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:

IDEAL LOGIC SYSTEM BRASS LEFT HAND HYDROBLOCK (PRE ABU)

GLOBALLY REPLACED

Next: &1, *

NO FAULT FOUND

Next: nff

INFORMATION CASE REMOVAL

Next: &1352, !f2

OBSERVATION SELF CHECK AND STANDBY

{ALLDEMANDOFF}
SELECTOR SWITCH TO IN ON POSITION

Next: &71, ?6, ?8, ?12, ?1383

TYPE OF DIAGNOSTIC PROCEDURE

Next: &73, !f72

OBSERVATION PUMP & FAN RUNS

TEMPERATURE CONTROL SET TO MAX
ENSURE BOILER IS COOL
SELECTOR SWITCH SET TO OFF

Next: &129, ?74, ?76, ?78

OBSERVATION BURNER IGNITES AND ESTABLISHES

ENSURE BOILER IS COOL

Next: &232, ?132, ?134, ?136

HEATING OPERATION

THERMOSTAT SET TO MAX

Next: &802, ?233, ?394, ?410, ?519

OPERATION DHW

THERMOSTAT SET TO MAX

Next: &1537, ?803, ?805

L1

INTENTIONALLY BLANK - HEADER FOR L1 FAULT CODE

Next: &nff, f808

L2 / F2 - DUMMY GO TO BURNER IGNITES PAGE

OUTSIDE MODEL

Next: &nff, !f934

L5 / C0

OUTSIDE MODEL

Next: &nff, f936

L6

INTENTIONALLY BLANK - HEADER FOR FAULT CODE L6

Next: &nff, f940

FURTHER INVESTIGATION FUSE BLOWN

OUTSIDE MODEL

Next: &nff, f952

F0 / C2

OUTSIDE MODEL

Next: &nff, f974

F1

INTENTIONALLY BLANK - HEADER FOR F1 FAULT CODE

Next: &nff, f978

F3

OUTSIDE MODEL

Next: &nff, f1015

F4

OUTSIDE MODEL

Next: &nff, f1030

F5

OUTSIDE MODEL

Next: &nff, f1036

F7

INTENTIONALLY BLANK - HEADER FOR F7 FAULT CODE

Next: &nff, f1042

F9

OUTSIDE MODEL

Next: &nff, f1046

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f1050

HEADER FOR QUICK ACCESS DATA FLOW THERMISTOR

OUTSIDE MODEL

Next: &nff, f1052

HEADER FOR QUICK ACCESS DATA GAS VALVE VOLTAGE

OUTSIDE MODEL

Next: &nff, f1056

HEADER FOR QUICK ACCESS DATA GAS VALVE RESISTANCE

OUTSIDE MODEL

Next: &nff, f1060

HEADER FOR QUICK ACCESS DATA FAN VOLTAGE (LOW VOLTAGE)

OUTSIDE MODEL

Next: &nff, f1066

HEADER FOR QUICK ACCESS DATA FAN RESISTANCE

OUTSIDE MODEL

Next: &nff, f1074

HEADER FOR QUICK ACCESS DATA PUMP RESISTANCE

OUTSIDE MODEL

Next: &nff, f1078

HEADER FOR QUICK ACCESS DATA SPARK GENERATOR RESISTANCE

OUTSIDE MODEL

Next: &nff, f1086

HEADER FOR QUICK ACCESS DATA SPARK GENERATOR VOLTAGE

OUTSIDE MODEL

Next: &nff, f1090

DIAGNOSTICS LITE

DIAGNOSIS RELIES ON

Next: &nff, !f1094

HEADER FOR QUICK ACCESS DATA RETURN THERMISTOR

OUTSIDE MODEL

Next: &nff, f1096

HEADER FOR QUICK ACCESS DATA FAN VOLTAGE (MAINS)

OUTSIDE MODEL

Next: &nff, f1102

HEADER FOR QUICK ACCESS DATA PUMP VOLTAGE

OUTSIDE MODEL

Next: &nff, f1111

F6

OUTSIDE MODEL

Next: &nff, f1161

HEADER FOR PCB COMPONENT ON STARTUP

OUTSIDE MODEL

Next: &nff, !f1191

INFORMATION OUTDOOR SENSOR REMEDIAL KIT IDEAL INSTRUCTIONS

Next: &nff, f1547

INFORMATION OUTDOOR SENSOR AFTER AFQ INSTRUCTIONS

Next: &nff, !f1230

OBSERVATION PUMP AND FAN OVER RUN

Next: &1554, !f1258

FA

OUTSIDE MODEL

Next: &nff, f1334

OBSERVATION DISPLAY OPERATES

{ALLDEMANDOFF}
SELECTOR SWITCH TO IN ON POSITION

Next: &3, ?1353, ?1377

HEADER FOR QUICK ACCESS DATA PUMP RESISTANCE (ERP)

Next: &nff, p1482

HEADER FOR QUICK ACCESS DATA OUTDOOR SENSOR

OUTSIDE MODEL

Next: &nff, f1509

OBSERVATION BOILER MODULATION

ATTACH A TEMPERATURE CLAMP TO THE FLOW PIPE AS INDICATED BY THE RED ARROW

Next: &1257, f1538

RESISTANCE OUTDOOR SENSOR

DISCONNECT PLUG X7B FROM PCB

Next: &nff, !f1546

COMBUSTION TEST MAX AND MINIMUM

TURN THE CH TEMP CONTROL KNOB TO THE 10 O'CLOCK POSITION

Next: &nff, ?1555, ?1557, ?1559

INFORMATION SETTING BOILER TO MAXIMUM OR MINIMUM OUTPUT

TURN THE CH TEMP CONTROL KNOB TO THE 10 O'CLOCK POSITION

Next: &nff, !f1591

FAN RUNS CH DEMAND

KNOB WHITE- POTENTIOMETERS

Next: End

F2 NO CONTROL VOLTAGE

KIT - PCB - PRIMARY

Next: End

F3 FAN CONTROL

HARNESS - WIRING - SELV / LOW VOLTAGE

Next: End

CODE F4

THERMISTOR - NO FLOW

Next: End

CODE F5

CONTROL - THERMISTOR (RETURN)

Next: End

CODE F7

Next: End

F9

Z DIRECTION

Next: End

BLANK FOR QUICK ACCESS DATA AND INFORMATION

Z DIRECTION

Next: End

OUT OF RANGE (QADAI)

THERMISTOR - NO FLOW

Next: End

NO POWER TO GAS VALVE (QADAI)

KIT - PCB - PRIMARY

Next: End

RESISTANCE WRONG (QADAI)

KIT - GAS VALVE

Next: End

NO FAN AT START UP (QADAI)

KIT - PCB - PRIMARY

Next: End

RESISTANCE INCORRECT (QADAI)

KIT - FAN

Next: End

RESISTANCE INCORRECT (QADAI) PUMP

KIT - PUMP HEAD

Next: End

RESISTANCE WRONG QADAI

UNIT - IGNITOR

Next: End

NO VOLTAGE TO SPARK GENERATOR (QADAI)

KIT - PCB - PRIMARY

Next: End

BLANK FOR DIAGNOSICS LITE

Z DIRECTION

Next: End

OUT OF RANGE (QADAI)

CONTROL - THERMISTOR (RETURN)

Next: End

NO VOLTAGE TO PUMP (QADAI)

KIT - PCB - PRIMARY

Next: End

FURTHER INVESTIGATION FUSE

UNIT - IGNITOR

Next: End

OPERATION CH - RADS TOO HOT

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

OPERATION CH - REMAINS LIT RADS DO NOT HEAT

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

BURNER IGNITES AND ESTABLISHES - NO SPARKING

THERMISTOR - NO FLOW

Next: End

BURNER IGNITES AND ESTABLISHES - NO SPARKING

CONTROL - THERMISTOR (RETURN)

