XSol Diagnostic System

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:

BAXI SOLO HE VARIANTS (NO AIR PRESSURE SWITCH) GBM

GLOBALLY REPLACED

Next: &1, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

CASE OFF

OUTER CASE RE

Next: &587, !f2

SPARKING PRESENT

Next: &74, f176

BURNER IGNITES AND ESTABLISHES

Next: &117, ?75, ?77, ?79, ?1911

BOILER OPERATION

Next: &711, ?118, ?120, ?122, ?124, ?1402

DIAGNOSTIC OPTION

Next: &589, !f588

FAULT CODES

Next: &939, !f590

FAULT MAINS SUPPLY

THIS PAGE IS NOT USED

Next: &nff, f596

FAULT_DRY FIRE

THIS PAGE IS NOT USED
LINKS TO FLOW AND RETURN REVERSED

Next: &nff, f609

FAULT REVERSED POLARITY

THIS PAGE IS NOT USED
LINKS TO MAINS SUPPLY INTO BOILER

Next: &nff, f613

FAULT PCB ERROR

THIS PAGE IS NOT USED
LINKS TO FAULT FOUND-PCB MAIN

Next: &nff, !f632

FAULT_ INSUFFICIENT ELECTRIC SUPPLY

THIS PAGE IS NOT USED
LINKS TO MAINS POWER TO BOILER

Next: &nff, f631

FAULT LOW VOLTAGE HARNESS

THIS PAGE IS NOT USED
LINKS TO -HARNESS LOW VOLTAGE

Next: &nff, f1499

DHW DEMAND

EXTERNAL DHW CONTROLS CALLING FOR HEAT

Next: &nff, !f712

FAN RUNS

Next: &68, f940

PCB FURTHER INVESTIGATION

OK TO BE BLANK

Next: &nff, f1150

FUSE FURTHER INVESTIGATION

HEADER FOR FUSE INVESTIGATION

Next: &nff, f1027

FUSE OR RCD FURTHER INVESTIGATION

HEADER FOR FUSE OR RCD INVESTIGATION

Next: &nff, f2117

FAULT_FAN FAULT

NOT USED

Next: &nff, f2133

HEADER FOR INTERMITTENT IGNITION INVESTIGATION

HEADER FOR INTERMITTENT IGNITION LOCKOUT INVESTIGATION - NOT USED

Next: &nff, f2234

LITE DIAGNOSTIC

DIAGNOSIS RELIES ON

Next: &nff, !f2758

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f2760

HEADER FOR QADAI FLOW THERMISTOR RESISTANCE

OK TO BE BLANK

Next: &nff, f2762

HEADER FOR QADAI GAS VALVE RESISTANCE

OK TO BE BLANK

Next: &nff, f2768

HEADER FOR QADAI GAS VALVE VOLTAGE

OK TO BE BLANK

Next: &nff, f2769

HEADER FOR QADAI FAN RESISTANCE

OK TO BE BLANK

Next: &nff, f2770

BOILER DOES NOT RESET

Z REDIRECTION BY HTML LINK

Next: End

SEIZED

FAN

Next: End

FAN RUNS

FUSE

Next: End

FAN RUNS

HARNESS HIGH VOLTAGE

Next: End

RESISTANCE

FAN

Next: End

_PCB_MAINS FAULT CODE

FUSE

Next: End

FURTHER INVESTIGATION FAN

PCB + HARNESS HIGH VOLTAGE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

KIT - ELECTRODE

Next: End

RESTRICTED_BURNER LIGHTS BUT DOESNT ESTABLISH

FLUE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

PIPE 5MM

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

HEAT EXCHANGER FLUE WAYS

Next: End

CONDENSATE_BURNER IGNITES BUT DOESNT ESTAB

HARNESS HIGH VOLTAGE

Next: End

OVERHEAT

SEAL COMBUSTION

Next: End

OVERHEAT DURING OP

THERMISTOR - FLOW TEMPERATURE

Next: End

OVERHEAT WILL NOT RESET

THERMISTOR - FLOW TEMPERATURE

Next: End

OVERHEATING

PUMP

Next: End

FURTHER INVESTIGATION

PUMP + PCB

Next: End

FURTHER INVESTIGATION

PCB + GAS VALVE

Next: End

_OPEN OR SHORT CIRCUIT_MAINS FAULT CODE

Next: End

FAN RUNS

FILTER - EMC

Next: End

RADS TOO HOT

THERMISTOR - FLOW TEMPERATURE

Next: End

RADS TOO MUCH HEAT

PCB CONTROL JUMPERS

Next: End

OC_MAINS FAULT CODE

FILTER - EMC

Next: End

BOILER NOISEY

PUMP

Next: End

PRIMARY13

THERMISTOR - FLOW TEMPERATURE

Next: End

BOILER NOISY_BOILER OPERATION

PCB CONTROL JUMPERS

Next: End

BOILER OUTPUT INSUFFICIENT15

FAN

Next: End

FAN_BOILER OUTPUT INSUFFICIENT15

HARNESS HIGH VOLTAGE

Next: End

RADIATORS PROVIDE INSUFFICIENT HEAT15

GAS INLET PRESSURE

Next: End

RADIATORS PROVIDE INSUFFICIENT HEAT15

PIPE - FEED - BURNER

Next: End

RESTRICTED_BOILER OUTPUT INSUFFICIENT15

VENTURI

Next: End

TOO SMALL_BOILER NOISY_BOILER OP

PIPEWORK

Next: End

BURRED_BOILER_NOISY

VENTURI

Next: End

PRIMARY14

THERMISTOR - FLOW TEMPERATURE

Next: End

POOR HEAT

PCB CONTROL JUMPERS

Next: End

BOILER TO TEMPERATURE RADIATORS COOL

PUMP

Next: End

FAN RUNS RESISTOR DAMAGED

HARNESS LOW VOLTAGE

Next: End

PCB NOT READING_FAULT LOW VOLTAGE HARNESS

HARNESS LOW VOLTAGE

Next: End

BOILER TO TEMPERATURE RADIATORS COOL

Next: End

FAN DOES NOT RUN

HARNESS LOW VOLTAGE

Next: End

NO POWER TO PUMP_PUMP FED VIA EXTERNAL CONTROLS

Next: End

FLOW SWITCH OC_PUMP FED VIA EXTERNAL CONTROLS

Next: End

PUMP WIRED VIA BOILER PUMP FEED

THERMOSTAT - SAFETY

Next: End

PUMP WIRED VIA BOILER PUMP FEED

THERMOSTAT - FAN PROTECTION

Next: End

PRIMARY

THERMISTOR - FLOW TEMPERATURE

Next: End

PCB TO PUMP FEED_PUMP RUNS

HARNESS HIGH VOLTAGE

Next: End

NO POWER_FAN RUNS

WIRING BOILER TO PUMP

Next: End

FLOW SWITCH OC_PUMP FED BY BOILER

PUMP

Next: End

NO POWER TO PUMP_PUMP FED VIA EXTERNAL CONTROLSFAULT DRY FIRE

Next: End

FLOW SWITCH OC_PUMP FED VIA EXTERNAL CONTROLSFAULT DRY FIRE

Next: End

PCB TO PUMP FEED_FAULT DRY FIRE

HARNESS HIGH VOLTAGE

Next: End

NO POWER_FAULT DRY FIRE

WIRING BOILER TO PUMP

Next: End

FLOW SWITCH OC_PUMP FED BY BOILERFAULT DRY FIRE

PUMP

Next: End

FAN DOES NOT RUNFAULT DRY FIRE

HARNESS LOW VOLTAGE

Next: End

PUMP WIRED VIA BOILER PUMP FEED FAULT DRY FIRE

CONTROL - ELECTRONIC

Next: End

LOW VOLTAGE_FAULT INSUFFICIENT SUPPLY

CONTROL - ELECTRONIC

Next: End

FAN RUNS

RESET BUTTON

Next: End

BOILER AND RADS ONLY GET WARM

PUMP

Next: End

NO SPARKING

KIT - ELECTRODE - 1 SHORT AND 2 LONG

Next: End

NO SPARKING

KIT - ELECTRODE - 3 SHORT WIRES

Next: End

NO SPARKING

KIT - ELECTRODE (NO WIRES)

