLOCK - GAS CONSUMPTION

Next: End

BURNER DOES NOT ESTABLISH

IGNITION - TRANSFORMER

Next: End

FUSE INVESTIGATION - FAN

SET - CABLE

Next: End

INTERMITTENT IGNITION - GAS VALVE

SET - CABLE

Next: End

OBSERVATION PREHEAT - DHW COOL RADS WARM

INNER ASSEMBLY - THREE WAY VALVE

Next: End

BURNER DOES NOT IGNITE NO SPARKING

IGNITION - TRANSFORMER

Next: End

INTERMITTENT IGNITION NO SPARKING

IGNITION - TRANSFORMER

Next: End

E10 - NOT RUNNING

PUMP

Next: End

OPERATION CH - RADS NOT HEATING

ACTUATOR - THREE WAY VALVE

Next: End

OPERATION CH - RADS NOT HEATING

Next: End

OBSERVATION DISPLAY ILLUMINATES

Next: End

FUSE INVESTIGATION - MAINS

Z REDIRECT

Next: End

FUSE INVESTIGATION - PCB FUSE

Z REDIRECT

Next: End

OBSERVATION DISPLAY ILLUMINATES

FAN ASSEMBLY

Next: End

OBSERVATION DISPLAY ILLUMINATES - NO DISPLAY

FAN ASSEMBLY

Next: End

E9

PRESSURE GAUGE

Next: End

OPERATION DHW - DHW COOL RADS COOL

PRESSURE GAUGE

Next: End

OPERATION DHW - DHW COOL RADS COOL

SYSTEM PRESSURE

Next: End

COMBUSTION TEST

BLOCK - GAS CONSUMPTION

Next: End

OBSERVATION PREHEAT - DHW COOL RADS WARM

ACTUATOR - THREE WAY VALVE

Next: End

OPERATION PREHEAT - RADS HEAT - STUCK ON CH

PCB - CONTROL

Next: End

OBSERVATION DHW FLOW RATE

PLATE HEAT EXCHANGER

Next: End

BOILER KETTLING OR NOISY

CHARACTERISTIC TEST FROM OBSERVATION PREHEAT

Next: p1092

WATER PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1103

PRESSURE OK ON GAUGE BUT DOES NOT INCREASE WHEN WATER ADDED

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1105

WATER PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1108

PRESSURE OK ON GAUGE BUT DOES NOT INCREASE WHEN WATER ADDED

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1110

BOILER SHOWS FAULT CODE

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY ILLUMINATES

Next: p1152

PRESSURE OK ON GAUGE BUT DOES NOT INCREASE WHEN WATER ADDED

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1203

WATER PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1205

BOILER DOES NOT REFIRE FOR PREHEAT

CHARACTERISTIC TEST FROM OBSERVATION PREHEAT

Next: p1302

WATER PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1306

PRESSURE OK ON GAUGE BUT DOES NOT INCREASE WHEN WATER ADDED

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p1308

WATER PRESSURE SWITCH WIRED VIA X9

CHARACTERISTIC TEST FROM OBSERVATION WATER PRESSURE SWITCH

Next: p1311

WATER PRESSURE SWITCH WIRED VIA X13

CHARACTERISTIC TEST FROM OBSERVATION WATER PRESSURE SWITCH

Next: p1313

BOILER COMPLETES PREHEAT AS ABOVE BUT FAN CONTINUES TO RUN

CHARACTERISTIC TEST FROM OBSERVATION PREHEAT

Next: p1336

WATER PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p269

WATER PRESSURE SWITCH WIRED VIA X9

CHARACTERISTIC TEST FROM OBSERVATION WATER PRESSURE SWITCH

Next: p272

WATER PRESSURE SWITCH WIRED VIA X13

CHARACTERISTIC TEST FROM OBSERVATION WATER PRESSURE SWITCH

Next: p274

PRESSURE OK ON GAUGE BUT DOES NOT INCREASE WHEN WATER ADDED

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p296

WATER PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p295

PREHEAT RUNS BUT SHUTS DOWN AT INCORRECT TEMPERATURE

CHARACTERISTIC TEST FROM OBSERVATION PREHEAT

Next: p1274

PREHEAT UNABLE TO COMPLETE BECAUSE RADS BEGIN TO HEAT

