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:

VAILLANT HOME / GLOWWORM (ENERGY / HOME / ULTIMATE / EASICOM 3 / SUSTAIN) REGULAR

GLOBALLY REPLACED

Next: &1, *

NO FAULT FOUND

Next: nff

CASE REMOVAL

Next: &3, !f2

START UP DISPLAY

ENSURE NO DEMANDS

Next: &91, ?587, ?591, ?843, ?1425

SELF CHECK AND APPLIANCE SET UP

ENSURE NO DEMANDS

Next: &135, ?195, ?197

TYPE OF DIAGNOSTIC PROCEDURE

Next: &150, !f136

OBSERVATION FAN RUNS CH DEMAND

BOILER CH THERMOSTAT SET TO MAX
ENSURE CH SYSTEM IS COOL

Next: &230, ?153, ?1376, ?1391

OBSERVATION BURNER IGNITION AND ESTABLISH

BOILER CH THERMOSTAT SETTING TO MAX

Next: &475, ?234, ?236, ?429

OPERATION CENTRAL HEATING

Next: &1181, ?476, ?480

DIAGNOSTIC CODES GUIDE

Next: &nff, !f625

HEADER FOR FLOW THERMISTOR FAULT CODE

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f627

HEADER FOR RETURN THERMISTOR FAULT CODE

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f633

HEADER FOR F70 FAULT CODE

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f639

HEADER FOR F64, F71, F84 AND F85

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f678

OVERHEAT INVESTIGATION

Next: &nff, f702

HEADER FOR F61 AND F88

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f769

HEADER FOR F49

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f775

HEADER FOR F86

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f781

HEADER FOR FAULT CODE CON OR ERR

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f789

HEADER FOR F67 AND F87

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f795

HEADER FOR F62 AND F27

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f800

HEADER FOR F29

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f808

FAULT CODE HISTORY GUIDE

RESET THE APPLIANCE

Next: &nff, !f848

HEADER FOR FUSE INVESTIGATION

INTENTIONALLY BLANK HEADER FOR FUSE INVESTIGATION

Next: &nff, f850

OPERATION PUMP OVERRUN

LOCATE PUMP ON SYSTEM

Next: &nff, !f865

OPERATION DHW

CH DEMAND OFF
DHW DEMAND ON

Next: &864, ?1184, ?1186

CIRCULATION OR THERMISTOR ISSUES ON CH

INTENTIONALLY BLANK HEADER FOR CH ISSUES - THERMISTOR / CIRCULATION RELATED

Next: &nff, f1191

INFORMATION FOR OBSERVATION ADJUSTMENT DSN DISPLAY OPERATES

THE PCB'S OPERATING

Next: &nff, !f1430

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f1432

LITE DIAGNOSTIC

DIAGNOSIS RELIES ON

Next: &nff, !f1434

HEADER FOR QADAI FLOW THERMISTOR

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f1436

HEADER FOR QADAI RETURN THERMISTOR

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f1440

HEADER FOR QADAI GAS VALVE RESISTANCE

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f1448

HEADER FOR QADAI GAS VALVE VOLTAGE

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f1472

HEADER FOR QADAI AC VOLTAGE TO PUMP

INTENTIONALLY BLANK HEADER FOR FAULT CODE

Next: &nff, f1476

RESTRICTED OR BLOCKED / PERFORATED

FLUE

Next: End

WARPED / DISTORTED OR DAMAGED

BURNER

Next: End

RESTRICTED OR BLOCKED FLUEWAYS

HEAT EXCHANGER

Next: End

CH DOES NOT RESPOND

PCB

Next: End

OPEN TOO MUCH

Next: End

WEAK OR SLOW

PUMP

Next: End

INCORRECTLY SET 3

PARAMETER DSN

Next: End

LOW 3

GAS INLET PRESSURE

Next: End

POOR CH OPERATION

THERMISTOR FITMENT

Next: End

POOR CH OPERATION

SENSOR

Next: End

POOR CH OPERATION

SENSOR

Next: End

POOR CH OPERATION

Next: End

POOR CH OPERATION

Next: End

WEAK OR SLOW POOR CH OP

PUMP

Next: End

NO POWER TO PUMP

PCB

Next: End

FUSE INVESTIGATION

PUMP

Next: End

CH DOES NOT RESPOND 1

PCB

Next: End

CH DOES NOT RESPOND 4

PCB

Next: End

AIR OR LOW PRESSURE 3

REFILL AND VENT

Next: End

NO POWER TO PUMP 2

PCB

Next: End

AIR OR LOW PRESSURE 4

REFILL AND VENT

Next: End