Next: End

NO SPARKING

HARNESS IGNITION

Next: End

NO SPARKING

HARNESS IGNITION (3 SHORT WIRES)

Next: End

BURNER DOES NOT IGNITE

CONTROL - ELECTRONIC

Next: End

BURNER DOES NOT IGNITE

VALVE - GAS

Next: End

BURNER DOES NOT IGNITE

PIPE - FEED - BURNER

Next: End

NO GAS FLOW

PIPE 5MM

Next: End

SPARKING PRESENT CH

KIT - ELECTRODE

Next: End

WRONG GAS RATE

HARNESS LOW VOLTAGE

Next: End

RADIATORS PROVIDE INSUFFICIENT HEAT

GAS INLET PRESSURE

Next: End

BURNER DOES NOT IGNITE POOR IGNITION

KIT - ELECTRODE

Next: End

DOES NOT IGNITE POOR IGNITION

KIT - ELECTRODE - 1 SHORT AND 2 LONG

Next: End

DOES NOT IGNITE POOR IGNITION

KIT - ELECTRODE - 3 SHORT WIRES

Next: End

DOES NOT IGNITE POOR IGNITION

HARNESS IGNITION (3 SHORT WIRES)

Next: End

DOES NOT IGNITE POOR IGNITION

KIT - ELECTRODE (NO WIRES)

Next: End

BURNER DOES NOT IGNITE POOR IGNITION

HARNESS IGNITION

Next: End

BURNER DOES NOT IGNITE POOR IGNITION

BURNER ASSEMBLY

Next: End

POOR IGNITION

GAS INLET PRESSURE

Next: End

POOR IGNITION

PIPE - FEED - BURNER

Next: End

IGNITION SETTING

PCB CONTROL JUMPERS

Next: End

POOR IGNITION

PIPE 5MM

Next: End

BLANK FOR NO VOLTAGE TO APPLIANCE

Z REDIRECTION BY HTML LINK

Next: End

RADS ONLY GET WARM

FLUE

Next: End

RESTRICTED_BOILER OUTPUT INSUFFICIENT

VENTURI

Next: End

RADIATORS PROVIDE INSUFFICIENT HEAT

PIPE - FEED - BURNER

Next: End

BOILER OUTPUT INSUFFICIENT

FAN

Next: End

RADS ONLY GET WARM

BURNER ASSEMBLY

Next: End

RADS ONLY GET WARM

HEAT EXCHANGER FLUE WAYS

Next: End

FUSE OR RCD

PUMP

Next: End

CASE OFF

Z REDIRECTION BY HTML LINK

Next: End

FUSE OR RCD

HARNESS HIGH VOLTAGE

Next: End

FUSE OR RCD

VALVE - GAS

Next: End

RESTRICTED / BLOCKED

KIT - CONDENSATE TRAP

Next: End

POOR IGNITION

KIT - CONDENSATE TRAP

Next: End

DOES NOT IGNITE

KIT - CONDENSATE TRAP

Next: End

BURNER DOES NOT IGNITE

VENTURI

Next: End

BURNER DOES NOT IGNITE

PIPE 5MM

Next: End

BURNER DOES NOT IGNITE

KIT - ELECTRODE

Next: End

DOES NOT IGNITE

KIT - ELECTRODE - 1 SHORT AND 2 LONG

Next: End

DOES NOT IGNITE

KIT - ELECTRODE - 3 SHORT WIRES

Next: End

DOES NOT IGNITE

HARNESS IGNITION (3 SHORT WIRES)

Next: End

DOES NOT IGNITE

KIT - ELECTRODE (NO WIRES)

Next: End

BURNER DOES NOT IGNITE

HARNESS IGNITION

Next: End

BURNER DOES NOT IGNITE

BURNER ASSEMBLY

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BAFFLES

KIT - CONDENSATE TRAP

Next: End

BURNER BAFFLES

PIPE 5MM

Next: End

BAFFLES

VENTURI

Next: End

BAFFLES

SEAL COMBUSTION

Next: End

BURNER BAFFLES OUT

HEAT EXCHANGER FLUE WAYS

Next: End

FUSE OR RCD BLOWING 2

Z REDIRECTION BY HTML LINK

Next: End

PATH TO EARTH

THERMISTOR - FLOW TEMPERATURE

Next: End

SHORTED TO EARTH

THERMOSTAT - FAN PROTECTION

Next: End

SHORTED TO EARTH

THERMOSTAT - SAFETY

Next: End

FAN FAULT

HARNESS HIGH VOLTAGE

Next: End

FAN FAULT FAN RUNS

HARNESS HIGH VOLTAGE

Next: End

FAN FAULT SEIZED

FAN

Next: End

FAN FAULT RESISTANCE

FAN

Next: End

BURNER BAFFLES

FLUE

Next: End

BURNER BAFFLES OUT REAR

HEAT EXCHANGER FLUE WAYS

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

BURNER ASSEMBLY

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH REAR

HEAT EXCHANGER FLUE WAYS

Next: End

RADS ONLY GET WARM REAR

HEAT EXCHANGER FLUE WAYS

Next: End

INTERMITTENT IGNITION

GAS INLET PRESSURE

Next: End

NO SPARKING INTERMITTENT

KIT - ELECTRODE - 1 SHORT AND 2 LONG

Next: End

INTERMITTENT IGNITION1 SHORT WIRE 2 LONG

KIT - CONDENSATE TRAP

Next: End

INTERMITTENT IGNITION1 SHORT WIRE 2 LONG

PIPE 5MM

Next: End

RADS ONLY GET WARMINTERMITTENT1 SHORT WIRE 2 LONG

FLUE

Next: End

RESTRICTED_BOILER OUTPUT INSUFFICIENTINTERMITTENT1 SHORT WIRE 2 LONG

VENTURI

Next: End

RADIATORS PROVIDE INSUFFICIENT HEATINTERMITTENT1 SHORT WIRE 2 LONG

PIPE - FEED - BURNER

Next: End

RADS ONLY GET WARMINTERMITTENT1 SHORT WIRE 2 LONG

BURNER ASSEMBLY

Next: End

NO SPARKING INTERMITTENT

KIT - ELECTRODE - 3 SHORT WIRES

Next: End

NO SPARKING INTERMITTENT

HARNESS IGNITION (3 SHORT WIRES)

Next: End

INTERMITTENT IGNITION3 SHORT WIRES

KIT - CONDENSATE TRAP

Next: End

INTERMITTENT IGNITION3 SHORT WIRES

PIPE 5MM

Next: End

RADS ONLY GET WARMINTERMITTENT3 SHORT WIRES

FLUE

Next: End

RESTRICTED_BOILER OUTPUT INSUFFICIENTINTERMITTENT3 SHORT WIRES

VENTURI

Next: End

RADIATORS PROVIDE INSUFFICIENT HEATINTERMITTENT3 SHORT WIRES

PIPE - FEED - BURNER

Next: End

RADS ONLY GET WARMINTERMITTENT3 SHORT WIRES

BURNER ASSEMBLY

Next: End

NO SPARKING INTERMITTENT

KIT - ELECTRODE (NO WIRES)

