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 CLAS / E COMBI HE EVO

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, ?2410

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, f3613

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

OK TO BE BLANK

Next: &nff, f3651

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, f966

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 MAIN PCB ERROR FAULT CODE 303, 305, 306 AND 307

OK TO BE BLANK

Next: &nff, !f3219

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 AND MENU 0

Next: &nff, !f1016

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

HEADER FOR CH RETURN TEMP PROBE ERROR CODE 112

OK TO BE BLANK

Next: &nff, f1166

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 2 L/MIN

Next: &51, f2522

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE INLET TEST POINT

Next: &2002, !f2001

OPERATION DHW

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

HEADER FOR ERROR CODE 201 / 203 - INCORRECT BOILER VERSION

OK TO BE BLANK

Next: &nff, f2702

PARAMETER INFORMATION - NEW PCB FITTED

Next: &1092, !f3087

HEADER FOR SERVICE REMINDER ERROR CODE 3P9

OK TO BE BLANK

Next: &nff, f3522

HEADER FOR ERROR CODE 201 INCORRECT BOILER VERSION

Next: &nff, f3568

ERROR CODE 610

HARNESS - SENSORS

Next: End

PARAMETER INFO

Z REDIRECTION

Next: End

FAULT CODE 108

SYSTEM PRESSURE

Next: End

ERROR CODE 304

PCB

Next: End

ERROR CODE 302

PCB

Next: End

ERROR CODE 302

WIRING - DISPLAY

Next: End

ERROR CODES 1

Z REDIRECTION

Next: End

NO DISPLAY

FUSE (FUSED SPUR)

Next: End

TEMP PROBE ERROR CODE

PROBE - TEMPERATURE - CH (RETURN)

Next: End

TEMP PROBE ERROR CODE

PROBE - TEMPERATURE - CH (FLOW)

Next: End

ERROR CODE 502

GAS VALVE

Next: End

TEST FUNCTION ACTIVATION

Z REDIRECTION

Next: End

FAULT CODE 108

PARAMETER DEVICE INDICATOR FOR HEATING CIRCUIT PRESSURE

Next: End

FAULT CODE 108

GAUGE - PRESSURE

Next: End

FAULT CODE 108

CABLE - FLOW METER / PRESSURE SENSOR

Next: End

PARAMETERS

Z REDIRECTION

Next: End

BURNER DOES NOT IGNITE

CABLE - GAS VALVE / PCB

Next: End

BURNER DOES NOT IGNITE

GAS VALVE & PCB

Next: End

BURNER DOES NOT IGNITE 1

CABLE - 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

PUMP NOT RUNNING

PCB

Next: End

DHW RUNS HOT THEN COLD

SYSTEM PRESSURE

Next: End

NO VOLTAGE TO DIVERTER MOTOR

PCB

Next: End

OPEN CIRCUIT MOTOR NOT MOVING TO DHW POSITION

CABLE - VALVE - 3 WAY

Next: End

NO POWER TO DIVERTER MOTOR

PCB

Next: End

OPEN CIRCUIT MOTOR NOT MOVING TO CH POSITION

CABLE - VALVE - 3 WAY

Next: End

CASE REMOVAL

Z REDIRECTION

Next: End

REACHES TEMP RADS COOL

TAP - SERVICE

Next: End

NO PERMANENT VOLTAGE TO FLOW METER

PCB

Next: End

NOT SENSING DEMAND

CABLE - FLOW METER / PRESSURE SENSOR

Next: End

DHW DEMAND NOT RECOGNISED

TURBINE (METER - FLOW)

Next: End

FOR TYPE DIAG PROCEDURE

Z REDIRECTION

Next: End

ERROR CODE 203

PARAMETER APPLIANCE VERSION

Next: End

FUSE INVESTIGATION

3 WAY VALVE COMPONENTS

Next: End

FUSE INVESTIGATION

CABLE - GAS VALVE

Next: End

FUSE INVESTIGATION

GAS VALVE

Next: End

FUSE INVESTIGATION

MOTOR - 3 WAY VALVE

Next: End

REACHES TEMP RADS COOL

BY-PASS

Next: End

REACHES TEMP RADS COOL

FILTER - WATER

Next: End

SEIZED

CARTRIDGE W/O MOTOR

Next: End

BOILER TO TEMP RADS COOL

PUMP

Next: End

BOILER TO TEMP RADS DO NOT HEAT

Next: End

FAULT CODE 502

GAS VALVE

Next: End

ERROR CODE 502

ELECTRODE - IONISATION

Next: End

BURNER DOES NOT IGNITE

EXCHANGER (MAIN)

