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:

HALSTEAD GLEN DIMPLEX WICKES - BEST / BOSS / LW

GLOBALLY REPLACED

Next: &1, *

CASE OFF

Next: &2, !f4

INFORMATION / GRAVITY LINK SET UP

THIS APPLIANCE IS SU

Next: &50, !f5

OBSERVATION PUMP RUNS

LOCATE SYSTEM PUMP
BOILER THERMOSTAT SET TO MAX

Next: &336, f8

OBSERVATION FAN RUNS

ENSURE BOILER IS COOL

Next: &91, f66

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &3, !f51

OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: &142, ?92, ?94, ?96, ?98, ?175

OPERATION CH

Next: &372, ?143, ?145, ?147

OPERATION DHW

ENSURE APPLIANCE IS

Next: &nff, ?375, ?377

IGNITION LOCKOUT RESET INFORMATION

A COMMON ISSUE WITH

Next: &nff, !f183

OVERHEAT INVESTIGATION

INTENTIONALLY BLANK - HEADER FOR OVERHEAT INVESTIGATION

Next: &nff, f301

FUSE INVESTIGATION (APPLIANCE)

INTENTIONALLY BLANK - HEADER FOR APPLIANCE FUSE INVESTIGATION

Next: &nff, f268

FUSE INVESTIGATION (MAINS)

INTENTIONALLY BLANK - HEADER FOR MAINS FUSE INVESTIGATION

Next: &nff, f253

OBSERVATION BOILER STANDBY

ENSURE NO DEMANDS

Next: &48, f337

PUMP OVERRUN OPERATION

ATTACH A TEMPERATURE CLAMP ON THE CH FLOW PIPE AS NEAR AS POSSIBLE TO THE APPLIANCE

Next: &nff, !f371

INFORMATION PUMP OVERRUN

THE PUMP OVERRUN ON

Next: &171, !f373

HEADER FOR FAULTING IGNITION CONTROL BOX AND GAS VALVE (UNPROVEN)

HEADER FOR IGNITION CONTROL BOX FAULT FINDING - NOT USED

Next: &nff, f404

INSUFFICIENT

GAS INLET PRESSURE

Next: End

INSUFFICIENT IGNITION PRESSURE

VALVE - GAS

Next: End

HIGH RESISTANCE OR WRONG GAP

ELECTRODE - FLAME DETECTION

Next: End

RESTRICTED OR BLOCKED

INJECTOR

Next: End

RESTRICTED OR BLOCKED

HEAT EXCHANGER (FLUEWAYS)

Next: End

INSUFFICIENT 2

GAS INLET PRESSURE

Next: End

WRONG SPARK GAP

ELECTRODE - IGNITION

Next: End

OPEN TOO MUCH

Next: End

NOT CIRCULATING PROPERLY

PUMP

Next: End

OUT OF CALIBRATION 2

THERMISTOR - HONEYWELL

Next: End

OUT OF CALIBRATION

POTENTIOMETER C/W LEADS

Next: End

RESTRICTED OR BLOCKED 3

INJECTOR

Next: End

INSUFFICIENT 3

GAS INLET PRESSURE

Next: End

EXCESSIVE BURNER PRESSURE

VALVE - GAS

Next: End

OPEN CIRCUIT

THERMOSTAT - OVERHEAT

Next: End

NO APPARENT FAULT

FUSE FURTHER INVESTIGATION (MAINS)

Next: End

BLOWING MAINS FUSE

VALVE - GAS

Next: End

BLOWING MAINS FUSE

HARNESS

Next: End

BLOWING FUSE (MAINS)

FAN ASSEMBLY

Next: End

BLOWING FUSE (MAINS)

PUMP

Next: End

NO DEMAND

Next: End

BLOWING APPLIANCE FUSE

FAN ASSEMBLY

Next: End

BLOWING APPLIANCE FUSE

VALVE - GAS

Next: End

BLOWING APPLIANCE FUSE

HARNESS

Next: End

BLOWING APPLIANCE FUSE

PUMP

Next: End

PUMP SUPPLY SECTION (OVERHEAT)

HARNESS

Next: End

CLOSED TO MUCH

Next: End

OUT OF CALIBRATION (OVERHEAT)

THERMISTOR - HONEYWELL

Next: End

OUT OF CALIBRATION (OVERHEAT)