Next: End

NO SPARKING INTERMITTENT

HARNESS IGNITION

Next: End

INTERMITTENT IGNITION

KIT - CONDENSATE TRAP

Next: End

INTERMITTENT IGNITION

PIPE 5MM

Next: End

RADS ONLY GET WARMINTERMITTENT

FLUE

Next: End

RESTRICTED_BOILER OUTPUT INSUFFICIENTINTERMITTENT

VENTURI

Next: End

RADIATORS PROVIDE INSUFFICIENT HEATINTERMITTENT

PIPE - FEED - BURNER

Next: End

RADS ONLY GET WARMINTERMITTENT

BURNER ASSEMBLY

Next: End

NO SPARKING INTERMITTENT IGNITION

KIT - ELECTRODE - 1 SHORT AND 2 LONG

Next: End

NO SPARKING INTERMITTENT IGNITION

KIT - ELECTRODE - 3 SHORT WIRES

Next: End

NO SPARKING INTERMITTENT IGNITION

HARNESS IGNITION (3 SHORT WIRES)

Next: End

NO SPARKING INTERMITTENT IGNITION

KIT - ELECTRODE (NO WIRES)

Next: End

NO SPARKING INTERMITTENT IGNITION

HARNESS IGNITION

Next: End

INTERMITTENT IGNITION

HARNESS HIGH VOLTAGE

Next: End

NOT RECOGNISING HALL SENSOR WHITE LABEL

CONTROL - ELECTRONIC

Next: End

FAN NEUTAL FAULT WHITE LABEL

CONTROL - ELECTRONIC

Next: End

NOT RECOGNISING HALL SENSOR

CONTROL - ELECTRONIC

Next: End

FAN NEUTAL FAULT

CONTROL - ELECTRONIC

Next: End

NOT RECOGNISING HALL SENSOR WHITE LABEL FAN FAULT CODE

CONTROL - ELECTRONIC

Next: End

FAN NEUTAL FAULT WHITE LABEL FAN FAULT CODE

CONTROL - ELECTRONIC

Next: End

NOT RECOGNISING HALL SENSOR FAN FAULT CODE

CONTROL - ELECTRONIC

Next: End

FAN NEUTAL FAULT FAN FAULT CODE

CONTROL - ELECTRONIC

Next: End

NO VOLTAGE TO FAN HALL SENSOR (WHITE LABEL)

CONTROL - ELECTRONIC

Next: End

FAN FAULT - HALL SENSOR (WHITE LABEL)