Next: End

BURNER DOES NOT IGNITE

PCB

Next: End

PARAMETER GUIDE

Z REDIRECTION

Next: End

IGNITES BUT DOES NOT ESTABLISH

CABLE - IONISATION 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

DHW ON WITH NO DEMAND

PCB

Next: End

FIRES WITH NO DEMAND

PROBE - TEMPERATURE - CH (FLOW)

Next: End

BLANK DISPLAY

PCB

Next: End

BLANK DISPLAY

WIRING - DISPLAY

Next: End

NO DISPLAY

FUSE 2A 250V

Next: End

PUMP NOT RUNNING

CABLE - PUMP

Next: End

CAPACITOR

CABLE - PUMP

Next: End

ERROR CODE 116

UNDERFLOOR HEATING THERMOSTAT LINK

Next: End

ERROR CODE 116

UNDERFLOOR HEATING THERMOSTAT

Next: End

PCB ERROR CODE

PCB

Next: End

ERROR CODE 612

PCB

Next: End

SET TEMP NOT REACHED

PARAMETER MAXIMUM HEATING POWER

Next: End

FAILS TO REACH SET TEMP

PROBE - TEMPERATURE - CH (FLOW)

Next: End

FAILS TO REACH SET TEMP

PROBE - TEMPERATURE - CH (RETURN)

Next: End

FAILS TO REACH SET TEMP

SYSTEM PRESSURE

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

FILTER - WATER

Next: End

DHW RUNS HOT THEN COLD

TEMPERATURE PROBE FITMENT

Next: End

POOR DHW TEMP RISE

SYSTEM PRESSURE

Next: End

POOR DHW TEMP RISE

PROBE - TEMPERATURE - CH (FLOW)

Next: End

POOR DHW TEMP RISE

PROBE - TEMPERATURE - CH (RETURN)

Next: End

POOR DHW TEMP RISE

PUMP

Next: End

POOR DHW TEMP RISE

EXTERNAL MIXING

Next: End

POOR DHW TEMP RISE

FILTER - WATER

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

POOR HW

PARAMETER DHW POWER

Next: End

FAN NOT RUNNING

PROBE - TEMPERATURE - CH (FLOW)

Next: End

DHW TOO HOT

PROBE - TEMPERATURE - CH (FLOW)

Next: End

DHW TOO HOT

PROBE - TEMPERATURE - CH (RETURN)

Next: End

FIRES WITH NO DEMAND

PROBE - TEMPERATURE - CH (RETURN)

Next: End

FAN NOT RUNNING

PROBE - TEMPERATURE - CH (RETURN)

Next: End

DOES NOT RESPOND TO CH DEMAND

PCB

Next: End

NO CH 2

TIMECLOCK

Next: End

NO CH 2

CABLE - TIMECLOCK

Next: End

DOES NOT RESPOND TO CH DEMAND 1

PCB

Next: End

DOES NOT RESPOND TO CH DEMAND 4

PCB

Next: End

DOES NOT RESPOND TO CH DEMAND 2

PCB

Next: End

NO CH 1

TIMECLOCK

Next: End

NO CH 1

CABLE - TIMECLOCK

Next: End

DOES NOT RESPOND TO CH DEMAND 5

PCB

Next: End

NO CH 3

TIMECLOCK

Next: End

NO CH 3

CABLE - TIMECLOCK

Next: End

BURNER DOES NOT IGNITE

CABLE - IGNITOR

Next: End

FUSE INVESTIGATION

IGNITOR

Next: End

FAN DOES NOT RUN

CABLE - FAN

Next: End

FAN ERROR CODE

CABLE - FAN

Next: End

NOT RUNNING WITH DEMAND

FAN ASSEMBLY

Next: End

FAN DOES NOT RUN

PCB

Next: End

ERROR CODE 612

FAN ASSEMBLY

Next: End

FAN ERROR CODE

PCB

Next: End

ERROR CODE 3P9

PCB

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BURNER DOES NOT IGNITE

PIPE SILICONE

Next: End

NO PUMP OVERRUN

PCB

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

GAS PRESSURE INLET

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

PIPE SILICONE

Next: End

ERROR CODE 201

PARAMETER APPLIANCE VERSION

Next: End

BURNER ESTABLISHES THEN BAFFLES

GAS PRESSURE INLET

Next: End

BURNER IGNITES BUT BAFFLES

PIPE SILICONE

Next: End

DOES NOT IGNITE

FLUE

Next: End

DOES NOT IGNITE DROP SEEN

SILENCER

Next: End

NO CH 4

PCB - DISPLAY

Next: End

FAILED GAS RATE POOR DHW TEMP

EXCHANGER (MAIN)

