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:

ARISTON GENUS HE

GLOBALLY REPLACED

Next: &219, *

NO FAULT FOUND

Next: nff

OBSERVATION FAN RUNS

GAIN ACCESS TO THE FAN

Next: &292, f2021

OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: &2000, ?70, ?74, ?76

OPERATION CH

Next: &268, ?155, ?157, ?768, ?3261

ARISTON GENUS HE - CASE REMOVAL INSTRUCTIONS

Next: &393, !f220

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &1990, !f265

OBSERVATION PUMP OVERRUN

Next: &nff, !f355

OBSERVATION PUMP RUNS

Next: &69, f293

USER DISPLAY GUIDE

Next: &3086, !f394

HEADER FOR FUSE INVESTIGATION

OK TO BE BLANK

Next: &nff, f2833

HEADER FOR OVERHEAT FAULT CODE 101

OK TO BE BLANK

Next: &nff, f2531

HEADER FOR INSUFFICIENT CIRCULATION FAULT CODE 103 - 107 AND 1P1 1P2 1P3

OK TO BE BLANK

Next: &nff, f954

HEADER FOR CH FLOW TEMP PROBE ERROR FAULT CODE 110

OK TO BE BLANK

Next: &nff, f956

HEADER FOR LOW PRESSURE FAULT CODE 108

OK TO BE BLANK

Next: &nff, f3203

HEADER FOR EXTERNAL SENSOR ERROR FAULT CODE 114

OK TO BE BLANK

Next: &nff, f968

HEADER FOR FLOOR THERMOSTAT CONTACT OPEN FAULT CODE 116

OK TO BE BLANK

Next: &nff, f974

HEADER FOR EEPROM/ MAIN PCB ERROR FAULT CODE 301, 303, 305, 306 AND 307

OK TO BE BLANK

Next: &nff, f1088

HEADER FOR COMMUNICATION ERROR FAULT CODE 302

OK TO BE BLANK

Next: &nff, f1078

HEADER FOR FLAME DETECTED GAS VALVE CLOSED FAULT CODE 502

OK TO BE BLANK

Next: &nff, f992

HEADER FOR THERMOFUSE OPEN FAULT CODE 610

OK TO BE BLANK

Next: &nff, f1000

HEADER FOR FAN FAULT CODE 604 AND 612

OK TO BE BLANK

Next: &nff, f1006

HOW TO ACCESS THE PARAMETER SERVICE CODE

Next: &nff, !f1016

HEADER FOR ERROR CODE 201 DHW TEMP PROBE OPEN / SHORT CIRCUIT

OK TO BE BLANK

Next: &nff, f2048

HEADER FOR TOO MANY RESETS ERROR CODE 304

OK TO BE BLANK

Next: &nff, f1060

OBSERVATION APPLIANCE SELF CHECK

NO DEMANDS

Next: &264, ?1097, ?1101, ?1153, ?1157

HEADER FOR CH RETURN TEMP PROBE ERROR CODE 112

OK TO BE BLANK

Next: &nff, f1166

HEADER FOR HIGH PRESSURE ERROR CODE 109

OK TO BE BLANK

Next: &nff, f3186

HOW TO ACTIVATE TEST FUNCTION

Next: &nff, !f1798

HOW TO ACCESS AND MODIFY THE PARAMETERS

Next: &nff, !f1940

DHW FLOW RATE

Next: &1998, f1991

OBSERVATION DHW DEMAND RECOGNISED

TURN HOT WATER TAP ON WITH A FLOW RATE OF 3 L/MIN

Next: &51, f2522

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: &2002, !f2001

OPERATION DHW

Next: &152, ?2003, ?2005, ?2007, ?2009

PARAMETER INFORMATION - NEW PCB FITTED

Next: &1092, !f3087

HEADER FOR PRESSURE SENSOR ERROR 102

OK TO BE BLANK

Next: &nff, f3172

HEADER FOR 1P4 ERROR CODE FILLING NEEDED

OK TO BE BLANK

Next: &nff, f3223

HEADER FOR ERROR CODE 203

INTENTIONALLY BLANK - HEADER FOR FAULT CODE

Next: &nff, f3272

ERROR CODE 610

HARNESS - FAN, SENSORS AND THERMAL FUSE

Next: End

ERROR CODE 612

HARNESS - FAN, SENSORS AND THERMAL FUSE

Next: End

ERROR CODE 612

PCB - MAIN

Next: End

PARAMETER INFO

Z REDIRECTION

Next: End

ERROR CODE 304

PCB - MAIN

Next: End

ERROR CODE 302

PCB - MAIN

Next: End

MAIN PCB ERROR CODE

EEPROM KEY

Next: End

ERROR CODE 302

WIRING - DISPLAY

Next: End

ERROR CODES 1

Z REDIRECTION

Next: End

NO DISPLAY

FUSE (FUSED SPUR)

Next: End

FIRES WITH NO DEMAND

PROBE - TEMPERATURE - CH (FLOW)

Next: End

TEMP PROBE ERROR CODE

PROBE - TEMPERATURE - CH (RETURN)

Next: End

TEMP PROBE ERROR CODE

PROBE - TEMPERATURE - CH (FLOW)

Next: End

BLANK DISPLAY

PCB - MAIN

Next: End

CIRCULATION ERROR CODES

TEMPERATURE PROBE FITMENT

Next: End

CIRCULATION ERROR CODES

PROBE - TEMPERATURE - CH (FLOW)

Next: End

CIRCULATION ERROR CODES

PROBE - TEMPERATURE - CH (RETURN)

Next: End

BLANK DISPLAY

WIRING - DISPLAY

Next: End

FAILS TO REACH SET TEMP

SYSTEM PRESSURE

Next: End

ERROR CODE 502

GAS VALVE

Next: End

ERROR CODE 116

HARNESS 6 WIRE

Next: End

FAULT CODE 116

HARNESS 6 WIRE

Next: End

TEST FUNCTION ACTIVATION

Z REDIRECTION

Next: End

PARAMETERS

Z REDIRECTION

Next: End

BURNER DOES NOT IGNITE

CABLE - IGNITOR / GAS VALVE & PCB - MAIN

Next: End

BURNER DOES NOT IGNITE

GAS VALVE & PCB - MAIN

Next: End

BURNER DOES NOT IGNITE 1

CABLE - IGNITOR / GAS VALVE

Next: End

BURNER DOES NOT IGNITE 2

GAS VALVE

Next: End

POOR FLOW RATE

TAP - COLD WATER

Next: End

POOR FLOW RATE

COLD WATER SUPPLY

Next: End

TOO LOW

GAS PRESSURE INLET

Next: End

FAN NOT RUNNING

HARNESS - FAN, SENSORS AND THERMAL FUSE

Next: End

FAN NOT RUNNING

PROBE - TEMPERATURE - CH (FLOW)