FAN

Next: End

NO VOLTAGE TO FAN HALL SENSOR

CONTROL - ELECTRONIC

Next: End

FAN FAULT - HALL SENSOR

FAN

Next: End

NO SPARKING

VALVE - GAS

Next: End

INTERMITTENT IGNITION

HEAT EXCHANGER FLUE WAYS

Next: End

INTERMITTENT 1

HEAT EXCHANGER FLUE WAYS

Next: End

INTERMITTENT 2

HEAT EXCHANGER FLUE WAYS

Next: End

BLANK FOR LITE DIAGNOSTIC

Z REDIRECT

Next: End

BLANK FOR QADAI

Z REDIRECT

Next: End

QADAI

THERMISTOR - FLOW TEMPERATURE

Next: End

QADAI

VALVE - GAS

Next: End

QADAI

CONTROL - ELECTRONIC

Next: End

QADAI

FAN

Next: End

POOR SUPPLY_BURNER IGNITES BUT DOES BNOT ESTABLISH

GAS INLET PRESSURE

Next: End

EARTHING_BURNER IGNITES BUT DOESNT ESTABLISH

KIT - CONDENSATE TRAP

Next: End

DIAGNOSTIC OPTION

Z REDIRECTION BY HTML LINK

Next: End

_FAULT CODES

Z REDIRECTION BY HTML LINK

Next: End

REVERSED_DRY FIRE

FLOW AND RETURN

Next: End

POLARITY_FAULT REVERSED POLARITY

Next: End

ERROR_FAULT PCB

CONTROL - ELECTRONIC

Next: End

_LOW VOLTAGE_FAULT INSUFFICIENT SUPPLY

Next: End

LOW VOLTAGE_INSUFFICIENT SUPPLY

HARNESS HIGH VOLTAGE

Next: End

DHW DEMAND

Next: End

DIES AWAY

GAS INLET PRESSURE

Next: End

PRIMARY1

THERMISTOR - FLOW TEMPERATURE

Next: End

PUMP WIRED VIA BOILER PUMP FEED26

THERMOSTAT - SAFETY

Next: End

PUMP WIRED VIA BOILER PUMP FEED16

THERMOSTAT - FAN PROTECTION

Next: End

SYSTEM TEST

Next: End

PUMP WIRED VIA BOILER PUMP FEED2

THERMOSTAT - SAFETY

Next: End

PUMP WIRED VIA BOILER PUMP FEED1

THERMOSTAT - FAN PROTECTION

Next: End

2PRIMARY1

THERMISTOR - FLOW TEMPERATURE

Next: End

LED FAULTY

CONTROL - ELECTRONIC

Next: End

FAN RUNS

THERMOSTAT - SAFETY

Next: End

FAN RUNS

THERMOSTAT - FAN PROTECTION

Next: End

FAN RUNS

THERMISTOR - FLOW TEMPERATURE

Next: End

FUSE BLOWN

Z REDIRECTION BY HTML LINK

Next: End

FAN RUNS 1

CONTROL - ELECTRONIC

Next: End

NO POWER_MAINS FAULT CODE

CONTROL - ELECTRONIC

Next: End

MAINS SUPPLY FUSE

Z REDIRECTION BY HTML LINK

Next: End

FURTHER INVESTIGATION

PCB + FAN

Next: End

NO RECTIFICATION_BURNER IGNITES BUT DOESNT ESTABLISH

CONTROL - ELECTRONIC

Next: End

BOILER NOISY_BOILER OPERATION

CONTROL - ELECTRONIC

Next: End

BOILER NOISY_BOILER OPERATION6

CONTROL - ELECTRONIC

Next: End

FURTHER INVESTIGATION

PUMP WIRING + PCB

Next: End

FURTHER INVESTIGATION GAS VALVE

PCB + HARNESS HIGH VOLTAGE

Next: End

FURTHER INVESTIGATION

CONTROL - ELECTRONIC

Next: End

FAN DOES NOT RUN

HARNESS HIGH VOLTAGE

Next: End

BOILER TOO HOT_BOILER OPERATION

CONTROL - ELECTRONIC

Next: End

RADS TOO MUCH HEAT

CONTROL - ELECTRONIC

Next: End

NO POWER_MAINS FAULT CODE

HARNESS HIGH VOLTAGE

Next: End

THERMISTOR_FAN RUNS13

HARNESS LOW VOLTAGE

Next: End

HALL SENSOR_BOILER OUTPUT INSUFFICIENT15

CONTROL - ELECTRONIC

Next: End

RADIATORS PROVIDE INSUFFICIENT HEAT15

VALVE - GAS

Next: End

HEAT EXCHANGER_BOILER NOISY

HEAT EXCHANGER ASSEMBLY

Next: End

THERMISTOR_FAN RUNS14

HARNESS LOW VOLTAGE

Next: End

GAS RATE_BOILER OUTPUT INSUFFICIENT

CONTROL - ELECTRONIC

Next: End

FAULT LOW VOLTAGE HARNESS

CONTROL - ELECTRONIC

Next: End

BOILER TO TEMPERATURE RADIATORS COOL

Next: End

PUMP WIRED VIA EXTERNAL CONTROLS

Next: End

OPEN CIRCUIT PUMP RUNNING FED VIA EXTERNAL CONTROLS

Next: End

STATS_PUMP RUNS

HARNESS HIGH VOLTAGE

Next: End

PUMP WIRED VIA BOILER PUMP FEED

CONTROL - ELECTRONIC

Next: End

THERMISTOR_FAN RUNS

HARNESS LOW VOLTAGE

Next: End

POWER TO PUMP_BOILER FED_FAN RUNS

PUMP

Next: End

OPENCIRCUIT PUMP RUNNING BOILKER FED PUMP

FLOW SWITCH

Next: End

PUMP WIRED VIA EXTERNAL CONTROLSFAULT DRY FIRE

Next: End

OPEN CIRCUIT PUMP RUNNING FED VIA EXTERNAL CONTROLS FAULT DRY FIRE

Next: End

POWER TO PUMP_BOILER FED_FAULT DRY FIRE

PUMP

Next: End

OPENCIRCUIT PUMP RUNNING BOILKER FED PUMPFAULT DRY FIRE

FLOW SWITCH

Next: End

IGNORING FLOW SWITCH FAULT DRY FIRE

CONTROL - ELECTRONIC

Next: End

MAINS SUPPLY LOW

BOILER RESET

Next: End

LOCKOUT

CONTROL - ELECTRONIC

Next: End

NO SPARKING - ELEC 1 SHORT 2 LONG

CONTROL - ELECTRONIC

Next: End

NO SPARKING - ELEC 3 SHORT

CONTROL - ELECTRONIC

Next: End

NO SPARKING

CONTROL - ELECTRONIC

Next: End

BURNER DOES NOT IGNITE

GAS INLET PRESSURE

Next: End

PCB FAULT NO POWER TO GAS VALVE

Z REDIRECTION BY HTML LINK

Next: End

GAS VALVE_BURNER DOES NOT IGNITE

HARNESS HIGH VOLTAGE

Next: End

MECHANICAL FAILURE

VALVE - GAS

Next: End

DOES NOT IGNITE POOR SPARK - ELEC 1 SHORT 2 LONG POOR IGNITION

CONTROL - ELECTRONIC

Next: End

DOES NOT IGNITE POOR SPARK - ELEC 3 SHORT POOR IGNITION

CONTROL - ELECTRONIC

Next: End

BURNER DOES NOT IGNITE POOR SPARK POOR IGNITION

CONTROL - ELECTRONIC

Next: End

DOES NOT IGNITE /W GAS USE POOR IGNITION

VALVE - GAS

Next: End

FAN RUNS

Next: End

FUSE OR RCD

WIRING BOILER TO PUMP

Next: End

FUSE OR RCD

FAN

Next: End

FUSE OR RCD 2

HARNESS HIGH VOLTAGE

Next: End

DOES NOT IGNITE POOR SPARK - ELEC 1 SHORT 2 LONG

CONTROL - ELECTRONIC

Next: End

DOES NOT IGNITE POOR SPARK - ELEC 3 SHORT

CONTROL - ELECTRONIC

Next: End

BURNER DOES NOT IGNITE POOR SPARK

CONTROL - ELECTRONIC

Next: End

DOES NOT IGNITE /W GAS USE

VALVE - GAS

Next: End

BAFFLES OUT

VALVE - GAS

Next: End

FUSE OR RCD BLOWING

Z REDIRECTION BY HTML LINK

Next: End

PCB BLOWING FUSE

PCB - FUSE INVESTIGATION

Next: End

SHORTED TO EARTH

HARNESS LOW VOLTAGE

Next: End

SHORTED TO EARTH

HARNESS HIGH VOLTAGE

Next: End

FAN FAULT FAN RUNS 1

CONTROL - ELECTRONIC

Next: End

LOW TEMP OUTPUT

CONTROL - ELECTRONIC

Next: End

NO SPARKING - ELEC 1 SHORT 2 LONG INTERMITTENT IGNITION

CONTROL - ELECTRONIC

Next: End

NO SPARKING - ELEC 3 SHORT INTERMITTENT IGNITION

CONTROL - ELECTRONIC

Next: End

NO SPARKING INTERMITTENT IGNITION

CONTROL - ELECTRONIC

Next: End

ELECTRICAL FAULT PREVENTING RUNNING WHITE LABEL

FAN

Next: End

ELECTRICAL FAULT PREVENTING RUNNING

FAN

Next: End

ELECTRICAL FAULT PREVENTING RUNNING WHITE LABEL FAN FAULT CODE

FAN

Next: End

ELECTRICAL FAULT PREVENTING RUNNING FAN FAULT CODE

FAN

Next: End

NOT RECOGNISING HALL SENSOR FAULT CODE (WHITE LABEL)

CONTROL - ELECTRONIC

Next: End

NOT RECOGNISING HALL SENSOR FAULT CODE

CONTROL - ELECTRONIC

Next: End

NO SPARKING

HARNESS HIGH VOLTAGE

Next: End

NO FAULT FOUND

INTERMITTENT IGNITION INVESTIGATION

Next: End

NO FAULT FOUND3 SHORT WIRES

INTERMITTENT IGNITION INVESTIGATION

Next: End

NO FAULT FOUND1 SHORT WIRE 2 LONG

INTERMITTENT IGNITION INVESTIGATION

Next: End

FLOW THERMISTOR RESISTANCE

RESULT AS EXPECTED

Next: End

GAS VALVE RESISTANCE

RESULT AS EXPECTED

Next: End

GAS VALVE VOLTAGE

RESULT AS EXPECTED

Next: End

FAN RESISTANCE

RESULT AS EXPECTED

Next: End

POLARITY_FAULT REVERSED POLARITY

CONTROL - ELECTRONIC

Next: End

LOW VOLTAGE_FAULT INSUFFICIENT SUPPLY

Next: End

PUMP WIRED VIA BOILER PUMP FEED1

CONTROL - ELECTRONIC

Next: End

THERMISTOR_FAN RUNS1

HARNESS LOW VOLTAGE

Next: End

STAT_PUMP RUNS26

HARNESS HIGH VOLTAGE

Next: End

STAT_PUMP RUNS2

HARNESS HIGH VOLTAGE

Next: End

2THERMISTOR_FAN RUNS1

HARNESS LOW VOLTAGE

Next: End

LED FAULTY

Z REDIRECTION BY HTML LINK

Next: End

STATS

HARNESS LOW VOLTAGE

Next: End

THERMISTOR

HARNESS LOW VOLTAGE

Next: End

FAN DOES NOT RUN

LOCKOUT

Next: End

BOILER TO TEMPERATURE, RADIATORS COOL

CHARACTERISTIC TEST FROM BOILER OPERATION

Next: p119

OVERHEAT OCCURS DURING OPERATION

CHARACTERISTIC TEST FROM BOILER OPERATION

Next: p849

Boiler noisy

CHARACTERISTIC TEST FROM BOILER OPERATION

Next: p1427

BOILER AND RADIATORS ONLY GET WARM

CHARACTERISTIC TEST FROM BOILER OPERATION

Next: p1454

BOILER AND RADIATORS PROVIDE TOO MUCH HEAT

CHARACTERISTIC TEST FROM BOILER OPERATION

Next: p1403

ELECTRODE HAS 3 SHORT WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p1728

ELECTRODE HAS 1 SHORT WIRE AND 2 LONG WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p1730

NO DROP OR VERY MINOR DROP IN THE STANDING PRESSURE OBSERVED

CHARACTERISTIC TEST FROM GAS USAGE

Next: p2018

INLET PRESSURE DROPS BELOW 18MB

CHARACTERISTIC TEST FROM GAS USAGE

Next: !p1777

BURNER IGNITES BUT IGNITION POOR (HEAVY / DELAYED / EXPLOSIVE / SLOW)

CHARACTERISTIC TEST FROM BURNER IGNITION

Next: p1940

ELECTRODE HAS 3 SHORT WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p1921