Next: End

OVERHEAT

SYSTEM PRESSURE

Next: End

OVERHEAT

GAUGE - PRESSURE

Next: End

OVERHEAT FAULT CODE

TAP - SERVICE

Next: End

OVERHEAT ERROR CODE

PROBE - TEMPERATURE - CH (FLOW)

Next: End

OVERHEAT ERROR CODE

PROBE - TEMPERATURE - CH (RETURN)

Next: End

PUMP NOT RUNNING FAULT CODE 101

PCB

Next: End

PUMP NOT RUNNING FAULT CODE 101

CABLE - PUMP

Next: End

PUMP NOT RUNNING 2

CABLE - PUMP

Next: End

OVERHEAT

PUMP

Next: End

PUMP OVERRUN NOT WORKING

PCB

Next: End

OVERHEAT

EXCHANGER (MAIN)

Next: End

OVERHEAT

BY-PASS

Next: End

OVERHEAT

FILTER - WATER

Next: End

OVERHEAT ERROR CODE

PCB

Next: End

OVERHEAT ERROR CODE

TEMPERATURE PROBE FITMENT

Next: End

CIRCULATION ERROR CODES

PROBE - TEMPERATURE - CH (FLOW)

Next: End

CIRCULATION ERROR CODES

PROBE - TEMPERATURE - CH (RETURN)

Next: End

CIRCULATION ERROR CODES

SYSTEM PRESSURE

Next: End

INSUFFICIENT CIRC

GAUGE - PRESSURE

Next: End

INSUFFICIENT CIRCULATION FAULT CODE

TAP - SERVICE

Next: End

PUMP NOT RUNNING FAULT CODE 102

PCB

Next: End

PUMP NOT RUNNING FAULT CODE 102

CABLE - PUMP

Next: End

PUMP NOT RUNNING 1

CABLE - PUMP

Next: End

CIRCULATION ERROR CODES

PUMP

Next: End

CIRCULATION ISSUES

EXCHANGER (MAIN)

Next: End

CIRCULATION ERROR CODES

BY-PASS

Next: End

CIRCULATION ERROR CODES

FILTER - WATER

Next: End

FUSE INVESTIGATION

CABLE - PUMP

Next: End

FUSE INVESTIGATION

FAN ASSEMBLY

Next: End

ON WITH NO DEMAND 3

PCB

Next: End

ON WITH NO DEMAND 2

PCB

Next: End

CIRCULATION ERROR CODES

TEMPERATURE PROBE FITMENT

Next: End

INSUFFICIENT CIRC

PROBE - TEMPERATURE - CH (RETURN)

Next: End

INSUFFICIENT CIRC

PROBE - TEMPERATURE - CH (FLOW)

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

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

VENTURI

Next: End

REACHES TEMP RADS COOL

SYSTEM PRESSURE

Next: End

EXCESSIVE SYSTEM PRESSURE RISE

VESSEL - EXPANSION

Next: End

ERROR CODE 114

PCB

Next: End

FAULT CODE 114

PCB

Next: End

ERROR CODE 610

PCB

Next: End

ERROR CODE 610

THERMAL FUSE

Next: End

ERROR CODE 303 RESETS CONFIRM BOILER OP

Z REDIRECTION

Next: End

ERROR CODE 302

PCB - DISPLAY

Next: End

ERROR CODES

Z REDIRECTION

Next: End

NO DISPLAY

Next: End

FUSE FURTHER INVESTIGATION

Z REDIRECTION

Next: End

TEMP PROBE ERRPR CODE

PCB

Next: End

TEMP PROBE ERROR CODE

HARNESS - SENSORS

Next: End

ERROR CODE 110

PCB

Next: End

TEMP PROBE FAULT CODE

HARNESS - SENSORS

Next: End

FAULT CODE 108

PCB

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

BURNER DOES NOT IGNITE 2

PCB

Next: End

POOR FLOW RATE

HEAT EXCHANGER - WATER / WATER

Next: End

PASSING

CARTRIDGE W/O MOTOR

Next: End

NOT MOVING TO DHW POSITION

MOTOR - 3 WAY VALVE

Next: End

NOT MOVING TO CH POSITION

MOTOR - 3 WAY VALVE

Next: End

POOR FLOW RATE

DHW FILTER (METER - FLOW)

Next: End

RESTRICTED BLOCKED OR JAMMED

TURBINE (METER - FLOW)

Next: End

NOT SENSING DEMAND

PCB

Next: End

DHW DEMAND NOT RECOGNISED

SENSOR

Next: End

ERROR CODE 203

PCB

Next: End

FUSE INVESTIGATION

PCB (FUSE BLOWN)