CHARACTERISTIC TEST FROM OBSERVATION PREHEAT

Next: p573

BOILER SHOWS FAULT CODE OTHER THAN E4 / E5 AT ANY POINT DURING SELF CHECK

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p52

BOILER REACHES TEMPERATURE BUT RADIATORS NOT HEATING PROPERLY

CHARACTERISTIC TEST FROM OPERATION CH

Next: p512

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p514

BOILER AND RADIATOR TEMPERATURE LOW

CHARACTERISTIC TEST FROM OPERATION CH

Next: p519

DHW TOO HOT

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p545

DHW COOL, RADS BEGIN TO HEAT

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p561

DHW RUNS HOT COLD

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p581

DHW COOL, RADIATORS REMAIN COLD

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p853

NO IGNITION / POOR OR INTERMITTENT IGNITION / FAULT CODE E4 OR E5 SHOWN

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p585

BURNER DOES NOT IGNITE, NO SPARKING HEARD

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p590

BURNER DOES NOT IGNITE, SPARKING HEARD

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p600

INLET PRESSURE DROPS BELOW 18MB (NG) OR 37MB (LPG)

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: !p618

INLET PRESSURE DOES NOT DROP DURING SPARKING

CHARACTERISTIC TEST FROM PRESSURE GAS INLET AND DROP

Next: p620

BURNER IGNITES NOISILY OR BAFFLES OUT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p628

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p663

DISPLAY IS BLANK

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY ILLUMINATES

Next: p812

DISPLAY FLASHES F ONLY

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY ILLUMINATES

Next: p811

PRESSURE OK ON GAUGE BUT DOES NOT INCREASE WHEN WATER ADDED

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p870

PRESSURE OK ON GAUGE BUT DOES NOT INCREASE WHEN WATER ADDED

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p872

WATER PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE

Next: !p874

DIVERTER VALVE DOES NOT MOVE DURING SELF CHECK

CHARACTERISTIC TEST FROM OBSERVATION DIVERTER VALVE MOVEMENT DHW

Next: p933

DIVERTER VALVE DOES NOT FINISH IN EXTENDED POSITION

CHARACTERISTIC TEST FROM OBSERVATION DIVERTER VALVE MOVEMENT DHW

Next: p932

10/12/2019 10:51:47 1911_1_50_1 06/01/2020 14:29:51

11/12/2019 11:20:45

Next: End

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p203, f204

TEMPERATURE DIFFERENTIAL CH

Next: p1293, f1140

INSPECTION PUMP

Next: !p1141, !f1142

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1194, !f1195

RESISTANCE SENSOR FLOW

DISCONNECT PLUG FROM FLOW SENSOR

Next: p215, !f214

VOLTAGE PUMP AT PCB

{GAINPCBACS}
DISCONNECT PLUG FROM FLOW THERMISTOR

Next: !p1208, !f1209

INSPECTION PUMP

Next: p1212, !f1213

TEMPERATURE DIFFERENTIAL CH

Next: p1298, f1221

INSPECTION PUMP

Next: !p1222, !f1223

INSPECTION FLOW SWITCH ASSEMBLY

ISOLATE MAINS WATER

Next: !p1236, !f1235

RESISTANCE HARNESS WATER PRESSURE SWITCH (X13)

DISCONNECT PLUG FROM FLOW SWITCH
DISCONNECT X13 FROM THE PCB

Next: !p1316, !f1317

RESISTANCE HARNESS WATER PRESSURE SWITCH (X9)

DISCONNECT PLUG FROM FLOW SWITCH
DISCONNECT X9 FROM THE PCB

Next: !p1322, !f1323

INFORMATION ENABLE PREHEAT

Next: p1329, !f1330

VOLTAGE FLOW SWITCH TO PCB (FLOW SWITCH OFF)