POTENTIOMETER C/W LEADS

Next: End

RUNNING WITH NO DEMAND (OVERHEAT)

CONTROL BOX - IGNITION - HONEYWELL

Next: End

RUNNING BEYOND TEMPERATURE

HARNESS

Next: End

OPEN CIRCUIT (OVERHEAT)

THERMOSTAT - OVERHEAT

Next: End

RUNNING WITH NO DEMAND

CONTROL BOX - IGNITION - HONEYWELL

Next: End

NOT MAKING AT RIGHT PRESSURE

PRESSURE SWITCH

Next: End

RESTRICTED OR BLOCKED 2

HEAT EXCHANGER (FLUEWAYS)

Next: End

BLOCKED / RESTRICTED 2

AIR PRESSURE SWITCH TUBES AND PIPES

Next: End

RESTRICTED OR BLOCKED

FLUE

Next: End

NO SPARK

CONTROL BOX - IGNITION - HONEYWELL

Next: End

BLANK FOR PUMP OVERRUN OPERATION 2

Z REDIRECTION

Next: End

PUMP OVERRUN NOT WORKING

PCB (AQUASTAT)

Next: End

BLANK FOR PUMP OVERRUN INFORMATION

Z REDIRECTION

Next: End

BLOWN

FUSE (MAINS)

Next: End

OUT OF CALIBRATION

THERMISTOR - HONEYWELL

Next: End

OUT OF CALIBRATION 3

THERMISTOR - HONEYWELL

Next: End

BLANK FOR CASE OFF

Z REDIRECTION

Next: End

PCB (IGNITION CONTROL BOX) AND GAS VALVE - PROVEN

CONTROL BOX - IGNITION AND GAS VALVE

Next: End

GAS VALVE BLOWN IGNITION CONTROL BOX

PCB (IGNITION CONTROL BOX) AND GAS VALVE RESISTANCE NOT OK

Next: End

BLOWN

FUSE (APPLIANCE)

Next: End

PUMP SUPPLY SECTION

HARNESS

Next: End

OPEN OR SHORT CIRCUIT

THERMISTOR - HONEYWELL

Next: End

SWITCH SIDE FAULTY

POTENTIOMETER C/W LEADS

Next: End

MAINS SUPPLY SECTION

HARNESS

Next: End

BLANK FOR TYPE OF DIAGNOSTIC PROCEDURE

Z REDIRECTION

Next: End

CONTROL SIDE FAULTY

POTENTIOMETER C/W LEADS

Next: End

FAN SECTION

HARNESS

Next: End

BLOCKED / RESTRICTED

AIR PRESSURE SWITCH TUBES AND PIPES

Next: End

NOT RECTIFYING

CONTROL BOX - IGNITION - HONEYWELL

Next: End

BLOCKED OR SEALS BREACHED

FLUE

Next: End

RESTRICTED OR BLOCKED 2

INJECTOR

Next: End

NOT OPENING

VALVE - GAS

Next: End

NO POWER TO GAS VALVE

CONTROL BOX - IGNITION - HONEYWELL

Next: End

NOT CIRCULATING

Next: End

SHUTTING OFF TOO EARLY

PCB (AQUASTAT)

Next: End

INSUFFICIENT BURNER PRESSURE

VALVE - GAS

Next: End

KETTLING

HEAT EXCHANGER (WATERWAYS)

Next: End

OVERHEAT STAT SECTION

HARNESS

Next: End

SHOWING OVERHEAT WHEN SHOULDNT

PCB (AQUASTAT)

Next: End

BLOWING MAINS FUSE

Next: End

NO APPARENT FAULT

FUSE FURTHER INVESTIGATION (APPLIANCE)

Next: End

NO POWER SUPPLY TO PUMP OVERHEAT

PCB (AQUASTAT)

Next: End

TRIPPING EARLY

THERMOSTAT - OVERHEAT

Next: End

NOT CONTROLLING HEAT

PCB (AQUASTAT)

Next: End

NO OBVIOUS FAULT

OVERHEAT INFORMATION

Next: End

RUNNING WITH NO DEMAND

PCB (AQUASTAT)

Next: End

APS SECTION 2

HARNESS

Next: End

DIRTY OR RUNNING SLOW

FAN ASSEMBLY

Next: End

SHORTED OR SPARKING IN WRONG PLACE

ELECTRODE - IGNITION

Next: End

NOT RUNNING

PUMP - NOT RUNNING

Next: End

NOT RUNNING (OVERHEAT)