Next: End

RESTRICTED OPERATION DHW DHW COOL RADS COLD NO CH DEMAND LPG

KIT - SIPHON TRAP

Next: End

MECHANICAL OPERATION DHW DHW COOL RADS COLD NO CH DEMAND LPG

KIT - FAN

Next: End

POOR GAS RATE LPG

KIT - BURNER

Next: End

RESTRICTED OPERATION DHW DHW DOOL RADS COLD NO CH DEMAND LPG

KIT - HEAT ENGINE

Next: End

RESTRICTED OPERATION DHW DHW COOL RADS COLD NO CH DEMAND LPG

FLUE

Next: End

OPERATION CH - BOILER COOL RADS COOL - LPG

INJECTOR ASSEMBLY

Next: End

OPERATION CH - BOILER COOL RADS COOL

INJECTOR ASSEMBLY

Next: End

OPERATION CH - BOILER COOL RADS COOL

GAS INLET PRESSURE

Next: End

STUCK ON STARTUP

KIT - PCB - PRIMARY

Next: End

F3 - FAN HARNESS

HARNESS - MAINS VOLTAGE

Next: End

F3 - NEUTRAL FAULT

HARNESS - MAINS VOLTAGE

Next: End

FAN NEUTRAL FAULT (QADAI)

HARNESS - MAINS VOLTAGE

Next: End

PUMP SU FAN RUNS SPARKING DOES NOT OCCURTEMP

KIT - PCB - PRIMARY

Next: End

OPERATION PUMP & FAN RUNS - OPEN CIRCUIT TO PUMP

HARNESS - MAINS VOLTAGE

Next: End

L1 - NO VOLTAGE TO PUMP

KIT - PCB - PRIMARY

Next: End

L1 - OPEN CIRCUIT TO PUMP

HARNESS - MAINS VOLTAGE

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO FAN

HARNESS - MAINS VOLTAGE

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO FAN - NEUTRAL FAULT

HARNESS - MAINS VOLTAGE

Next: End

OUTDOOR SENSOR PREMADE

Z DIRECTION

Next: End

BURNER DOES NOT ESTABLISH L6

HARNESS - DETECTION LEAD

Next: End

GAS VALVE FURTHER INVESTIGATION FUSE

HARNESS - MAINS VOLTAGE

Next: End

OBSERVATION PUMP AND FAN RUN - STAYS ON - EXTERNAL CONTROLS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO IGNITION - TO GAS VALVE

HARNESS - MAINS VOLTAGE

Next: End

OBSERVATION PUMP AND FAN RUN - IGNORING DEMAND

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

NO OVERRUNS

KIT - PCB - PRIMARY

Next: End

FAN RUNS CH DEMAND 1

Next: End

FA

KIT - PUMP HEAD

Next: End

FAULT CODE FA

CONTROL - THERMISTOR (RETURN)

Next: End

FAULT CODE FA

THERMISTOR - NO FLOW

Next: End

BLOWN STAND BY MODE AT POWER UP

FUSE - MAINS

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO DISPLAY - FROM BLOCK TO PCB

HARNESS - MAINS VOLTAGE

Next: End

BLOWN STANDBY MODE AT POWER UP

FUSE- PCB

Next: End

PCB DAMAGED

KIT - PCB - PRIMARY + LEAK OR SHORT

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO VOLTAGE TO DISPLAY

KIT - PCB - PRIMARY

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO DISPLAY

HARNESS - CUI TO PRIMARY

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO VOLTAGE TO DISPLAY PARTIAL DISPLAY

KIT - PCB - PRIMARY

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO DISPLAY PARTIAL DISPLAY

HARNESS - CUI TO PRIMARY

Next: End

PUMP SU FAN RUNS SPARKING DOES NOT OCCURTEMP SELF CHECK

KIT - PCB - PRIMARY

Next: End

OPERATION PUMP & FAN RUNS - OPEN CIRCUIT TO PUMP SELF CHECK

HARNESS - MAINS VOLTAGE

Next: End

BURNER IGNITES BUT BAFFLES OUT OR IS NOISY

KIT - SIPHON TRAP

Next: End

SPARK BUT NOT LIGHTING

FLUE

Next: End

BURNER DOES NOT IGNITE - BAFFLES

GAS INLET PRESSURE

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

POWER UP

HARNESS - MAINS VOLTAGE

Next: End

BURNER BAFFLES OR NOISY

INJECTOR ASSEMBLY

Next: End

PUMP RUNS DHW DEMAND

HARNESS - MAINS VOLTAGE

Next: End

FURTHER INVESTIGATION FUSE

KIT - PUMP HEAD

Next: End

NEW MODELBLOCKED OR DAMAGED

FLUE

Next: End

FAN FURTHER INVESTIGATION FUSE ERP PUMP

KIT - FAN

Next: End

GAS VALVE FURTHER INVESTIGATION FUSE ERP PUMP

HARNESS - MAINS VOLTAGE

Next: End

FURTHER INVESTIGATION FUSE ERP PUMP

UNIT - IGNITOR

Next: End

MECHANICAL PHYSICAL OPERATION

KIT - FAN

Next: End

L1

HARNESS - MAINS VOLTAGE

Next: End

INCORRECT RESISTANCE ERP (QADAI)

KIT - PUMP HEAD

Next: End

OBSERVATION PUMP & FAN RUNS - FAN DOES NOT RUN REMEDIAL KIT

OUTDOOR SENSOR

Next: End

FAN RUNS DHW DEMAND - NO FAN

KIT - PCB - PRIMARY

Next: End

F6 -REMEDIAL KIT

OUTDOOR SENSOR

Next: End

F6

KIT - PCB - PRIMARY

Next: End

FAULT CODES 3

Z DIRECTION

Next: End

OPERATION CH - REMAINS LIT BUT RADS ONLY WARM - LPG - REMEDIAL KIT

OUTDOOR SENSOR

Next: End

OPERATION CH - REMAINS LIT BUT RADS ONLY WARM - REMEDIAL KIT

OUTDOOR SENSOR

Next: End

OPERATION CH - REMAINS LIT BUT RADS ONLY WARM - NO FAN

KIT - PCB - PRIMARY

Next: End

QADAI

OUTDOOR SENSOR (RESISTANCE)

Next: End

FAN RUNS DHW DEMAND - NO FANREMAINS ON 0

KIT - PCB - PRIMARY

Next: End

OBSERVATION PUMP & FAN RUNS - NO FAN - OUTDOOR SENSOR REMEDIALREMAINS ON 0

KIT - PCB - PRIMARY

Next: End

OPERATION DHW UNSATISFACTORY

CYLINDER THERMOSTAT

Next: End

OPERATION DHW UNSATISFACTORY

TIMER

Next: End

OPERATION DHW OBSERVATION PUMP & FAN RUNS - FAN DOES NOT RUN REMEDIAL KIT

OUTDOOR SENSOR

Next: End

DHW OPERATION

Next: End

OPERATION DHW NO DEMAND

CYLINDER THERMOSTAT

Next: End

OPERATION DHW NO DEMAND

TIMER

Next: End

OPERATION DHW OBSERVATION PUMP & FAN RUNS - FAN DOES NOT RUN REMEDIAL KIT NOT RECOGNISING

OUTDOOR SENSOR

Next: End

OBSERVATION BOILER MODULATIONFAN RUNS DHW

THERMISTOR - NO FLOW

Next: End

OBSERVATION BOILER MODULATION

CONTROL - THERMISTOR (RETURN)