REMOVE FLOW SWITCH FROM APPLIANCE BUT LEAVE CONNECTED ELECTRICALLY

Next: p1369, f1372

RESISTANCE HARNESS FLOW SWITCH

DISCONNECT PLUG FROM FLOW SWITCH
DISCONNECT X13 FROM THE PCB

Next: !p1373, !f1374

TEMPERATURE DIFFERENTIAL CH

Next: p1378, f1379

INSPECTION PUMP

Next: !p1380, !f1381

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET TEST POINT

Next: p1386, !f1387

RESISTANCE HARNESS DISPLAY PCB

REMOVE DISPLAY PCB HARNESS FROM APPLIANCE

Next: !p1395, !f1396

INSPECTION SENSORS WIRED AND FITTED CORRECTLY

Next: p221, !f220

INSPECTION CONDENSATE

Next: p1440, !f1441

SOCKET AND SEE TEST

{GAINPCBACS}

Next: p227, !f226

RESISTANCE SENSOR FLOW

DISCONNECT PLUG FROM FLOW SENSOR

Next: !p205, !f206

RESISTANCE HARNESS RETURN SENSOR

DISCONNECT PLUG FROM RETURN SENSOR
DISCONNECT X13 FROM THE PCB

Next: !p1147, !f1148

OBSERVATION BOILER RESET

Next: !p230, !f231

OBSERVATION IS ADDITIONAL POC SENSOR FITTED

Next: p238, f235

RESISTANCE HARNESS HEAT EXCHANGER FUSE

{GAINPCBACS}
DISC

Next: !p237, !f236

VOLTAGE FAN PERMANENT AT PCB

{GAINPCBACS}
REMOVE FAN CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p1402, !f1400

RESISTANCE HARNESS WATER PRESSURE SWITCH (X9)

DISCONNECT PLUG FROM FLOW SWITCH
DISCONNECT X9 FROM THE PCB

Next: !p276, !f277

INSPECTION SYSTEM PRESSURE

Next: p265, ?268, ?869

RESISTANCE HARNESS WATER PRESSURE SWITCH (X13)

DISCONNECT PLUG FROM FLOW SWITCH
DISCONNECT X13 FROM THE PCB

Next: !p282, !f283

INSPECTION SYSTEM PRESSURE

Next: p291, ?292, ?294

RESISTANCE HEAT EXCHANGER FUSE AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p243, f234

INFORMATION SET DF & DU

Next: !p474, !f475

VOLTAGE EXTERNAL CONTROLS CH INTO BOILER

{GAINPCBACS}

Next: p448, f445

VOLTAGE EXTERNAL CONTROLS CH SUPPLY

Next: !p447, !f446

VOLTAGE FLOW SWITCH TO PCB

Next: p459, f452

VOLTAGE FLOW SWITCH SUPPLY

Next: p454, !f453

RESISTANCE FAN

DISCONNECT PLUG FROM FAN

Next: !p684, !f685

RESISTANCE GAS VALVE (FUSE INV)

DISCONNECT PLUG FROM GAS VALVE
(LOOSEN SCREW HOLDING SPARK GENERATOR)

Next: !p484, !f485

RESISTANCE SPARK GENERATOR

REMOVE SPARK GENERATOR FROM APPLIANCE

Next: !p489, !f491

RESISTANCE DIVERTER VALVE

UNCLIP AND DISCONNEC

Next: !p507, !f508

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}

Next: p564, !f565

RESISTANCE GAS VALVE

DISCONNECT PLUG FROM GAS VALVE
(LOOSEN SCREW HOLDING SPARK GENERATOR)

Next: !p605, !f606

INSPECTION FLUE

Next: p609, !f610

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}
DISCONNECT X4 FROM THE PCB

Next: p686, !f477

RESISTANCE GAS VALVE

DISCONNECT PLUG FROM GAS VALVE
(LOOSEN SCREW HOLDING SPARK GENERATOR)