Next: End

FAN NOT RUNNING

PROBE - NTC

Next: End

FAN NOT RUNNING

PROBE - TEMPERATURE - CH (RETURN)

Next: End

PUMP NOT RUNNING

PCB - MAIN

Next: End

PUMP NOT RUNNING

CABLE - PUMP

Next: End

DHW TOO HOT

PROBE - NTC

Next: End

DHW RUNS HOT THEN COLD

PROBE - NTC

Next: End

DHW RUNS HOT THEN COLD

PROBE - TEMPERATURE - CH (FLOW)

Next: End

DHW RUNS HOT THEN COLD

PROBE - TEMPERATURE - CH (RETURN)

Next: End

DHW RUNS HOT THEN COLD

PUMP

Next: End

DHW RUNS HOT THEN COLD

SYSTEM PRESSURE

Next: End

DHW RUNS HOT THEN COLD

TEMPERATURE PROBE FITMENT

Next: End

POOR DHW TEMP RISE

PROBE - NTC

Next: End

POOR DHW TEMP RISE

PROBE - TEMPERATURE - CH (FLOW)

Next: End

POOR DHW TEMP RISE

PROBE - TEMPERATURE - CH (RETURN)

Next: End

NO VOLTAGE TO DIVERTER MOTOR

PCB - MAIN

Next: End

OPEN CIRCUIT MOTOR NOT MOVING TO DHW POSITION

CABLE - VALVE - 3 WAY

Next: End

NO POWER TO DIVERTER MOTOR

PCB - MAIN

Next: End

OPEN CIRCUIT MOTOR NOT MOVING TO CH POSITION

CABLE - VALVE - 3 WAY

Next: End

FAILS TO REACH SET TEMP

PROBE - TEMPERATURE - CH (FLOW)

Next: End

FAILS TO REACH SET TEMP

PROBE - TEMPERATURE - CH (RETURN)

Next: End

SET TEMP NOT REACHED

PARAMETER HEATING POWER

Next: End

CASE REMOVAL

Z REDIRECTION

Next: End

POOR DHW TEMP RISE

SYSTEM PRESSURE

Next: End

PUMP NOT RUNNING FAULT CODE 102

PCB - MAIN

Next: End

PUMP NOT RUNNING FAULT CODE 102

CABLE - PUMP

Next: End

REACHES TEMP RADS COOL

TAP - SERVICE

Next: End

INSUFFICIENT CIRCULATION FAULT CODE

TAP - SERVICE

Next: End

CIRCULATION ISSUES

EXCHANGER (MAIN)

Next: End

CIRCULATION ERROR CODES

BY-PASS

Next: End

CIRCULATION ERROR CODES

FILTER - WATER

Next: End

CIRCULATION ERROR CODES

PUMP

Next: End

NO PERMANENT VOLTAGE TO FLOW METER

PCB - MAIN

Next: End

NOT SENSING DEMAND

HARNESS FLOW METER

Next: End

DHW DEMAND NOT RECOGNISED

METER - FLOW (TURBINE)

Next: End

OVERHEAT

SYSTEM PRESSURE

Next: End

OVERHEAT

GAUGE - PRESSURE

Next: End

PUMP NOT RUNNING FAULT CODE 101

PCB - MAIN

Next: End

PUMP NOT RUNNING FAULT CODE 101

CABLE - PUMP

Next: End

OVERHEAT

PUMP

Next: End

PUMP OVERRUN NOT WORKING

PCB - MAIN

Next: End

OVERHEAT

EXCHANGER (MAIN)

Next: End

OVERHEAT

BY-PASS

Next: End

OVERHEAT

FILTER - WATER

Next: End

OVERHEAT FAULT CODE

TAP - SERVICE

Next: End

FOR TYPE DIAG PROCEDURE

Z REDIRECTION

Next: End

OVERHEAT ERROR CODE

TEMPERATURE PROBE FITMENT

Next: End

OVERHEAT ERROR CODE

PROBE - TEMPERATURE - CH (FLOW)

Next: End

OVERHEAT ERROR CODE

PROBE - TEMPERATURE - CH (RETURN)

Next: End

FIRES WITH NO DEMAND

PROBE - TEMPERATURE - CH (RETURN)

Next: End

SET INCORRECTLY

PARAMETER APPLIANCE VERSION

Next: End

ERROR CODE 102

HARNESS - LWPS, OVERHEAT AND DHW PROBE NTC

Next: End

ERROR CODE 101

THERMOSTAT 100 DEG SAFETY

Next: End

DHW RUNS HOT THEN COLD

FILTER - WATER

Next: End

POOR DHW TEMP RISE

FILTER - WATER

Next: End

FUSE INVESTIGATION

3 WAY VALVE COMPONENTS

Next: End

FUSE INVESTIGATION

CABLE - PUMP

Next: End

FUSE INVESTIGATION

CABLE - IGNITOR / GAS VALVE

Next: End

FUSE INVESTIGATION

GAS VALVE

Next: End

FUSE INVESTIGATION

SPARK GENERATOR

Next: End

FUSE INVESTIGATION

MOTOR - 3 WAY VALVE

Next: End

POOR HW

PARAMETER DHW POWER

Next: End

REACHES TEMP RADS COOL

BY-PASS

Next: End

REACHES TEMP RADS COOL

FILTER - WATER

Next: End

SEIZED

KIT - MOTOR C/W SPRING - 3 WAY VALVE

Next: End

BOILER TO TEMP RADS COOL

PUMP

Next: End

BOILER TO TEMP RADS DO NOT HEAT

Next: End

CIRCULATION ERROR CODES

SYSTEM PRESSURE

Next: End

INSUFFICIENT CIRC

GAUGE - PRESSURE

Next: End

FAULT CODE 502

GAS VALVE

Next: End

ERROR CODE 502

ELECTRODE - IONISATION

Next: End

BURNER DOES NOT IGNITE

EXCHANGER (MAIN)