NO POWER TO PUMP OVERHEAT

PCB

Next: End

AIR OR LOW PRESSURE

REFILL AND VENT

Next: End

WEAK OR SLOW OVERHEAT

PUMP

Next: End

CLOSED TOO MUCH OR SHUT

Next: End

SYSTEM RESTRICTION EXCESSIVE DIFFERENTIAL

Next: End

OVERHEAT

PCB

Next: End

FAULTY PUMP OVERRUN

PCB

Next: End

OUT OF CALIBRATION FROST PROTECTION

SENSOR

Next: End

OUT OF CALIBRATION FROST PROTECTION

SENSOR

Next: End

FAULTY FAN SECTION 2

HARNESS HEAT ENGINE

Next: End

FAN CIRCUITRY RUNNING CONTINUOUSLY

FAN C/W COMBUSTION CHAMBER COVER

Next: End

RESTRICTED CAUSING LOW GAS RATE

DUCT - AIR INLET

Next: End

AIR INTAKE RESTRICTED OR BLOCKED 2

FAN C/W COMBUSTION CHAMBER COVER

Next: End

POOR OUTPUT

SYPHON

Next: End

POOR OUTPUT

FLUE

Next: End

POOR OUTPUT

BURNER

Next: End

POOR OUTPUT

HEAT EXCHANGER

Next: End

INCORRECTLY SET 2

PARAMETER DSN

Next: End

BLANK FOR TYPE OF DIAGNOSITC PROCEDURE

Z REDIRECTION

Next: End

RESTRICTED CAUSING LOW GAS RATE OVERHEAT

DUCT - AIR INLET

Next: End

AIR INTAKE RESTRICTED OR BLOCKED OVERHEAT

FAN C/W COMBUSTION CHAMBER COVER

Next: End

POOR OUTPUT OVERHEAT

SYPHON

Next: End

POOR OUTPUT OVERHEAT

FLUE

Next: End

POOR OUTPUT OVERHEAT

BURNER

Next: End

POOR OUTPUT OVERHEAT

HEAT EXCHANGER

Next: End

CAUSING ODD DISPLAY

FAN C/W COMBUSTION CHAMBER COVER

Next: End

SHORTING ODD DISPLAY

HARNESS HEAT ENGINE

Next: End

NO DISPLAY

PCB

Next: End

FAULTY

HARNESS WIRING

Next: End

FAULTY FAN SECTION 3

HARNESS HEAT ENGINE

Next: End

FAULTY FAN SECTION 3 FAULT CODE

HARNESS HEAT ENGINE

Next: End

THERMISTOR WAITING TIME

THERMISTOR FITMENT

Next: End

THERMISTOR WAITING TIME

SENSOR

Next: End

THERMISTOR WAITING TIME

SENSOR

Next: End

THERMISTOR WAITING TIME

PCB

Next: End

AIR OR LOW PRESSURE 2

REFILL AND VENT

Next: End

THERMISTOR WAITING TIME 2

PUMP

Next: End

THERMISTOR WAITING TIME

Next: End

THERMSITOR WAITING TIME

Next: End

NO PERMANENT DC TO FAN

PCB

Next: End

NO DEMAND TO RUN FAN

SENSOR

Next: End

NO DEMAND TO RUN FAN

SENSOR

Next: End

FAULTY FAN SECTION

HARNESS HEAT ENGINE

Next: End

CORRUPTED SOFTWARE DB15046 & DB15117

PCB

Next: End

BLANK INFORMATION PAGE FOR DSN ADJUSTMENT

Z REDIRECTION

Next: End

BLANK FOR QADAI

Z REDIRECTION

Next: End

BLANK FOR LITE DIAGNOSTIC

Z REDIRECTION

Next: End

QADAI

SENSOR

Next: End

QADAI

SENSOR

Next: End

QADAI

GAS CONTROL VALVE

Next: End

QADAI GAS VALVE TOP SOLENOID VOLTAGE

PCB

Next: End

QADAI NO POWER TO PUMP

PCB

Next: End

CASE OFF

Z REDIRECTION

Next: End

SELF TEST 3

PCB

Next: End

RESTRICTED OR BLOCKED

SYPHON

Next: End

LOW

GAS INLET PRESSURE

Next: End

RESTRICTED OR BLOCKED / POORLY SEALED

DUCT - AIR INLET

Next: End

RESTRICTED OR BLOCKED / POORLY SEALED 2

DUCT - AIR INLET

Next: End

RESTRICTED OR BLOCKED

FLUE

Next: End

RESTRICTED / BLOCKED

BURNER

Next: End

WARPED OR HIGH RESISTANCE

ELECTRODE IGNITION AND SENSING

Next: End

SECTION TO SPARK GENERATOR 2

HARNESS HEAT ENGINE

Next: End

RESTRICTED OR BLOCKED FLUEWAYS 2

HEAT EXCHANGER

Next: End

NO SPARK OR WARPED

ELECTRODE IGNITION AND SENSING

Next: End

SECTION TO SPARK GENERATOR

HARNESS HEAT ENGINE

Next: End

RESTRICTED OR BLOCKED / [POORLY SEALED 3

DUCT - AIR INLET

Next: End

RESTRICTED OR BLOCKED 2

FLUE

Next: End

RESTRICTED OR BLOCKED 2

BURNER

Next: End

RESTRICTED OR BLOCKED FLUEWAYS 3

HEAT EXCHANGER

Next: End

GAS VALVE DAMAGED PCB

GAS CONTROL VALVE AND PCB

Next: End

LOW 2

GAS INLET PRESSURE

Next: End

RESTRICTED OR BLOCKED 2

SYPHON

Next: End

INCORRECTLY SET

PARAMETER - HEATING POWER

Next: End

OUT OF CALIBRATION 2

SENSOR

Next: End

OUT OF CALIBRATION 2

SENSOR

Next: End

BLANK FOR FAULT CODES 2

Z REDIRECTION

Next: End

NO DISPLAY

FUSE (FUSED SPUR)

