XSol Diagnostic System

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:

OPERATION CH

ON/OFF SWITCH ON

Next: &15, ?237, ?239, ?241, ?243, ?410

BURNER IGNITES

ON/OFF SWITCH ON

Next: &275, ?82, ?84, ?86, ?88, ?90

CH MODULATION

ON/OFF SWITCH ON

Next: &272, f269

PUMP OVERRUN CHECK

ON/OFF SWITCH ON
CH TEMP SELECTOR MAXIMUM
DHW TEMP SELECTOR MIN

Next: &nff, !f273

CONFIRM DHW DEMAND ENDS

SUMMER/WINTER BUTTON

Next: &5, f276

FURTHER INVESTIGATION FUSE

Next: &nff, f416

DHW OPERATION

SUMMER/WINTER BUTTON SET TO SUMMER
DHW TEMPERATURE SELECTOR TO MAXIMUM

Next: &2, ?426, ?428, ?430, ?432

ELECTRICAL SAFETY CHECKS

ELECTRICAL SAFETY CHECKS

Next: End

BURNER IGNITES PRESSURE LOW

THERMISTOR

Next: End

BURNER IGNITES THEN BAFFLES OUT

FLUE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

LEAD ASSEMBLY 300MM WHITE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

ELECTRODE - SENSING

Next: End

SPARKING PRESENT NO GAS PRESSURE

GAS INLET PRESSURE

Next: End

SPARKING PRESENT, NO GAS PRESSURE

PCB MAIN

Next: End

DHW FLOW RATE

COCK - WATER 15MM DIA

Next: End

DHW FLOW RATE

AIR VENT C/W NEEDLES - SPARES

Next: End

DHW PUMP RUNS

MEMBRANE - SPARES

Next: End

DHW PUMP RUNS

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

FLUE

Next: End

DHW PUMP RUNS

SYSTEM PRESSURE

Next: End

SPARKING PRESENT NO GAS PRESSURE

GAS VALVE

Next: End

SPARKING AND GAS PRESSURE PRESENT BUT NO IGNITION

FLUE

Next: End

CH BURNER IGNITION

Next: End

NO DEMAND

PCB MAIN

Next: End

DHW MODULATION

TEMPERATURE SENSOR C/W CAPS & NEEDLES

Next: End

BOILER TO TEMPERATURE RADIATORS COLD

DIVERTER VALVE C/W NEEDLE

Next: End

BOILER TO TEMPERATURE RADIATORS COLD

CH SYSTEM FILTER

Next: End

BOILER TO TEMPERATURE RADIATORS COLD

PCB MAIN

Next: End

CH NOISY DHW OK

CH SYSTEM FILTER

Next: End

RADIATORS COOL BOILER COOL

THERMISTOR

Next: End

BOILER TO TEMPERATURE RADIATORS COLD

COVER - MEMBRANE C/W SCREWS - SPARES

Next: End

CH NOISY DHW OK

PIPE C/W O-RINGS - BY - PASS - SPARES

Next: End

CH MODULATION

THERMISTOR

Next: End

PUMP OVERRUN CHECK

PCB MAIN

Next: End

ON NO DEMAND

COVER - MEMBRANE C/W SCREWS - SPARES

Next: End

FAN RUNS FOR 10 SECONDS OR LESS

MEMBRANE - SPARES

Next: End

DHW FAN RUNS

TUBE - SILICONE

Next: End

DHW FAN RUNS

VENTURI

Next: End

DHW FAN RUNS

MEMBRANE - SPARES

Next: End

DHW FAN RUNS

THERMISTOR

Next: End

DHW FAN RUNS

TEMPERATURE SENSOR C/W CAPS & NEEDLES

Next: End

LOCKOUT DOES NOT RESET

PCB MAIN

Next: End

FAN RUNS FOR LONGER THAN 10 SECONDS

SWITCH - AIR PRESSURE

Next: End

FAN RUNS FOR LONGER THAN 10 SECONDS

TUBE - SILICONE

Next: End

FAN RUNS FOR LONGER THAN 10 SECONDS

VENTURI

Next: End

FAN RUNS FOR LONGER THAN 10 SECONDS

FLUE

Next: End

RESTRICTED CAUSING POOR AIR FLOW

HEAT EXCHANGER ASSEMBLY (FLUEWAYS)