Next: End

DOES NOT IGNITE

FLUE

Next: End

BURNER DOES NOT IGNITE

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE

CABLE - IGNITOR / GAS VALVE

Next: End

POOR DHW TEMP RISE

PUMP

Next: End

POOR DHW TEMP RISE

EXTERNAL MIXING

Next: End

FAILED GAS RATE POOR DHW TEMP

SILENCER

Next: End

FAILED GAS RATE POOR DHW TEMP

FLUE

Next: End

FAILED GAS RATE POOR DHW TEMP

TRAP

Next: End

FAILED GAS RATE POOR DHW

BURNER

Next: End

FAILED GAS RATE POOR DHW TEMP

EXCHANGER (MAIN)

Next: End

PARAMETER GUIDE

Z REDIRECTION

Next: End

NO DISPLAY

FUSE 250V 2A

Next: End

BLANK DISPLAY SUPERSEDED PCB

PCB - MAIN

Next: End

BLANK DISPLAY SUPERSEDED PCB

WIRING - DISPLAY

Next: End

IGNITES BUT DOES NOT ESTABLISH

CABLE - ELECTRODE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

ELECTRODE - IONISATION

Next: End

IGNITES BUT DOES NOT ESTABLISH

SILENCER

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

FLUE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

VENTURI

Next: End

DOES NOT ESTABLISH

EXCHANGER (MAIN)

Next: End

BURNER DOES NOT ESTABLISH

TRAP

Next: End

NOT RUNNING WITH DEMAND

FAN ASSEMBLY

Next: End

FAN NOT RUNNING 1

PROBE - TEMPERATURE - CH (FLOW)

Next: End

FAN NOT RUNNING 1

PROBE - TEMPERATURE - CH (RETURN)

Next: End

FAN NOT RUNNING 1

PROBE - NTC

Next: End

ERROR CODE 612

FAN ASSEMBLY

Next: End

612 ERROR

PCB - MAIN

Next: End

NO VOLTAGE SENT TO PRESSURE SENSOR

PCB - MAIN

Next: End

FAULT CODE 102

HARNESS - LWPS, OVERHEAT AND DHW PROBE NTC

Next: End

ERROR CODE 109

SYSTEM PRESSURE TOO HIGH

Next: End

ERROR CODE 109

GAUGE - PRESSURE

Next: End

ERROR CODE 109

VESSEL - EXPANSION

Next: End

NO VOLTAGE TO PRESSURE SENSOR

PCB - MAIN

Next: End

ERROR CODE 109

HARNESS - LWPS, OVERHEAT AND DHW PROBE NTC

Next: End

FAULT CODE 109

PARAMETER LOW WATER PRESSURE DEVICE

Next: End

FAULT CODE 108

SYSTEM PRESSURE

Next: End

FAULT CODE 108

GAUGE - PRESSURE

Next: End

ERROR CODE 108

PCB - MAIN

Next: End

FAULT CODE 108

HARNESS - LWPS, OVERHEAT AND DHW PROBE NTC

Next: End

FAULT CODE 108

PARAMETER LOW WATER PRESSURE DEVICE

Next: End

FAULT CODE 1P4

SYSTEM PRESSURE

Next: End

FAULT CODE 1P4

GAUGE - PRESSURE

Next: End

ERROR CODE 1P4

PCB - MAIN

Next: End

FAULT CODE 1P4

HARNESS - LWPS, OVERHEAT AND DHW PROBE NTC

Next: End

CH ON WITH NO DEMAND

PCB - MAIN

Next: End

DHW ON WITH NO DEMAND

PCB - MAIN

Next: End

NO CH 1

HARNESS 6 WIRE

Next: End

NO CH 3

HARNESS 6 WIRE

Next: End

NO CH 2

HARNESS 6 WIRE

Next: End

ERROR CODE 203

PARAMETER APPLIANCE VERSION

Next: End

POOR HW TEMP - SPINDLE SNAPPED

KNOB

Next: End

FAILS TO REACH SET TEMP SPINDLE SNAPPED

KNOB

Next: End

NO PUMP OVERRUN

PCB - MAIN

Next: End

USER DISPLAY GUIDE

Z REDIRECTION

Next: End

BURNER IGNITES BUT BAFFLES

TRAP

Next: End

BURNER IGNITES BUT BAFFLES

SILENCER

Next: End

BURNER DOES NOT IGNITE

TRAP

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BURENR DOES NOT IGNITE 1

SILENCER

Next: End

BURNER IGNITES BUT BAFFLES

FLUE

Next: End

BURNER IGNITES BUT BAFFLES

EXCHANGER (MAIN)