Next: End

OBSERVATION BOILER MODULATION#

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

OUTSIDE MODEL

OUTDOOR SENSOR

Next: End

OUTDOOR REMEDIAL 2

Z DIRECTION

Next: End

NEW MODEL FLUEWAYS

KIT - HEAT ENGINE

Next: End

OUTDOOR REMEDIAL 3

Z DIRECTION

Next: End

FURTHER INVESTIGATION FUSE ERP PUMP

KIT - PUMP HEAD

Next: End

LOW WHEN RUNNING ON MAX RATE

GAS INLET PRESSURE

Next: End

RECTIFICATION ELECTRODE NOT ESTABLISHING DROPPING OUT AT MINIMUM

ELECTRODE - DETECTION

Next: End

LOW CAUSING COMBUSTION ISSUES

GAS INLET PRESSURE

Next: End

IGNITES BUT BAFFLES OR NOISY

KIT - BURNER

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

GAS INLET PRESSURE

Next: End

INFORMATION SET BOILER MAX MIN

Z DIRECTION

Next: End

RESTRICTED AFFECTING FGA

KIT - SIPHON TRAP

Next: End

RESTRICTED AFFECTING FGA

INJECTOR ASSEMBLY

Next: End

COMBUSTION TEST FAILED

KIT - FAN

Next: End

CAUSING POOR COMBUSTION FGA

KIT - BURNER

Next: End

RESTRICTED CAUSING FGA FAIL

KIT - HEAT ENGINE

Next: End

FIRES NO DEMAND

CONTROL - THERMISTOR (RETURN)

Next: End

BURNERIGNITES

HARNESS - DETECTION LEAD

Next: End

COMBUSTION TEST

FLUE

Next: End

PUMP RUNS 5 SECONDS F1

HARNESS - WIRING - SELV / LOW VOLTAGE

Next: End

BLOCKED

TRANSDUCER - WATER PRESSURE (BLOCKED)

Next: End

BURNER IGNITES

ELECTRODE - DETECTION

Next: End

NO SUPPLY TO PRESSURE SENSOR

KIT - PCB - PRIMARY

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

KIT - BURNER

Next: End

DOES NOT ESTABLISH

ELECTRODE - IGNITION

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

FLUE

Next: End

SPARKING OCCURS BURNER DOES NOT IGNITE

HARNESS - MAINS VOLTAGE

Next: End

SPARKING OCCURS BURNER DOES NOT IGNITE

LEAD - IGNITION

Next: End

BURNER DOES NOT IGNITE

KIT - SIPHON TRAP

Next: End

VOLTAGE TO GAS VALVE

KIT - PCB - PRIMARY

Next: End

BURNER DOES NOT IGNITE

INJECTOR ASSEMBLY

Next: End

BURNER DOES NOT IGNITE

KIT - BURNER

Next: End

BURNER DOES NOT IGNITE

KIT - HEAT ENGINE

Next: End

CASE REMOVAL

Z DIRECTION

Next: End

NEW MODELBLOCKED OR DAMAGED

KIT - BURNER

Next: End

SPARKING BUT NO LIGHTING

KIT - HEAT ENGINE

Next: End

POWER UP - FIRING NO DEMAND

Next: End

HOT WATER TOO HOT

THERMISTOR - NO FLOW

Next: End

HOT WATER TOO HOT

CONTROL - THERMISTOR (RETURN)

Next: End

CH BOILER TEMP LOW SYSTEM TEMP LOW

KNOB WHITE- POTENTIOMETERS

Next: End

BOILER TO TEMP RADS COOL

KIT - PUMP HEAD

Next: End

OPERATION CH UP TO TEMP RADS COOL

PACK - CH FLOW / RETURN

Next: End

NO FAN AT START UP

KIT - PCB - PRIMARY

Next: End

OPERATION CH UP TO TEMP RADS COOL

Next: End

NO FAN AT START UP FAN CONTROL

HARNESS - WIRING - SELV / LOW VOLTAGE

Next: End

OPERATION CH - UP TO TEMP RADS COLD

KIT - BYPASS

Next: End

UNDER PRESSURE

KIT - EXPANSION VESSEL

Next: End

OPERATION CH - DOES NOT REACH TEMP - LPG

GAS INLET PRESSURE

Next: End

CALIBRATION LOW BOILER TEMP LOW SYSTEM TEMP LOW LPG

THERMISTOR - NO FLOW

Next: End

CALIBRATION LOW BOILER TEMP LOW SYSTEM TEMP LOW LPG

CONTROL - THERMISTOR (RETURN)

Next: End

FIRES WITH NO DEMAND

FROST PROTECTION (INTERNAL)

Next: End

RESTRICTED OPERATION DHW DHW COOL RADS COLD NO CH DEMAND

KIT - SIPHON TRAP

Next: End

MECHANICAL OPERATION DHW DHW COOL RADS COLD NO CH DEMAND

KIT - FAN

Next: End

POOR GAS RATE

KIT - BURNER

Next: End

RESTRICTED OPERATION DHW DHW DOOL RADS COLD NO CH DEMAND

KIT - HEAT ENGINE

Next: End

RESTRICTED OPERATION DHW DHW COOL RADS COLD NO CH DEMAND

FLUE

Next: End

ON WITH NO DEMAND - FROST

THERMISTOR - NO FLOW

Next: End

CALIBRATION LOW BOILER TEMP LOW SYSTEM TEMP LOW

THERMISTOR - NO FLOW

Next: End

CALIBRATION LOW BOILER TEMP LOW SYSTEM TEMP LOW

CONTROL - THERMISTOR (RETURN)

Next: End

FOR TYPE DIAG PROCEDURE

Z DIRECTION

Next: End

OBSERVATION FAN RUNS - DOES NOT RUN

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

OPERATION CH - REMAINS LIT RADS DO NOT HEAT - LPG

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

L1 - OVERHEAT FAULT

THERMISTOR - NO FLOW

Next: End

L1 - OVERHEAT FAULT

CONTROL - THERMISTOR (RETURN)

Next: End

L1

PACK - CH FLOW / RETURN

Next: End

L1

Next: End

L1 - OUT OF CALIB

THERMISTOR - NO FLOW

Next: End

L1 - OUT OF CALIB

CONTROL - THERMISTOR (RETURN)

Next: End

L1 RUNNING SLOW

KIT - PUMP HEAD

Next: End

L1

SYSTEM RESTRICTION OR BLOCKAGE

Next: End

FAN RUNS DHW

THERMISTOR - NO FLOW

Next: End

L2 / F2

Z DIRECTION

Next: End

L5

KIT - PCB - PRIMARY

Next: End

BURNER DOES NOT ESTABLISH L6

ELECTRODE - DETECTION

Next: End

CODE L6

KIT - GAS VALVE

Next: End

FAN RUNS DHW

CONTROL - THERMISTOR (RETURN)

Next: End

L6 FAULT CODE

KIT - PCB - PRIMARY

Next: End

FAN FURTHER INVESTIGATION FUSE

KIT - FAN

Next: End

FAULT CODE CO OR C2

KIT - BCC CARD

Next: End

F2 NO MAINS TO FAN

KIT - PCB - PRIMARY

Next: End

F2 OVER 15V ON N

KIT - FAN

Next: End

F2 NO FAN AT START UP

KIT - FAN

Next: End

CODE F4

KIT - PCB - PRIMARY

Next: End

CODE F4

HARNESS - WIRING - SELV / LOW VOLTAGE

Next: End

CODE F5

KIT - PCB - PRIMARY

Next: End

CODE F5

HARNESS - WIRING - SELV / LOW VOLTAGE

Next: End

F7 CODE

KIT - PCB - PRIMARY

Next: End

F9

KIT - PCB - PRIMARY

Next: End

FLOW THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

GAS VALVE VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

GAS VALVE RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN VOLTAGE OK (LV)

RESULT AS EXPECTED

Next: End

FAN SATISFACTORY

RESULT AS EXPECTED

Next: End

PUMP SATISFACTORY

RESULT AS EXPECTED

Next: End

SPARK GENERATOR RESISTANCE

RESULT AS EXPECTED

Next: End

SPARK GENERATOR VOLTAGE

RESULT AS EXPECTED

Next: End

RETURN THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN VOLTAGE OK (MAINS)