Next: End

NO DISPLAY

FUSE PCB

Next: End

BLANK FOR HEATING POWER DIAGNOSTIC CODES

Z REDIRECTION

Next: End

FAULT CODE

SENSOR

Next: End

FAULT CODE

SENSOR

Next: End

INCORRECTLY SET

PARAMETER DSN

Next: End

FAULT CODE THERMISTOR ISSUES

SENSOR

Next: End

FAULT CODE THERMISTOR ISSUES

SENSOR

Next: End

FAULT CODE F64 AND F71

THERMISTOR FITMENT

Next: End

OVERHEAT

THERMISTOR FITMENT

Next: End

OVERHEAT

SENSOR

Next: End

OVERHEAT

SENSOR

Next: End

FAULT CODE

GAS CONTROL VALVE

Next: End

F49 FAULT CODE

PCB

Next: End

FAULT CODE

EBUS CONTROLS

Next: End

MISSING

LINK

Next: End

FAULT CODE F86

UNDERFLOOR HEATING CONTROLS

Next: End

CONNECTION FAULT CODE

PCB

Next: End

FAULT CODE F87

ELECTRODE IGNITION AND SENSING

Next: End

ERROR CODE

HARNESS WIRING

Next: End

FAULT CODE F62 AND F27

ELECTRODE IGNITION AND SENSING

Next: End

PASSING WITH FAN PRESSURE

GAS CONTROL VALVE

Next: End

PASSING WITH NO FAN PRESSURE

GAS CONTROL VALVE

Next: End

FAULT CODE F29

DUCT - AIR INLET

Next: End

FAULT CODE F29

ELECTRODE IGNITION AND SENSING

Next: End

FAULT CODE F29

HARNESS HEAT ENGINE

Next: End

FAULT CODE F29

FLUE

Next: End

FAULT CODE F29

BURNER

Next: End

FAULT CODE F29

HEAT EXCHANGER

Next: End

FAULT CODE F29

SYPHON

Next: End

FAULT CODE F29

GAS INLET PRESSURE

Next: End

BLANK FOR UNRECORDED FAULT 2

Z REDIRECTION

Next: End

BLANK FOR FAULT CODE HISTORY

Z REDIRECTION

Next: End

BOILER FIRES SELF TEST

PCB

Next: End

FAULT PUMP OVERRUN 2

PCB

Next: End

LEAKING

FLUE PIPE GASKETS

Next: End

BAFFLING WRONG MIX

GAS CONTROL VALVE

Next: End

CH DOES NOT RESPOND

EBUS CONTROLS

Next: End

CH DOES NOT RESPOND 4

Next: End

CH DOES NOT RESPOND 3

Next: End

SYSTEM BLOCKAGE

Next: End

INSUFFICIENT CH OUTPUT

PCB

Next: End

NO DHW DEMAND

Next: End

DHW FAULTY

Next: End

RE FIRING ISSUE ON CH

PCB

Next: End

NOT RUNNING

PUMP

Next: End

NOT RUNNING 2

PUMP

Next: End

NOT RUNNING OVERHEAT

PUMP

Next: End

BLANK FOR OVERHEAT

Z REDIRECTION

Next: End

CORRECTLY ACTIVATED

FROST PROTECTION

Next: End

FAN RUNNING CONTINUOUSLY

PCB

Next: End

POOR OUTPUT

GAS CONTROL VALVE

Next: End

POOR OUTPUT OVERHEAT

GAS CONTROL VALVE

Next: End

PCB BLOWING FUSE

PCB FUSE BLOWN

Next: End

DISPLAY ODD

PCB

Next: End

FAULTY

DISPLAY

Next: End

THERMISTOR WAITING TIME

PUMP

Next: End

THERMISTOR WAITING TIME 2

PCB

Next: End

NO DEMAND TO RUN FAN

PCB

Next: End

NOT RUNNING WITH DEMAND

FAN C/W COMBUSTION CHAMBER COVER

Next: End

HARD RESET PCB

HARD RESET PCB

Next: End

FLOW THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

RETURN THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

GAS VALVE TOP SOLENOID

RESULT AS EXPECTED

Next: End