ELECTRODE HAS 1 SHORT WIRE AND 2 LONG WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p1923

ELECTRODE HAS 3 SHORT WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p2080

ELECTRODE HAS 1 SHORT WIRE AND 2 LONG WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p2082

ELECTRODE HAS 3 SHORT WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p2506

ELECTRODE HAS 1 SHORT WIRE AND 2 LONG WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p2508

ELECTRODE HAS 3 SHORT WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p2627

ELECTRODE HAS 1 SHORT WIRE AND 2 LONG WIRES

CHARACTERISTIC TEST FROM OBSERVATION TYPE OF ELECTRODE FITTED

Next: p2629

Burner does not ignite

CHARACTERISTIC TEST FROM BURNER IGNITION

Next: p76

Burner ignites BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM BURNER IGNITION

Next: p367

Burner igniteS, SPARKING CEASES but flame baffles out or dies away

CHARACTERISTIC TEST FROM BURNER IGNITION

Next: p80

27/07/2023 08:43:20 2304_1_50_1 29/11/2023 12:50:15

03/08/2023 09:54:36

Next: End

RESISTANCE GAS VALVE AND HARNESS

UNPLUG THE 6 WAY CONNECTOR FROM THE PCB

Next: p1028, f1042

RESISTANCE GAS VALVE

DISCONNECT GAS VALVE ELECTRICAL CONNECTOR PLUG FROM GAS VALVE

Next: !p2003, !f2002

HARNESS FAN (SHORT)

REMOVE THE FAN HARNE

Next: !p2000, !f2001

RESISTANCE PUMP

DISCONNECT WIRES FROM PUMP
(PUMP IS FITTED EXTERNAL TO APPLIANCE)

Next: !p1998, !f1999

FURTHER INVESTIGATION FUSE

Next: !p1148, !f1149

RESISTANCE FAN AND HARNESS

DISCONNECT FAN CONNECTOR (RED AND BLUE WIRES) FROM THE PCB

Next: p1370, f1152

HARNESS FAN (SHORT)

REMOVE THE FAN HARNE

Next: !p1236, !f1237

RESISTANCE FAN AND HARNESS

DISCONNECT FAN CONNECTOR (RED AND BLUE WIRES) FROM THE PCB

Next: !p1197, !f1198

FURTHER INVESTIGATION FUSE

Next: !p1205, !f1208

RESISTANCE PUMP

DISCONNECT WIRES FROM PUMP
(PUMP IS FITTED EXTERNAL TO APPLIANCE)

Next: !p1373, !f1374

RESISTANCE GAS VALVE

DISCONNECT GAS VALVE ELECTRICAL CONNECTOR PLUG FROM GAS VALVE

Next: !p1378, !f1379

PCB CONTROL JUMPERS

HINGE DOWN THE PCB HOUSING

Next: !p1408, !f1409

EMC FILTER CONTINUITY

THE BOILER MAY NOT H

Next: !p1411, !f1412

RESISTANCE THERMISTOR FLOW

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: !p1432, !f1433

PCB CONTROL JUMPERS

HINGE DOWN THE PCB HOUSING

Next: p1436, !f1437

MECHANICAL FAN AND HALL SENSOR OPERATION

REMOVE THE WING NUTS

Next: p1440, !f1441

RESISTANCE THERMISTOR FLOW

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: !p1457, !f1458

PCB CONTROL JUMPERS

HINGE DOWN THE PCB HOUSING

Next: p1802, !f1462

RESISTANCE LOW VOLTAGE HARNESS RESISTORS

HINGE DOWN THE PCB HOUSING
REMOVE 8 WAY CONNECTOR FROM PCB

Next: !p1500, !f1501

POWER TO PUMP

THE PUMP CAN BE POWERED BY EITHER EXTERNAL CONTROLS OR VIA THE BOILER

Next: p1535, f1536

PUMP RUNNING (PUMP FED VIA EXTERNAL CONTROLS)

MAKE SURE THERE IS A

Next: p1537, f1538

VOLTAGE AT PUMP (EXTERNAL)

LOCATE THE EXTERNAL PUMP
REMOVE THE COVER FROM THE PUMP

Next: !p1539, !f1540

PCB PUMP VOLTAGE OUT

Next: p1545, f1546

THERMOSTATS

DISCONNECT THE SIX WAY CONNECTOR FROM THE TOP OF THE PCB HOUSING

Next: p1547, f1548

THERMOSTAT - SAFETY

DISCONNECT ONE OF TH

Next: p1549, !f1550

RESISTANCE THERMISTOR FLOW

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: !p1555, !f1556

POWER TO PUMP

THE PUMP CAN BE POWERED BY EITHER EXTERNAL CONTROLS OR VIA THE BOILER

Next: p1566, f1567

PUMP RUNNING (PUMP FED VIA EXTERNAL CONTROLS)

MAKE SURE THERE IS A

Next: p1568, f1569

VOLTAGE AT PUMP (EXTERNAL)

LOCATE THE EXTERNAL PUMP
REMOVE THE COVER FROM THE PUMP

Next: !p1570, !f1571

PCB PUMP VOLTAGE OUT

Next: p1576, !f1627

SPARK ELECTRODE ASSEMBLY

REMOVE THE SPARK ELECTRODE ASSEMBLY

Next: p2727, !f182

FURTHER INVESTIGATION PCB

Next: !p1781, !f1782

GAS VALVE RESISTANCE

DISCONNECT GAS VALVE ELECTRICAL CONNECTOR PLUG FROM GAS VALVE

Next: !p1785, !f1786

SPARK ELECTRODE ASSEMBLY

REMOVE THE SPARK ELECTRODE ASSEMBLY

Next: p1916, !f1917

NO VOLTAGE TO APPLIANCE - FURTHER INVESTIGATION

THIS APPLIANCE DOES

Next: !p1979, !f1980

SPARK ELECTRODE ASSEMBLY

REMOVE THE SPARK ELECTRODE ASSEMBLY

Next: p2075, !f2076

OBSERVATION APPLIANCE ISOLATED

REMOVE THE LIVE, NEU

Next: !p2118, !f2119

RESISTANCE THERMISTOR TO EARTH

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: !p2125, !f2126

RESISTANCE FAN THERMOSTAT TO EARTH

DISCONNECT ONE OF THE BLACK WIRES FROM THE FAN THERMOSTAT LOCATED ADJACENT TO THE FAN

Next: p2127, !f2128

FAN RUNS

Next: p2135, f2142

HARNESS FAN

REMOVE THE FAN HARNE

Next: p2143, !f2144

RESISTANCE FAN AND HARNESS

DISCONNECT FAN CONNECTOR (RED AND BLUE WIRES) FROM THE PCB

Next: !p2149, !f2150

GAS INLET PRESSURE - INTERMITTENT

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2405, !f2293

OBSERVATION TYPE OF ELECTRODE FITTED

PLEASE SELECT WHICH TYPE OF ELECTRODE IS FITTED TO THE APPLIANCE.

