XSol Diagnostic System

IDEAL MEXICO HE 30 & 36

GLOBALLY REPLACED

Next: &1, *

NO FAULT FOUND

Next: nff

IDEAL MEXICO HE 30 & 36

Next: &3, !f2

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM ONE OF THE LINKS BELOW WHICH TYPE OF XSOL DIAGNOSTIC PROCEDURE YOU REQUIRE:

Next: &5, !f4

POWER UP

{ONOFFSWITCHON}
NO DEMANDS

Next: &704, f6

BURNER IGNITES AND ESTABLISHES DHW DEMAND

{ONOFFSWITCHON}

Next: &251, ?92, ?94, ?96

FAN RUNS

{ONOFFSWITCHON}

Next: &89, f1070

DISPLAY REACTS TO DEMAND

{ONOFFSWITCHON}

Next: &164, f186

OPERATION CH

BOILER THERMOSTAT SET TO MAX

Next: &1287, ?191, ?193, ?195, ?197

DOES BOILER REACT TO CH DEMAND

{ONOFFSWITCHON}

Next: &190, !f726

FAULT CODES

Next: &nff, !f620

LE AND HE INVESTIGATION ALSO FOR HF

Next: &nff, f262

H1 INVESTIGATION

Next: &nff, f274

H4 INVESTIGATION

Next: &nff, f281

HN INVESTIGATION

Next: &nff, f290

FUSE FURTHER INVESTIGATION FOR PCB FUSE

Next: &nff, f315

FUSE FURTHER INVESTIGATION FOR MAINS FUSE

Next: &nff, f909

OVERHEAT FURTHER INVESTIGATION

Next: &nff, f363

BOILER ENTERS STANDBY CORRECTLY

{ONOFFSWITCHON}
ENSURE NO DEMANDS

Next: &166, f705

H3/H5 INVESTIGATION

OK TO BE BLANK

Next: &nff, f715

HB OR LB

OK TO BE BLANK

Next: &nff, !f998

DASH/DOT

OK TO BE BLANK

Next: &nff, f1017

OBSERVATION ANTI CYCLE DELAY

{ONOFFSWITCHON}
BOILER STAT SET TO 1/3 POSITION

Next: &1297, !f1289

OPERATION DHW

Next: &nff, !f1298

HEADER FOR QADAI FAN RESISTANCE

INTENTIONALLY BLANK-HEADER FOR QADAI

Next: &nff, f1427

HEADER FOR QADAI GAS VALVE VOLTAGE

INTENTIONALLY BLANK-HEADER FOR QADAI

Next: &nff, f1431

HEADER FOR QADAI GAS VALVE RESISTANCE

INTENTIONALLY BLANK-HEADER FOR QADAI

Next: &nff, f1435

HEADER FOR QADAI FLUE SENSOR

INTENTIONALLY BLANK-HEADER FOR QADAI

Next: &nff, f1439

HEADER FOR QADAI FLOW THERMISTOR

INTENTIONALLY BLANK-HEADER FOR QADAI

Next: &nff, f1443

LITE DIAGNOSTIC

DIAGNOSIS RELIES ON

Next: &nff, !f1447

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f1449

BURNER IGNITES BUT BAFFLES

KIT - S TRAP AND CONDENSATE PIPEWORK

Next: End

DASH/DOT FAULT CODE

KIT - USER CONTROLS

Next: End

BURNER BAFFLES

HEAT ENGINE

Next: End

BAFFLES OR LIFTS OFF

KIT - INJECTOR & HOUSING

Next: End

CALIBBRATION

KIT - THERMISTOR - BOILER CONTROL

Next: End

FAN NOT RUNNING

KIT- THERMISTOR - DRY FIRE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

GAS PRESSURE INLET

Next: End

FAN DOES NOT RUN

KIT- THERMISTOR - DRY FIRE

Next: End

FAN DOES NOT RUN

KIT - THERMISTOR - BOILER CONTROL

Next: End

NO SWITCHED LIVE AT STARTUP

Next: End

BLOWN STANDBY MODE AT POWER UP WITH DISPLAY BOARD

FUSE MAIN PCB

Next: End

ON/OFF SWITCH WITH HARNESS

KIT - MAINS SWITCH C/W HARNESS

Next: End

POWER UP BLANK DISPLAY

PCB AND FAN

Next: End

NO DISPLAY

PCB AND FAN

Next: End

BLANK DISPLAY FAN RUNS

KIT - PCB

Next: End

DISPLAY BOARD POWER UP 2

KIT - PCB

Next: End

POWER UP FAN RUNS WITH DEMAND AT POWER UP

KIT - USER CONTROLS

Next: End

BLANK DISPLAY FAN RUNS

KIT - USER CONTROLS

Next: End

STOPPING DEMAND

KIT - FAN

Next: End

STOPPING FAN DEMAND

HARNESS - WIRING - BOILER

Next: End

FAN DAMAGED PCB

PCB AND FAN

Next: End

FAN DAMAGED PCB 2

PCB AND FAN

Next: End

FAN DAMAGED PCB 3

PCB AND FAN

Next: End

FAN DAMAGED PCB 4

PCB AND FAN

Next: End

BURNER BAFFLES OUT

BURNER

Next: End

FAN DOES NOT RUN 1

HARNESS - FAN

Next: End

FAN DOES NOT RUN 3

HARNESS - FAN

Next: End

NO PERMANENT POWER TO FAN

HARNESS - FAN

Next: End

NO POWER TO FAN

HARNESS - FAN

Next: End

BLOWN STAND BY MODE AT POWER UP WITH DISPLAY BOARD

MAIN FUSE FUSED SPUR F1

Next: End

LE FAULT CODE

SENSOR FITMENT

Next: End

BURNER DOES NOT IGNITE

KIT - GAS VALVE

Next: End

FAN RUNS NO SPARK 2

HARNESS - WIRING - BOILER

Next: End

FAN RUNS NO SPARK 3

HARNESS - WIRING - BOILER

Next: End

NO SWITCHED LIVE AT START UP

HARNESS - WIRING - BOILER

Next: End

SECTION TO CONDENSATE LEVEL SENSOR

HARNESS - WIRING - BOILER

Next: End

PERMANENENT SUPPLY TO CONDENSATE PUMP

HARNESS - WIRING - BOILER

Next: End

NO SWITCHED LIVE AT STARTUP 2

Next: End

NO SWITCHED LIVE AT START UP 2

HARNESS - WIRING - BOILER

Next: End

SECTION TO CONDENSATE LEVEL SENSOR 2

HARNESS - WIRING - BOILER

Next: End

PERMANENENT SUPPLY TO CONDENSATE PUMP 2

HARNESS - WIRING - BOILER

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

GAS PRESSURE INLET

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

KIT - S TRAP AND CONDENSATE PIPEWORK

Next: End

BOILER TEMP LOW SYST TEMP LOW

KIT - THERMISTOR - BOILER CONTROL

Next: End

CH CONTROL

KIT - USER CONTROLS

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

PCB JUMPER SETTINGS

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

KIT - INJECTOR & HOUSING

Next: End

OPERATION CH OK NO REFIRE FAN DOES NOT RUN

KIT - PCB

Next: End

CH OPERATION FAILURE TO REFIRE

Next: End

UNSATISFACTORY DHW OPERATION

Next: End

PCB FUSE BLOWN FOR MAINS

KIT - PCB - FUSE BLOWN

Next: End

BLOWING FUSE

PUMP - CONDENSATE

Next: End

PCB FUSE BLOWN (WITH OPTIONAL CONDENSATE PUMP)