Next: End

FAN RUNS FOR LONGER THAN 10 SECONDS

LEAD ASSEMBLY - IGNITION

Next: End

FAN RUNS FOR LONGER THAN 10 SECONDS

ELECTRODE - IGNITION

Next: End

FAN RUNS FOR 10 SECONDS OR LESS

THERMOSTAT - OVERHEAT

Next: End

FAN RUNS FOR 10 SECONDS OR LESS

MICROSWITCH C/W CABLE

Next: End

CAUSING NO IGNITION

ELECTRODE - IGNITION

Next: End

NOT RAMPING UP

GAS VALVE

Next: End

DHW PUMP RUNS

FUSE - 2A - 250V - 20MM

Next: End

BLOWING FUSE

MOTOR/PUMP ASSEMBLY

Next: End

BLOWING FUSE

FAN ASSEMBLY

Next: End

BLOWING FUSE

GAS VALVE

Next: End

BLOWING FUSE

ACTUATOR C/W CLIP

Next: End

DHW RUNS HOT THEN COLD

MOTOR/PUMP ASSEMBLY

Next: End

DHW RUNS HOT THEN COLD

HEAT EXCHANGER ASSEMBLY

Next: End

DHW COOL RADIATORS HOT

PCB MAIN

Next: End

DHW COOL RADIATORS COOL

MOTOR/PUMP ASSEMBLY

Next: End

DHW MIXING

PLUMBING ISSUE

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER ASSEMBLY

Next: End

HEAT EXCHANGER NOISY

MOTOR/PUMP ASSEMBLY

Next: End

HEAT EXCHANGER NOISY

HEAT EXCHANGER ASSEMBLY

Next: End

DHW COOL RADS COOL

THERMISTOR

Next: End

DHW COOL RADIATORS COOL

TEMPERATURE SENSOR C/W CAPS & NEEDLES

Next: End

DHW RUNS HOT THEN COLD

THERMISTOR

Next: End

DHW RUNS HOT THEN COLD

TEMPERATURE SENSOR C/W CAPS & NEEDLES

Next: End

BURNER IGNITES PRESSURE LOW

GAS INLET PRESSURE

Next: End

BURNER IGNITES PRESSURE LOW

TEMPERATURE SENSOR C/W CAPS & NEEDLES

Next: End

BURNER IGNITES PRESSURE LOW

PCB MAIN

Next: End

BURNER IGNITES THEN BAFFLES OUT

HEAT EXCHANGER ASSEMBLY (FLUEWAYS)