Next: p2625, ?2626, ?2628

VOLTAGE PCB FAN SENSOR (WHITE LABEL)

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: p2697, !f2698

VOLTAGE PCB FAN SENSOR (WHITE LABEL)

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: p2708, !f2709

VOLTAGE PCB FAN SENSOR (WHITE LABEL)

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: p2719, !f2720

RESISTANCE GAS VALVE

DISCONNECT GAS VALVE ELECTRICAL CONNECTOR PLUG FROM GAS VALVE

Next: !p2745, !f2746

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE 8 WAY CONNECTOR FROM PCB

Next: !p2763, !f2764

GAS VALVE RESISTANCE

DISCONNECT GAS VALVE ELECTRICAL CONNECTOR PLUG FROM GAS VALVE

Next: !p2771, !f2772

GAS VALVE VOLTAGE

RESET LOCKOUT AS NECESSARY

Next: !p2773, !f2774

RESISTANCE FAN AND HARNESS

DISCONNECT FAN CONNECTOR (RED AND BLUE WIRES) FROM THE PCB

Next: !p2775, !f2776

MAINS POWER TO BOILER

Next: p597, !f1397

FLOW AND RETURN REVERSED

Next: p1563, !f611

MAINS SUPPLY INTO BOILER

Next: !p614, !f623

MAINS POWER SUPPLY LOW

Next: p640, f643

MAINS POWER FROM SUPPLY TO CONTROLS

GAIN ACCESS TO THE EXTERNAL CONTROLS WIRING

Next: !p644, !f645

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE 8 WAY CONNECTOR FROM PCB

Next: !p858, f859

RESISTANCE THERMISTOR FLOW

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: !p860, !f884

OVERHEAT

DISCONNECT THE SIX WAY CONNECTOR FROM THE TOP OF THE PCB HOUSING

Next: p1300, f893

THERMOSTAT - SAFETY

DISCONNECT ONE OF TH

Next: p894, !f895

THERMOSTAT - SAFETY

DISCONNECT ONE OF TH

Next: p911, !f912

RESISTANCE THERMISTOR FLOW

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: !p920, !f921

LED STATUS

OBSERVE THE FASCIA PANEL OF THE BOILER

Next: p941, f942

PCB VOLTAGE IN

Next: p943, f944

MAINS POWER SUPPLY AT BOILER

Next: p1399, f1978

LOCKOUT CHECK

Next: p987, f988

THERMOSTATS

DISCONNECT THE SIX WAY CONNECTOR FROM THE TOP OF THE PCB HOUSING

Next: p989, f990

THERMOSTAT - SAFETY

DISCONNECT ONE OF TH

Next: p991, !f992

RESISTANCE THERMISTOR FLOW

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: !p997, !f998

RESISTANCE FAN AND HARNESS

DISCONNECT FAN CONNECTOR (RED AND BLUE WIRES) FROM THE PCB

Next: p1030, f1043

RESISTANCE PUMP AND HARNESS

DISCONNECT 7 WAY CONNECTOR (YELLOW AND BROWN WIRES) FROM THE PCB

Next: p2120, f1045

MEASUREMENT BOILER SEALS INTEGRITY

Next: p850, !f1296

OBSERVATION FAN

DISCONNECT FAN CONNECTOR ILLUSTRATED AND PLACE IN A SAFE POSITION

Next: p2694, f1196

INSPECTION FAN FREE

Next: p1115, !f1144

HARNESS FAN

REMOVE THE FAN HARNE

Next: p1130, !f1194

PUMP LIMPET TEST

Next: p147, !f148

INSPECTION DETECTION ELECTRODE

CAREFULLY REMOVE THE ELECTRODE ASSEMBLY FROM
THE COMBUSTION BOX DOOR

Next: p404, !f1255

INSPECTION FLUE

Next: p1274, !f1275

CASE PRESSURE PIPE

Next: p2163, !f1277

HEAT EXCHANGER FLUE WAYS

REMOVE INNER PANEL

Next: p1278, !f1279

INSPECTION HEAT EXCHANGER REAR FLUE WAYS

REMOVE INNER PANEL,

Next: !p1280, !f2170

THERMISTOR FLOW TEMPERATURE OVERHEAT

DISCONNECT THE LOW VOLTAGE MOLEX CONNECTOR FROM THE PCB

Next: !p1298, !f1299

THERMISTOR FLOW TEMPERATURE OVERHEAT

DISCONNECT THE LOW VOLTAGE MOLEX CONNECTOR FROM THE PCB

Next: !p1301, !f1302

PUMP LIMPET TEST

Next: p1090, !f1369

RESISTANCE PUMP AND HARNESS

DISCONNECT 7 WAY CONNECTOR (YELLOW AND BROWN WIRES) FROM THE PCB

Next: p1376, f1372

RESISTANCE GAS VALVE AND HARNESS

UNPLUG THE 6 WAY CONNECTOR FROM THE PCB

Next: !p1380, f1377

EMC FILTER CONTINUITY

THE BOILER MAY NOT H

Next: !p1400, !f1401

RESISTANCE THERMISTOR FLOW

DISCONNECT ONE OF THE RED WIRES FROM THE THERMISTOR

Next: p1404, !f1405

GAS RATE OUTPUT

Next: !p1406, f1407

PUMP LIMPET TEST

Next: p1428, !f1429

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE 8 WAY CONNECTOR FROM PCB

Next: p1430, f1431

GAS RATE OUTPUT

Next: p1434, f1435

PIPE SIZE

Next: p1450, !f1451

FAN PRESSURE

ENSURE GAS IS TURNED OFF AT SERVICE VALVE
ATTACH PRESSURE GAUGE TO BURNER PRESSURE TEST POINT

Next: p1438, f1439

GAS WORKING PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p1444, !f1445

FAN HARNESS CONTINUITY

REMOVE THE CONNECTORS FROM THE FAN AND THE PCB

Next: !p1442, !f1443

INJECTOR PIPE

Next: p1446, !f1447

VENTURI AIR INTAKE

REMOVE THE FAN AND INSPECT THE VENTURI

Next: !p1448, !f1449

VENTURI

REMOVE THE FAN, THERE IS NO NEED TO TAKE THE VENTURI
OFF THE FAN

Next: !p1452, !f1453

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE 8 WAY CONNECTOR FROM PCB

Next: p1670, f1456

GAS RATE

Next: !p1459, f1460

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE 8 WAY CONNECTOR FROM PCB

Next: p149, f919

EXTERNAL BYPASS

Next: !p151, !f152

RESISTANCE LOW VOLTAGE HARNESS RESISTORS

HINGE DOWN THE PCB HOUSING
REMOVE 8 WAY CONNECTOR FROM PCB

Next: p1659, !f1498

RESISTANCE HARNESS FLOW SWITCH

DISCONNECT FLOW SWITCH PLUG AT THE PCB
DISCONNECT THE FLOW SWITCH AT THE INLINE CONNECTOR

Next: p953, !f1532

PUMP RUNNING (PUMP FED BY BOILER)

MAKE SURE THERE IS A

Next: p1543, f1544

PUMP LIMPET TEST

Next: !p1541, !f1542

PUMP LIMPET TEST

Next: !p1561, !f1562

PCB - PUMP FEED SUPPLY

Next: p1557, !f1558

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE 8 WAY CONNECTOR FROM PCB

Next: !p1553, f1554

THERMOSTAT - FAN

DISCONNECT ONE OF THE BLACK WIRES FROM THE FAN THERMOSTAT LOCATED ADJACENT TO THE FAN

Next: !p1551, !f1552

VOLTAGE AT PUMP

LOCATE THE EXTERNAL PUMP
REMOVE THE COVER FROM THE PUMP

Next: !p1559, !f1560

RESISTANCE FLOW SWITCH HARNESS

DISCONNECT THE FLOW

Next: p1564, f1565

RESISTANCE HARNESS FLOW SWITCH

DISCONNECT FLOW SWITCH PLUG AT THE PCB
DISCONNECT THE FLOW SWITCH AT THE INLINE CONNECTOR

Next: !p1625, !f1595

PUMP RUNNING (PUMP FED BY BOILER)

MAKE SURE THERE IS A

Next: p1574, f1575

PUMP LIMPET TEST

Next: !p1572, !f1573

PUMP LIMPET TEST

Next: !p1592, !f1593

PCB - PUMP FEED SUPPLY

Next: p1588, !f1589

VOLTAGE AT PUMP

LOCATE THE EXTERNAL PUMP
REMOVE THE COVER FROM THE PUMP

Next: !p1590, !f1591

RESET LOCKOUT

Next: !p1629, !f1630

INSPECTION RESET BUTTON

Next: !p1660, !f1661

PUMP LIMPET TEST

Next: p1823, !f1694

OBSERVATION TYPE OF ELECTRODE FITTED

PLEASE SELECT WHICH TYPE OF ELECTRODE IS FITTED TO THE APPLIANCE.