Next: !p749, !f750

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}
DISC

Next: p764, !f763

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}
DISC

Next: p782, !f783

VOLTAGE PUMP AT PCB

{GAINPCBACS}
DISCONNECT PLUG FROM FLOW THERMISTOR

Next: !p787, !f788

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}

Next: p798, !f799

VOLTAGE MAINS IN AT PCB

{GAINPCBACS}

Next: p815, f816

RESISTANCE FUSE MAINS

REMOVE THE FUSE FROM THE FUSED SPUR

Next: !p817, f818

FUSE FURTHER INVESTIGATION

Next: !p819, !f820

FUSE FURTHER INVESTIGATION

Next: !p823, !f824

INSPECTION CONDENSATE

Next: p915, !f916

OBSERVATION COLD WATER SUPPLY

Next: p93, !f94

OBSERVATION BOILER RESET (E2)

ENSURE BOILER IS COOL

Next: !p1087, !f1086

INSPECTION SYSTEM PRESSURE

Next: p1093, ?1102, ?1104

INSPECTION PUMP

Next: p1094, !f1095

INSPECTION CH FILTER

DRAIN BOILER PRIMARY CIRCUIT

Next: p1161, !f1097

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1112, !f1113

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1136, !f1115

TEMPERATURE DIFFERENTIAL DHW

Next: !p1137, f1138

FAULT CODES


FAULT CODES

Next: !p1153, !f1154

INSPECTION PLATE HEAT EXCHANGER

DRAIN BOILER PRIMARY

Next: !p1162, !f1163

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1196, !f1197

INSPECTION SENSORS WIRED AND FITTED CORRECTLY

Next: p1198, !f1199

INSPECTION SYSTEM PRESSURE

Next: p1200, ?1202, ?1204

OBSERVATION PUMP RUNS

Next: p1206, f1207

TYPE OF OVERHEAT INVESTIGATION

Next: p1210, f1211

TEMPERATURE DIFFERENTIAL DHW

Next: p1218, f1219

INSPECTION CH FILTER

DRAIN BOILER PRIMARY CIRCUIT

Next: p1214, !f1215

INSPECTION PLATE HEAT EXCHANGER

DRAIN BOILER PRIMARY

Next: !p1216, !f1217

TEMPERATURE DIFFERENTIAL CH

Next: !p1226, !f1227

OBSERVATION SET TEMPERATURE (DHW)

Next: p366, !f1282

VOLTAGE MAIN PCB TO DISPLAY PCB

REMOVE 4X SCREWS SEC

Next: !p1286, f1394

INSPECTION CH FILTER

DRAIN BOILER PRIMARY CIRCUIT

Next: !p1294, !f1295

INSPECTION CH FILTER

DRAIN BOILER PRIMARY CIRCUIT

Next: !p1299, !f1300

OBSERVATION WHICH STATUS IS SHOWN

Next: p1303, f1328

INSPECTION SYSTEM PRESSURE

Next: p1304, ?1305, ?1307

OBSERVATION WATER PRESSURE SWITCH

{GAINPCBACS}

Next: p1309, ?1310, ?1312

OBSERVATION BOILER RESET (E9)

Next: !p1326, !f1327

RESISTANCE WATER PRESSURE SWITCH AND HARNESS (X9)

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1320, f1321

RESISTANCE WATER PRESSURE SWITCH AND HARNESS (X13)

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1314, f1315

OBSERVATION BOILER RESET (E9)

Next: !p1318, !f1319

OBSERVATION BOILER RESET (E9)

Next: !p1324, !f1325

VOLTAGE EXTERNAL CONTROLS DHW INTO BOILER

{GAINPCBACS}
ANY DHW CONTROLS TURNED ON

Next: !p1334, !f1335

VOLTAGE FLOW SWITCH TO PCB (NO DEMAND)

ENSURE NO DEMANDS

Next: !p1355, f1363

INSPECTION PUMP

Next: p1357, !f1358

INSPECTION CH FILTER

DRAIN BOILER PRIMARY CIRCUIT

Next: p1359, !f1360

INSPECTION PLATE HEAT EXCHANGER

DRAIN BOILER PRIMARY

Next: !p1361, !f1362

VOLTAGE FLOW SWITCH TO PCB (DHW ISOLATED)