Next: End

DHW PUMP RUNS

MOTOR/PUMP ASSEMBLY

Next: End

DHW PUMP RUNS

PCB MAIN

Next: End

DHW PUMP RUNS

FLOW SWITCH C/W CABLES - SPARES

Next: End

DHW PUMP RUNS

COVER - MEMBRANE C/W SCREWS - SPARES

Next: End

DHW PUMP RUNS

SWITCH ON/OFF

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

PCB MAIN

Next: End

BURNER IGNITES PRESSURE LOW

GAS VALVE

Next: End

DHW PUMP RUNS

SWITCH - LOW PRESSURE

Next: End

EXTERNAL CONTROLS CALLING

Next: End

CH BURNER IGNITION

TIMER OR LINK

Next: End

DHW MODULATION

GAS VALVE

Next: End

DHW MODULATION

PCB MAIN

Next: End

CH NOISY DHW NOISY

PIPE C/W O-RINGS - BY - PASS - SPARES

Next: End

BOILER TO TEMPERATURE RADIATORS COLD

Next: End

CH NOISY DHW OK

Next: End

RADIATORS COOL BOILER COOL

PCB MAIN

Next: End

BOILER TO TEMPERATURE RADIATORS COLD

ACTUATOR C/W CLIP

Next: End

BOILER TO TEMPERATURE RADIATORS COLD

FLOW SWITCH C/W CABLES - SPARES

Next: End

CH MODULATION

PCB MAIN

Next: End

DHW FLOW RATE

HEAT EXCHANGER

Next: End

BOILER ON NO DEMAND

PCB MAIN

Next: End

BOILER ON NO DEMAND

FLOW SWITCH C/W CABLES - SPARES

Next: End

FAN RUNS FOR 10 SECONDS OR LESS

COVER - MEMBRANE C/W SCREWS

Next: End

DHW FAN RUNS

SWITCH - AIR PRESSURE

Next: End

DHW FAN RUNS

FLOW SWITCH C/W CABLES - SPARES

Next: End

DHW FAN RUNS

COVER - MEMBRANE C/W SCREWS - SPARES

Next: End

DHW FAN RUNS

FAN ASSEMBLY

Next: End

LOCKOUT RESETS

PCB MAIN

Next: End

NOT CREATING ENOUGH PRESSURE

FAN ASSEMBLY

Next: End

FAN RUNS FOR LONGER THAN 10 SECONDS

PCB MAIN

Next: End

FAN RUNS FOR 10 SECONDS OR LESS

PCB MAIN

Next: End

SPARKING AND GAS PRESSURE PRESENT BUT NO IGNITION

INJECTOR

Next: End

MECHANICAL

GAS VALVE

Next: End

SYSTEM PRESSURE RISE

EXPANSION VESSEL

Next: End

FUSE INVESTIGATION

Z DIRECTION CHOICE OR CONTINUE

Next: End

PCB BLOWING FUSE

PCB MAIN - FUSE

Next: End

DHW RUNS HOT THEN COLD

PCB MAIN

Next: End

DHW RUNS HOT THEN COLD

HEAT EXCHANGER

Next: End

DHW COOL RADIATORS HOT

DIVERTER VALVE C/W NEEDLE

Next: End

DHW COOL RADIATORS HOT

ACTUATOR C/W CLIP

Next: End

DHW COOL RADS COOL

PCB MAIN

Next: End

DHW COOL RADIATORS COOL

HEAT EXCHANGER

Next: End

HEAT EXCHANGER NOISY

HEAT EXCHANGER

Next: End

BOILER TO TEMPERATURE, RADIATORS COLD

CHARACTERISTIC TEST FROM OPERATION CH

Next: p238

CH NOISY, DHW OK

CHARACTERISTIC TEST FROM OPERATION CH

Next: p240

CH NOISY, DHW NOISY

CHARACTERISTIC TEST FROM OPERATION CH

Next: !p242

RADIATORS COOL, BOILER COOL

CHARACTERISTIC TEST FROM OPERATION CH

Next: p244

FAN RUNS FOR 10 SECONDS OR LESS

CHARACTERISTIC TEST FROM DHW FAN RUNS

Next: p311

FAN DOES NOT RUN

CHARACTERISTIC TEST FROM DHW FAN RUNS

Next: p345

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: !p411

HEAT EXCHANGER NOISY

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p427

DHW COOL, RADIATORS COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p429

DHW COOL, RADIATORS HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p431

DHW RUNS HOT THEN COLD

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p433

BURNER IGNITES, PRESSURE LOW

CHARACTERISTIC TEST FROM BURNER IGNITES

Next: p399

BURNER IGNITES THEN BAFFLES OUT

CHARACTERISTIC TEST FROM BURNER IGNITES

Next: p85

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM BURNER IGNITES

Next: p87

SPARKING PRESENT, NO GAS PRESSURE

CHARACTERISTIC TEST FROM BURNER IGNITES

Next: p89

SPARKING AND GAS PRESSURE PRESENT BUT NO IGNITION

CHARACTERISTIC TEST FROM BURNER IGNITES

Next: p91

22/08/2018 12:12:07 1808_1_50_1 20/09/2018 10:18:47

22/08/2018 13:49:02

Next: End

DHW MODULATION VOLTS

ENSURE APPLIANCE IS

Next: !p233, f234

TIMER INPUT

ON/OFF SWITCH ON

Next: !p213, !f214

PUMP VOLTS

{GAINPCBACS}
ON/O

Next: !p171, f172

ON OFF SWITCH VOLTS (OUT)