KIT - PCB - FUSE BLOWN

Next: End

BLANK FOR INFORMATION CONDENSATE PUMP OPERATION

Z DIRECTION CHOICE OR CONTINUE

Next: End

BLANK FOR CONDENSATE PUMP INFORMATION 2

Z DIRECTION CHOICE OR CONTINUE

Next: End

SPARKING NOT LIGHTING

GAS PRESSURE INLET

Next: End

NO DROP IN GAS PRESSURE

IMPULSE TUBE

Next: End

FAN RUNS BURNER NOT IGNITE

ELECTRODE - IGNITION

Next: End

BOCKED OR DAMAGED SPARKING OCCURS BURNER DOESNOT IGNITE

KIT - INJECTOR & HOUSING

Next: End

SPARKING NOT LIGHTING

BURNER

Next: End

DIRTY FLUEWAYS

HEAT ENGINE

Next: End

RESTRICTED / BLOCKED STOPPING IGNITION

KIT - S TRAP AND CONDENSATE PIPEWORK

Next: End

RESTRICTED / BLOCKED PREVENTING IGNITION

FLUE

Next: End

WARPED OR HIGH RESISTANCE

BURNER EARTH PIN

Next: End

WARPED OR HIGH RESISTANCE FOR FAULT CODE

BURNER EARTH PIN

Next: End

NEW MODELDAMAGED

LEAD - IGNITION

Next: End

H1 INVESTIGATION 2

KIT - THERMISTOR - BOILER CONTROL

Next: End

OVERHEAT INVESTIGATION

KIT- THERMISTOR - DRY FIRE

Next: End

QADAI

KIT - FAN

Next: End

QADAI NO POWER TO GAS VALVE

KIT - PCB

Next: End

QADAI

KIT - GAS VALVE

Next: End

QADAI

KIT- THERMISTOR - DRY FIRE

Next: End

QADAI

KIT - THERMISTOR - BOILER CONTROL

Next: End

BLANK FOR LITE DIAGNOSTICS

Z DIRECTION

Next: End

BLANK FOR QADAI

Z DIRECTION

Next: End

CASE REMOVAL

DIRECTION CHOICE OR CONTINUE

Next: End

PUMP NOT RUNNING

Next: End

BOILR SHUTS DOWN PREMATURELY CHOPERATION

PUMP

Next: End

BOILER SHUTS DOWN PREMATURLEY BOILER NOISY

Next: End

JUMPER SETTINGS

PCB JUMPER SETTINGS

Next: End

BURNER INJECTOR

KIT - INJECTOR & HOUSING

Next: End

LE AND HE INVESTIGATION

KIT - THERMOSTAT - OVERHEAT

Next: End

LE HE INVESTIGATION

KIT - ELECTRODE - FLAME DETECTION

Next: End

HE LE INVESTIGATION

LEAD DETECTION

Next: End

FAN RUNS

KIT- THERMISTOR - DRY FIRE

Next: End

POLARITY

Next: End

FURTHER INVESTIGATION FUSE F1

KIT - FAN

Next: End

FOR TYPE DIAG PROCEDURE

DIRECTION CHOICE OR CONTINUE

Next: End

OVERHEAT INVESTIGATION

KIT - THERMOSTAT - OVERHEAT

Next: End

OVERHEATING FAILS LIMPET

PUMP

Next: End

OVERHEATING

Next: End

NOT FILLED AND VENTED

SYSTEM CHECKS

Next: End

FUSE BLOWING

KIT - GAS VALVE

Next: End

H1 INVESTIGATION

KIT - THERMISTOR - BOILER CONTROL

Next: End

SUPPLY FAULT AT POWER UP WITH DISPLAY BOARD

Next: End

BOILER NOISY

KIT - THERMISTOR - BOILER CONTROL

Next: End

FOR FAULT CODES PAGE

DIRECTION CHOICE OR CONTINUE

Next: End

OVERHEAT INVESTIGATION

KIT - THERMISTOR - BOILER CONTROL

Next: End

OUT OF CALIBRATION

KIT - THERMOSTAT - OVERHEAT

Next: End

OVERHEATING WHEN NOT

KIT- THERMISTOR - DRY FIRE

Next: End

BOILER NOISY

Next: End

OVERHEAT INVESTIGATION

Next: End

NOISY

SYSTEM CHECKS

Next: End

BOILER TO TEMP RADS COOL

PUMP

Next: End

CH OPERATION

Next: End

BOILER HOT RADS COLD

SYSTEM CHECKS

Next: End

FROST PROTECTION

Next: End

H5 INVESTIGATION

PCB JUMPER SETTINGS

Next: End

BOILER DOES NOT REACT TO CH

Next: End

BURNER IGNITES BUT IS NOISY

IMPULSE TUBE

Next: End

FROST PROTECTION

KIT - THERMISTOR - BOILER CONTROL

Next: End

OVERHEAT

Next: End

BURNER ESTABLISHES THEN BAFFLES