RESULT AS EXPECTED

Next: End

F2 NO MAINS TO FAN (QADAI)

KIT - PCB - PRIMARY

Next: End

F2 OVER 15V ON N (QADAI)

KIT - FAN

Next: End

PUMP VOLTAGE (MAINS)

RESULT AS EXPECTED

Next: End

FUSE INVESTIGATION

NO FAULT - FUSE INVESTIGATION

Next: End

SPARK GEN FURTHER INVESTIGATION FUSE

HARNESS - MAINS VOLTAGE

Next: End

DHW TOO HOT

KIT - PCB - PRIMARY

Next: End

BURNER IGNITES AND ESTABLISHES - NO SPARKING

KIT - PCB - PRIMARY

Next: End

DHW COOL RADS COOL LPG

KIT - PCB - PRIMARY

Next: End

OBSERVATION PUMP FAN RUNS - DOES NOT RUN

KIT - PUMP HEAD

Next: End

L1 NOT RUNNING

KIT - PUMP HEAD

Next: End

RECTIFICATION LEAD L6

HARNESS - MAINS VOLTAGE

Next: End

FURTHER INVESTIGATION FUSE

KIT - GAS VALVE

Next: End

OPERATION CH - UP TO TEMP RADS COOLD

SYSTEM RESTRICTION OR BLOCKAGE

Next: End

OPERATION CH - REMAINS LIT RADS ONLY WARM

KIT - PRESSURE GAUGE

Next: End

OPERATION CH - REMAINS LIT RADS ONLY WARM

SYSTEM PRESSURE

Next: End

FAULT CODE FA

KIT - PCB - PRIMARY

Next: End

SUPPLY FAULT AT POWER UP

Next: End

FURTHER INVESTIGATION F1

Z DIRECTION

Next: End

FURTHER IN VESTIGATION F2

Z DIRECTION

Next: End

POWER OK PCB DEAD

KIT - PCB - PRIMARY

Next: End

INTEGRAL FUSE FATIGUED

KIT - PCB - PRIMARY

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO DISPLAY

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

OBSERVATION DISPLAY AND SELF CHECK - NO DISPLAY PARTIAL DISPLAY

KIT - CUI BOARD 2 POTENTIOMETER

Next: End

OBSERVATION PUMP FAN RUNS - DOES NOT RUN SELF CHECK

KIT - PUMP HEAD

Next: End

FAULT CODES 2

Z DIRECTION

Next: End

FAN RUNS PUMP DOES NOT - ERP

KIT - PUMP HEAD

Next: End

PUMP RUNS DHW DEMAND ERP PUMP

KIT - PUMP HEAD

Next: End

PUMP FURTHER INVESTIGATION FUSE

HARNESS - MAINS VOLTAGE

Next: End

FAN FURTHER INVESTIGATION FUSE ERP PUMP

HARNESS - MAINS VOLTAGE

Next: End

FURTHER INVESTIGATION FUSE ERP PUMP

KIT - GAS VALVE

Next: End

FUSE INVESTIGATION ERP PUMP

NO FAULT - FUSE INVESTIGATION

Next: End

SPARK GEN FURTHER INVESTIGATION FUSE ERP PUMP

HARNESS - MAINS VOLTAGE

Next: End

L1 NOT RUNNING ERP

KIT - PUMP HEAD

Next: End

ERP PUMP RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

OBSERVATION PUMP & FAN RUNS - NO FAN - OUTDOOR SENSOR REMEDIAL

KIT - PCB - PRIMARY

Next: End

F6 - OUTDOOR SENSOR REMEDIAL

KIT - PCB - PRIMARY

Next: End

OPERATION CH - DOES NOT REACH TEMP - REMEDIAL KIT

Z DIRECTION

Next: End

OPERATION CH - REMAINS LIT BUT RADS ONLY WARM - OUTDOOR SENSOR REMEDIAL

KIT - PCB - PRIMARY

Next: End

BURNER DOES NOT IGNITELEAKING POCBAFFLES

MANIFOLD - FLUE

Next: End

OUTDOOR SENSOR

RESULT AS EXPECTED

Next: End

OBSERVATION PUMP FAN RUNS - REMEDIAL KITREMAINS ON 0

OUTDOOR SENSOR

Next: End

OPERATION DHW UNSATISFACTORY

WIRING FAULT

Next: End

DHW OPERATION 2

Next: End

BURNER DOES NOT IGNITELEAKING POCBAFFLES

KIT - REPLACEMENT - SUMP COVER

Next: End

OPERATION DHW NO DEMAND

WIRING FAULT

Next: End

DHW OPERATION WEATHER COMP

Next: End

OBSERVATION BOILER MODULATION

KIT - PCB - PRIMARY

Next: End

OUTDOOR SENSOR REMEDIAL

Z DIRECTION

Next: End

FUSE INVESTIGATION

HARNESS - MAINS VOLTAGE

Next: End

IGNITES BUT BAFLLES OR NOISY

KIT - GAS VALVE

Next: End

WRONG MIX ON MAXIMUM

KIT - GAS VALVE

Next: End

WRONG MIX ON MINIMUM

KIT - GAS VALVE

Next: End

COMBUSTION TEST FAILED

MANIFOLD - FLUE

Next: End

COMBUSTION TEST FAILED

KIT - REPLACEMENT - SUMP COVER

Next: End

WRONG MIX ON MAX AND MIN

KIT - GAS VALVE

Next: End

POWER UP - FIRING WITH NO FROST DEMAND

KIT - PCB - PRIMARY

Next: End

BURNER IGNITES AND ESTABLISHES - FLAME SENSE

HARNESS - MAINS VOLTAGE

Next: End

PUMP RUNS FOR 5 SECS F1

TRANSDUCER - WATER PRESSURE

Next: End

FLAME SENSE BURNER IGNITES DOES NOT ESTABLISH

KIT - PCB - PRIMARY

Next: End

SPARKING OCCURS BURNER DOES NOT IGNITE

UNIT - IGNITOR

Next: End

POOR SUPPLY

GAS INLET PRESSURE

Next: End

NOT OPENING - MECHANICAL

KIT - GAS VALVE

Next: End

SPARK BUT NOT LIGHTING

KIT - GAS VALVE

Next: End

BURNER DOES NOT IGNITELEAKING POC

KIT - REPLACEMENT - SUMP COVER

Next: End

BURNER DOES NOT IGNITELEAKING POC

MANIFOLD - FLUE

Next: End

SPARKING BUT NOT LIGHTING

ELECTRODE - IGNITION

Next: End

SPARK BUT NOT LIGHTING

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

KIT - GAS VALVE

Next: End

ON WITH NO DEMAND - FROST

KIT - PCB - PRIMARY

Next: End

NO MAINS TO FAN AT START UP

KIT - PCB - PRIMARY

Next: End

OPERATION CH UO TEMP RADS COOL

KIT - PRESSURE GAUGE

Next: End

OPERATION CH

SYSTEM PRESSURE

Next: End

ELECTRICAL OVER 15V ON N

KIT - FAN

Next: End

NO FAN AT START UP

KIT - FAN

Next: End

OPERATION CH -

KIT - PIPE - EXPANSION VESSEL

Next: End

DHW COOL RADS COOL

KIT - PCB - PRIMARY

Next: End

L1 - STUCK IN FAULT

KIT - PCB - PRIMARY

Next: End

L3 NO WATER FLOW

KIT - PRESSURE GAUGE

Next: End

FAULT CODE L3

SYSTEM PRESSURE

Next: End

ALL CHECKS OK RETEST MODEL

NO FAULT - OVERHEAT / L1

Next: End

L1

KIT - REPLACEMENT - SUMP COVER

Next: End

L1

MANIFOLD - FLUE

Next: End

L1 - DOES NOT SHUT OFF

KIT - PCB - PRIMARY

Next: End

L1 - REOCCURS

KIT - REPLACEMENT - SUMP COVER

Next: End

L1 - REOCCURS

MANIFOLD - FLUE

Next: End

L1 - FAULT CODE REOCCURS

KIT - PCB - PRIMARY

Next: End

L5

Z DIRECTION

Next: End

BLANK FOR L6 FAULT CODE

Z DIRECTION

Next: End

FAN FURTHER INVESTIGATION FUSE

HARNESS - MAINS VOLTAGE

Next: End

CODE C0

KIT - PCB - PRIMARY

Next: End

PUMP RUNS FOR 5 SECS F1

KIT - PCB - PRIMARY

Next: End

F1

KIT - PRESSURE GAUGE

Next: End

F1

SYSTEM PRESSURE

Next: End

NO VOLTAGE MEASURED

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: !p1018

GREATER THAN 15VAC ON BLUE

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: p1020

NO VOLTAGE MEASURED