Next: p1726, ?1727, ?1729

RESISTANCE SPARK ELECTRODE (NO WIRES)

DISCONNECT THE LEADS

Next: p1737, !f1738

RESISTANCE SPARK ELECTRODE (3 SHORT)

DISCONNECT THE LEADS

Next: p1733, !f1734

RESISTANCE SPARK ELECTRODE (1 SHORT 2 LONG)

CAREFULLY REMOVE THE ELECTRODE ASSEMBLY FROM
THE COMBUSTION BOX DOOR

Next: !p1731, !f1732

RESISTANCE HARNESS SPARK ELECTRODE (3 SHORT)

Next: !p1735, !f1742

RESISTANCE HARNESS SPARK ELECTRODE (NO WIRES)

Next: !p1739, !f1741

GAS VALVE VOLTAGE

RESET LOCKOUT AS NECESSARY

Next: p1779, f1780

GAS VALVE AND HARNESS RESISTANCE

UNPLUG THE 6 WAY CONNECTOR FROM THE PCB

Next: p1783, f1784

INJECTOR PIPE

Next: !p1787, !f1788

CASE PRESSURE PIPE

Next: p1778, !f1801

RESISTANCE LOW VOLTAGE HARNESS RESISTORS

HINGE DOWN THE PCB HOUSING
REMOVE 8 WAY CONNECTOR FROM PCB

Next: p1982, !f1822

GAS WORKING PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p1455, !f1850

CASE PRESSURE PIPE

Next: p1913, !f1976

OBSERVATION SPARKING AT ELECTRODE

REMOVE THE TOP TWO S

Next: p1914, f1915

INSPECTION BURNER ASSEMBLY

Next: p1971, !f1935

OBSERVATION TYPE OF ELECTRODE FITTED

PLEASE SELECT WHICH TYPE OF ELECTRODE IS FITTED TO THE APPLIANCE.

Next: p1918, ?1920, ?1922

RESISTANCE SPARK ELECTRODE (NO WIRES)

DISCONNECT THE LEADS

Next: p1930, !f1931

RESISTANCE SPARK ELECTRODE (3 SHORT)

DISCONNECT THE LEADS

Next: p1926, !f1927

RESISTANCE SPARK ELECTRODE (1 SHORT 2 LONG)

CAREFULLY REMOVE THE ELECTRODE ASSEMBLY FROM
THE COMBUSTION BOX DOOR

Next: !p1924, !f1925

RESISTANCE HARNESS SPARK ELECTRODE (3 SHORT)

Next: !p1928, !f1929

RESISTANCE HARNESS SPARK ELECTRODE (NO WIRES)

Next: !p1932, !f1933

GAS WORKING PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2033, !f1969

INJECTOR PIPE

Next: p1972, !f1973

OBSERVATION PCB IGNITION JUMPER

HINGE DOWN THE PCB HOUSING
REMOVE BLUE JUMPER CN11 IF PRESENT
GAS ON

Next: !p1974, !f1975

INSPECTION FLUE

Next: p1984, !f1983

VENTURI AIR INTAKE

REMOVE THE FAN AND INSPECT THE VENTURI

Next: p1986, !f1985

INJECTOR PIPE

Next: p1988, !f1987

INSPECTION FAN SCROLL

UNDO THE TWO WING NUTS AND LOWER THE FAN ASSEMBLY

Next: p1990, !f1989

INSPECTION BURNER ASSEMBLY

Next: p1995, !f1992

HEAT EXCHANGER FLUE WAYS

REMOVE INNER PANEL

Next: p2171, !f1997

INSPECTION CONDENSATE PIPE

Next: p1789, !f2032

INSPECTION CONDENSATE PIPE

Next: p1912, !f2063

INSPECTION CONDENSATE PIPE

Next: p2068, !f2067

FAN ASSEMBLY AIR INTAKE

Next: p2069, !f2070

CASE PRESSURE PIPE

Next: p2071, !f2072

OBSERVATION SPARKING AT ELECTRODE

REMOVE THE TOP TWO S

Next: p2073, f2074

INSPECTION BURNER ASSEMBLY

Next: p2094, !f2093

OBSERVATION TYPE OF ELECTRODE FITTED

PLEASE SELECT WHICH TYPE OF ELECTRODE IS FITTED TO THE APPLIANCE.

Next: p2077, ?2079, ?2081

RESISTANCE SPARK ELECTRODE (NO WIRES)

DISCONNECT THE LEADS

Next: p2089, !f2090

RESISTANCE SPARK ELECTRODE (3 SHORT)

DISCONNECT THE LEADS

Next: p2085, !f2086

RESISTANCE SPARK ELECTRODE (1 SHORT 2 LONG)

CAREFULLY REMOVE THE ELECTRODE ASSEMBLY FROM
THE COMBUSTION BOX DOOR

Next: !p2083, !f2084

RESISTANCE HARNESS SPARK ELECTRODE (3 SHORT)

Next: !p2087, !f2088

RESISTANCE HARNESS SPARK ELECTRODE (NO WIRES)

Next: !p2091, !f2092

FLUE

Next: !p2095, !f2096

INSPECTION CONDENSATE PIPE

Next: p2099, !f2098

CASE PRESSURE PIPE

Next: p2100, !f2101

FAN ASSEMBLY AIR INTAKE

Next: p2110, !f2102

MEASUREMENT BOILER SEALS INTEGRITY

Next: p2155, !f2112

HEAT EXCHANGER FLUE WAYS

REMOVE INNER PANEL

Next: p2113, !f2114

INSPECTION HEAT EXCHANGER REAR FLUE WAYS

REMOVE INNER PANEL,

Next: !p2115, !f2162

RESISTANCE THERMISTOR AND HARNESS TO EARTH

REMOVE 8 WAY CONNECTOR FROM PCB

Next: p2121, f2122

RESISTANCE SAFETY CIRCUIT TO EARTH

DISCONNECT THE SIX WAY CONNECTOR FROM THE TOP OF THE PCB HOUSING

Next: !p2124, f2123

RESISTANCE OVERHEAT THERMOSTAT TO EARTH

DISCONNECT ONE OF TH

Next: !p2131, !f2130

HARNESS FAN (LV)

REMOVE THE FAN HARNE

Next: p2716, !f2137

INSPECTION FAN FREE

Next: p2145, !f2146

OBSERVATION FAN

DISCONNECT FAN CONNECTOR ILLUSTRATED AND PLACE IN A SAFE POSITION

Next: p2705, f2148

INSPECTION FLUE

Next: p2111, !f2161

INSPECTION BURNER ASSEMBLY

Next: p1276, !f2169

INSPECTION HEAT EXCHANGER REAR FLUE WAYS

REMOVE INNER PANEL,

Next: !p2172, !f2173

OBSERVATION SPARKING AT ELECTRODE - INTERMITTENT

REMOVE THE TOP TWO S

Next: p2640, f2624

OBSERVATION TYPE OF ELECTRODE FITTED

PLEASE SELECT WHICH TYPE OF ELECTRODE IS FITTED TO THE APPLIANCE.

Next: p2504, ?2505, ?2507

INSPECTION ELECTRODE (NO WIRES) - INTERMITTENT IGNITION

DISCONNECT THE LEADS FROM THE ELECTRODES AND CAREFULLY REMOVE THEM FROM THE COMBUSTION BOX DOOR.