GAS PRESSURE INLET

Next: End

BURNERIGNITES

LEAD DETECTION

Next: End

BURNER IGNITES

KIT - ELECTRODE - FLAME DETECTION

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

FLUE

Next: End

BURNER DOES NOT ESTABLISH

KIT - S TRAP AND CONDENSATE PIPEWORK

Next: End

DOES NOT ESTABLISH

HEAT ENGINE

Next: End

NOT ESTABLISHING

KIT - INJECTOR & HOUSING

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

BURNER

Next: End

OVERHEATING

KIT - USER CONTROLS

Next: End

FUSE BLOWING 2

KIT - GAS VALVE

Next: End

FURTHER INVESTIGATION FUSE F1 2

KIT - FAN

Next: End

OPERATION OK BUT BOILER OVERHEATS

KIT - THERMOSTAT - OVERHEAT

Next: End

FAN RUNS

KIT - THERMOSTAT - OVERHEAT

Next: End

PCB GAS VALVE

Next: End

BURNER BAFFLES OUT

FLUE

Next: End

HB OR LB FAULT CODE

KIT - USER CONTROLS

Next: End

DASH/DOT FAULT CODE

KIT - PCB

Next: End

FAN DOES NOT RUN

HARNESS - WIRING - BOILER

Next: End

FAN DOES NOT RUN 2

HARNESS - WIRING - BOILER

Next: End

FAN

KIT - FAN

Next: End

FAN DOES NOT RUN

KIT - FAN

Next: End

FURTHER INVESTIGATION F1 WITH DISPLAY BOARD

Z DIRECTION CHOICE OR CONTINUE

Next: End

FAN DOES NOT RUN 4

HARNESS - WIRING - BOILER

Next: End

FAN DOES NOT RUN 5

HARNESS - WIRING - BOILER

Next: End

FURTHER IN VESTIGATION F2 WITH DISPLAY BOARD

Z DIRECTION CHOICE OR CONTINUE

Next: End

NO DISPLAY

KIT - USER CONTROLS

Next: End

DISPLAY BOARD POWER UP

KIT - PCB

Next: End

BLANK DISPLAY

KIT - USER CONTROLS

Next: End

BLANK DISPLAY

KIT - PCB

Next: End

DISPLAY BOARD FURTHER INVESTIGATION

DIRECTION CHOICE OR CONTINUE

Next: End

FURTHER INVESTIGATE DISPLAY BOARD PROBLEM

DIRECTION CHOICE OR CONTINUE

Next: End

NOT REACTING TO CH

KIT - PCB

Next: End

FAN DOES NOT RUN 1

KIT - PCB

Next: End

FAN DOES NOT RUN

KIT - PCB

Next: End

NO PERMANENT VOLTAGE TO FAN

KIT - PCB

Next: End

NO POWER TO FAN

KIT - PCB

Next: End

WRONG MIX

KIT - GAS VALVE

Next: End

NO SPARKING 2

PCB - PRIMARY CONTROLS & SPARK GENERATOR

Next: End

FUSE FURTHER INVESTIGATION 1

HARNESS - FAN

Next: End

FUSE FURTHER INVESTIGATION 2

HARNESS - FAN

Next: End

POWER UP BLANK DISPLAY

HARNESS - FAN

Next: End

BLANK DISPLAY

HARNESS - FAN

Next: End

FAN RUNS NO SPARK

HARNESS - WIRING - BOILER

Next: End

NO SPARKING

PCB - PRIMARY CONTROLS & SPARK GENERATOR

Next: End

SECTION FROM CONDENSE LEVEL SWITCH TO PCB

HARNESS - WIRING - BOILER

Next: End

NOT RUNNING / LEVEL SWITCH TRIPPED

PUMP - CONDENSATE

Next: End

SECTION FROM CONDENSE LEVEL SWITCH TO PCB 2

HARNESS - WIRING - BOILER

Next: End

NOT RUNNING / LEVEL SWITCH TRIPPED 2

PUMP - CONDENSATE

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

KIT - PCB

Next: End

LOW GAS RATE BOILER AND SYSTEM COOL

KIT - PCB

Next: End

FUSE BLOWING

Next: End

FUSE BLOWING 2

Next: End

BLANK FOR CONDENSATE PUMP INFORMATION

Z DIRECTION CHOICE OR CONTINUE

Next: End

INCORRECT MIX

KIT - GAS VALVE

Next: End

HE LE FAULT CODE

KIT - PCB

Next: End

SPARK GENERATOR

KIT - SPARK GENERATOR

Next: End

NO SPARKING

KIT - SPARK GENERATOR

Next: End

H1 INVESTIGATION 2

HARNESS - WIRING - BOILER

Next: End