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: !p1105

GREATER THAN 15VAC ON BLUE

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: p1107

FAULT CODE DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION SELF CHECK AND STANDBY

Next: p13

BURNER DOES NOT IGNITE - IGNITION ISSUE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p133

SYSTEM PRESSURE OK BUT DOES NOT INCREASE

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE AND RISE

Next: !p1330

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE AND RISE

Next: !p1332

BURNER IGNITES BUT DOES NOT ESTABLISH - RECTIFICATION ISSUE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p135

NO DISPLAY SEEN

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY OPERATES

Next: p1354

BURNER IGNITES BUT BAFFLES OUT OR IS NOISY - COMBUSTION ISSUE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p137

PART OF DISPLAY NOT WORKING (8 DOES NOT INITIALLY SHOW)

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY OPERATES

Next: p1378

PUMP DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION SELF CHECK AND STANDBY

Next: p1384

FLUE MANIFOLD UNSATISFACTORY

Next: !p151

SUMP UNSATISFACTORY

Next: !p153

COMBUSTION TEST FAILED

CHARACTERISTIC TEST FROM COMBUSTION TEST MAX AND MINIMUM

Next: p1556

BURNER DROPS OUT ON MINIMUM RATE

CHARACTERISTIC TEST FROM COMBUSTION TEST MAX AND MINIMUM

Next: p1558

BURNER DROPS OUT ON MAXIMUM RATE

CHARACTERISTIC TEST FROM COMBUSTION TEST MAX AND MINIMUM

Next: p1560

FLUE MANIFOLD UNSATISFACTORY

Next: !p1607

SUMP UNSATISFACTORY

Next: !p1609

INLET PRESSURE DOES NOT CHANGE

CHARACTERISTIC TEST FROM PRESSURE GAS INLET (BLIP TEST)

Next: p185

INLET PRESSURE DROPS AWAY

CHARACTERISTIC TEST FROM PRESSURE GAS INLET (BLIP TEST)

Next: !p187

SUMP UNSATISFACTORY

Next: !p205

FLUE MANIFOLD UNSATISFACTORY

Next: !p207

SPARK ELECTRODE IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION ELECTRODE SPARK GAP

Next: !p213

SPARK GAP INCORRECT

CHARACTERISTIC TEST FROM INSPECTION ELECTRODE SPARK GAP

Next: !p215

RADIATORS TOO HOT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p234

NO VOLTAGE MEASURED

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: !p39

BOILER REMAINS LIT BUT RADIATORS ONLY GET WARM

CHARACTERISTIC TEST FROM OPERATION CH

Next: p1259

GREATER THAN 15VAC ON BLUE

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: p41

BOILER REACHES TEMPERATURE BUT SYSTEM DOES NOT HEAT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p411

SYSTEM PRESSURE OK BUT DOES NOT INCREASE

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE AND RISE

Next: !p415

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE AND RISE

Next: !p417

SYSTEM PRESSURE RISE EXCESSIVE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p520

FAN DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION SELF CHECK AND STANDBY

Next: p7

GAS RATE LOW

Next: p659

UNABLE TO GAS RATE (EG LPG)

Next: p661

DISPLAY CHANGES TO C BUT PUMP DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION PUMP & FAN RUNS

Next: p1195

DISPLAY CHANGES TO C BUT FAN NEVER PAUSES

CHARACTERISTIC TEST FROM OBSERVATION PUMP & FAN RUNS

Next: p77

DISPLAY REMAINS ON 0

CHARACTERISTIC TEST FROM OBSERVATION PUMP & FAN RUNS

Next: p100

BOILER FIRES OR PUMP CONTINUES TO RUN WITH NO HEATING OR HOT WATER DEMAND

CHARACTERISTIC TEST FROM OBSERVATION SELF CHECK AND STANDBY

Next: p9

DHW OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p1517

DHW DEMAND NOT RECOGNISED

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p1526

SYSTEM PRESSURE OK BUT GAUGE DOES NOT INCREASE

CHARACTERISTIC TEST FROM GAS USAGE

Next: !p818

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE AND RISE

Next: !p820

SUMP UNSATISFACTORY

Next: !p911

FLUE MANIFOLD UNSATISFACTORY

Next: !p913

FLOW TEMPERATURE EXCEEDS 80 DEGREES BUT BOILER DOES NOT MODULATE / SHUT OFF

CHARACTERISTIC TEST FROM OBSERVATION BOILER MODULATION (OVERHEAT)

Next: !p923

BOILER GOES TO OVERHEAT BEFORE REACHING TEMPERATURE

CHARACTERISTIC TEST FROM OBSERVATION BOILER MODULATION (OVERHEAT)

Next: p926

SUMP UNSATISFACTORY

Next: !p929

FLUE MANIFOLD UNSATISFACTORY

Next: !p931

SYSTEM PRESSURE OK BUT GAUGE DOES NOT INCREASE

CHARACTERISTIC TEST FROM GAS USAGE

Next: !p986

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION SYSTEM PRESSURE AND RISE

Next: !p989

15/12/2023 11:49:34 2310_1_50_1 22/02/2024 10:48:19

13/02/2024 07:56:29

Next: End

VOLTAGE FAN (AT PCB) - MAINS

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: p1016, ?1017, ?1019

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p1031, f1032

RESISTANCE SENSOR NO FLOW / PRIMARY

REMOVE THE ELECTRICA

Next: !p1033, !f1034

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p1037, f1038

RESISTANCE SENSOR RETURN

DISCONNECT PLUG FROM RETURN SENSOR

Next: !p1039, !f1040

VOLTAGE MAINS INPUT - F7 FAULT CODE

GAIN ACCESS TO INCOMING MAINS TERMINAL BLOCK (USE INSULATION MAT AS NECESSARY)

Next: !p1043, !f1044

OBSERVATION RESET BOILER F9

Next: !p1047, !f1048

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p1053, !f1054

VOLTAGE GAS VALVE AT PCB

Next: !p1057, !f1058

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X2A FROM THE PCB

Next: !p1061, !f1062

VOLTAGE FAN CONTROL (AT PCB)

REMOVE DC ELECTRICAL CONNECTOR FROM FAN ASSEMBLY (5 PIN CONNECTOR) & MAKE SAFE

Next: !p1067, !f1068

RESISTANCE FAN

DISCONNECT THE 3 PIN POWER CONNECTOR FROM THE FAN

Next: !p1075, !f1076

RESISTANCE PUMP (STANDARD)

UNPLUG THE HARNESS FROM THE SIDE OF THE PUMP AND REMOVE THE PUMPS ELECTRICAL COVER

Next: !p1079, !f1080

RESISTANCE SPARK GENERATOR

REMOVE THE MAINS CONNECTOR FROM THE SPARK GENERATOR

Next: !p1087, !f1088

VOLTAGE SPARK GENERATOR INPUT (AT PCB)