Next: End

BURNER IGNITES BUT BAFFLES

BURNER

Next: End

BURNER IGNITES BUT BAFFLES

VENTURI

Next: End

BURNER DOES NOT IGNITE 1

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

VENTURI

Next: End

BURNER ESTABLISHES THEN BAFFLES

GAS PRESSURE INLET

Next: End

REACHES TEMP RADS COOL

SYSTEM PRESSURE

Next: End

EXCESSIVE SYSTEM PRESSURE RISE

VESSEL - EXPANSION

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

GAS PRESSURE INLET

Next: End

ERROR CODE 114

PCB - MAIN

Next: End

FAULT CODE 114

PCB - MAIN

Next: End

ERROR CODE 610

PCB - MAIN

Next: End

ERROR CODE 610

THERMAL FUSE

Next: End

FAULT CODE 612

FAN ASSEMBLY

Next: End

ERROR CODE 303 RESETS CONFIRM BOILER OP

Z REDIRECTION

Next: End

ERROR CODE 302

PCB - DISPLAY

Next: End

PCB ERROR CODE

PCB - MAIN

Next: End

ERROR CODES

Z REDIRECTION

Next: End

NO DISPLAY

Next: End

FUSE FURTHER INVESTIGATION

Z REDIRECTION

Next: End

APPLIANCE FIRES WITH NO DEMAND

FROST PROTECTION

Next: End

TEMP PROBE ERRPR CODE

PCB - MAIN

Next: End

TEMP PROBE ERROR CODE

HARNESS - FAN, SENSORS AND THERMAL FUSE

Next: End

ERROR CODE 110

PCB - MAIN

Next: End

TEMP PROBE FAULT CODE

HARNESS - FAN, SENSORS AND THERMAL FUSE

Next: End

BLANK DISPLAY

PCB - DISPLAY

Next: End

ERROR CODE 116

UNDERFLOOR HEATING THERMOSTAT LINK

Next: End

ERROR CODE 116

UNDERFLOOR HEATING THERMOSTAT

Next: End

BURNER DOES NOT IGNITE 2

PCB - MAIN

Next: End

POOR FLOW RATE

EXCHANGER - SECONDARY

Next: End

FAN DOES NOT RUN

FAN ASSEMBLY

Next: End

FAN NOT RUNNING

PCB - MAIN

Next: End

SEIZED

PUMP

Next: End

DHW TOO HOT

PCB - MAIN

Next: End

DHW RUNS HOT THEN COLD

PCB - MAIN

Next: End

PASSING

KIT - MOTOR C/W SPRING - 3 WAY VALVE

Next: End

NOT MOVING TO DHW POSITION

MOTOR - 3 WAY VALVE

Next: End

NOT MOVING TO CH POSITION

MOTOR - 3 WAY VALVE

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

PCB - MAIN

Next: End

POOR FLOW RATE

METER - FLOW (DHW FILTER)

Next: End

RESTRICTED BLOCKED OR JAMMED

METER - FLOW (TURBINE)

Next: End

SEIZED FAULT CODE 102

PUMP

Next: End

CIRCULATION ISSUES

EXCHANGER - SECONDARY

Next: End

CIRCULATION ERROR CODES

PCB - MAIN

Next: End

CIRCULATION ISSUES

Next: End

NOT SENSING DEMAND

PCB - MAIN

Next: End

DHW DEMAND NOT RECOGNISED

SENSOR

Next: End

SEIZED FAULT CODE 101

PUMP

Next: End

OVERHEAT

EXCHANGER - SECONDARY

Next: End

OVERHEAT

Next: End

OVERHEAT FAULT CODE

OVERHEAT

Next: End

FAULT CODE 101

PCB - MAIN

Next: End

OVERHEAT FAULT CODE

THERMOSTAT 100 DEG SAFETY

Next: End

FIRES WITH NO DEMAND 1

PCB - MAIN

Next: End

ERROR CODE 102

PROBE - NTC

Next: End

OVERHEAT ERROR CODE

PCB - MAIN

Next: End

ERROR CODE 101

HARNESS - LWPS, OVERHEAT AND DHW PROBE NTC

Next: End

RESTRICTED DHW RUNS HOT THEN COLD

EXCHANGER (MAIN)

Next: End

RESTRICTED DHW RUNS HOT THEN COLD

EXCHANGER - SECONDARY

Next: End

POOR DHW TEMP RISE

EXCHANGER (MAIN)

Next: End

POOR DHW TEMP RISE

EXCHANGER - SECONDARY

Next: End

FUSE INVESTIGATION

PUMP

Next: End

FUSE INVESTIGATION

PCB - MAIN (FUSE BLOWN)

Next: End

FUSE INV

CABLE - IGNITOR / GAS VALVE

Next: End

FUSE INVESTIGATION

CABLE - VALVE - 3 WAY

Next: End

BOILER UP TO TEMP RADS COOL

Next: End

ERROR CODE 502

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

BURNER DOES NOT IGNITE

SPARK GENERATOR

Next: End

BURNER DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

EARTH WIRE

Next: End

BURNER DOES NOT IGNITE 1

GAS VALVE

Next: End

DOES NOT IGNITE

BURNER

Next: End

BURNER DOES NOT IGNITE 1

EXCHANGER (MAIN)