ISOLATE DHW VALVE UN

Next: !p1370, !f1371

TEMPERATURE DIFFERENTIAL DHW

Next: p1376, f1377

GAS RATE

Next: !p1384, f1385

INSPECTION CH FILTER

DRAIN BOILER PRIMARY CIRCUIT

Next: !p1382, !f1383

INSPECTION FLUE

Next: p1388, !f1389

INSPECTION HEAT EXCHANGER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p1390, !f1391

INSPECTION BURNER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: !p1392, !f1393

VOLTAGE DC DEMAND TO FAN

{GAINPCBACS}
REMOVE FAN CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p1403, !f1404

RESISTANCE HARNESS FAN (24V)

DISCONNECT LOW VOLTAGE PLUG FROM FAN
DISCONNECT CONNECTOR X8 FROM THE PCB

Next: !p1405, !f1406

COMBUSTION TEST

ATTACH FGA TO COMBUSTION TEST POINT

Next: p705, f1439

INSPECTION FLUE

Next: p1442, !f1443

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET TEST POINT

Next: p1444, !f1445

INSPECTION HEAT EXCHANGER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p1446, !f1447

INSPECTION BURNER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p1448, !f1449

INSPECTION AIR INTAKE

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p1450, !f1451

INSPECTION VENTURI

REMOVE FAN & BURNER ASSEMBLY
REMOVE AIR INTAKE FROM FAN & BURNER ASSEMBLY

Next: !p1452, !f1453

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p211, f208

OBSERVATION BOILER RESET

Next: !p212, !f213

OBSERVATION BOILER RESET (E1)

ENSURE BOILER IS COOL

Next: !p219, !f216

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p223, !f222

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1085, !f225

OBSERVATION BOILER RESET

Next: !p228, !f229

RESISTANCE POC SENSOR

DISCONNECT BOTH LEADS RUNNING FROM THE POC SENSOR

Next: p240, !f239

RESISTANCE HARNESS HEAT EXCHANGER FUSE

{GAINPCBACS}
DISC

Next: !p241, !f242

OBSERVATION BOILER RESET (E13)

Next: p245, !f244

TYPE OF DIAGNOSTICS (E13)

Next: !p1019, !f1020

OBSERVATION WATER PRESSURE SWITCH

{GAINPCBACS}

Next: p270, ?271, ?273

OBSERVATION BOILER RESET (E9)

Next: !p289, !f290

RESISTANCE WATER PRESSURE SWITCH AND HARNESS (X9)

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p284, f275

RESISTANCE WATER PRESSURE SWITCH AND HARNESS (X13)

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p280, f281

OBSERVATION BOILER RESET (E9)

Next: !p298, !f286

OBSERVATION BOILER RESET (E9)

Next: !p287, !f288

OBSERVATION PUMP RUNS

Next: p465, f786

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p302, !f303

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1356, !f305

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p373, !f374

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: !p375, !f376

OBSERVATION LINK LOW VOLTAGE CONTROLS (CH)

REMOVE TWO WIRES AT

Next: !p450, !f449

RESISTANCE HARNESS FLOW SWITCH

DISCONNECT PLUG FROM FLOW SWITCH
DISCONNECT X13 FROM THE PCB

Next: p456, !f455

OBSERVATION BOILER REACTS TO DHW WITH FLOW SWITCH MADE

UNCLIP THE FLOW SWIT

Next: !p457, !f458

VOLTAGE EXTERNAL CONTROLS DHW INTO BOILER

{GAINPCBACS}
ANY DHW CONTROLS TURNED ON

Next: !p461, !f460

INSPECTION SENSORS WIRED AND FITTED CORRECTLY

Next: p301, !f473

RESISTANCE FAN AND HARNESS

DISCONNECT CONNECTOR X8 FROM THE PCB

Next: p482, f479

RESISTANCE GAS VALVE AND HARNESS (FUSE INV)