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: !p1091, !f1092

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p1097, !f1098

VOLTAGE FAN (AT PCB) - MAINS

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: !p1103, ?1104, ?1106

VOLTAGE PUMP AT PCB

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: !p1112, !f1113

RESISTANCE SPARK GENERATOR

REMOVE THE MAINS CONNECTOR FROM THE SPARK GENERATOR

Next: !p1126, !f1127

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p1133, !f1134

OBSERVATION IS WEATHER COMPENSATION FITTED

Next: p1491, !f1494

VOLTAGE PUMP AT PCB

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: p1468, !f1202

PUMP LIMPET TEST

Next: p1335, !f1336

VOLTAGE MAINS POWER SUPPLY AT TERMINAL BLOCK

GAIN ACCESS TO INCOMING MAINS TERMINAL BLOCK (USE INSULATION MAT AS NECESSARY)

Next: p1357, f1358

RESISTANCE FUSE F1 (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: !p1359, f1360

3AMP FUSE FAULTY

Next: !p1361, !f1362

PCB FUSE FAULTY

Next: !p1367, !f1368

INFORMATION INTEGRAL FUSE

Next: !p1371, !f1372

RESISTANCE HARNESS PUMP (ERP)

DISCONNECT MAINS VOL

Next: !p1422, !f1423

RESISTANCE HARNESS PUMP (ERP)

DISCONNECT MAINS VOL

Next: !p1429, !f1430

RESISTANCE PUMP (STANDARD)

UNPLUG THE HARNESS FROM THE SIDE OF THE PUMP AND REMOVE THE PUMPS ELECTRICAL COVER

Next: !p1446, !f1447

RESISTANCE PUMP AND HARNESS (ERP)

REMOVE CONNECTOR X1C FROM THE PCB

Next: p1449, f1465

RESISTANCE FAN

DISCONNECT THE 3 PIN POWER CONNECTOR FROM THE FAN

Next: !p1455, !f1456

RESISTANCE HARNESS GAS VALVE

REMOVE CONNECTOR FROM GAS VALVE

Next: !p1459, !f1460

RESISTANCE SPARK GENERATOR

REMOVE THE MAINS CONNECTOR FROM THE SPARK GENERATOR

Next: !p1463, !f1464

RESISTANCE PUMP (ERP)

UNPLUG THE MAINS HARNESS (LEFT HAND SIDE) FROM THE PUMP

Next: !p1552, !f1553

RESISTANCE HARNESS PUMP (ERP)

DISCONNECT MAINS VOL

Next: !p1479, !f1480

OBSERVATION DISCONNECT OUTDOOR SENSOR - REMEDIAL KIT (CH OP)

DISCONNECT CONNECTOR X7B FOR OUTDOOR SENSOR

Next: !p1501, !f1502

RESISTANCE OUTDOOR SENSOR (QADAI)

DISCONNECT PLUG X7B FROM PCB

Next: !p1510, !f1511

RESISTANCE CYLINDER THERMOSTAT

DISCONNECT THE COMMON WIRE FROM THE THERMOSTAT
TURN CYLINDER THERMOSTAT TO ITS MAX SETTING

Next: p1520, !f1521

RESISTANCE CYLINDER THERMOSTAT

DISCONNECT THE COMMON WIRE FROM THE THERMOSTAT
TURN CYLINDER THERMOSTAT TO ITS MAX SETTING

Next: p1531, !f1532

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p1539, !f1540

INFORMATION S PLAN WIRING DIAGRAM

Next: p1548, !f1549

RESISTANCE DETECTION LEAD

DISCONNECT FLAME SEN

Next: !p162, !f163

VOLTAGE LOW WATER PRESSURE SENSOR (SUPPLY)

Next: p1645, !f1650

VOLTAGE SPARK GENERATOR INPUT (AT PCB)

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: p174, f1132

RESISTANCE HARNESS GAS VALVE

REMOVE CONNECTOR FROM GAS VALVE

Next: !p192, !f1251

OBSERVATION AMBIENT TEMPERATURE

Next: p67, !f68

OBSERVATION BOILER RESET - OVERHEAT

ENSURE BOILER IS COOL AND NO DEMANDS ARE PRESENT

Next: p809, f810

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p811, !f812

OBSERVATION POWER OFF DOES BOILER RESET

WAIT APPROXIMATELY 15 SECONDS

Next: !p937, !f938

RESISTANCE DETECTION LEAD AND HARNESS

DISCONNECT FLAME SENSE LEAD FROM THE ELECTRODE
REMOVE CONNECTOR X2B FROM THE PCB

Next: p941, f942

RESISTANCE DETECTION LEAD

DISCONNECT FLAME SEN

Next: !p1244, !f1245

OBSERVATION PUMP TYPE

Next: p1431, f1448

RESISTANCE FAN

DISCONNECT THE 3 PIN POWER CONNECTOR FROM THE FAN

Next: !p959, !f960

RESISTANCE HARNESS GAS VALVE

REMOVE CONNECTOR FROM GAS VALVE

Next: !p1248, !f1249

INFORMATION - RECENTLY REPLACED PCB

Next: !p975, !f976

INSPECTION SYSTEM PRESSURE AND RISE

Next: p979, ?985, ?987

INSPECTION SELECTOR SWITCH KNOB

Next: p101, !f102

VOLTAGE EXTERNAL CONTROLS

GAIN ACCESS TO THE BOILERS MAIN TERMINAL STRIP

Next: p124, !f128

VOLTAGE FAN CONTROL (AT PCB)

REMOVE DC ELECTRICAL CONNECTOR FROM FAN ASSEMBLY (5 PIN CONNECTOR) & MAKE SAFE

Next: p1023, !f1024

RESISTANCE HARNESS FAN POWER

DISCONNECT MAINS VOLTAGE PLUG FROM FAN (3 PIN CONNECTOR)

Next: !p1021, !f1193

RESISTANCE HARNESS FAN CONTROL

REMOVE LOW VOLTAGE CONNECTOR FROM FAN

Next: p1025, !f1026

RESISTANCE HARNESS FAN POWER

DISCONNECT MAINS VOLTAGE PLUG FROM FAN (3 PIN CONNECTOR)

Next: !p1027, !f1192

RESISTANCE HARNESS FAN POWER

DISCONNECT MAINS VOLTAGE PLUG FROM FAN (3 PIN CONNECTOR)

Next: !p1108, !f1194

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE CONNECTOR X2B FROM THE PCB

Next: !p1124, f1125

RESISTANCE POTENTIOMETER

REMOVE THE MAIN PCB TO GAIN ACCESS TO THE DISPLAY PCB

Next: !p1130, !f1129

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p1135, !f1136

OBSERVATION IS WEATHER COMPENSATION FITTED

Next: p1486, !f1489

OBSERVATION IS WEATHER COMPENSATION FITTED

Next: p1504, !f1507

INSPECTION INJECTOR

REMOVE GAS INJECTOR FROM THE FAN VENTURI

Next: p1172, !f1185

INSPECTION CONDENSATE

Next: p1174, !f1175

INSPECTION FAN MECHANICAL

REMOVE THE FAN

Next: p1176, !f1177

INSPECTION BURNER

REMOVE THE BURNER

Next: p1178, !f1179

INSPECTION HEAT EXCHANGER (FLUE WAYS)

REMOVE THE BURNER FROM THE BOILER

Next: p1180, !f1181

INSPECTION FLUE

Next: !p1182, !f1183

VOLTAGE PUMP AT PCB

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: p1424, !f1197

RESISTANCE HARNESS PUMP (STANDARD)