Next: End

BURNER DOES NOT IGNITE 1

VENTURI

Next: End

POOR DHW TEMP RISE

PCB - MAIN

Next: End

FAILED GAS RATE POOR DHW TEMP

VENTURI

Next: End

FAILED GAS RATE POOR DHW TEMP

FAN ASSEMBLY

Next: End

FAILED GAS RATE POOR DHW TEMP

GAS VALVE

Next: End

FUSE FURTHER INVESTIGATION 1

Z REDIRECTION

Next: End

BLANK DISPLAY SUPERSEDED PCB

PCB - DISPLAY

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

BURNER

Next: End

INCORRECT GAP TO BURNER

ELECTRODE - IONISATION

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

PCB - MAIN

Next: End

FAN NOT RUNNING

FAN ASSEMBLY

Next: End

FAN NOT RUNNING 1

PCB - MAIN

Next: End

612 ERROR

FAN ASSEMBLY

Next: End

ERROR 102

SWITCH - PRESSURE - LOW

Next: End

ERROR CODE 102 AND 109

PCB - MAIN

Next: End

ERROR CODE 102

SWITCH - PRESSURE - LOW

Next: End

FAULT CODE 102

PUMP MANIFOLD

Next: End

FAULT CODE 102

SWITCH - PRESSURE - LOW

Next: End

ERROR CODE 109

PIPE - EXPANSION VESSEL

Next: End

ERROR CODE 109

SWITCH - PRESSURE - LOW

Next: End

ERROR CODE 109

PCB - MAIN

Next: End

ERROR CODE 108

SWITCH - PRESSURE - LOW

Next: End

FAULT CODE 108

PUMP MANIFOLD

Next: End

FAULT CODE 108

SWITCH - PRESSURE - LOW

Next: End

FAULT CODE 108

PCB - MAIN

Next: End

FAULT CODE 1P4

PCB - MAIN

Next: End

ERROR CODE 1P4

SWITCH - PRESSURE - LOW

Next: End

FAULT CODE 1P4

PUMP MANIFOLD

Next: End

FAULT CODE 1P4

SWITCH - PRESSURE - LOW

Next: End

CH ON WITH NO DEMAND

Next: End

DRIPPING TAP

DHW SYSTEM

Next: End

ON WITH NO DEMAND

SENSOR

Next: End

DOES NOT RESPOND TO CH

Next: End

NO CH

PCB - MAIN

Next: End

DOES NOT RESPOND TO CH 1

Next: End

NO CH 1

PCB - MAIN

Next: End

DOES NOT RESPOND TO CH 2

Next: End

NO CH 2

PCB - MAIN

Next: End

ERROR CODE 203

PCB - MAIN

Next: End

ERROR CODE 201

PCB - MAIN

Next: End

POOR HW

PCB - DISPLAY

Next: End

RADS NOT REACHING TEMP

PCB - DISPLAY

Next: End

BURNER DOES NOT IGNITE

GAS PRESSURE INLET

Next: End

BURNER DOES NOT IGNITE

BURNER

Next: End

DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

BURNER IGNITES BUT BAFFLES

GAS VALVE

Next: End

EXCESSIVE PRESSURE RISE

PIPE - EXPANSION VESSEL

Next: End

ERROR CODE 114

EXTERNAL SENSOR

Next: End

FAULT CODE 116

PCB - MAIN

Next: End

ERROR CODE 116

PCB - MAIN

Next: End

ERROR CODE SHOWN

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1098

DISPLAY DOES NOT ILLUMINATE

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1102

C HEATING ACTIVE OR DHW ACTIVE ON THE DISPLAY

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1654

F ON THE DISPLAY

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1158

APPLIANCE REACHES TEMP RADIATORS REMAIN COOL OR DO NOT HEAT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p156

APPLIANCE AND RADIATORS FAIL TO REACH SET TEMPERATURE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p771

DHW TOO HOT

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p2004

TEMPERATURE RISE UNSATISFACTORY, RADIATORS REMAIN COOL

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p2006

TEMPERATURE RISE UNSATISFACTORY, RADIATORS HEAT WITH NO DEMAND

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p2008

DHW RUNS HOT THEN COLD

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p2010

TEMPERATURE DIFFERENTIAL STILL EXCESSIVE

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: p2801

TEMPERATURE DIFFERENTIAL STILL EXCESSIVE

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: p2807

APPLIANCE DOES NOT RESPOND TO A CH DEMAND

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3248

FILTER RESTRICTED OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION FLOW METER ASSEMBLY

Next: !p2238

TURBINE RESTRICTED, BLOCKED OR JAMMED

CHARACTERISTIC TEST FROM INSPECTION FLOW METER ASSEMBLY

Next: !p2240

APPLIANCE CONTINUES TO HEAT BEYOND 82 °C

CHARACTERISTIC TEST FROM OBSERVATION DOES OVERHEAT OCCUR AT MAX TEMPERATURE

Next: !p2601

APPLIANCE OVERHEATS BEFORE 82 °C IS REACHED

CHARACTERISTIC TEST FROM OBSERVATION DOES OVERHEAT OCCUR AT MAX TEMPERATURE

Next: !p2603

IGNITION ELECTRODE AND LEAD UNSATISFACTORY

CHARACTERISTIC TEST FROM RESISTANCE IGNITION ELECTRODE, LEAD AND EARTH WIRE

Next: !p3004

EARTH WIRE UNSATISFACTORY

CHARACTERISTIC TEST FROM RESISTANCE IGNITION ELECTRODE, LEAD AND EARTH WIRE

Next: !p3006

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER AND SPARK GAP

Next: !p3012

HEAT EXCHANGER FLUEWAYS RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHHANGER FLUEWAYS

Next: !p3014

AIR / GAS MIXER (VENTURI) RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHHANGER FLUEWAYS

Next: !p3016

AIR GAS MIXER RESTRICTED AND / OR BLOCKED / IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p3079

FAN RESTRICTED AND / OR BLOCKED / IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p3081

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER AND SPARK GAP

Next: !p3137

IONISATION GAP UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION BURNER AND IONISATION GAP

Next: !p3139

PUMP MANIFOLD BLOCKED

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: !p3183

LOW PRESSURE SENSOR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: !p3185

PUMP MANIFOLD BLOCKED

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: !p3217

LOW PRESSURE SENSOR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: !p3219

PUMP MANIFOLD BLOCKED

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: !p3237

LOW PRESSURE SENSOR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

Next: !p3239

APPLIANCE DOES NOT RESPOND TO A CH DEMAND

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3256

APPLIANCE DOES NOT RESPOND TO A CH DEMAND

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3262

NO PRESSURE DROP OBSERVED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: p496

INLET PRESSURE LOW OR DIES AWAY DURING IGNITION

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: !p498

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER AND SPARK GAP

Next: !p521

SPARK GAP UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION BURNER AND SPARK GAP

Next: !p523

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: p445

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: p75

BURNER IGNITES AND ESTABLISHES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: p396

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p878

15/02/2022 10:29:10 2202_1_50_1 25/04/2022 13:25:47

28/03/2022 10:28:31

Next: End

RESISTANCE THERMOFUSE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: !p1001, f1002

RESISTANCE HARNESS THERMOFUSE

REMOVE CONNECTOR CN22 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE THERMOFUSE

Next: !p1003, !f1004

RESISTANCE HARNESS FAN

REMOVE CONNECTOR CN22 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FAN

Next: p1007, !f1008

RESET APPLIANCE - ERROR CODE 304

Next: !p1061, !f1062

VOLTAGE TO DISPLAY PCB

{GAINPCBACS}
REMOVE DISPLAY HARNESS CONNECTOR CN2 FROM THE MAIN PCB AND MAKE SAFE

Next: p1079, !f1080

INSPECTION EEPROM KEY

Next: !p1089, !f1090

RESISTANCE FUSE (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: !p1105, f1106

FUSE FURTHER INVESTIGATION (FUSED SPUR)

Next: !p1107, !f1108

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p1161, !f1162

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: !p1167, f1168

RESISTANCE RETURN TEMPERATURE PROBE

REMOVE THE LEADS FROM THE RETURN TEMPERATURE PROBE (GREY LEADS)

Next: !p1169, !f1170

RESISTANCE FLOW TEMPERATURE PROBE

REMOVE THE LEADS FROM THE FLOW TEMPERATURE PROBE (BLACK LEADS)

Next: !p1173, !f1174

RESISTANCE 6 WIRE HARNESS

REMOVE CONNECTOR CN52 FROM THE MAIN PCB

Next: !p1788, !f1789

RESISTANCE 6 WIRE HARNESS

REMOVE CONNECTOR CN52 FROM THE MAIN PCB

Next: !p1791, !f1792

INSPECTION DHW ISOLATION VALVE

Next: p1992, !f1993

RESISTANCE HARNESS FAN

REMOVE CONNECTOR CN22 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FAN

Next: p2022, !f2023

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2028, !f2029

RESISTANCE DHW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: !p3275, f2707