PCB GAS VALVE VOLTAGE TOP SOLENOID

RESULT AS EXPECTED

Next: End

PCB POWER TO PUMP AC

RESULT AS EXPECTED

Next: End

SELF TEST

EBUS CONTROLS

Next: End

BOILER FIRES SELF TEST

Next: End

NOT RECOGNISING FLAME

PCB

Next: End

NOT ESTABLISHING WRONG MIX

GAS CONTROL VALVE

Next: End

RESTRICTED OR BLOCKED

PIPE - FLUE

Next: End

RESTRICTED OR BLOCKED 2

DRAIN - CONDENSATE (SUMP)

Next: End

RESTRICTED OR BLOCKED

FLUE PIPE GASKETS

Next: End

NOT RECTIFYING

IGNITOR / SPARK GENERATOR

Next: End

LOW FAN PRESSURE

FAN C/W COMBUSTION CHAMBER COVER

Next: End

NO POWER TO SPARK GENERATOR

PCB

Next: End

FAULTY HALL SENSOR

FAN C/W COMBUSTION CHAMBER COVER

Next: End

NO SPARK

IGNITOR / SPARK GENERATOR

Next: End

NOT IGNITING WRONG MIX

GAS CONTROL VALVE

Next: End

RESTRICTED OR BLOCKED 2

PIPE - FLUE

Next: End

RESTRICTED OR BLOCKED 3

DRAIN - CONDENSATE (SUMP)

Next: End

RESTRICTED OR BLOCKED 2

FLUE PIPE GASKETS

Next: End

LOW FAN PRESSURE NOT IGNITING

FAN C/W COMBUSTION CHAMBER COVER

Next: End

NOT IGNITING NOT OPENING

GAS CONTROL VALVE

Next: End

NO POWER TO GAS VALVE

PCB

Next: End

HARNESS DAMAGED GAS VALVE

HARNESS HEAT ENGINE AND PCB

Next: End

NO POWER TO SPARK GENERATOR FAULT CODE

PCB

Next: End

FAULTY HALL SENSOR FAULT CODE

FAN C/W COMBUSTION CHAMBER COVER

Next: End

BLANK FOR FAULT CODES 1

Z REDIRECTION

Next: End

NO MAINS POWER

Next: End

FUSE FURTHER INVESTIGATION

Z REDIRECTION

Next: End

FUSE FURTHER INVESTIGATION 2

Z REDIRECTION

Next: End

FLOW THERMISTOR FAULT CODE

PCB

Next: End

FLOW THERMISTOR SECTION

HARNESS HEAT ENGINE

Next: End

RETURN THERMISTOR FAULT CODE

PCB

Next: End

RETURN THERMISTOR SECTION

HARNESS HEAT ENGINE

Next: End

F70 FAULT CODE

PCB

Next: End

FAULT CODE THERMISTOR ISSUES

HARNESS HEAT ENGINE

Next: End

FAULT CODE THERMISTOR ISSUES

PCB

Next: End

FAULT CODE THERMISTOR ISSUES 2

HARNESS HEAT ENGINE

Next: End

FAULT CODE GAS VALVE

PCB

Next: End

FAULT CODE GAS VALVE

HARNESS HEAT ENGINE

Next: End

F49 FAULT CODE 2

PCB

Next: End

F86 FAULT CODE

PCB

Next: End

F86 FAULT CODE 2

PCB

Next: End

CONNECTION FAULT CODE

DISPLAY

Next: End

F87 FAULT CODE

PCB

Next: End

FAULT CODE F62 AND F27

PCB

Next: End

FAULT CODE F29

PCB

Next: End

FAULT CODE F29

IGNITOR / SPARK GENERATOR

Next: End

FAULT CODE F29

GAS CONTROL VALVE

Next: End

FAULT CODE F29

PIPE - FLUE

Next: End

FAULT CODE F29

DRAIN - CONDENSATE (SUMP)

Next: End

FAULT CODE F29

FLUE PIPE GASKETS

Next: End

LOW FAN PRESSURE FAULT CODE F29

FAN C/W COMBUSTION CHAMBER COVER

Next: End

BLANK FOR UNRECORDED FAULT

Z REDIRECTION

Next: End

RESTRICTED OR PERFORATED

PIPE - FLUE

Next: End

RESTRICTED OR BLOCKED

DRAIN - CONDENSATE (SUMP)