Next: End

FUSE INVESTIGATION

CABLE - VALVE - 3 WAY

Next: End

BOILER UP TO TEMP RADS COOL

Next: End

ERROR CODE 502

PCB

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

BURNER DOES NOT IGNITE

IGNITOR

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

BURNER IGNITES BUT DOES NOT ESTABLISH

BURNER

Next: End

INCORRECT GAP TO BURNER

ELECTRODE - IONISATION

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

PCB

Next: End

DRIPPING TAP

DHW SYSTEM

Next: End

ON WITH NO DEMAND

SENSOR

Next: End

APPLIANCE FIRES WITH NO DEMAND

FROST PROTECTION

Next: End

BLANK DISPLAY

PCB - DISPLAY

Next: End

FUSE FURTHER INVESTIGATION 1

Z REDIRECTION

Next: End

SEIZED

PUMP

Next: End

FAULT CODE 116

PCB

Next: End

ERROR CODE 116

PCB

Next: End

FAULT CODE 612

FAN ASSEMBLY

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

PCB

Next: End

DHW RUNS HOT THEN COLD

PCB

Next: End

RESTRICTED DHW RUNS HOT THEN COLD

HEAT EXCHANGER - WATER / WATER

Next: End

RESTRICTED DHW RUNS HOT THEN COLD

EXCHANGER (MAIN)

Next: End

POOR DHW TEMP RISE

HEAT EXCHANGER - WATER / WATER

Next: End

DOES NOT RESPOND TO CH

Next: End

POOR DHW TEMP RISE

EXCHANGER (MAIN)

Next: End

POOR DHW TEMP RISE

PCB

Next: End

FAILED GAS RATE POOR DHW TEMP

VENTURI

Next: End

FAILED GAS RATE POOR DHW TEMP

FAN ASSEMBLY

Next: End

FAN DOES NOT RUN

FAN ASSEMBLY

Next: End

DHW TOO HOT

PCB

Next: End

FIRES WITH NO DEMAND 1

PCB

Next: End

FAN NOT RUNNING

PCB

Next: End

DOES NOT RESPOND TO CH DEMAND

EBUS CONTROLS

Next: End

NO CH 2

PCB - DISPLAY

Next: End

DOES NOT RESPOND TO CH DEMAND 1

EBUS CONTROLS

Next: End

DOES NOT RESPOND TO CH 2

Next: End

NO CH 1

PCB - DISPLAY

Next: End

DOES NOT RESPOND TO CH DEMAND 2

EBUS CONTROLS

Next: End

DOES NOT RESPOND TO CH 1

Next: End

NO CH 3

PCB - DISPLAY

Next: End

FUSE INVESTIGATION

CABLE - IGNITOR

Next: End

ERROR CODE 3P9

MAINTENANCE INTERVAL SURPASSED

Next: End

ERROR CODE 201

PCB

Next: End

FAILED GAS RATE

PCB

Next: End

OVERHEAT ERROR CODE 1

PCB

Next: End

SEIZED FAULT CODE 101

PUMP

Next: End

OVERHEAT

HEAT EXCHANGER - WATER / WATER

Next: End

OVERHEAT

Next: End

OVERHEAT FAULT CODE

OVERHEAT

Next: End

CIRCULATION ERROR CODE

PCB

Next: End

SEIZED FAULT CODE 102

PUMP

Next: End

CIRCULATION ISSUES

HEAT EXCHANGER - WATER / WATER

Next: End

CIRCULATION ERROR CODES

PCB

Next: End

CIRCULATION ISSUES

Next: End

FUSE INVESTIGATION

PUMP

Next: End

FUSE INVESTIGATION

CABLE - FAN

Next: End

ON WITH NO DEMAND 1

EBUS CONTROLS

Next: End

ON WITH NO DEMAND 1

Next: End

BURNER DOES NOT IGNITE 1

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE 1

EARTH WIRE

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

ERROR CODE SHOWN

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1098

DISPLAY DOES NOT OPERATE

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1102

PUMP RUNS OR APPLIANCE ATTEMPTS TO FIRE

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1654

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

PUMP MANIFOLD BLOCKED

CHARACTERISTIC TEST FROM INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

Next: !p1901

LOW WATER PRESSURE SWITCH BLOCKED

CHARACTERISTIC TEST FROM INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

Next: !p1903

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

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 DOES NOT RESPOND TO A CH DEMAND

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3487

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

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

FROST PROTECTION ACTIVATED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p3180

CH DEMAND ACTIVATED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p3839

TEMPERATURE DIFFERENTIAL STILL EXCESSIVE

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: p3248

APPLIANCE DOES NOT RESPOND TO A CH DEMAND

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3474

TEMPERATURE DIFFERENTIAL STILL EXCESSIVE

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: p3336

APPLIANCE DOES NOT RESPOND TO A CH DEMAND

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3338

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

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p3366

FAN RESTRICTED AND / OR BLOCKED / IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p3368