GAIN ACCESS TO PCB
REMOVE CONNECTOR FROM PUMP

Next: !p1198, !f1199

RESISTANCE HARNESS PUMP (STANDARD)

GAIN ACCESS TO PCB
REMOVE CONNECTOR FROM PUMP

Next: !p1203, !f1204

VOLTAGE EXTERNAL CONTROLS AT PCB

GAIN ACCESS TO PCB (USE INSULATION MAT AS NECESSARY)

Next: p1252, !f1250

RESISTANCE SELECTOR SWITCH

REMOVE THE MAIN PCB TO GAIN ACCESS TO THE DISPLAY PCB

Next: p1512, !f1254

INSPECTION SYSTEM PRESSURE AND RISE

Next: p395, ?1329, ?1331

FAULT CODES

Next: !p14, !f15

INSPECTION SPARK OUTPUT

REMOVE THE HT LEAD F

Next: p172, f173

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p1337, !f1338

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p1341, !f1342

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p158, !f159

OBSERVATION DOES FAN OR PUMP RUN

Next: p1355, f1356

VOLTAGE DISPLAY PCB

GAIN ACCESS TO PCB (

Next: p1373, !f1374

VOLTAGE MAINS POWER SUPPLY AT PCB

GAIN ACCESS TO PCB (USE INSULATION MAT AS NECESSARY)

Next: p1363, !f1364

RESISTANCE FUSE F2 (APPLIANCE)

REMOVE FUSE FROM HOLDER

Next: p1365, f1366

RESISTANCE PCB INTEGRAL FUSE

REMOVE RIBBON CONNECTOR AT BOTTOM OF PCB
UNCLIP AND FLIP THE PCB ONTO ITS BACK

Next: !p1369, f1370

INSPECTION CONDENSATE

Next: p138, !f139

RESISTANCE HARNESS DISPLAY PCB

GAIN ACCESS TO PCB
REMOVE THE RIBBON CABLE JOINING THE TWO PCB'S

Next: !p1375, !f1376

VOLTAGE DISPLAY PCB

GAIN ACCESS TO PCB (

Next: p1379, !f1380

RESISTANCE HARNESS DISPLAY PCB

GAIN ACCESS TO PCB
REMOVE THE RIBBON CABLE JOINING THE TWO PCB'S

Next: !p1381, !f1382

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p140, !f141

VOLTAGE PUMP AT PCB (SELF CHECK)

GAIN ACCESS TO PCB (

Next: p1417, !f1386

RESISTANCE HARNESS PUMP (STANDARD)

GAIN ACCESS TO PCB
REMOVE CONNECTOR FROM PUMP

Next: !p1387, !f1388

INSPECTION FLUE

Next: p202, !f1403

INSPECTION INJECTOR

REMOVE GAS INJECTOR FROM THE FAN VENTURI

Next: p142, !f143

INSPECTION FLUE

Next: p190, !f1416

OBSERVATION PUMP TYPE

Next: p1385, f1421

INSPECTION FLUE

Next: p144, !f145

OBSERVATION PUMP TYPE

Next: p1196, f1428

RESISTANCE PUMP AND HARNESS (STANDARD)

REMOVE CONNECTOR X1C FROM THE PCB

Next: p953, f1445

INSPECTION FAN MECHANICAL

REMOVE THE FAN

Next: p146, !f147

RESISTANCE FAN AND MAINS HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p1453, f1454

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X2A FROM THE PCB

Next: p1457, f1458

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE CONNECTOR X2B FROM THE PCB

Next: !p1461, f1462

INSPECTION SUMP AND FLUE MANIFOLD

REMOVE SUMP INSPECTION COVER

Next: p148, ?150, ?152

OBSERVATION PUMP TYPE

Next: p1201, f1476

INSPECTION HEAT EXCHANGER (FLUE WAYS)

REMOVE THE BURNER FROM THE BOILER

Next: p154, !f155

RESISTANCE PUMP (ERP)

UNPLUG THE MAINS HARNESS (LEFT HAND SIDE) FROM THE PUMP

Next: !p1483, !f1484

OBSERVATION DISCONNECT OUTDOOR SENSOR - REMEDIAL KIT (NO FAN)

DISCONNECT CONNECTOR X7B FOR OUTDOOR SENSOR

Next: !p1487, !f1488

OBSERVATION DISCONNECT OUTDOOR SENSOR - REMEDIAL KIT

DISCONNECT CONNECTOR X7B FOR OUTDOOR SENSOR

Next: !p1492, !f1493

OBSERVATION DISCONNECT OUTDOOR SENSOR - REMEDIAL KIT

DISCONNECT CONNECTOR X7B FOR OUTDOOR SENSOR

Next: !p1505, !f1506

OBSERVATION IS WEATHER COMPENSATION FITTED

Next: p1513, !f1514

OBSERVATION DISCONNECT OUTDOOR SENSOR - REMEDIAL KIT (NO DEMAND)

DISCONNECT CONNECTOR X7B FOR OUTDOOR SENSOR

Next: !p1515, !f1516

VOLTAGE SWITCH LIVE FOR OUTDOOR SENSOR

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: p1518, f1519

OBSERVATION DISCONNECT OUTDOOR SENSOR - REMEDIAL KIT (DHW)

DISCONNECT CONNECTOR X7B FOR OUTDOOR SENSOR

Next: !p1524, !f1525

VOLTAGE SWITCH LIVE FOR OUTDOOR SENSOR (HW OFF ISOLATED)

DISCONNECT HW OFF WI

Next: !p1522, !f1523

OBSERVATION IS WEATHER COMPENSATION FITTED

Next: p1527, !f1528

VOLTAGE SWITCH LIVE FOR OUTDOOR SENSOR

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: p1529, f1530

OBSERVATION DISCONNECT OUTDOOR SENSOR - REMEDIAL KIT (DHW)

DISCONNECT CONNECTOR X7B FOR OUTDOOR SENSOR

Next: !p1535, !f1536

VOLTAGE SWITCH LIVE FOR OUTDOOR SENSOR (HW OFF ISOLATED)

DISCONNECT HW OFF WI

Next: !p1533, !f1534

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p1541, !f1542

INSPECTION BURNER

REMOVE THE BURNER

Next: !p156, !f157

RESISTANCE POTENTIOMETER

REMOVE THE MAIN PCB TO GAIN ACCESS TO THE DISPLAY PCB

Next: !p1543, !f1544

INFORMATION Y PLAN WIRING DIAGRAM

Next: !p1550, !f1551

PRESSURE GAS INLET (MAXIMUM RATE)

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p1597, !f1566

INSPECTION DETECTION ELECTRODE

REMOVE FLAME DETECTION ELECTRODE FROM ITS HOUSING

Next: !p1563, !f1564

PRESSURE GAS INLET (MAXIMUM RATE)

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: !p1561, !f1562

RESISTANCE DETECTION LEAD AND HARNESS

DISCONNECT FLAME SENSE LEAD FROM THE ELECTRODE
REMOVE CONNECTOR X2B FROM THE PCB

Next: p160, f161

INSPECTION CONDENSATE

Next: p1617, !f1599

INSPECTION INJECTOR

REMOVE GAS INJECTOR FROM THE FAN VENTURI

Next: p1600, !f1601

INSPECTION DETECTION ELECTRODE

REMOVE FLAME DETECTION ELECTRODE FROM ITS HOUSING

Next: p164, !f165

INSPECTION FAN MECHANICAL

REMOVE THE FAN

Next: p1602, !f1603

INSPECTION SUMP AND FLUE MANIFOLD

REMOVE SUMP INSPECTION COVER

Next: p1604, ?1606, ?1608

INSPECTION BURNER

REMOVE THE BURNER

Next: p1610, !f1611

INSPECTION HEAT EXCHANGER (FLUE WAYS)