Next: End

GASKETS IN POOR CONDITION

Next: !p1001

24 VOLT EXTERNAL CONTROLS FITTED

CHARACTERISTIC TEST FROM OBSERVATION EXTERNAL CONTROLS FITTED

Next: p1042

EBUS CONTROLS FITTED

CHARACTERISTIC TEST FROM OBSERVATION EXTERNAL CONTROLS FITTED

Next: p1044

APPLIANCE DOES NOT RECOGNISE DHW DEMAND

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p1185

APPLIANCE RECOGNISES DHW DEMAND BUT OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p1187

CH DEMAND RECOGNISED BUT SYMBOLS AND TEMPERATURE RANDOMLY CHANGING

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS CH DEMAND

Next: p1378

CH DEMAND RECOGNISED BUT FAN DOES NOT RUN OR ONLY RUNS FOR UP TO 10 SECONDS

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS CH DEMAND

Next: p1392

DISPLAY ILLUMINATES BUT GOES OFF AFTER APPROXIMATELY 15 SECONDS

CHARACTERISTIC TEST FROM START UP DISPLAY

Next: p1426

CH DEMAND NOT RECOGNISED

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS CH DEMAND

Next: p1039

FAN RUNS CONTINUOUSLY AT HIGH SPEED

CHARACTERISTIC TEST FROM SELF CHECK AND APPLIANCE SET UP

Next: p1328

RADIATOR SYMBOL FLASHES IN DISPLAY

CHARACTERISTIC TEST FROM SELF CHECK AND APPLIANCE SET UP

Next: p210

BURNER DOES NOT IGNITE AND ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION AND ESTABLISH

Next: p303

BURNER IGNITES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION AND ESTABLISH

Next: p238

FLUE PIPE RESTRICTED OR PERFORATED

Next: !p318

CONDENSATE SUMP RESTRICTED OR BLOCKED

Next: !p320

GASKETS IN POOR CONDITION

Next: !p322

FLUE PIPE RESTRICTED OR PERFORATED

Next: !p409

CONDENSATE SUMP RESTRICTED OR BLOCKED

Next: !p411

GASKETS IN POOR CONDITION

Next: !p413

FAULT CODE F32 SHOWN

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION AND ESTABLISH

Next: p431

BOILER REACHES TEMP RADIATORS REMAIN COOL OR DO NOT HEAT

CHARACTERISTIC TEST FROM OPERATION CENTRAL HEATING

Next: p1267

BOILER AND RADIATORS FAIL TO REACH SET TEMPERATURE

CHARACTERISTIC TEST FROM OPERATION CENTRAL HEATING

Next: p1157

FAULT CODE SHOWN

CHARACTERISTIC TEST FROM START UP DISPLAY

Next: p588

DISPLAY DOES NOT ILLUMINATE

CHARACTERISTIC TEST FROM START UP DISPLAY

Next: p593

FLUE PIPE RESTRICTED OR PERFORATED

Next: !p826

CONDENSATE SUMP RESTRICTED OR BLOCKED

Next: !p828

GASKETS IN POOR CONDITION

Next: !p830

PREVIOUSLY UNRECORDED FAULT SHOWN

CHARACTERISTIC TEST FROM START UP DISPLAY

Next: p844

FLUE PIPE RESTRICTED OR PERFORATED

Next: !p997

CONDENSATE SUMP RESTRICTED OR BLOCKED

Next: !p999

22/12/2022 12:19:37 2211_1_50_1 27/01/2023 11:04:47

16/01/2023 08:10:48

Next: End

OBSERVATION THERMISTORS CORRECTLY FITTED

REMOVE AIR INTAKE TUBE TO GAIN ACCESS TO FLOW THERMISTOR

Next: p1192, !f1193

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1214, !f1213

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1279, !f1280

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1292, !f1293

INSPECTION AIR INLET DUCT AND GASKET

REMOVE THE AIR INLET DUCT FROM THE FAN ASSEMBLY

Next: p1345, !f1346

OBSERVATION DSN NUMBER

Next: p1358, !f1359

OBSERVATION THERMISTORS CORRECTLY FITTED

REMOVE AIR INTAKE TUBE TO GAIN ACCESS TO FLOW THERMISTOR

Next: p1395, !f1396

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1403, !f1404

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: p1417, !f1418

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: !p1437, !f1438

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: !p1441, !f1442

RESISTANCE GAS VALVE

REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p1449, !f1450

VOLTAGE GAS VALVE AT GAS VALVE

Next: !p1473, !f1474

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1477, !f1478

OBSERVATION EXTERNAL CONTROLS FITTED - SELF TEST

GAIN ACCESS TO PCB

Next: p213, f214

DISCONNECT EBUS CONTROLS - SELF TEST

REMOVE EBUS WIRING CONNECTIONS AND MAKE SAFE
REMOVE WIRE LINK BETWEEN THE 24 VOLT CONNECTIONS

Next: !p215, !f216

VOLTAGE RECTIFICATION AT PCB

{GAINPCBACS}

Next: !p308, f309

INSPECTION AIR INLET DUCT AND GASKET

REMOVE THE AIR INLET DUCT FROM THE FAN ASSEMBLY

Next: p310, !f311

INSPECTION FLUE PIPE AND SUMP / GASKETS

REMOVE THE FLUE PIPE FROM FRONT OF THE APPLIANCE

Next: p316, ?317, ?319, ?321

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p348, !f349

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND MAKE SAFE

Next: p384, f377

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: !p378, f379

RESISTANCE HARNESS FAN

REMOVE THE 4 WIRE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X20 FROM THE PCB