IGNITION ELECTRODE AND LEAD UNSATISFACTORY

CHARACTERISTIC TEST FROM RESISTANCE IGNITION ELECTRODE, LEAD AND EARTH WIRE

Next: !p3848

EARTH WIRE UNSATISFACTORY

CHARACTERISTIC TEST FROM RESISTANCE IGNITION ELECTRODE, LEAD AND EARTH WIRE

Next: !p3850

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 15:11:36 2202_1_50_1 25/04/2022 13:31:01

01/04/2022 10:48:05

Next: End

RESISTANCE THERMOFUSE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p1001, f1002

RESISTANCE HARNESS THERMOFUSE

REMOVE CONNECTOR CN3 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE THERMOFUSE

Next: !p1003, !f1004

RESISTANCE HARNESS FAN

REMOVE CONNECTOR CN4 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FAN

Next: p1007, !f3504

RESET APPLIANCE - ERROR CODE 304

Next: !p1061, !f1062

VOLTAGE TO DISPLAY PCB

{GAINPCBACS}
REMOVE DISPLAY HARNESS CONNECTOR CN14 FROM THE MAIN PCB AND MAKE SAFE

Next: p1079, !f1080

RESISTANCE FUSE (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: !p1105, f1106

FUSE FURTHER INVESTIGATION (FUSED SPUR)

Next: !p1107, !f1108

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p1167, f1168

RESISTANCE RETURN TEMPERATURE PROBE

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

Next: !p1169, !f1170

RESISTANCE FLOW TEMPERATURE PROBE

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

Next: !p1173, !f1174

RESISTANCE LOW WATER PRESSURE SWITCH HARNESS

REMOVE CONNECTOR CN8 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE WATER PRESSURE SWITCH

Next: p1898, !f1904

INSPECTION DHW ISOLATION VALVE

Next: p1992, !f1993

RESISTANCE HARNESS FAN

REMOVE CONNECTOR CN4 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FAN

Next: p2022, !f3503

VOLTAGE TO DIVERTER MOTOR - DHW DEMAND

Next: p2139, !f2140

VOLTAGE TO DIVERTER MOTOR - CH DEMAND

Next: p2162, !f2163

VOLTAGE FLOW METER - DEMAND

TURN HOT WATER TAP O

Next: !p2523, f2524

VOLTAGE FLOW METER - SUPPLY

ENSURE NO DEMANDS
REMOVE CONNECTOR CN8 FROM THE MAIN PCB AND MAKE SAFE

Next: p2525, !f2526

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

Next: !p2703, !f2704

INSPECTION DIVERTER MOTOR / VALVE FOR FUSE FURTHER INVESTIGATION

REMOVE ELECTRICAL CO

Next: p2834, !f2835

RESISTANCE SPARK GENERATOR FOR FUSE INVESTIGATION

DISCONNECT ELECTRICAL CONNECTOR FROM THE SPARK GENERATOR

Next: !p3501, !f3502

RESISTANCE DIVERTER MOTOR FOR FUSE INVESTIGATION

REMOVE THE ELECTRICA

Next: !p2850, !f2851

VOLTAGE PUMP AT PCB

REMOVE THE PUMP CABLE CONNECTOR FROM THE PCB AND MAKE SAFE

Next: p655, !f2041

VOLTAGE SPARK GENERATOR AT PCB

REMOVE THE SPARK GENERATOR CONNECTOR FROM THE PCB MAKE SAFE

Next: p2997, !f2998

OBSERVATION REMOVE FLOW SENSOR CONNECTOR

DISCONNECT THE ELECTRICAL CONNECTOR FROM THE FLOW SENSOR AND MAKE SAFE

Next: !p3174, !f3175

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3183, !f3184

FUSE FURTHER INVESTIGATION (PCB FUSE)

Next: !p3202, !f3203

RESISTANCE UNDERFLOOR HEATING THERMOSTAT LINK

{GAINPCBACS}
REMOVE UNDERFLOOR HEATING CONNECTOR MARKED 'TA2' / FLOOR

Next: !p3214, !f3215

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p3246, ?3247, ?3249

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p3334, ?3335, ?3337

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p3357, !f3358

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3379, !f3380

DISCONNECT EXTERNAL CONTROLS (BUS)

REMOVE CONNECTOR BUS FROM THE PCB

Next: !p3465, !f3466

OBSERVATION INTERNAL CLOCK FITTED

Next: p3468, !f3473

DISCONNECT EXTERNAL CONTROLS (BUS)