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p2806, ?2071, ?3255

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p2812, ?2131, ?2133

VOLTAGE TO DIVERTER MOTOR - DHW DEMAND

Next: p2139, !f2140

VOLTAGE TO DIVERTER MOTOR - CH DEMAND

Next: p2162, !f2163

VOLTAGE PUMP AT PCB

REMOVE CONNECTOR CN10 (PUMP CABLE) FROM THE PCB AND MAKE SAFE

Next: p2261, !f2262

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p2512, !f2513

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p2516, !f2517

VOLTAGE FLOW METER - DEMAND

TURN HOT WATER TAP O

Next: !p2523, f2524

VOLTAGE FLOW METER - SUPPLY

ENSURE NO DEMANDS
REMOVE CONNECTOR CN14 FROM THE MAIN PCB AND MAKE SAFE

Next: p2525, !f2526

OBSERVATION RESET APPLIANCE - OVERHEAT

ENSURE APPLIANCE IS COOL

Next: p2571, f2604

VOLTAGE PUMP AT PCB

REMOVE CONNECTOR CN10 (PUMP CABLE) FROM THE PCB AND MAKE SAFE

Next: p2580, !f2581

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p2590, !f2591

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p2594, !f2595

RESISTANCE SAFETY THERMOSTAT AND HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: !p2719, f2720

RESISTANCE HARNESS DHW TEMPERATURE PROBE

REMOVE CONNECTOR CN4 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE DHW TEMPERATURE PROBE

Next: !p2708, !f2709

RESISTANCE SAFETY THERMOSTAT

REMOVE THE LEADS FROM THE SAFETY THERMOSTAT

Next: !p2721, !f2722

INSPECTION DIVERTER MOTOR / VALVE FOR FUSE FURTHER INVESTIGATION

REMOVE ELECTRICAL CO

Next: p2834, !f2835

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR CN10 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p2839, !f2840

RESISTANCE SPARK GENERATOR FOR FUSE INVESTIGATION

DISCONNECT ELECTRICAL CONNECTOR FROM THE SPARK GENERATOR

Next: !p2847, !f2848

RESISTANCE DIVERTER MOTOR FOR FUSE INVESTIGATION

REMOVE THE ELECTRICA

Next: !p2850, !f2851

VOLTAGE PUMP AT PCB

REMOVE CONNECTOR CN10 (PUMP CABLE) FROM THE PCB AND MAKE SAFE

Next: p655, !f2041

VOLTAGE SPARK GENERATOR AT PCB

REMOVE THE LEAD FROM THE SPARK GENERATOR AND MAKE SAFE

Next: p2997, !f2998

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p3070, !f3071

FUSE FURTHER INVESTIGATION (PCB FUSE)

Next: !p3116, !f3117

VOLTAGE TO DISPLAY PCB - SUPERSEDED PCB

REMOVE DISPLAY HARNESS CONNECTOR CN25 FROM THE MAIN PCB AND MAKE SAFE

Next: p3119, !f3120

VOLTAGE FAN DEMAND - SUPERSEDED PCB

Next: !p3155, f3156

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p3157, !f3158

VOLTAGE FAN DEMAND - SUPERSEDED PCB

Next: !p3169, !f3170

VOLTAGE LOW PRESSURE SENSOR - RETURN

{GAINPCBACS}

Next: p3173, f3174

VOLTAGE LOW PRESSURE SENSOR - SEND

Next: p3175, !f3176

INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

APPLIANCE DRAINED AN

Next: !p3181, ?3182, ?3184

OBSERVATION SYSTEM PRESSURE

Next: p3187, !f3188

PRESSURE EXPANSION VESSEL

APPLIANCE DRAINED AND DISCHARGED

Next: !p3193, !f3194

VOLTAGE LOW PRESSURE SENSOR - SEND

Next: p3197, !f3198

OBSERVATION SYSTEM PRESSURE

Next: p3204, !f3205

VOLTAGE LOW PRESSURE SENSOR - SEND

Next: p3210, !f3211

OBSERVATION SYSTEM PRESSURE

Next: p3224, !f3225

VOLTAGE LOW PRESSURE SENSOR - SEND

Next: p3230, !f3231

OBSERVATION ISOLATE COLD FEED TO APPLIANCE

ISOLATE THE COLD MAINS SUPPLY
(TURN THE LEVER 90° CLOCKWISE UNTIL HORIZONTAL)

Next: !p3244, f3245

OBSERVATION REMOVE FLOW SENSOR CONNECTOR

DISCONNECT THE ELECTRICAL CONNECTOR FROM THE FLOW SENSOR AND MAKE SAFE

Next: !p3246, !f3247

RESISTANCE 6 WIRE HARNESS

REMOVE CONNECTOR CN52 FROM THE MAIN PCB

Next: !p3253, !f3254

RESISTANCE 6 WIRE HARNESS

REMOVE CONNECTOR CN52 FROM THE MAIN PCB

Next: !p3259, !f3260

RESISTANCE 6 WIRE HARNESS

REMOVE CONNECTOR CN52 FROM THE MAIN PCB

Next: !p3265, !f3266

OBSERVATION CHECK PARAMETER 2-2-8 APPLIANCE VERSION - ERROR CODE 203

Next: !p3273, !f3274

INSPECTION CH CONTROL KNOB

REMOVE THE CH TEMPERATURE CONTROL KNOB

Next: !p3286, !f3287

INSPECTION DHW CONTROL KNOB

REMOVE THE DHW TEMPERATURE CONTROL KNOB

Next: !p3284, !f3285

RESISTANCE GAS VALVE HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB
REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p1943, !f1944