PUMP - NOT RUNNING

Next: End

BLANK FOR MAINS FUSE INVESTIGATION

Z REDIRECTION

Next: End

THERMISTOR SECTION 2

HARNESS

Next: End

NO DHW DEMAND

Next: End

BOTH REQUIRED

PCB (IGNITION CONTROL BOX) AND GAS VALVE - RESISTANCE OK

Next: End

BLANK FOR APPLIANCE FUSE INVESTIGATION

Z REDIRECTION

Next: End

THERMISTOR SECTION

HARNESS

Next: End

NO POWER SUPPLY TO PUMP

PCB (AQUASTAT)

Next: End

NOT RUNNING

FAN ASSEMBLY

Next: End

NO PERMANENT SUPPLY TO CONTROL BOX

PCB (AQUASTAT)

Next: End

NO POWER TO FAN

CONTROL BOX - IGNITION - HONEYWELL

Next: End

APS SECTION

HARNESS

Next: End

STUCK MADE

PRESSURE SWITCH

Next: End

NO DEMAND TO CONTROL BOX

PCB (AQUASTAT)

Next: End

BOILER REACHES TEMPERATURE BUT RADIATORS REMAIN COOL

CHARACTERISTIC TEST FROM OPERATION CH

Next: p144

BOILER AND RADIATORS FAIL TO REACH TEMPERATURE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p146

CH OPERATES SATISFACTORILY BUT BOILER IS NOISY

CHARACTERISTIC TEST FROM OPERATION CH

Next: p148

RED OVERHEAT LED ILLUMINATES BEFORE BURNER IGNITION

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p176

BOILER OVERHEATS BEFORE 80 DEGREES

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO MAX TEMP

Next: !p322

BOILER SIGNIFICANTLY EXCEEDS 80 DEGREES AND BURNER REMAINS LIT

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO MAX TEMP

Next: p324

DHW OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p376

BOILER DOES NOT RUN WITH DHW DEMAND

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p393

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p105

BURNER IGNITES BUT BAFFLES OR LIFTS OFF

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p95

SPARKING DOES NOT OCCUR (OVERHEAT LED DOES NOT ILLUMINATE)

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p344

SPARKING OCCURS BUT BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p99

VOLTAGE GAS VALVE AT CONTROL BOX

REMOVE THE IGNITION

Next: !p128, f129

RESISTANCE GAS VALVE

REMOVE THE IGNITION CONTROL BOX FROM THE GAS VALVE

Next: !p130, !f401

PRESSURE GAS INLET

ATTACH A PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: !p166, !f164

RESISTANCE OVERHEAT STAT

REMOVE THE WIRES FROM THE OVERHEAT THERMOSTAT

Next: !p179, !f181

RESISTANCE FAN AND HARNESS (FUSE INVESTIGATION)

REMOVE THE CONNECTOR FROM THE IGNITION CONTROL BOX

Next: p254, f260

RESISTANCE FAN (FUSE INVESTIGATION)

REMOVE THE WIRES FROM THE FAN ASSEMBLY

Next: !p264, !f265

RESISTANCE FAN AND HARNESS (FUSE INVESTIGATION)

REMOVE THE CONNECTOR FROM THE IGNITION CONTROL BOX

Next: p269, f270

RESISTANCE FAN (FUSE INVESTIGATION)

REMOVE THE WIRES FROM THE FAN ASSEMBLY

Next: !p271, !f272

OBSERVATION BURNER IGNITES OR OVERHEAT LED

ENSURE APPLIANCE IS COOL
BOILER THERMOSTAT TO MAX

Next: p302, f331

RESISTANCE HARNESS PUMP SUPPLY

REMOVE CONNECTOR X6 FROM THE PCB

Next: !p307, !f308

RESISTANCE OVERHEAT STAT AND HARNESS

REMOVE CONNECTOR X4/X7 FROM THE PCB

Next: !p332, f333

RESISTANCE OVERHEAT STAT

REMOVE THE WIRES FROM THE OVERHEAT THERMOSTAT

Next: !p334, !f335

VOLTAGE AC FROM EXTERNAL CONTROLS (NO DEMAND)