REMOVE CONNECTOR BUS FROM THE PCB

Next: !p3477, !f3478

OBSERVATION INTERNAL CLOCK FITTED

Next: p3481, !f3482

DISCONNECT EXTERNAL CONTROLS (BUS)

REMOVE CONNECTOR BUS FROM THE PCB

Next: !p3490, !f3491

OBSERVATION INTERNAL CLOCK FITTED

Next: p3494, !f3610

OBSERVATION HAS THE MAINTENANCE INTERVAL SURPASSED

Next: !p3523, !f3524

OBSERVATION CHECK PARAMETER 2-2-8 BOILER VERSION - ERROR CODE 201

Next: !p3569, !f3570

RESET APPLIANCE - ERROR CODE 101

ENSURE NO DEMANDS ARE PRESENT
ENSURE APPLIANCE IS COOL

Next: p3685, f3722

RESET APPLIANCE - INSUFFICIENT CIRCULATION ERROR CODES

ENSURE NO DEMANDS ARE PRESENT
ENSURE APPLIANCE IS COOL

Next: p3755, f3788

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3723, !f3724

VOLTAGE PUMP AT PCB

REMOVE THE PUMP CABLE CONNECTOR FROM THE PCB AND MAKE SAFE

Next: p3732, !f3733

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p3744, !f3745

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p3748, !f3749

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3789, !f3790

VOLTAGE PUMP AT PCB

REMOVE THE PUMP CABLE CONNECTOR FROM THE PCB AND MAKE SAFE

Next: p3804, !f3805

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p3814, !f3815

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p3818, !f3819

RESISTANCE HARNESS PUMP

REMOVE THE 4 WIRE PU

Next: !p3834, !f3835

RESISTANCE FAN FOR FUSE INVESTIGATION

REMOVE CONNECTOR FROM FAN ASSEMBLY

Next: !p3837, !f3838

DISCONNECT EXTERNAL CONTROLS (BUS) - SELF CHECK

REMOVE CONNECTOR BUS FROM THE PCB
ENSURE NO DEMANDS ARE PRESENT

Next: !p3842, !f3843

RESISTANCE GAS VALVE HARNESS

REMOVE CONNECTOR CN2 FROM THE PCB
REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p1943, !f1944

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p1171, f1172

OBSERVATION SYSTEM PRESSURE

Next: p1031, !f1032

OBSERVATION EXTERNAL SENSOR

Next: p969, !f970

OBSERVATION UNDERFLOOR HEATING

Next: p3212, f3213

INSTALLATION TIGHTNESS TEST

Next: p1776, !f1778

RESISTANCE FAN

REMOVE CONNECTOR CN4 FROM THE PCB

Next: p3515, !f3519

OBSERVATION SYSTEM PRESSURE RISE

Next: p1853, !f1865

RESISTANCE HARNESS DISPLAY PCB

DISCONNECT THE DISPL

Next: !p1086, !f1091

ERROR CODES

Next: !p1099, !f1100

VOLTAGE MAINS POWER INPUT AT PCB

{GAINPCBACS}

Next: p1103, f1104

RESISTANCE FUSE PCB

REMOVE FUSE FROM PCB

Next: p3196, f3201

OBSERVATION SYSTEM PRESSURE

Next: p800, !f812

OBSERVATION DISPLAY

ENSURE NO DEMANDS

Next: p3171, ?3176, ?3178

PRESSURE STANDING RETURN

ATTACH PRESSURE GAUG

Next: p2971, !f2972

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

REMOVE CONNECTOR CN8 FROM THE PCB

Next: p1854, f1866

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

Next: !p1863, !f1864

INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

APPLIANCE DRAINED AN

Next: !p1899, ?1900, ?1902

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 FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3386, !f3387

OBSERVATION SYSTEM PRESSURE

Next: p3268, !f3322

OBSERVATION DIVERTER MOTOR SPINDLE - DHW POSITION

REMOVE LOCKING PIN A

Next: !p2137, f2138

OBSERVATION SYSTEM PRESSURE

Next: p2075, !f2092

RESISTANCE FAN

REMOVE CONNECTOR CN4 FROM THE PCB

Next: p3505, !f3513

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p3237, !f3267

RESISTANCE HARNESS DIVERTER MOTOR

REMOVE CONNECTOR CN11 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 CN11 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTOR FROM THE DIVERTER MOTOR

Next: !p2164, !f2165

PUMP LIMPET

Next: p2921, !f2935

RESISTANCE HARNESS FLOW METER

REMOVE CONNECTOR CN8 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FLOW METER