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p1372, !f1373

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: !p1171, f1172

OBSERVATION EXTERNAL SENSOR

Next: p969, !f970

OBSERVATION UNDERFLOOR HEATING

Next: p975, f976

RESISTANCE UNDERFLOOR HEATING THERMOSTAT LINK

REMOVE CONNECTOR CN52 FROM THE PCB

Next: !p977, f1787

INSTALLATION TIGHTNESS TEST

Next: p1776, !f1778

RESISTANCE FAN

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p3163, !f3167

VOLTAGE FAN DEMAND

REMOVE FAN CONNECTOR AND MAKE SAFE

Next: !p1011, !f1012

RESISTANCE HARNESS DISPLAY PCB

DISCONNECT THE DISPL

Next: !p1086, !f1091

ERROR CODES

Next: !p1099, !f1100

VOLTAGE MAINS POWER INPUT AT PCB

Next: p1103, f1104

RESISTANCE FUSE PCB

REMOVE FUSE FROM PCB

Next: p3109, f3115

TEMPERATURE FLOW

ATTACH A TEMPERATURE

Next: !p1159, f1160

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2697, !f2698

VOLTAGE TO DISPLAY PCB

{GAINPCBACS}
REMOVE DISPLAY HARNESS CONNECTOR CN2 FROM THE MAIN PCB AND MAKE SAFE

Next: p1192, !f1193

RESISTANCE HARNESS DISPLAY PCB

DISCONNECT THE DISPL

Next: !p1515, !f1516

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p1374, !f1375

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p1376, !f1377

OBSERVATION SYSTEM PRESSURE

Next: p2947, !f2969

OBSERVATION PUMP RUNS

Next: p1380, f2260

PUMP LIMPET

Next: p2509, !f2520

OBSERVATION SYSTEM PRESSURE

Next: p800, !f812

OBSERVATION MAXIMUM HEATING POWER - PARAMETER 2-3-1

Next: p2168, !f2194

OBSERVATION WHICH DEMAND IS ACTIVATED

ENSURE NO DEMANDS

Next: p3240, f3243

INSPECTION CH CONTROL KNOB OPERATION

Next: p158, f3276

PRESSURE STANDING RETURN

ATTACH PRESSURE GAUG

Next: p2971, !f2972

RESISTANCE GAS VALVE

REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: !p1945, !f1946

RESISTANCE GAS VALVE

REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p528, !f1965

OBSERVATION COLD WATER SUPPLY

Next: p1994, !f1995

INSPECTION FLOW METER ASSEMBLY

ISOLATE THE COLD WAT

Next: !p1996, ?2237, ?2239

RESISTANCE DHW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: !p2044, !f2045

OBSERVATION SYSTEM PRESSURE

Next: p2195, !f2234

OBSERVATION DIVERTER MOTOR SPINDLE - DHW POSITION

REMOVE LOCKING PIN A

Next: !p2137, f2138

OBSERVATION SYSTEM PRESSURE

Next: p2075, !f2092

RESISTANCE FAN

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p3143, !f3153

VOLTAGE FAN DEMAND

REMOVE FAN CONNECTOR AND MAKE SAFE

Next: !p2026, f2027

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2033, !f2036

RESISTANCE DHW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: !p2034, !f2035

RESISTANCE DHW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: p2060, !f2061

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2062, !f2063

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2064, !f2065

PUMP LIMPET

Next: p2066, !f2067

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p2068, f2069

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p2058, !f2093

RESISTANCE DHW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: p2099, !f2100

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2101, !f2102

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2103, !f2104

PUMP LIMPET

Next: p3019, !f3066

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p2107, f2108

APPLIANCE OUTPUT

SET APPLIANCE TO 100% OUTPUT

Next: !p3068, f3069

RESISTANCE HARNESS DIVERTER MOTOR

REMOVE CONNECTOR CN9 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTOR FROM THE DIVERTER MOTOR

Next: !p2141, !f2142

OBSERVATION DIVERTER MOTOR SPINDLE - CH DEMAND

REMOVE LOCKING PIN A

Next: p2153, f2161

INSPECTION DIVERTER VALVE BODY

REMOVE LOCKING PIN A

Next: p2915, !f2920

RESISTANCE HARNESS DIVERTER MOTOR

REMOVE CONNECTOR CN9 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTOR FROM THE DIVERTER MOTOR

Next: !p2164, !f2165

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2169, !f2170

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: !p2192, !f2193

INSPECTION DHW CONTROL KNOB OPERATION

Next: p2852, f3279

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR CN10 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p2263, !f2264

PUMP LIMPET

Next: p2921, !f2935

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p1378, !f2433

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p2510, f2511

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p2514, f2515

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p2518, !f2519

RESISTANCE HARNESS FLOW METER

REMOVE CONNECTOR CN14 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FLOW METER

Next: p2527, !f2528

INSPECTION FLOW TURBINE

ISOLATE THE COLD WAT

Next: !p2529, !f2530

OBSERVATION SYSTEM PRESSURE

Next: p2572, !f2573

OBSERVATION SYSTEM PRESSURE RISE

Next: p2574, !f2575

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p2609, !f2637

OBSERVATION PUMP RUNS

Next: p2578, f2579

PUMP LIMPET

Next: p2584, !f2585

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR CN10 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p2582, !f2583

OBSERVATION PUMP OVERRUN FOR OVERHEAT

Next: p2586, !f2587

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p2588, f2589

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p2592, f2593

OBSERVATION DOES OVERHEAT OCCUR AT MAX TEMPERATURE

ATTACH A TEMPERATURE CLAMP TO THE FLOW PIPE

Next: !p2598, ?2600, ?2602

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p2596, !f2597

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p2638, !f2694

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2666, !f2695

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p2576, !f2696

OBSERVATION CHECK PARAMETER 2-2-8 APPLIANCE VERSION - F ON DISPLAY

Next: !p2699, !f2700

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p2802, !f2803

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p2808, !f2809

RESISTANCE DIVERTER MOTOR AND HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p2836, f2849

RESISTANCE PUMP AND HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN10 FROM THE PCB

Next: p2837, f2838

RESISTANCE GAS VALVE HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN3 FROM THE PCB
REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p2841, !f2842

RESISTANCE GAS VALVE

REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p2843, !f2844

RESISTANCE SPARK GENERATOR AND HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p2845, f2846