REMOVE THE BURNER FROM THE BOILER

Next: !p1612, !f1613

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p1615, !f1616

INSPECTION FLUE

Next: p1598, !f1633

INSPECTION BURNER

REMOVE THE BURNER

Next: p166, !f167

RESISTANCE HARNESS LOW WATER PRESSURE SENSOR

DISCONNECT CONNECTOR X8 FROM THE PCB AND THE CONNECTOR FROM THE LOW WATER PRESSURE SENSOR

Next: p1646, !f1647

INSPECT LOW WATER PRESSURE SENSOR (BLOCKAGE)

ISOLATE BOILER FROM THE HEATING CIRCUIT AND DRAIN BOILER
REMOVE LOW WATER PRESSURE SENSOR

Next: !p1648, !f1649

INSPECTION SPARK ELECTRODE

REMOVE THE BURNER FROM THE BOILER

Next: p168, !f169

INSPECTION FLUE

Next: !p170, !f171

INSPECTION CONDENSATE

Next: p180, !f181

RESISTANCE HARNESS SPARK GENERATOR

REMOVE CONNECTOR FROM SPARK GENERATOR

Next: p176, !f177

RESISTANCE IGNITION LEAD

DISCONNECT BOTH ENDS OF THE SPARK (HT) LEAD

Next: !p178, !f179

VOLTAGE EXTERNAL CONTROLS (NO DEMAND)

{ALLDEMANDOFF}
GAIN ACCESS TO THE BOILERS MAIN TERMINAL STRIP

Next: !p32, !f33

PRESSURE GAS INLET (BLIP TEST)

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p182, ?184, ?186

INSPECTION SUMP AND FLUE MANIFOLD

REMOVE SUMP INSPECTION COVER

Next: p1389, ?204, ?206

VOLTAGE GAS VALVE AT PCB

Next: p188, !f189

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X2A FROM THE PCB

Next: p1406, f191

INSPECTION INJECTOR

REMOVE GAS INJECTOR FROM THE FAN VENTURI

Next: p194, !f195

INSPECTION BURNER

REMOVE THE BURNER

Next: p196, !f197

INSPECTION HEAT EXCHANGER (FLUE WAYS)

REMOVE THE BURNER FROM THE BOILER

Next: !p198, !f199

INSPECTION BURNER

REMOVE THE BURNER

Next: p208, !f209

INSPECTION ELECTRODE SPARK GAP

CAREFULLY REMOVE BURNER FROM BOILER

Next: p210, ?212, ?214

INSPECTION HEAT EXCHANGER (FLUE WAYS)

REMOVE THE BURNER FROM THE BOILER

Next: !p216, !f217

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p390, !f391

VOLTAGE FAN CONTROL (AT PCB)

REMOVE DC ELECTRICAL CONNECTOR FROM FAN ASSEMBLY (5 PIN CONNECTOR) & MAKE SAFE

Next: p44, !f45

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p1128, !f393

INSPECTION CH CONTROL KNOB

Next: p656, !f397

RESISTANCE HARNESS FAN POWER

DISCONNECT MAINS VOLTAGE PLUG FROM FAN (3 PIN CONNECTOR)

Next: !p42, !f1209

INSPECTION SYSTEM PRESSURE AND RISE

Next: p412, ?414, ?416

PUMP LIMPET TEST

Next: p418, !f419

INSPECTION ISOLATION VALVE FLOW AND RETURN

Next: p420, !f421

INSPECTION EXTERNAL BYPASS

Next: p486, !f463

RESISTANCE HARNESS FAN CONTROL

REMOVE LOW VOLTAGE CONNECTOR FROM FAN

Next: p46, !f47

RESISTANCE HARNESS FAN POWER

DISCONNECT MAINS VOLTAGE PLUG FROM FAN (3 PIN CONNECTOR)

Next: !p48, !f1208

INSPECTION INTERNAL BYPASS

DRAIN BOILER PRIMARY CIRCUIT
REMOVE BYPASS PIPE FROM FRONT OF LEFT HAND HYDROBLOCK

Next: !p1256, !f488

PRESSURE EXPANSION VESSEL

SYSTEM PRESSURE DISCHARGED

Next: !p521, !f522

GAS RATE

TURN THE CH TEMP CONTROL KNOB TO THE 10 O'CLOCK POSITION

Next: p657, ?658, ?660

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p700, !f701

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p686, !f1189

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p662, !f663

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p664, !f665

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p769, !f667

OBSERVATION IS WEATHER COMPENSATION FITTED - CH OP

Next: p1171, f1500

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p1614, !f70

INSPECTION INJECTOR

REMOVE GAS INJECTOR FROM THE FAN VENTURI

Next: p688, !f1188

INSPECTION CONDENSATE

Next: p690, !f691

INSPECTION FAN MECHANICAL

REMOVE THE FAN

Next: p692, !f693

INSPECTION BURNER

REMOVE THE BURNER

Next: p694, !f695

INSPECTION HEAT EXCHANGER (FLUE WAYS)

REMOVE THE BURNER FROM THE BOILER

Next: p696, !f697

INSPECTION FLUE

Next: !p698, !f699

VOLTAGE FAN (AT PCB) - MAINS

GAIN ACCESS TO PCB (USE INSULATION MAT AS REQUIRED)

Next: p36, ?38, ?40

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p790, !f703

RESISTANCE POTENTIOMETER

REMOVE THE MAIN PCB TO GAIN ACCESS TO THE DISPLAY PCB

Next: p1141, !f721

RESISTANCE POTENTIOMETER

REMOVE THE MAIN PCB TO GAIN ACCESS TO THE DISPLAY PCB

Next: p666, !f789

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p92, !f93

RESISTANCE POTENTIOMETER

REMOVE THE MAIN PCB TO GAIN ACCESS TO THE DISPLAY PCB

Next: p1151, !f1131

INSPECTION SYSTEM PRESSURE AND RISE

Next: p815, ?817, ?819

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: !p813, !f814

INSPECTION ISOLATION VALVE FLOW AND RETURN

Next: p821, !f822

INSPECTION EXTERNAL BYPASS

Next: p823, !f824

RESISTANCE SENSOR TEMP NO FLOW / PRIMARY AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p825, !f826

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p893, !f828

OBSERVATION PUMP RUNS

Next: p894, f1200

PUMP LIMPET TEST

Next: p900, !f901

OBSERVATION WHICH DEMAND IS SHOWING

Next: p18, f66

TEMPERATURE DIFFERENTIAL FLOW & RETURN

CH TEMPERATURE CONTR

Next: p915, !f914

INSPECTION SUMP AND FLUE MANIFOLD

REMOVE SUMP INSPECTION COVER

Next: !p908, ?910, ?912

OBSERVATION BOILER MODULATION (OVERHEAT)

ATTACH TEMPERATURE CLAMP TO THE FLOW PIPE AS INDICATED BY THE RED ARROW

Next: p902, ?922, ?924

RESISTANCE SENSOR TEMP RETURN AND HARNESS

GAIN ACCESS TO PCB
DISCONNECT PLUG X6 FROM PCB

Next: p719, !f95

INSPECTION SUMP AND FLUE MANIFOLD

REMOVE SUMP INSPECTION COVER

Next: !p932, ?928, ?930

INSPECTION DETECTION ELECTRODE

REMOVE FLAME DETECTION ELECTRODE FROM ITS HOUSING

Next: p945, !f946

PRESSURE TIGHTNESS TEST INSTALLATION

Next: p947, !f948

OBSERVATION FAULT CODE RESET (L6)

Next: !p949, !f950

RESISTANCE FAN AND MAINS HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p957, f958

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X2A FROM THE PCB

Next: p1123, f962

VOLTAGE LOW WATER PRESSURE SENSOR (RETURN)

PREHEAT OFF
ENSUR

Next: !p981, f1639

System Information

  • Total Tests: 606
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control