Next: p2527, !f2528

INSPECTION FLOW TURBINE

ISOLATE THE COLD WAT

Next: !p2529, !f2530

RESISTANCE DIVERTER MOTOR AND HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN11 FROM THE PCB

Next: p2836, f2849

RESISTANCE PUMP AND HARNESS FOR FUSE INVESTIGATION

REMOVE THE 4 WIRE CONNECTOR FROM THE PCB

Next: p3823, f3833

RESISTANCE GAS VALVE HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN2 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 2 WIRE SPARK GENERATOR CONNECTOR FROM THE PCB

Next: !p2845, f2846

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p2916, !f2917

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p2918, !f2919

INSPECTION EXTERNAL BYPASS

Next: p2143, !f2936

RESISTANCE IONISATION ELECTRODE

REMOVE IONISATION EL

Next: !p2973, !f2974

INSPECTION FLUE

Next: p3593, !f3607

RESISTANCE HARNESS SPARK GENERATOR

REMOVE THE 2 WIRE CONNECTOR FROM THE PCB
DISCONNECT THE ELECTRICAL LEAD FROM THE SPARK GENERATOR

Next: p2999, !f3500

RESISTANCE IGNITION ELECTRODE, LEAD AND EARTH WIRE

REMOVE THE IGNITION

Next: !p3001, ?3003, ?3005

RESISTANCE IONISATION CABLE

REMOVE IONISATION LE

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

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 ISOLATE COLD FEED TO APPLIANCE

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

Next: !p3172, f3173

TEMPERATURE FLOW

ATTACH A TEMPERATURE

Next: !p3181, f3182

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p3401, !f3402

VOLTAGE TO DISPLAY PCB

{GAINPCBACS}
REMOVE DISPLAY HARNESS CONNECTOR CN14 FROM THE MAIN PCB AND MAKE SAFE

Next: p3197, !f3198

RESISTANCE HARNESS DISPLAY PCB

DISCONNECT THE DISPL

Next: !p3199, !f3200

CAPACITANCE PUMP

MULTIMETER SET TO CA

Next: !p3206, !f3207

RESISTANCE SENSOR UNDERFLOOR HEATING

{GAINPCBACS}
REMOVE UNDERFLOOR HEATING CONNECTOR MARKED 'TA2 / FLOOR'