Next: p2539, !f2540

INSPECTION ELECTRODE (3 SHORT WIRES) - INTERMITTENT IGNITION

DISCONNECT THE LEADS

Next: p2523, !f2524

INSPECTION ELECTRODE (1 SHORT WIRE AND 2 LONG WIRES) - INTERMITTENT IGNITION

CAREFULLY REMOVE THE ELECTRODE ASSEMBLY FROM
THE COMBUSTION BOX DOOR

Next: p2509, !f2510

INSPECTION CONDENSATE PIPE

Next: p2511, !f2512

CASE PRESSURE PIPE

Next: p2513, !f2514

INSPECTION FLUE

Next: p2515, !f2516

VENTURI AIR INTAKE - INTERMITTENT

REMOVE THE FAN AND INSPECT THE VENTURI

Next: p2517, !f2518

INJECTOR PIPE

Next: p2519, !f2520

INSPECTION BURNER ASSEMBLY

Next: p2753, !f2522

RESISTANCE HARNESS SPARK ELECTRODE (3 SHORT) - INTERMITTENT

Next: p2525, !f2526

INSPECTION CONDENSATE PIPE

Next: p2527, !f2528

CASE PRESSURE PIPE

Next: p2529, !f2530

INSPECTION FLUE

Next: p2531, !f2532

VENTURI AIR INTAKE - INTERMITTENT

REMOVE THE FAN AND INSPECT THE VENTURI

Next: p2533, !f2534

INJECTOR PIPE

Next: p2535, !f2536

INSPECTION BURNER ASSEMBLY

Next: p2750, !f2538

RESISTANCE HARNESS SPARK ELECTRODE (NO WIRES) - INTERMITTENT

Next: p2541, !f2542

INSPECTION CONDENSATE PIPE

Next: p2543, !f2544

CASE PRESSURE PIPE

Next: p2545, !f2546

INSPECTION FLUE

Next: p2547, !f2548

VENTURI AIR INTAKE - INTERMITTENT

REMOVE THE FAN AND INSPECT THE VENTURI

Next: p2549, !f2550

INJECTOR PIPE

Next: p2551, !f2552

INSPECTION BURNER ASSEMBLY

Next: p2747, !f2554

RESISTANCE SPARK ELECTRODE (NO WIRES)

DISCONNECT THE LEADS

Next: p2636, !f2637

RESISTANCE SPARK ELECTRODE (3 SHORT)

DISCONNECT THE LEADS

Next: p2632, !f2633

RESISTANCE SPARK ELECTRODE (1 SHORT 2 LONG)

CAREFULLY REMOVE THE ELECTRODE ASSEMBLY FROM
THE COMBUSTION BOX DOOR

Next: !p2630, !f2631

RESISTANCE HARNESS SPARK ELECTRODE (3 SHORT)

Next: !p2634, !f2635

RESISTANCE HARNESS SPARK ELECTRODE (NO WIRES)

Next: !p2638, !f2639

RESISTANCE RECTIFICATION HARNESS - INTERMITTENT

HINGE DOWN THE PCB H

Next: p2503, !f2693

OBSERVATION WHICH PCB VERSION IS FITTED

INSPECT THE BACK OF THE PCB
WHAT COLOUR IS THE LABEL?

Next: p2695, f2696

VOLTAGE PCB FAN SENSOR

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: p2701, !f2702

RESISTANCE PCB NEUTRAL FOR FAN

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: !p2699, !f2700

RESISTANCE PCB NEUTRAL FOR FAN

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: !p2703, !f2704

OBSERVATION WHICH PCB VERSION IS FITTED

INSPECT THE BACK OF THE PCB
WHAT COLOUR IS THE LABEL?

Next: p2706, f2707

VOLTAGE PCB FAN SENSOR

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: p2712, !f2713

RESISTANCE PCB NEUTRAL FOR FAN

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: !p2710, !f2711

RESISTANCE PCB NEUTRAL FOR FAN

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: !p2714, !f2715

OBSERVATION WHICH PCB VERSION IS FITTED

INSPECT THE BACK OF THE PCB
WHAT COLOUR IS THE LABEL?

Next: p2717, f2718

VOLTAGE PCB FAN SENSOR

POSITION PCB AS ILLUSTRATED IN IMAGE
DISCONNECT FAN CONNECTOR AT THE FAN AND MAKE SAFE

Next: p2723, !f2724

VOLTAGE PCB FAN SENSOR FAN RUNNING (WHITE LABEL)

POSITION PCB AS ILLU

Next: !p2721, !f2722

VOLTAGE PCB FAN SENSOR (FAN RUNNING)

POSITION PCB AS ILLU

Next: !p2725, !f2726

RESISTANCE GAS VALVE AND HARNESS

UNPLUG THE 6 WAY CONNECTOR FROM THE PCB

Next: p1725, f2744

INSPECTION HEAT EXCHANGER REAR FLUE WAYS

REMOVE INNER PANEL,

Next: !p2748, !f2749

INSPECTION HEAT EXCHANGER REAR FLUE WAYS

REMOVE INNER PANEL,

Next: !p2751, !f2752

INSPECTION HEAT EXCHANGER REAR FLUE WAYS

REMOVE INNER PANEL,

Next: !p2754, !f2755

GAS WORKING PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p388, !f368

CONDENSE TRAP

DISCONNECT THE LEAD FROM THE CONDENSE TRAP AT THE INLINE SPADE CONNECTOR AND MAKE SAFE

Next: p1241, !f403

RESISTANCE CHECKS FLAME SENSE LEAD

HINGE DOWN THE PCB H

Next: p1273, !f1282

PCB - SUPPLY VOLTAGE

Next: p599, f1410

FUSE T3.15A

REMOVE FUSE FROM THE PCB HOUSING

Next: !p1201, f1202

PCB - SUPPLY VOLTAGE

Next: p1628, !f646

GAS VALVE OPERATION

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2066, ?1774, ?1776

GAS WORKING PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2097, !f82

RESET BOILER

ENSURE BOILER IS COOL

Next: p1349, f891

BOILER MODULATION

Next: p898, f857

THERMOSTAT - FAN

DISCONNECT ONE OF THE BLACK WIRES FROM THE FAN THERMOSTAT LOCATED ADJACENT TO THE FAN

Next: !p896, !f897

DOES OVERHEAT OCCUR

Next: p908, !f900

OVERHEAT OCCURS

DISCONNECT THE SIX WAY CONNECTOR FROM THE TOP OF THE PCB HOUSING

Next: p1297, f910

THERMOSTAT - FAN

DISCONNECT ONE OF THE BLACK WIRES FROM THE FAN THERMOSTAT LOCATED ADJACENT TO THE FAN

Next: !p913, !f914

RESISTANCE FLOW SWITCH HARNESS

DISCONNECT THE FLOW

Next: p1502, f1534

FUSE T3.15A

REMOVE FUSE FROM THE PCB HOUSING

Next: p949, f1147

LED FAULT

Next: !p951, !f952

PCB VOLTAGE OUT

ENSURE BOILER IS COOL

Next: p1178, f986

RESET LOCKOUT

Next: !p999, !f1000

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE 8 WAY CONNECTOR FROM PCB

Next: p1496, f996

THERMOSTAT - FAN

DISCONNECT ONE OF THE BLACK WIRES FROM THE FAN THERMOSTAT LOCATED ADJACENT TO THE FAN

Next: !p993, !f994

System Information

Total Tests: 587

Sequence Logic: Decoded from encrypted .seq file

Navigation: Dynamic based on pass/fail results

Source: 4731307 GW SWIFTFLOW 100 SIT Control