Next: !p380, !f1389

INSPECTION FLUE PIPE AND SUMP / GASKETS

REMOVE THE FLUE PIPE FROM FRONT OF THE APPLIANCE

Next: p407, ?408, ?410, ?412

VOLTAGE GAS VALVE AT GAS VALVE

Next: !p421, f422

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: !p423, f424

RESISTANCE GAS VALVE

REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p425, !f426

RESISTANCE HARNESS FAN

REMOVE THE 4 WIRE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X20 FROM THE PCB

Next: !p434, !f1390

RESISTANCE FUSE (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: !p596, f597

FUSE FURTHER INVESTIGATION (FUSED SPUR)

THE INFORMATION PROV

Next: !p598, !f599

FUSE FURTHER INVESTIGATION (PCB FUSE)

THE INFORMATION PROV

Next: !p602, !f603

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: !p628, f629

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: !p630, !f631

RESISTANCE THERMISTOR RETURN AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: !p634, f635

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: !p636, !f637

OBSERVATION DSN NUMBER

Next: !p640, !f641

OBSERVATION THERMISTORS CORRECTLY FITTED

REMOVE AIR INTAKE TUBE TO GAIN ACCESS TO FLOW THERMISTOR

Next: p685, !f700

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: !p688, !f689

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: !p698, !f699

OBSERVATION THERMISTORS CORRECTLY FITTED

REMOVE AIR INTAKE TUBE TO GAIN ACCESS TO FLOW THERMISTOR

Next: p703, !f713

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: !p771, f770

RESISTANCE GAS VALVE

REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p772, !f773

OBSERVATION EBUS CONTROLS FITTED

Next: p776, !f777

OBSERVATION UNDERFLOOR HEATING FITTED

Next: p782, f783

INSPECTION LINK FITTED

Next: !p784, !f785

VOLTAGE DISPLAY AT MAIN PCB

{GAINPCBACS}

Next: p790, !f791

INSPECTION ELECTRODE IGNITION

REMOVE AIR INTAKE TUBE
REMOVE IGNITION ELECTRODE

Next: !p796, !f797

INSPECTION ELECTRODE IGNITION

REMOVE AIR INTAKE TUBE
REMOVE IGNITION ELECTRODE

Next: p801, !f804

INSPECTION CONDENSATE PIPE

Next: p809, !f837

INSPECTION AIR INLET DUCT AND GASKET

REMOVE THE AIR INLET DUCT FROM THE FAN ASSEMBLY

Next: p814, !f815

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p820, !f821

INSPECTION FLUE PIPE AND SUMP / GASKETS

REMOVE THE FLUE PIPE FROM FRONT OF THE APPLIANCE

Next: p824, ?825, ?827, ?829

RESISTANCE PUMP AND HARNESS AC FUSE INVESTIGATION

REMOVE CONNECTOR X14 FROM THE PCB

Next: !p1373, !f1219

INSPECTION BURNER ASSEMBLY

REMOVE COMBINED FAN,

Next: p1004, !f1005

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p1006, !f1007

OBSERVATION EXTERNAL CONTROLS FITTED

GAIN ACCESS TO THE PCB

Next: p1040, ?1041, ?1043

BYPASS EXTERNAL CONTROLS - 240V

DISCONNECT 240V EXTE

Next: !p1053, !f1257

BYPASS EXTERNAL CONTROLS - 24V

DISCONNECT 24V EXTER

Next: !p1047, !f1255

DISCONNECT EBUS CONTROLS - CH DEMAND

DISCONNECT EBUS WIRING CONNECTIONS AND MAKE SAFE

Next: !p1045, !f1046

INSPECTION EXTERNAL BYPASS

Next: p1273, !f1061

PUMP LIMPET TEST

Next: !p1073, !f1063

OBSERVATION DSN NUMBER

Next: p481, !f1155

GAS RATE

Next: !p1168, f1344

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p1147, !f1167

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: p1194, !f1200