OVERHEAT FURTHER INVESTIGATION

KIT - PCB

Next: End

OVERHEAT INVESTIGATION 2

HARNESS - WIRING - BOILER

Next: End

FAN RESISTANCE

RESULT AS EXPECTED

Next: End

VOLTAGE AT GAS VALVE

RESULT AS EXPECTED

Next: End

GAS VALVE

RESULT AS EXPECTED

Next: End

SENSOR FLUE TEMP

RESULT AS EXPECTED

Next: End

SENSOR TEMP FLOW

RESULT AS EXPECTED

Next: End

BOOILER TO TEMP RADS COLD

PUMP

Next: End

INCORRECT GAS RATE 2

KIT - PCB

Next: End

POTENTIOMETER TEMP CONTROL CH OP BOILER NOISY 2

KIT - PCB

Next: End

CH OPERATION NOISY

HEAT ENGINE

Next: End

CH OPERATION NOISEY

Next: End

H1 INVESTIGATION

KIT - PCB

Next: End

H4 INVESTIGATION

KIT - PCB

Next: End

HN POLARITY ISSUES

KIT - PCB

Next: End

PCB FUSE BLOWN

KIT - PCB - FUSE BLOWN

Next: End

H1 INVESTIGATION

HARNESS - WIRING - BOILER

Next: End

FUSE FURTHER INVESTIGATION

HARNESS - WIRING - BOILER

Next: End

H4 INVESTIGATION

HARNESS - WIRING - BOILER

Next: End

LE AND HE INVESTIGATION

HARNESS - WIRING - BOILER

Next: End

OVERHEAT INVESTIGATION 3

HARNESS - WIRING - BOILER

Next: End

NO MAINS POWER INTO PCB

HARNESS - WIRING - BOILER

Next: End

OVERHEATING WHEN NOT

KIT - PCB

Next: End

BOILER NOISY

PUMP

Next: End

OVERHEAT FURTHER INVESTIGATION

PUMP

Next: End

CH OPERATION BOILER UP TO TEMP RADS COLD

Next: End

H5 INVESTIGATION

KIT - PCB

Next: End

FROST PROTECTION

Next: End

FROST PROTECTION

KIT - PCB

Next: End

FROST PROTECTION

HARNESS - WIRING - BOILER

Next: End

FLAME SENSE

KIT - PCB

Next: End

FUSE FURTHER INVESTIGATION 3

HARNESS - WIRING - BOILER

Next: End

BLANK FOR OVERHEAT STAT REPLACEMENT OR INVESTIGATION

DIRECTION CHOICE OR CONTINUE

Next: End

NO POWER TO GAS VALVE

HARNESS - WIRING - BOILER

Next: End

FAN RUNS SPARKING BUT NOT IGNITING

HARNESS - WIRING - BOILER

Next: End

NO POWER TO GAS VALVE

KIT - PCB

Next: End

BOILER NOISY

CHARACTERISTIC TEST FROM OPERATION CH

Next: p640

BOILER UP TO TEMPERATURE BUT RADIATORS TOO COOL

CHARACTERISTIC TEST FROM OPERATION CH

Next: p194

BOILER AND SYSTEM TEMPERATURE TOO LOW

CHARACTERISTIC TEST FROM OPERATION CH

Next: p1271

OPERATION SATISFACTORY BUT BOILER GOES TO OVER HEAT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p924

TEMP DIFF CORRECT LOCAL BOILING

CHARACTERISTIC TEST FROM TEMPERATURE DIFFERENTIAL FLOW RETURN (P=DIF NOK NOISY NSD)

Next: !p248

DIFFERENTIAL OK

CHARACTERISTIC TEST FROM TEMPERATURE DIFFERENTIAL FLOW RETURN (P=DIF NOK NOISY NSD)

Next: !p250

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM FAN RUNS BURNER IGNITES AND ESTABLISHES CH DEMAND

Next: p933

BURNER CAN BE HEARD TO IGNITE BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM FAN RUNS BURNER IGNITES AND ESTABLISHES CH DEMAND

Next: p95

BURNER IGNITES AND ESTABLISHES THEN BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM FAN RUNS BURNER IGNITES AND ESTABLISHES CH DEMAND

Next: p786

07/09/2022 11:30:00 2208_1_50_1 21/11/2022 09:11:13

09/11/2022 13:40:21

Next: End

FUSE FURTHER INVESTIGATION F1

Next: !p11, !f12

INSPECTION DISPLAY PCB CONNECTIONS

REMOVE THE DISPLAY PCB

Next: !p1020, !f1021

OBSERVATION WHAT COLOUR MAIN PCB IS FITTED ?