ENSURE NO DEMANDS

Next: !p338, f339

VOLTAGE DC DEMAND AT IGNITION CONTROL BOX (NO DEMAND)

ENSURE NO DEMANDS

Next: p340, !f341

RESISTANCE APS AND HARNESS WITH KIT

CONNECT THE APS TESTING KIT AND FGA TO THE APS
(POSITIVE CONNECTIONS)

Next: p357, f347

RESISTANCE APS WITH KIT

REMOVE THE WIRES AND

Next: !p348, !f349

RESISTANCE MAINS FUSE

REMOVE FUSE FROM FUSED SPUR

Next: !p386, f387

FUSE FURTHER INVESTIGATION (MAINS)

THE INFORMATION PROV

Next: !p388, !f389

RESISTANCE THERMISTOR

REMOVE THE WIRES FROM THE THERMISTOR

Next: !p391, !f392

RESISTANCE GAS VALVE

REMOVE THE IGNITION CONTROL BOX FROM THE GAS VALVE

Next: !p407, !f408

FUSE FURTHER INVESTIGATION (APPLIANCE)

THE INFORMATION PROV

Next: !p412, !f413

RESISTANCE THERMISTOR

REMOVE THE WIRES FROM THE THERMISTOR

Next: !p420, !f421

OBSERVATION REMOVE PINK DOES FAN NOW RUN

REMOVE THE CONNECTOR

Next: p67, f73

VOLTAGE AC FAN AT CONTROL BOX

RESET LOCKOUT AS NECESSARY

Next: p74, f77

RESISTANCE HARNESS AQUASTAT PCB TO CONTROL BOX

REMOVE CONNECTOR X5 FROM THE AQUASTAT PCB

Next: !p80, !f81

RESISTANCE APS AT REST

REMOVE THE WIRES FROM THE AIR PRESSURE SWITCH
(NOTING THEIR LOCATIONS)

Next: !p84, f85

INSPECTION APS TUBES / PIPES

REMOVE THE FAN ASSEMBLY

Next: !p86, !f87

PRESSURE GAS INLET (IGNITION)

ATTACH A PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p107, !f106

PRESSURE BURNER IGNITION

ATTACH A PRESSURE GAUGE TO THE BURNER PRESSURE TEST POINT

Next: p108, !f109

INSPECTION RECTIFICATION ELECTRODE AND LEAD

DISCONNECT RECTIFICATION LEAD FROM IGNITION CONTROL BOX (REAR LEAD)

Next: p110, !f111

INSPECTION BURNER

Next: p112, !f114

INSPECTION INJECTOR

REMOVE THE BURNER ASSEMBLY

Next: !p113, !f115

INSPECTION FLUEWAYS

Next: !p117, !f119

PRESSURE BURNER IGNITION

ATTACH A PRESSURE GAUGE TO THE BURNER PRESSURE TEST POINT

Next: p121, f125

INSPECTION BURNER

Next: !p123, !f127

LIMPET PUMP

Next: p149, !f153

PRESSURE BURNER

ATTACH A PRESSURE GAUGE TO THE BURNER PRESSURE TEST POINT

Next: p154, f157

PRESSURE BURNER

ATTACH A PRESSURE GAUGE TO THE BURNER PRESSURE TEST POINT

Next: p167, !f169

INSPECTION EXTERNAL BYPASS

Next: !p150, !f152

RESISTANCE THERMISTOR

REMOVE THE WIRES FROM THE THERMISTOR

Next: p155, !f158

RESISTANCE POTENTIOMETER CONTROL SIDE

REMOVE CONNECTOR X1 FROM THE PCB
BOILER THERMOSTAT SET TO MAX

Next: p396, !f159

INSPECTION INJECTOR

REMOVE THE BURNER ASSEMBLY

Next: !p161, !f162

LIMPET PUMP

Next: !p168, !f170

RESISTANCE OVERHEAT STAT AND HARNESS

REMOVE CONNECTOR X4/X7 FROM THE PCB

Next: !p182, f178

RESISTANCE GAS VALVE

REMOVE THE IGNITION CONTROL BOX FROM THE GAS VALVE

Next: p255, !f261

RESISTANCE HARNESS INCOMING MAINS (FUSE INVESTIGATION)