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: p1195, !f1201

OBSERVATION PUMP RUNNING

LOCATE SYSTEM PUMP

Next: p1281, f1209

PUMP LIMPET TEST

Next: p1197, !f1212

INSPECTION EXTERNAL BYPASS

Next: p1198, !f1204

TEMPERATURE DIFFERENTIAL CH

ATTACH TEMPERATURE C

Next: !p1199, !f1205

SYSTEM FILLED AND VENTED CORRECTLY

Next: p1059, !f1277

OBSERVATION PUMP RUNNING

LOCATE SYSTEM PUMP

Next: p1060, f1278

SYSTEM FILLED AND VENTED CORRECTLY

Next: p1196, !f1289

OBSERVATION PUMP RUNNING

LOCATE SYSTEM PUMP

Next: p1294, f1291

SYSTEM FILLED AND VENTED CORRECTLY

Next: p1296, !f1295

PUMP LIMPET TEST

Next: p1297, !f1298

INSPECTION EXTERNAL BYPASS

Next: p1299, !f1300

TEMPERATURE DIFFERENTIAL CH

ATTACH TEMPERATURE C

Next: p1301, !f1302

GAS RATE

Next: p1303, f1357

OBSERVATION RUN BOILER TO TEMPERATURE

BOILER CH THERMOSTAT

Next: p1319, !f1320

OPERATION PUMP OVERRUN FOR OVERHEAT

LOCATE SYSTEM PUMP

Next: !p1321, !f1322

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: p1324, !f1325

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: !p1327, !f1326

RESISTANCE HARNESS FAN

REMOVE THE 4 WIRE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X20 FROM THE PCB

Next: p1329, !f1330

VOLTAGE DC FAN RETURN

Next: !p1331, !f1332

INSPECTION FAN INTAKE

REMOVE THE AIR INTAKE DUCT FROM THE FAN ASSEMBLY

Next: p1347, !f1348

INSPECTION CONDENSATE PIPE

Next: p1349, !f1350

INSPECTION FLUE ASSEMBLY

Next: p1351, !f1352

INSPECTION BURNER ASSEMBLY

REMOVE COMBINED FAN,

Next: p1353, !f1354

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p1355, !f1356

INSPECTION AIR INLET DUCT AND GASKET

REMOVE THE AIR INLET DUCT FROM THE FAN ASSEMBLY

Next: p1360, !f1361

INSPECTION FAN INTAKE

REMOVE THE AIR INTAKE DUCT FROM THE FAN ASSEMBLY

Next: p1362, !f1363

INSPECTION CONDENSATE PIPE

Next: p1364, !f1365

INSPECTION FLUE ASSEMBLY

Next: p1366, !f1367

INSPECTION BURNER ASSEMBLY

REMOVE COMBINED FAN,

Next: p1368, !f1369

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p1370, !f1371

OBSERVATION DISCONNECT FAN ASSEMBLY - DISPLAY NORMAL?

REMOVE CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p1379, !f1380

RESISTANCE HARNESS FAN

REMOVE THE 4 WIRE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X20 FROM THE PCB

Next: !p1381, !f1382

VOLTAGE DISPLAY AT MAIN PCB

{GAINPCBACS}

Next: p1384, !f1385

RESISTANCE HARNESS DISPLAY PCB

REMOVE CONNECTOR X51 FROM THE PCB
REMOVE CONNECTOR FROM THE DISPLAY PCB

Next: !p1386, !f1387

OBSERVATION STATUS CODE THERMISTOR TEMPERATURE SPREAD

Next: p1393, f1394

VOLTAGE DC FAN PERMANENT

{GAINPCBACS}

Next: p1413, !f1414

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: p1397, !f1398

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: p1399, !f1400

OBSERVATION PUMP RUNNING

LOCATE SYSTEM PUMP

Next: p1401, f1402

SYSTEM FILLED AND VENTED CORRECTLY

Next: p1405, !f1406

PUMP LIMPET TEST

Next: p1407, !f1408

INSPECTION EXTERNAL BYPASS

Next: p1409, !f1410

TEMPERATURE DIFFERENTIAL CH NOT FIRING

ATTACH TEMPERATURE C

Next: !p1411, !f1412

VOLTAGE DC FAN DEMAND

{GAINPCBACS}
REMOVE 4 WIRE CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p1415, f1416

RESISTANCE HARNESS FAN

REMOVE THE 4 WIRE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X20 FROM THE PCB