Next: p1071, f1072

VOLTAGE PERMANENT - HALL SENSOR

ON/OFF SWITCH ON
NO DEMANDS

Next: p1073, f1074

RESISTANCE FAN HARNESS

DISCONNECT THE CONNECTOR FROM THE FAN
DISCONNECT THE FAN HARNESS CONNECTOR FROM THE PCB

Next: p1165, !f1197

RESISTANCE SENSOR TEMP PRIMARY AND HARNESS

DISCONNECT CONNECTOR TO THE PRIMARY SENSOR AND OVERHEAT SENSOR

Next: p1079, f1080

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: !p1081, !f1082

RESISTANCE DRY FIRE THERMISTOR

REMOVE THE CONNECTOR FROM THE DRY FIRE THERMISTOR

Next: !p1085, !f1086

RESISTANCE FAN HARNESS

DISCONNECT THE CONNECTOR FROM THE FAN
DISCONNECT THE FAN HARNESS CONNECTOR FROM THE PCB

Next: p1158, !f1195

RESISTANCE SENSOR TEMP PRIMARY AND HARNESS

DISCONNECT CONNECTOR TO THE PRIMARY SENSOR AND OVERHEAT SENSOR

Next: p1097, f1098

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: !p1103, !f1104

RESISTANCE DRY FIRE THERMISTOR

REMOVE THE CONNECTOR FROM THE DRY FIRE THERMISTOR

Next: !p1101, !f1102

VOLTAGE SWITCHED LIVE IN

Next: p1117, f1118

VOLTAGE SWITCHED LIVE IN AT CONNECTOR BLOCK

Next: p1248, !f1120

FUSE FURTHER INVESTIGATION F2

Next: !p1123, !f1124

VOLTAGE DISPLAY BOARD (AT CONTROL PCB)

{ONOFFSWITCHON}
DISCONNECT USER CONTROL FROM THE MAIN PCB

Next: !p1129, f1130

RESISTANCE FAN AND HARNESS (FOR POWER UP)

REMOVE FAN CONNECTOR FROM THE PCB

Next: !p1131, f1132

RESISTANCE FAN (FOR POWER UP)

DISCONNECT THE HARNESS FROM FAN

Next: !p1237, !f1134

RESISTANCE FAN AND HARNESS (FOR POWER UP)

REMOVE FAN CONNECTOR FROM THE PCB

Next: !p1137, f1138

RESISTANCE FAN (FOR POWER UP)

DISCONNECT THE HARNESS FROM FAN

Next: !p1238, !f1140

VOLTAGE DISPLAY BOARD (AT CONTROL PCB)

{ONOFFSWITCHON}
DISCONNECT USER CONTROL FROM THE MAIN PCB

Next: p1145, !f1146

VOLTAGE AT SPARK GENERATOR

USE INSULATION MAT AS REQUIRED

Next: !p1394, f1206

RESISTANCE SPARK GENERATOR HARNESS

REMOVE SPARK GENERATOR CONNECTOR FROM THE PCB

Next: !p1229, !f1247

RESISTANCE GAS VALVE SOLENOID MAIN AND HARNESS - BLUE

REMOVE GAS VALVE CONNECTOR FROM THE PCB

Next: p1214, f1226

RESISTANCE GAS VALVE SOLENOID MAIN

REMOVE THE LEADS FROM THE GAS VALVE.

Next: !p1240, !f1239

VOLTAGE AC PERMANENT SUPPLY TO CONDENSATE PUMP

Next: !p1255, !f1256

VOLTAGE SWITCHED LIVE IN AT CONNECTOR BLOCK

Next: p1258, !f1259

VOLTAGE AC PERMANENT SUPPLY TO CONDENSATE PUMP

Next: !p1266, !f1267

OBSERVATION JUMPER SETTINGS

Next: p1283, !f1284

OBSERVATION OPTIONAL CONDENSATE PUMP FITTED

Next: p1291, !f1292

OBSERVATION DISCONNECT MAINS TERMINAL BLOCK FUSE BLOW AGAIN

REMOVE WIRES FROM TH

Next: !p1304, !f1305

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: !p1400, !f1417

RESISTANCE DRY FIRE THERMISTOR

REMOVE THE CONNECTOR FROM THE DRY FIRE THERMISTOR

Next: !p1424, !f1425

RESISTANCE FAN

DISCONNECT THE FAN CONNECTOR FROM THE FAN

Next: !p1428, !f1429

VOLTAGE GAS VALVE (AT VALVE)

{ONOFFSWITCHON}

Next: !p1432, !f1433

RESISTANCE GAS VALVE SOLENOID MAIN

REMOVE THE LEADS FROM THE GAS VALVE.

Next: !p1436, !f1437

RESISTANCE DRY FIRE THERMISTOR

REMOVE THE CONNECTOR FROM THE DRY FIRE THERMISTOR

Next: !p1440, !f1441

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: !p1444, !f1445

VOLTAGE EXTERNAL CONTROLS (IN)

{ONOFFSWITCHON}
GAIN ACCESS TO PCB (USE INSULATION MAT AS NECESSARY)