ON/OFF SWITCH ON

Next: p173, f193

SYSTEM PRESSURE

Next: !p199, !f200

DHW FLOW SWITCH

REMOVE THE DHW FLOW SWITCH MICROSWITCH FROM DHW FLOW SWITCH HEAD

Next: !p190, f189

DHW FLOW SWITCH DIAPHRAGM

BOILER DISCHARGED AND DRAINED

Next: !p191, !f192

MAINS POWER IN

Next: !p194, !f195

RESISTANCE DHW SENSOR

{GAINPCBACS}
REMOVE CONNECTOR X5 FROM THE PCB

Next: !p235, !f236

DHW FLOW SWITCH OPERATION RESISTANCE

ELECTRICALLY DISCONNECT FLOW SWITCH AT THE INLINE CONNECTOR

Next: p251, f252

DHW FLOW SWITCH

REMOVE THE DHW FLOW SWITCH MICROSWITCH FROM DHW FLOW SWITCH HEAD

Next: !p266, !f267

RESISTANCE CH SENSOR

DISCONNECT ONE OF THE ORANGE WIRES FROM THE SENSOR

Next: !p270, !f271

FLOW SWITCH DHW

DISCONNECT DHW FLOW SWITCH INLINE CONNECTOR

Next: !p277, f278

INSPECTION DIFFERENTIAL VALVE DHW

REMOVE DHW MICROSWITCH FROM THE DIFFERENTIAL VALVE

Next: !p279, !f280

DHW INLET VALVE

Next: p14, !f15

PUMP FLOW SWITCH DIAPHRAGM

DISCHARGE AND DRAIN BOILER

Next: !p314, !f315

AIR PRESSURE SWITCH TUBES

Next: p348, !f349

DHW FLOW SWITCH

REMOVE THE DHW FLOW SWITCH MICROSWITCH FROM DHW FLOW SWITCH HEAD

Next: !p354, f355

DHW FLOW SWITCH DIAPHRAGM

BOILER DISCHARGED AND DRAINED

Next: !p356, !f357

RESISTANCE CH SENSOR

DISCONNECT ONE OF THE ORANGE WIRES FROM THE SENSOR

Next: p360, !f361

RESISTANCE AIR PRESSURE SWITCH WITH KIT

REMOVE THE WIRES FRO

Next: p367, !f368

AIR PRESSURE SWITCH TUBES

Next: p371, !f372

FURTHER INVESTIGATION FUSE

Next: !p414, !f415

RESISTANCE PUMP (FUSE INVESTIGATION)

REMOVE THE CONNECTOR FROM THE PUMP ASSEMBLY

Next: p417, !f421

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH TEMPERATURE C

Next: !p440, !f441

DIVERTER VALVE VOLTAGE

{GAINPCBACS}
ON/O

Next: !p444, !f445

TEMPERATURE DIFFERENTIAL MAIN HEAT EXCHANGER

ATTACH TEMPERATURE C

Next: !p454, !f455

TIMER OUTPUT

{GAINPCBACS}
ON/O

Next: p207, f123

RESISTANCE DHW SENSOR

{GAINPCBACS}
REMOVE CONNECTOR X5 FROM THE PCB

Next: p98, !f99

FLAME SENSOR ELECTRODE

Next: p106, !f107

FLUE CHECK

Next: !p196, !f197

RESISTANCE GAS VALVE

REMOVE MULTI-CONNECTOR FROM THE GAS VALVE

Next: p114, !f204

VOLTAGE GAS VALVE (NO IGNITION)

Next: !p398, !f117

DHW FILTER/RESTRICTOR

ISOLATE BOILER AND DRAIN DHW

Next: !p274, !f17

SYSTEM PRESSURE SWITCH RESISTANCE

REMOVE CONNECTOR X4 FROM THE PCB

Next: p184, f175

DHW FLOW SWITCH OPERATION RESISTANCE

ELECTRICALLY DISCONNECT FLOW SWITCH AT THE INLINE CONNECTOR

Next: p185, f188

FUSE F1 RESISTANCE

REMOVE THE FUSE FROM THE PCB

Next: !p186, f413

EXTERNAL CONTROLS OUTPUT

ON/OFF SWITCH ON

Next: !p212, !f209

DIVERTER VALVE CH OPERATION

ON/OFF SWITCH ON

Next: p245, f246

BYPASS

DRAIN AND DISCHARGE BOILER

Next: p257, !f268

RESISTANCE CH SENSOR

DISCONNECT ONE OF THE ORANGE WIRES FROM THE SENSOR

Next: !p261, !f262

CH OPERATION

ON/OFF SWITCH ON

Next: p247, !f248

CH SYSTEM FILTER

DRAIN AND DISCHARGE BOILER
REMOVE THE CH SYSTEM FILTER

Next: !p249, !f250

DIVERTER VALVE VOLTS (CH)