{GAINPCBACS}
DISCONNECT CONNECTOR X1 FROM THE PCB

Next: p486, f483

RESISTANCE SPARK GENERATOR AND HARNESS

DISCONNECT CONNECTOR X1 FROM THE PCB

Next: !p487, f488

RESISTANCE DIVERTER VALVE AND HARNESS

DISCONNECT CONNECTOR X5 FROM THE PCB

Next: p478, f506

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p795, !f533

PRESSURE EXPANSION VESSEL

DRAIN BOILER PRIMARY CIRCUIT

Next: !p515, !f516

OBSERVATION SET TEMPERATURE

Next: p520, !f529

FAULT CODES


FAULT CODES

Next: !p54, !f53

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p522, !f528

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: !p1088, !f1089

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p546, !f547

OBSERVATION SET TEMPERATURE (DHW)

Next: !p548, !f549

OBSERVATION DIVERTER VALVE MOVEMENT

UNCLIP AND REMOVE DI

Next: !p562, f563

RESISTANCE HARNESS DIVERTER VALVE

DISCONNECT X5 FROM THE PCB
DISCONNECT PLUG FROM DIVERTER VALVE

Next: !p566, !f567

OBSERVATION DIVERTER VALVE MOVEMENT DHW

UNCLIP AND REMOVE DI

Next: !p751, ?929, ?931

INSPECTION SYSTEM PRESSURE

Next: p1111, ?1107, ?1109

OBSERVATION EXTERNAL MIXING

Next: p840, !f839

OBSERVATION BURNER IGNITES AND ESTABLISHES

ENSURE APPLIANCE IS COOL
NO DEMANDS FOR DHW OR CH

Next: p1407, ?589, ?599, ?627, ?662

OBSERVATION SPARKING AT SPARK GENERATOR

DISCONNECT IGNITION

Next: !p591, f761

INSPECTION CONDENSATE

Next: p601, !f602

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X1 FROM THE PCB

Next: p603, f604

PRESSURE FAN ON STARTUP

1. DISCONNECT

Next: p607, f608

PRESSURE GAS INLET AND DROP

ATTACH U-GAUGE TO GAS INLET TEST POINT

Next: p615, ?617, ?619

INSPECTION HEAT EXCHANGER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p611, !f612

INSPECTION BURNER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: !p613, !f614

INSPECTION AIR INTAKE

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p623, !f624

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: !p621, !f622

INSPECTION VENTURI

REMOVE FAN & BURNER ASSEMBLY
REMOVE AIR INTAKE FROM FAN & BURNER ASSEMBLY

Next: !p625, !f626

INSPECTION CONDENSATE

Next: p629, !f630

INSPECTION FLUE

Next: p631, !f632

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET TEST POINT

Next: p633, !f634

INSPECTION HEAT EXCHANGER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p635, !f636

INSPECTION BURNER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p637, !f638

INSPECTION AIR INTAKE

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p639, !f640

INSPECTION VENTURI

REMOVE FAN & BURNER ASSEMBLY
REMOVE AIR INTAKE FROM FAN & BURNER ASSEMBLY

Next: !p641, !f642

INSPECTION CONDENSATE

Next: p664, !f665

INSPECTION FLUE

Next: p666, !f667

VOLTAGE RECTIFICATION DURING SELF CHECK

{GAINPCBACS}

Next: p668, !f669

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET TEST POINT

Next: p670, !f671

RESISTANCE HARNESS SPARK GENERATOR

DISCONNECT X1 FROM T

Next: p672, !f673

INSPECTION HEAT EXCHANGER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p674, !f675

RESISTANCE SPARK ELECTRODE

REMOVE FAN & BURNER ASSEMBLY

Next: p676, !f677

INSPECTION BURNER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p678, !f679

INSPECTION AIR INTAKE

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p680, !f681

INSPECTION VENTURI

REMOVE FAN & BURNER ASSEMBLY
REMOVE AIR INTAKE FROM FAN & BURNER ASSEMBLY

Next: !p682, !f683

INSPECTION DIVERTER VALVE SPINDLE

UNCLIP AND REMOVE DIVERTER MOTOR FROM SPINDLE

Next: p492, !f704

INSPECTION CONDENSATE

Next: p726, !f707

INSPECTION FLUE

Next: p708, !f709

VOLTAGE RECTIFICATION DURING SELF CHECK

{GAINPCBACS}

Next: p710, !f711

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET TEST POINT

Next: p767, !f1271

RESISTANCE HARNESS SPARK GENERATOR

DISCONNECT X1 FROM T

Next: p714, !f715

INSPECTION HEAT EXCHANGER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p716, !f717