Next: p1153, f1257

VOLTAGE PUMP AT PUMP

REMOVE THE COVER FROM THE PUMP

Next: !p219, !f220

OBSERVATION JUMPER SETTINGS

Next: p241, !f242

RESISTANCE OVERHEAT STAT AND HARNESS

DISCONNECT THE CONNECTOR TO THE GAS VALVE AND OVERHEAT STAT

Next: p1199, f263

RESISTANCE SENSOR OVERHEAT STAT

DISCONNECT THE RED WIRES FROM THE OVERHEAT STAT

Next: !p596, !f265

RESISTANCE SENSOR TEMP PRIMARY AND HARNESS

DISCONNECT CONNECTOR TO THE PRIMARY SENSOR AND OVERHEAT SENSOR

Next: !p278, f275

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: !p580, !f581

RESISTANCE DRY FIRE THERMISTOR AND HARNESS

REMOVE THE CONNECTOR FOR THE DRY FIRE THERMISTOR FROM THE PCB

Next: !p288, f285

RESISTANCE DRY FIRE THERMISTOR

REMOVE THE CONNECTOR FROM THE DRY FIRE THERMISTOR

Next: !p592, !f287

VOLTAGE MAINS POWER INTO APPLIANCE FOR POLARITY

GAIN ACCESS TO PCB (USE INSULATION MAT AS NECESSARY)

Next: !p292, !f291

RESISTANCE GAS VALVE SOLENOID MAIN AND HARNESS_FUSE

REMOVE GAS VALVE CONNECTOR FROM THE PCB

Next: p321, f317

RESISTANCE GAS VALVE SOLENOID MAIN_FUSE

REMOVE THE LEADS FROM THE GAS VALVE.

Next: !p588, !f508

RESISTANCE FAN

DISCONNECT THE FAN CONNECTOR FROM THE FAN

Next: !p1236, !f325

OBSERVATION DOES THE BOILER RESET

ALLOW THE APPLIANCE TO COOL

Next: p421, f441

RESISTANCE OVERHEAT STAT AND HARNESS

DISCONNECT THE CONNECTOR TO THE GAS VALVE AND OVERHEAT STAT

Next: p1395, f443

RESISTANCE SENSOR OVERHEAT STAT

DISCONNECT THE RED WIRES FROM THE OVERHEAT STAT

Next: !p597, !f445

VOLTAGE PUMP AT PUMP

REMOVE THE COVER FROM THE PUMP

Next: !p664, !f665

VOLTAGE MAINS POWER INPUT TO APPLIANCE

GAIN ACCESS TO PCB (USE INSULATION MAT AS NECESSARY)

Next: p7, f8

VOLTAGE PUMP AT PUMP

REMOVE THE COVER FROM THE PUMP

Next: !p662, !f663

TEMPERATURE FROST PROTECTION ACTIVE

ATTACH A TEMPERATURE PROBE TO THE FLOW PIPE

Next: p706, !f707

OBSERVATION JUMPER SETTINGS MAIN AND DISPLAY PCB

REMOVE USER DISPLAY PCB

Next: !p716, !f717

RESISTANCE SENSOR TEMP PRIMARY AND HARNESS

DISCONNECT CONNECTOR TO THE PRIMARY SENSOR AND OVERHEAT SENSOR

Next: !p759, f760

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: !p761, !f762

RESISTANCE FUSE F1 (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: p601, f10

RESISTANCE GAS VALVE SOLENOID MAIN AND HARNESS_FUSE

REMOVE GAS VALVE CONNECTOR FROM THE PCB

Next: p910, f911

RESISTANCE GAS VALVE SOLENOID MAIN_FUSE

REMOVE THE LEADS FROM THE GAS VALVE.

Next: !p912, !f913

RESISTANCE FAN

DISCONNECT THE FAN CONNECTOR FROM THE FAN

Next: !p1235, !f917

VOLTAGE GAS VALVE (AT PCB)

{ONOFFSWITCHON}
GAIN ACCESS TO PCB (USE INSULATION MAT AS NECESSARY)

Next: !p937, f938

RESISTANCE OVERHEAT STAT AND HARNESS

DISCONNECT THE CONNECTOR TO THE GAS VALVE AND OVERHEAT STAT

Next: p939, f940

RESISTANCE SENSOR OVERHEAT STAT

DISCONNECT THE RED WIRES FROM THE OVERHEAT STAT

Next: !p941, !f942

OBSERVATION WHAT COLOUR MAIN PCB IS FITTED ?

Next: p989, f1181

INSPECTION PRIMARY HEAT EXCHANGER

REMOVE BURNER ASSEMBLY
REMOVE SUMP COVER ASSEMBLY

Next: p102, !f103

INSPECTION INJECTOR

Next: p1172, !f105

VOLTAGE PERMANENT - HALL SENSOR (BLUE PCB)

ON/OFF SWITCH ON
NO DEMANDS

Next: p1089, f1090

VOLTAGE FAN POWER AT PCB

{ONOFFSWITCHON}
REMOVE THE FAN CONNECTOR FROM THE PCB

Next: p1077, f1078

RESISTANCE FAN HARNESS

DISCONNECT THE CONNECTOR FROM THE FAN
DISCONNECT THE FAN HARNESS CONNECTOR FROM THE PCB

Next: !p1087, !f1198

RESISTANCE DRY FIRE THERMISTOR AND HARNESS

REMOVE THE CONNECTOR FOR THE DRY FIRE THERMISTOR FROM THE PCB

Next: p1168, f1084

VOLTAGE FAN AT PCB

{ONOFFSWITCHON}
REMOVE THE FAN CONNECTOR FROM THE PCB

Next: p1091, f1092

RESISTANCE FAN HARNESS

DISCONNECT THE CONNECTOR FROM THE FAN
DISCONNECT THE FAN HARNESS CONNECTOR FROM THE PCB

Next: !p1093, !f1196

RESISTANCE DRY FIRE THERMISTOR AND HARNESS

REMOVE THE CONNECTOR FOR THE DRY FIRE THERMISTOR FROM THE PCB

Next: p1162, f1100

OBSERVATION WHAT COLOUR MAIN PCB IS FITTED ?