Next: !p3216, !f3217

VOLTAGE FAN DEMAND

REMOVE FAN CONNECTOR AND MAKE SAFE

Next: !p3221, !f3222

OBSERVATION MAXIMUM HEATING POWER - PARAMETER 2-3-1

Next: p3225, !f3226

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3227, !f3228

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p3229, !f3230

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3238, !f3239

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3240, !f3241

PUMP LIMPET

Next: p3242, !f3243

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p3244, f3245

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p3265, !f3266

OBSERVATION MAXIMUM DHW POWER - PARAMETER 2-3-2

Next: p3323, !f3373

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3324, !f3325

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3326, !f3327

PUMP LIMPET

Next: p3328, !f3329

TEMPERATURE COMPARISON OF HOT WATER - EXTERNAL MIXING TEST

Next: p3330, !f3331

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p3332, f3333

APPLIANCE OUTPUT

SET APPLIANCE TO 100% OUTPUT

Next: !p3355, f3356

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p3353, !f3354

OBSERVATION WHAT TYPE OF EXTERNAL CONTROLS ARE FITTED

{GAINPCBACS}

Next: p3339, f3464

BYPASS EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p3345, f3467

INSPECTION FLUE

Next: p3359, !f3360

INSPECTION CONDENSATE PIPE

Next: p3361, !f3362

INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

REMOVE BURNER DOOR ASSEMBLY C/W FAN
REMOVE AIR / GAS MIXER (VENTURI) FROM THE FAN

Next: p3363, ?3365, ?3367

INSPECTION BURNER

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p3369, !f3370

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p3611, !f3612

VOLTAGE FAN DEMAND

REMOVE FAN CONNECTOR AND MAKE SAFE

Next: !p3377, f3378

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p3404, !f3405

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p3388, !f3389

RESISTANCE INTERNAL CLOCK

GAIN ACCESS TO THE I

Next: p3469, !f3470

RESISTANCE HARNESS INTERNAL CLOCK

REMOVE THE CLOCK HARNESS FROM THE DISPLAY PCB
DISCONNECT THE LEADS FROM THE CLOCK

Next: !p3471, !f3472

OBSERVATION WHAT TYPE OF EXTERNAL CONTROLS ARE FITTED

{GAINPCBACS}

Next: p3475, f3476

BYPASS EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p3479, f3480

RESISTANCE INTERNAL CLOCK

GAIN ACCESS TO THE I

Next: p3483, !f3484

RESISTANCE HARNESS INTERNAL CLOCK

REMOVE THE CLOCK HARNESS FROM THE DISPLAY PCB
DISCONNECT THE LEADS FROM THE CLOCK

Next: !p3485, !f3486

OBSERVATION WHAT TYPE OF EXTERNAL CONTROLS ARE FITTED

{GAINPCBACS}

Next: p3488, f3489

BYPASS EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p3492, f3493

RESISTANCE INTERNAL CLOCK

GAIN ACCESS TO THE I

Next: p3496, !f3497

RESISTANCE HARNESS INTERNAL CLOCK

REMOVE THE CLOCK HARNESS FROM THE DISPLAY PCB
DISCONNECT THE LEADS FROM THE CLOCK

Next: !p3498, !f3499

VOLTAGE FAN

{GAINPCBACS}
ENSURE NO DEMANDS

Next: p3376, !f3514

VOLTAGE FAN

{GAINPCBACS}
ENSURE NO DEMANDS

Next: p3220, !f3520

INSPECTION IMPULSE TUBE

Next: p526, !f3542

INSPECTION IMPULSE TUBE

Next: p90, !f3566

INSPECTION IMPULSE TUBE

Next: p78, !f3592

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p504, !f3608

OBSERVATION SYSTEM PRESSURE

Next: p3686, !f3687

OBSERVATION SYSTEM PRESSURE RISE

Next: p3688, !f3689

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p3690, !f3691

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p3729, !f3754

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p3725, !f3726

OBSERVATION PUMP RUNS

Next: p3730, f3731

PUMP LIMPET

Next: p3738, !f3739

RESISTANCE HARNESS PUMP

REMOVE THE 4 WIRE PU

Next: p3734, !f3735

CAPACITANCE PUMP

MULTIMETER SET TO CA

Next: !p3736, !f3737

OBSERVATION PUMP OVERRUN FOR OVERHEAT

Next: p3740, !f3741

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p3742, f3743

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p3746, f3747

OBSERVATION DOES OVERHEAT OCCUR AT MAX TEMPERATURE

ATTACH A TEMPERATURE CLAMP TO THE FLOW PIPE

Next: !p3752, !f3753

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p3750, !f3751

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p3851, !f3879

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: !p3791, !f3792

OBSERVATION SYSTEM PRESSURE

Next: p3796, !f3797

OBSERVATION SYSTEM PRESSURE RISE

Next: p3798, !f3799

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p3800, !f3801

OBSERVATION PUMP RUNS

Next: p3802, f3803

PUMP LIMPET

Next: p3810, !f3811

RESISTANCE HARNESS PUMP

REMOVE THE 4 WIRE PU

Next: p3806, !f3807

CAPACITANCE PUMP

MULTIMETER SET TO CA

Next: !p3808, !f3809

TEMPERATURE DIFFERENTIAL SECONDARY HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: p3812, f3813

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH A TEMPERATURE

Next: !p3816, f3817

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p3820, !f3821

RESISTANCE FAN AND HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN4 FROM THE PCB

Next: p2837, f3836

OBSERVATION WHAT TYPE OF EXTERNAL CONTROLS ARE FITTED

{GAINPCBACS}

Next: p3840, f3841

DISCONNECT EXTERNAL CONTROLS (TA1)

REMOVE CONNECTOR TA1 FROM THE PCB
ENSURE NO DEMANDS ARE PRESENT

Next: !p3844, !f3845

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3881, !f3910

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p3795, !f3909

INSPECTION CONDENSATE PIPE

Next: p77, !f410

INSPECTION FLUE

Next: p585, !f593

INSPECTION CONDENSATE PIPE

Next: p472, !f473

VOLTAGE GAS VALVE AT PCB

REMOVE CONNECTOR CN2 FROM THE PCB AND MAKE SAFE

Next: p479, f499

PRESSURE GAS INLET DROP

ATTACH PRESSURE GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p503, ?495, ?497

INSPECTION FLUE

Next: p3525, !f3541

OBSERVATION SPARKING OCCURS

DISCONNECT THE IGNIT

Next: p2981, f2996

RESISTANCE IGNITION ELECTRODE, LEAD AND EARTH WIRE

REMOVE THE IGNITION

Next: p515, ?3847, ?3849

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN

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 CN2 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

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

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN

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 THE 4 WIRE PU

Next: p3204, !f3205

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE INLET TEST POINT

Next: p3543, !f3565

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE INLET TEST POINT

Next: p3579, !f3591

OBSERVATION SYSTEM PRESSURE

Next: p3224, !f3231

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

System Information

  • Total Tests: 559
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control