RESISTANCE SPARK ELECTRODE

REMOVE FAN & BURNER ASSEMBLY

Next: p718, !f719

INSPECTION BURNER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p720, !f721

INSPECTION AIR INTAKE

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p722, !f723

INSPECTION VENTURI

REMOVE FAN & BURNER ASSEMBLY
REMOVE AIR INTAKE FROM FAN & BURNER ASSEMBLY

Next: !p1398, !f725

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
DISCONNECT CONNECTOR X1 FROM THE PCB

Next: p706, f748

RESISTANCE HARNESS SPARK GENERATOR

DISCONNECT X1 FROM T

Next: !p765, !f766

OBSERVATION SPARKING AT SPARK GENERATOR

DISCONNECT IGNITION

Next: p712, f781

RESISTANCE HARNESS SPARK GENERATOR

DISCONNECT X1 FROM T

Next: !p784, !f785

OBSERVATION DIVERTER VALVE MOVEMENT

UNCLIP AND REMOVE DI

Next: p796, f797

INSPECTION DIVERTER VALVE SPINDLE

UNCLIP AND REMOVE DIVERTER MOTOR FROM SPINDLE

Next: !p802, !f803

RESISTANCE HARNESS DIVERTER VALVE

DISCONNECT X5 FROM THE PCB
DISCONNECT PLUG FROM DIVERTER VALVE

Next: !p800, !f801

OBSERVATION DISCONNECT X8

{GAINPCBACS}
DISCONNECT X8 FROM THE PCB

Next: p828, !f827

OBSERVATION PUMP RUNS (NO DISPLAY)

Next: p1283, f814

RESISTANCE FUSE (PCB)

REMOVE FUSE FROM HOLDER (NEXT TO X6 ON PCB)

Next: p831, f822

RESISTANCE HARNESS FAN (24V)

DISCONNECT LOW VOLTAGE PLUG FROM FAN
DISCONNECT CONNECTOR X8 FROM THE PCB

Next: !p829, !f830

OBSERVATION DISCONNECT X8 (NO DISPLAY)

{GAINPCBACS}
DISCONNECT X8 FROM THE PCB

Next: p834, !f833

RESISTANCE HARNESS FAN (24V)

DISCONNECT LOW VOLTAGE PLUG FROM FAN
DISCONNECT CONNECTOR X8 FROM THE PCB

Next: !p835, !f836

RESISTANCE SENSOR FLOW AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p841, !f842

RESISTANCE SENSOR RETURN AND HARNESS

DISCONNECT CONNECTOR X13 FROM THE PCB

Next: p1375, !f843

INSPECTION SYSTEM PRESSURE

Next: p875, ?871, ?873

INSPECTION CONDENSATE

Next: p583, !f891

INSPECTION FLUE

Next: p917, !f918

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET TEST POINT

Next: p919, !f920

INSPECTION HEAT EXCHANGER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p921, !f922

INSPECTION BURNER

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p923, !f924

INSPECTION AIR INTAKE

BURNER & FAN ASSEMBLY REMOVED FROM APPLIANCE

Next: p925, !f926

INSPECTION VENTURI

REMOVE FAN & BURNER ASSEMBLY
REMOVE AIR INTAKE FROM FAN & BURNER ASSEMBLY

Next: !p927, !f928

OBSERVATION DHW ISOLATION VALVE

Next: p95, !f96

VOLTAGE EXTERNAL CONTROLS CH INTO BOILER (NO DEMAND)

{GAINPCBACS}
ENSURE NO DEMANDS

Next: !p939, !f940

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}

Next: p934, !f935

RESISTANCE HARNESS DIVERTER VALVE

DISCONNECT X5 FROM THE PCB
DISCONNECT PLUG FROM DIVERTER VALVE

Next: !p936, !f937

INSPECTION FLOW SWITCH ASSEMBLY

ISOLATE MAINS WATER

Next: !p97, !f98

System Information

  • Total Tests: 582
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control