Next: p1141, f1144

RESISTANCE FUSE F2 ( APPLIANCE)

REMOVE FUSE HOLDER FROM PCB

Next: p1121, f1122

RESISTANCE ON/OFF SWITCH AND HARNESS

LOWER THE PCB
REM

Next: p1125, !f1126

OBSERVATION WHAT COLOUR MAIN PCB IS FITTED ?

Next: p1127, f1128

VOLTAGE AT MAIN PCB

ON/OFF SWITCH ON
DISCONNECT USER CONTROL FROM THE MAIN PCB

Next: !p1135, f1136

VOLTAGE AT MAIN PCB

ON/OFF SWITCH ON
DISCONNECT USER CONTROL FROM THE MAIN PCB

Next: p1142, !f1143

FURTHER INVESTIGATION DISPLAY BOARD PROBLEM

TESTS SO FAR INDICAT

Next: !p1149, !f1151

FURTHER INVESTIGATION DISPLAY BOARD PROBLEM

TESTS SO FAR INDICAT

Next: !p1147, !f1148

OBSERVATION DISCONNECT FAN - DEMAND RECOGNISED?

REMOVE CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p1154, !f1155

OBSERVATION DISCONNECT FAN HARNESS - DEMAND RECOGNISED?

REMOVE FAN CONNECTOR FROM THE PCB

Next: !p1156, !f1157

RESISTANCE FAN

DISCONNECT THE FAN CONNECTOR FROM THE FAN

Next: !p1160, !f1171

RESISTANCE FAN

DISCONNECT THE FAN CONNECTOR FROM THE FAN

Next: !p1163, !f1164

RESISTANCE FAN

DISCONNECT THE FAN CONNECTOR FROM THE FAN

Next: !p1166, !f1167

RESISTANCE FAN

DISCONNECT THE FAN CONNECTOR FROM THE FAN

Next: !p1169, !f1170

INSPECTION BURNER

REMOVE THE BURNER

Next: !p1175, !f1174

INSPECTION SENSORS SECURELY FITTED

Next: p266, !f1205

RESISTANCE SPARK GENERATOR HARNESS - BLUE

REMOVE SPARK GENERATOR CONNECTOR FROM THE PCB

Next: !p1243, !f1246

OBSERVATION OPTIONAL CONDENSATE PUMP FITTED

Next: p1249, !f1250

VOLTAGE AC INTO CONDENSATE LEVEL SWITCH

Next: p1251, !f1252

VOLTAGE AC OUT OF CONDENSATE LEVEL SWITCH

Next: !p1253, f1254

OBSERVATION OPTIONAL CONDENSATE PUMP FITTED

Next: p1260, !f1261

VOLTAGE AC INTO CONDENSATE LEVEL SWITCH

Next: p1262, !f1263

VOLTAGE AC OUT OF CONDENSATE LEVEL SWITCH

Next: !p1264, f1265

OBSERVATION DOES BOILER CONTINUE TO SHOW DEMAND

{ONOFFSWITCHON}

Next: p1272, f1290

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p1273, !f1274

INSPECTION CONDENSATE PIPE

Next: p1275, !f1276

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: p1277, !f1278

RESISTANCE POTENTIOMETER TEMP DHW

REMOVE USER DISPLAY FROM FACIA

Next: p1279, !f1280

GAS RATE

Next: !p1281, f1282

INSPECTION INJECTOR

Next: !p1285, !f1286

INFORMATION OPTIONAL CONDENSATE PUMP

WHEN THIS APPLIANCE

Next: p1311, !f1312

OBSERVATION OPTIONAL CONDENSATE PUMP FITTED

Next: p1306, f1303

OBSERVATION DISCONNECT CONDENSATE PUMP WIRING FUSE BLOW AGAIN

REMOVE THE WIRES FRO

Next: p1307, !f1308

OBSERVATION DISCONNECT MAINS TERMINAL BLOCK FUSE BLOW AGAIN

REMOVE WIRES FROM TH

Next: !p1309, !f1310

INFORMATION CONDENSATE PUMP OPERATION

THE FOLLOWING INFORM

Next: !p1313, !f1314

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p1325, !f1318

INSPECTION IMPULSE TUBE

REMOVE IMPULSE TUBE FROM GAS VALVE AND BOILER CHASSIS

Next: p1352, !f1326

RESISTANCE ELECTRODE SPARK

UNPLUG ELECTRODE FROM HT LEAD

Next: p1328, !f1329

INSPECTION INJECTOR

Next: p1330, !f1331

INSPECTION BURNER

REMOVE THE BURNER

Next: p1334, !f1333

INSPECTION PRIMARY HEAT EXCHANGER

REMOVE BURNER ASSEMBLY
REMOVE SUMP COVER ASSEMBLY

Next: !p1335, !f1336

INSPECTION CONDENSATE PIPE

Next: p1316, !f1351

INSPECTION FLUE

Next: p1379, !f1362

RESISTANCE EARTH PIN BURNER

REMOVE THE BURNER EARTH PIN FROM HEAT EXCHANGER

Next: p814, !f1375

RESISTANCE EARTH PIN BURNER

REMOVE THE BURNER EARTH PIN FROM HEAT EXCHANGER

Next: !p1377, !f1378

RESISTANCE ELECTRODE SPARK HARNESS

REMOVE SPARK HARNESS FROM ELECTRODE AND SPARK GENERATOR

Next: p1327, !f1390