REMOVE CONNECTOR X4

Next: p256, !f262

RESISTANCE PUMP AND HARNESS

Next: p257, !f266

OBSERVATION REMOVE PERMANENT MAINS SUPPLY TO APPLIANCE

REMOVE THE INCOMING

Next: !p258, !f259

RESISTANCE GAS VALVE

REMOVE THE IGNITION CONTROL BOX FROM THE GAS VALVE

Next: p273, !f274

RESISTANCE HARNESS INCOMING MAINS (FUSE INVESTIGATION)

REMOVE CONNECTOR X4

Next: p275, !f276

RESISTANCE PUMP AND HARNESS

Next: !p282, !f278

OBSERVATION PUMP RUNS

LOCATE SYSTEM PUMP
BOILER THERMOSTAT SET TO MAX

Next: p303, f304

LIMPET PUMP

Next: p311, !f312

INSPECTION EXTERNAL BYPASS

Next: p313, !f314

RESISTANCE THERMISTOR

REMOVE THE WIRES FROM THE THERMISTOR

Next: p315, !f316

RESISTANCE POTENTIOMETER CONTROL SIDE

REMOVE CONNECTOR X1 FROM THE PCB
BOILER THERMOSTAT SET TO MAX

Next: p317, !f318

OBSERVATION RUN BOILER TO MAX TEMP

ATTACH A TEMPERATURE CLAMP ON THE CH FLOW PIPE AS NEAR AS POSSIBLE TO THE APPLIANCE

Next: p319, ?321, ?323

INFORMATION PUMP OVERRUN

THE PUMP OVERRUN ON

Next: !p329, !f369

RESISTANCE HARNESS AQUASTAT PCB TO CONTROL BOX

REMOVE CONNECTOR X5 FROM THE AQUASTAT PCB

Next: !p327, !f328

RESISTANCE HARNESS AQUASTAT PCB TO CONTROL BOX

REMOVE CONNECTOR X5 FROM THE AQUASTAT PCB

Next: !p342, !f343

OBSERVATION SPARKING AT IGNITION CONTROL BOX

UNCLIP AQUASTAT PCB

Next: !p356, f345

INSPECTION FLUEWAYS

Next: p350, !f351

INSPECTION APS TUBES / PIPES

REMOVE THE FAN ASSEMBLY

Next: p352, !f353

INSPECTION FLUE

Next: !p354, !f355

OBSERVATION SPARKING AT IGNITION CONTROL BOX WITH APS MADE

ENSURE CONNECTOR IS

Next: p346, !f365

RESISTANCE THERMISTOR

REMOVE THE WIRES FROM THE THERMISTOR

Next: !p394, !f395

INSPECTION BURNER

Next: p160, !f400

RESISTANCE FUSE

REMOVE FUSE FROM INLINE FUSE HOLDER
(PUSH IN AND TWIST ANTICLOCKWISE TO UNDO)

Next: p414, f411

RESISTANCE HARNESS PUMP SUPPLY

REMOVE CONNECTOR X6 FROM THE PCB

Next: p415, !f416

RESISTANCE HARNESS INCOMING MAINS

REMOVE CONNECTOR X4 / X7 FROM THE PCB

Next: p417, !f424

RESISTANCE THERMISTOR AND HARNESS

REMOVE CONNECTOR X2 FROM THE PCB

Next: p418, f419

RESISTANCE POTENTIOMETER SWITCH

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p422, !f423

RESISTANCE THERMISTOR AND HARNESS

REMOVE CONNECTOR X2 FROM THE PCB

Next: p69, f390

RESISTANCE POTENTIOMETER CONTROL SIDE

REMOVE CONNECTOR X1 FROM THE PCB
BOILER THERMOSTAT SET TO MAX

Next: p88, !f72

VOLTAGE AC FAN AT FAN

GAIN ACCESS TO THE FAN ASSEMBLY

Next: !p75, !f76

RESISTANCE APS AND HARNESS AT REST

REMOVE CONNECTOR FROM IGNITION CONTROL BOX

Next: !p82, f83

RESISTANCE HARNESS AQUASTAT PCB TO CONTROL BOX

REMOVE CONNECTOR X5 FROM THE AQUASTAT PCB

Next: !p89, !f90

INSPECTION BURNER

Next: p116, !f118

PRESSURE GAS INLET (IGNITION)

ATTACH A PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p120, !f124

System Information

  • Total Tests: 227
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control