{GAINPCBACS}
ON/O

Next: !p265, !f254

CH SYSTEM FILTER

DRAIN AND DISCHARGE BOILER
REMOVE THE CH SYSTEM FILTER

Next: !p259, !f260

PUMP FLOW SWITCH

REMOVE PUMP FLOW MIC

Next: p312, f313

PUMP FLOW SWITCH OPERATION

ON/OFF SWITCH ON

Next: p387, !f390

AIR PRESSURE SWITCH RESISTANCE NORMALLY OPEN

REMOVE THE WIRES FROM THE AIR PRESSURE SWITCH NOTING THEIR LOCATIONS AND MAKE SAFE

Next: p346, f347

DHW FLOW SWITCH OPERATION RESISTANCE

ELECTRICALLY DISCONNECT FLOW SWITCH AT THE INLINE CONNECTOR

Next: p352, f353

VENTURI

Next: !p350, !f351

FAN VOLTS

ON/OFF SWITCH ON

Next: !p358, f359

RESISTANCE DHW SENSOR

{GAINPCBACS}
REMOVE CONNECTOR X5 FROM THE PCB

Next: p362, !f363

LOCK OUT RESET

Next: !p364, !f365

AIR PRESSURE SWITCH AIR DETECT

NOTE THE PRESSURE RE

Next: p369, f370

SPARK ELECTRODE LEADS (CONTINUITY)

Next: p379, !f380

VENTURI

Next: p373, !f374

FLUE CHECK

Next: p375, !f376

INSPECTION FLUEWAYS

Next: !p377, !f378

INSPECTION SPARK ELECTRODES

Next: !p381, !f382

OVERHEAT THERMOSTAT RESISTANCE

REMOVE BOTH WIRES FROM THE BOILER OVERHEAT CUT-OFF

Next: !p388, !f389

INSPECTION SPARK ELECTRODES

Next: !p395, !f396

RESISTANCE GAS VALVE

REMOVE MULTI-CONNECTOR FROM THE GAS VALVE

Next: p83, !f409

RESISTANCE FAN (FUSE INVESTIGATION)

REMOVE WIRES FROM FAN ASSEMBLY

Next: p418, !f422

RESISTANCE GAS VALVE (FUSE INVESTIGATION)

REMOVE MULTI-CONNECTOR FROM THE GAS VALVE

Next: p419, !f423

RESISTANCE DIVERTER VALVE (FUSE INVESTIGATION)

REMOVE CONNECTOR FROM DIVERTER MOTOR ASSEMBLY

Next: !p420, !f424

PUMP LIMPET TEST

Next: p456, !f457

PUMP LIMPET TEST

Next: p446, !f447

DIVERTER VALVE MOTOR HEAD OPERATION

ON/OFF SWITCH ON

Next: !p442, f443

RESISTANCE DHW SENSOR

{GAINPCBACS}
REMOVE CONNECTOR X5 FROM THE PCB

Next: p470, !f479

PUMP LIMPET TEST

Next: p436, !f437

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE C

Next: !p438, f439

RESISTANCE DHW SENSOR

{GAINPCBACS}
REMOVE CONNECTOR X5 FROM THE PCB

Next: p460, !f469

TEMPERATURE DISCREPANCY DHW

Next: p450, !f451

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE C

Next: !p452, f453

CH OPERATION

ON/OFF SWITCH ON

Next: !p458, !f459

RESISTANCE CH SENSOR

DISCONNECT ONE OF THE ORANGE WIRES FROM THE SENSOR

Next: p448, !f468

RESISTANCE CH SENSOR

DISCONNECT ONE OF THE ORANGE WIRES FROM THE SENSOR

Next: p434, !f478

VOLTAGE GAS VALVE (PRESSURE LOW)

Next: p92, f93

FLUE CHECK

Next: !p102, !f103

FLAME SENSE LEAD

Next: p104, !f105

INLET PRESSURE (IGNITION)

ON/OFF SWITCH ON

Next: p112, !f113

FLUE CHECK

Next: p394, !f206

INLET PRESSURE (IGNITION)

ON/OFF SWITCH ON

Next: !p198, !f95

RESISTANCE CH SENSOR

DISCONNECT ONE OF THE ORANGE WIRES FROM THE SENSOR

Next: !p100, !f101

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