RESISTANCE SENSOR TEMP PRIMARY AND HARNESS

DISCONNECT CONNECTOR TO THE PRIMARY SENSOR AND OVERHEAT SENSOR

Next: p1421, f1397

RESISTANCE DRY FIRE THERMISTOR AND HARNESS

REMOVE THE CONNECTOR FOR THE DRY FIRE THERMISTOR FROM THE PCB

Next: !p1422, f1423

PUMP LIMPET TEST

Next: p233, !f234

OBSERVATION PUMP RUNNING

Next: p694, f218

INSPECTION EXTERNAL BYPASS SYSTEM

Next: p677, !f236

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: p237, !f618

GAS RATE

Next: p239, f240

TEMPERATURE DIFFERENTIAL FLOW RETURN

ATTACH TEMPERATURE CLAMPS TO THE FLOW AND RETURN PIPES AS INDICATED BY THE RED ARROWS

Next: !p245, ?247, ?249

INSPECTION INJECTOR

Next: !p243, !f244

RESISTANCE ELECTRODE SENSE HARNESS

DISCONNECT FLAME SENSE LEAD FROM ELECTRODE
DISCONNECT FLAME SENSE LEAD FROM THE PCB

Next: p268, !f271

RESISTANCE ELECTRODE SENSE

REMOVE FLAME SENSE ELECTRODE FROM HEAT EXCHANGER

Next: p1376, !f269

RESISTANCE FAN AND HARNESS

REMOVE FAN CONNECTOR FROM THE PCB

Next: !p326, f323

OBSERVATION PUMP RUNNING

Next: p422, f466

PUMP LIMPET TEST

Next: p455, !f469

OBSERVATION SYSTEM FILLED/VENTED

Next: p621, !f471

INSPECTION EXTERNAL BYPASS

Next: p423, !f470

VOLTAGE MAINS POWER AT CONNECTOR BLOCK

GAIN ACCESS TO TERMINAL BLOCK

Next: !p602, !f603

OBSERVATION DOES OVERHEAT RE OCCUR

BOILER THERMOSTAT SE

Next: p632, !f765

RESISTANCE SENSOR TEMP PRIMARY

REMOVE THE TWO RED LEADS FROM THE PRIMARY SENSOR

Next: p635, !f634

RESISTANCE OVERHEAT STAT AND HARNESS AT TEMP

Next: p884, !f637

RESISTANCE DRY FIRE THERMISTOR AND HARNESS AT TEMPERATURE

RUN THE APPLIANCE UNTIL THE BURNER SHUTS DOWN

Next: !p638, !f639

OBSERVATION PUMP RUNNING

Next: p192, f661

OBSERVATION SYSTEM FILLED/VENTED

Next: p235, !f693

OBSERVATION SYSTEM FILLED/VENTED

Next: p696, !f701

PUMP LIMPET TEST

Next: p697, !f698

INSPECTION EXTERNAL BYPASS SYSTEM

Next: !p699, !f700

FAN RUNS

{ONOFFSWITCHON}

Next: p1110, f1116

VOLTAGE EXTERNAL CONTROLS (NO DEMAND)

{ONOFFSWITCHON}
GAIN ACCESS TO PCB (USE INSULATION MAT AS NECESSARY)
NO DEMANDS

Next: !p757, f758

INSPECTION IMPULSE TUBE

REMOVE IMPULSE TUBE FROM GAS VALVE AND BOILER CHASSIS

Next: p97, !f739

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p727, !f798

RESISTANCE ELECTRODE SENSE HARNESS

DISCONNECT FLAME SENSE LEAD FROM ELECTRODE
DISCONNECT FLAME SENSE LEAD FROM THE PCB

Next: p812, !f801

RESISTANCE ELECTRODE SENSE

REMOVE FLAME SENSE ELECTRODE FROM HEAT EXCHANGER

Next: p1363, !f813

INSPECTION FLUE

Next: p815, !f816

INSPECTION CONDENSATE PIPE

Next: p817, !f818

INSPECTION PRIMARY HEAT EXCHANGER

REMOVE BURNER ASSEMBLY
REMOVE SUMP COVER ASSEMBLY

Next: p819, !f820

INSPECTION INJECTOR

Next: p821, !f822

INSPECTION BURNER

REMOVE THE BURNER

Next: !p823, !f824

RESISTANCE POTENTIOMETER TEMP DHW

REMOVE USER DISPLAY FROM FACIA

Next: p636, !f888

RESISTANCE FAN AND HARNESS

REMOVE FAN CONNECTOR FROM THE PCB

Next: p1299, f915

OVERHEAT THERMOSTAT FURTHER INVESTIGATION

TESTS SO FAR INDICAT

Next: !p925, !f926

OBSERVATION SPARKING

REMOVE THE ELECTRODE LEAD FROM THE SPARK GENERATOR

Next: p934, f971

VOLTAGE GAS VALVE (AT VALVE)

{ONOFFSWITCHON}

Next: p1337, f936

RESISTANCE GAS VALVE SOLENOID MAIN

REMOVE THE LEADS FROM THE GAS VALVE.

Next: !p943, !f944

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p799, !f109

INSPECTION FLUE

Next: p98, !f99

INSPECTION CONDENSATE PIPE

Next: p100, !f101

VOLTAGE AT SPARK GENERATOR

USE INSULATION MAT AS REQUIRED

Next: !p1392, f1213

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