OBSERVATION MAXIMUM DHW POWER - PARAMETER 2-3-2

Next: p2094, !f2908

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p2916, !f2917

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p2918, !f2919

INSPECTION EXTERNAL BYPASS

Next: p2143, !f2936

OBSERVATION SYSTEM PRESSURE RISE

Next: p2412, !f2970

RESISTANCE IONISATION ELECTRODE

REMOVE IONISATION EL

Next: !p2973, !f2974

INSPECTION FLUE

Next: p504, !f2995

RESISTANCE HARNESS SPARK GENERATOR

REMOVE CONNECTOR CN3 FROM THE PCB
DISCONNECT THE ELECTRICAL LEAD FROM THE SPARK GENERATOR

Next: p2999, !f3000

RESISTANCE IGNITION ELECTRODE, LEAD AND EARTH WIRE

REMOVE THE IGNITION

Next: !p3001, ?3003, ?3005

TEMPERATURE COMPARISON OF HOT WATER - EXTERNAL MIXING TEST

Next: p2105, !f3067

INSPECTION FLUE

Next: p3072, !f3073

INSPECTION CONDENSATE PIPE

Next: p3074, !f3075

INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p3076, ?3078, ?3080

INSPECTION BURNER

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p3082, !f3083

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p3084, !f3085

OBSERVATION WHICH VERSION PCB IS FITTED

{GAINPCBACS}

Next: p1191, f3118

RESISTANCE HARNESS DISPLAY PCB

DISCONNECT THE DISPL

Next: !p3121, !f3122

RESISTANCE IONISATION CABLE

REMOVE IONISATION LEAD FROM CN5 ON PCB
DISCONNECT IONISATION LEAD AT THE INLINE CONNECTOR

Next: p3124, !f3125

RESISTANCE IONISATION ELECTRODE

REMOVE IONISATION EL

Next: p3126, !f3127

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p3128, !f3129

INSPECTION FLUE

Next: p3130, !f3131

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p3132, !f3133

INSPECTION BURNER AND IONISATION GAP

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p3134, ?3136, ?3138

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p3140, !f3141

OBSERVATION WHICH VERSION PCB IS FITTED

{GAINPCBACS}

Next: p2024, f3154

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN22 FROM THE PCB

Next: p3159, !f3160

RESISTANCE DHW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: !p3161, !f3162

OBSERVATION WHICH VERSION PCB IS FITTED

{GAINPCBACS}

Next: p1009, f3168

OBSERVATION ADJUST SYSTEM PRESSURE

Next: !p3179, f3180

RESISTANCE LOW PRESSURE SENSOR HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE LOW PRESSURE SENSOR

Next: !p3177, !f3178

OBSERVATION SYSTEM PRESSURE RISE

Next: p3189, !f3190

OBSERVATION DOES SYSTEM PRESSURE REMAIN STABLE

APPLIANCE CH THERMOSTAT SET TO MAX

Next: p3191, f3192

VOLTAGE LOW PRESSURE SENSOR - RETURN

{GAINPCBACS}

Next: p3195, f3196

OBSERVATION CHECK PARAMETER 2-4-7 LOW WATER PRESSURE DEVICE

Next: !p3201, !f3202

RESISTANCE LOW PRESSURE SENSOR HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE LOW PRESSURE SENSOR

Next: !p3199, !f3200

OBSERVATION SYSTEM PRESSURE RISE

Next: p3206, !f3207

VOLTAGE LOW PRESSURE SENSOR - RETURN

{GAINPCBACS}

Next: p3208, f3209

OBSERVATION CHECK PARAMETER 2-4-7 LOW WATER PRESSURE DEVICE

Next: !p3220, !f3221

RESISTANCE LOW PRESSURE SENSOR HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE LOW PRESSURE SENSOR

Next: p3212, !f3213

INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

APPLIANCE DRAINED AN

Next: !p3214, ?3216, ?3218

OBSERVATION SYSTEM PRESSURE RISE

Next: p3226, !f3227

VOLTAGE LOW PRESSURE SENSOR - RETURN

{GAINPCBACS}

Next: !p3228, f3229

RESISTANCE LOW PRESSURE SENSOR HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE LOW PRESSURE SENSOR

Next: p3232, !f3233

INSPECTION LOW PRESSURE SENSOR AND MANIFOLD

APPLIANCE DRAINED AN

Next: !p3234, ?3236, ?3238

DISCONNECT EXTERNAL CONTROLS

REMOVE ALL EXTERNAL CONTROL WIRING CONNECTIONS AND MAKE SAFE
ENSURE NO DEMANDS ARE PRESENT

Next: !p3241, !f3242

BYPASS EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p3249, f3250

BYPASS EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p3257, f3258

BYPASS EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p3263, f3264

INSPECTION CONDENSATE PIPE

Next: p77, !f410

INSPECTION FLUE

Next: p585, !f593

INSPECTION CONDENSATE PIPE

Next: p472, !f473

VOLTAGE GAS VALVE AT PCB

Next: p479, f499

PRESSURE GAS INLET DROP

ATTACH PRESSURE GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p503, ?495, ?497

INSPECTION FLUE

Next: p526, !f527

OBSERVATION SPARKING OCCURS

DISCONNECT THE IGNIT

Next: p2981, f2996

RESISTANCE IGNITION ELECTRODE AND LEAD

REMOVE THE IGNITION ELECTRODE FROM THE BURNER DOOR
DISCONNECT LEAD AT THE SPARK GENERATOR

Next: p515, !f616

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p517, !f623

INSPECTION BURNER AND SPARK GAP

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p519, ?520, ?522

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p2979, !f2980

RESISTANCE GAS VALVE HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB
REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p1950, !f1964

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p532, !f533

INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHANGER FLUEWAYS

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: !p3010, ?3011, ?3013, ?3015

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p600, !f605

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p597, !f598

INSPECTION BURNER

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p596, !f604

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR CN10 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p2042, !f2043

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p90, !f91

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p78, !f79

OBSERVATION SYSTEM PRESSURE

Next: p1657, !f1685

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p422, !f428

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p2308, !f2322

PRESSURE EXPANSION VESSEL

APPLIANCE DRAINED AND DISCHARGED

Next: !p879, !f880

INSPECTION CONDENSATE PIPE

Next: p3123, !f3142

OBSERVATION TURN OFF EXTERNAL SENSOR IN PARAMETER 4-2-1

Next: !p971, !f972

RESISTANCE UNDERFLOOR HEATING THERMOSTAT

REMOVE CONNECTOR CN52 FROM THE MAIN PCB

Next: !p979, f1790

System Information

  • Total Tests: 596
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control