Next: !p1421, !f1422

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: !p1419, !f1420

OBSERVATION ADJUSTMENT DSN DISPLAY OPERATES CORRECTLY

REMOVE CONNECTOR FROM RETURN THERMISTOR AND MAKE SAFE

Next: !p1427, !f1428

OBSERVATION FROST PROTECTION STATUS CODE

Next: p1323, f212

DISCONNECT EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p217, !f860

INSPECTION CONDENSATE PIPE

Next: p284, !f240

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p285, !f286

INSPECTION AIR INLET DUCT AND GASKET

REMOVE THE AIR INLET DUCT FROM THE FAN ASSEMBLY

Next: p994, !f288

INSPECTION CONDENSATE PIPE

Next: p304, !f428

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p305, !f427

OBSERVATION BURNER HEARD TO IGNITE

Next: p387, f307

PRESSURE FAN

NO DEMANDS
ATTACH TUBE FROM + VE CONNECTION ON FGA TO THE UPPER GAS VALVE TEST POINT

Next: p353, f406

INSPECTION ELECTRODE IGNITION

REMOVE AIR INTAKE TUBE
REMOVE IGNITION ELECTRODE

Next: p332, !f331

PRESSURE FAN

NO DEMANDS
ATTACH TUBE FROM + VE CONNECTION ON FGA TO THE UPPER GAS VALVE TEST POINT

Next: !p313, f315

INSPECTION FLUE ASSEMBLY

Next: p323, !f324

INSPECTION BURNER ASSEMBLY

REMOVE COMBINED FAN,

Next: p350, !f326

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE IGNITION ELECTRODE LEAD FROM
TERMINAL 3 OF THE SPARK GENERATOR

Next: p312, f347

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p351, !f352

PRESSURE FAN - EQUALISATION

NO DEMANDS
ATTACH TUBE FROM + VE CONNECTION ON FGA TO THE UPPER GAS VALVE TEST POINT

Next: !p405, f420

OBSERVATION SPARKING

DISCONNECT THE IGNIT

Next: p306, f369

INSPECTION ELECTRODE IGNITION

REMOVE AIR INTAKE TUBE
REMOVE IGNITION ELECTRODE

Next: p354, !f362

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p385, !f386

INSPECTION AIR INLET DUCT AND GASKET

REMOVE THE AIR INLET DUCT FROM THE FAN ASSEMBLY

Next: p357, !f404

INSPECTION FLUE ASSEMBLY

Next: p414, !f415

INSPECTION BURNER ASSEMBLY

REMOVE COMBINED FAN,

Next: p416, !f417

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p418, !f419

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: !p432, f433

OBSERVATION MAXIMUM HEATING POWER

NO DEMANDS

Next: p497, !f496

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: p498, !f500

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: p1156, !f501

FAULT CODES

Next: !p589, !f590

VOLTAGE MAINS POWER INPUT AT PCB

{GAINPCBACS}

Next: p594, f595

RESISTANCE FUSE PCB

REMOVE FUSE FROM PCB

Next: p1383, f601

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: p695, f687

RESISTANCE THERMISTOR RETURN AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: !p696, f697

RESISTANCE THERMISTOR FLOW

REMOVE AIR INTAKE TUBE TO GAIN ACCESS
REMOVE CONNECTOR FROM FLOW THERMISTOR

Next: p704, !f725

RESISTANCE THERMISTOR RETURN

REMOVE CONNECTOR FROM THERMISTOR

Next: p1290, !f726

OBSERVATION DISCONNECT EBUS CONTROLS

REMOVE THE EBUS WIRING AND MAKE SAFE

Next: !p778, !f779

OBSERVATION LINK UNDERFLOOR HEATING CONTROL

REMOVE WIRES FROM TO

Next: !p786, !f787

RESISTANCE HARNESS DISPLAY PCB

REMOVE CONNECTOR X51 FROM THE PCB
REMOVE CONNECTOR FROM THE DISPLAY PCB

Next: !p792, !f798

PRESSURE STANDING RETURN

ATTACH U-GAUGE TO INLET PRESSURE TEST POINT
ENSURE NO OTHER GAS APPLIANCES ARE IN OPERATION

Next: p802, !f805

TIGHTNESS TEST INSTALLATION

Next: !p803, !f806

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p811, !f838

VOLTAGE RECTIFICATION AT PCB FAULT CODE

{GAINPCBACS}

Next: !p812, f813

INSPECTION ELECTRODE IGNITION

REMOVE AIR INTAKE TUBE
REMOVE IGNITION ELECTRODE

Next: p816, !f817

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE IGNITION ELECTRODE LEAD FROM
TERMINAL 3 OF THE SPARK GENERATOR

Next: p818, f819

PRESSURE FAN

NO DEMANDS
ATTACH TUBE FROM + VE CONNECTION ON FGA TO THE UPPER GAS VALVE TEST POINT

Next: !p822, f823

INSPECTION FLUE ASSEMBLY

Next: p831, !f832

INSPECTION BURNER ASSEMBLY

REMOVE COMBINED FAN,

Next: p833, !f834

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p835, !f836

ACCESS PREVIOUSLY UNRECORDED

IF A NEW FAULT OCCUR

Next: !p845, !f846

INSPECTION FLUE PIPE AND SUMP / GASKETS

REMOVE THE FLUE PIPE FROM FRONT OF THE APPLIANCE

Next: p995, ?996, ?998, ?1000

INSPECTION FLUE ASSEMBLY

Next: p1002, !f1003

System Information

  • Total Tests: 444
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control