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:

BAXI COMBI 130 HE

WARNING - IMPORTA

Next: &3, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

DHW FLOW RATE

Next: &26, f19

CH DEMAND

Next: &14, f676

DHW BURNER ESTABLISH

Next: &7, ?250, ?252

PREHEAT OPERATION

Next: &16, ?417, ?419

SYSTEM PRESSURE RISE

Next: &11, !f341

CH OPERATION

Next: &12, ?332, ?334, ?336, ?388

DHW OPERATION

Next: &13, ?324, ?326, ?328, ?330

OVERRUN/ANTICYCLE

MAINS POWER ON
SE

Next: &nff, !f436

DISPLAY ILLUMINATION

Next: &27, f28

PREHEAT SETTING

Next: &143, !f45

DHW PUMP RUNS

Next: &517, f144

DHW BURNER IGNITION

Next: &8, f460

DHW FAN RUNS

CENTRAL HEATING DEMAND OFF

Next: &459, f518

HOW TO SET THE MULTIMETER TO DIODE CHECK

THE IMAGES BELOW SHO

Next: &nff, !f674

FAULT 1

KIT - HARNESS MV

Next: End

FAULT1

MAINS FUSE

Next: End

FAULT 1

FILTER - ELECTRICAL

Next: End

FAULT 1

FUSE F1

Next: End

FAULT 1 CHOKED

DHW INLET FILTER

Next: End

FAULT 1 DHW DEMAND

KIT - SWITCH - ADAPTOR FLOW - DHW

Next: End

FAULT 1

THERMISTOR - FLOW TEMP RED

Next: End

FAULT 1

THERMISTOR - FLOW TEMP - RED

Next: End

FAULT 1

THERMOSTST - OVERHEAT

Next: End

FAULT 1

THERMOSTAT - OVERHEAT

Next: End

FAULT 1

CONDENSATE TRAP AND DRAIN

Next: End

FAULT 1

CONDENSE SENSE LEAD

Next: End

FAULT 1 CHOKED

FLOW REGULATOR DHW

Next: End

FAULT 1

KIT - SENSING ELECTRODE

Next: End

FAULT 1

HEAT EXCHANGER GAS TO WATER FLUE WAYS

Next: End

FAULT 1

FLUE

Next: End

FAULT 1

PIPE 5 MM NEOPRENE

Next: End

FAULT 1 CLEAN AS NEC

VENTURI

Next: End

FAULT 1

EXPANSION VESSEL

Next: End

FAULT 1

DIVERTER VALVE SPINDLE

Next: End

FAULT 14 DV DRIVE FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 2

PUMP

Next: End

FAULT 2

THERMISTOR - FLOW TEMP RED

Next: End

FAULT 2

THERMISTOR - FLOW TEMP - RED

Next: End

FAULT 3

FAN

Next: End

FAULT 15 FAN DRIVE FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 2

CONDENSATE TRAP AND DRAIN

Next: End

FAULT 3

THERMISTOR - FLOW TEMP RED

Next: End

FAULT 3

THERMISTOR - FLOW TEMP - RED

Next: End

FAULT 3

PUMP

Next: End

FAULT 2

DIVERTER VALVE SPINDLE

Next: End

FAULT 5

PUMP

Next: End

FAULT 02 LOW VOLTS FAULT

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 4

THERMISTOR - FLOW TEMP - RED

Next: End

FAULT 1 RESET OR REPLACE

APPLIANCE TEMPERATURE SETTING

Next: End

FAULT 5

THERMISTOR - FLOW TEMP - RED

Next: End

FAULT 3

CONDENSATE TRAP AND DRAIN

Next: End

FAULT 4

THERMISTOR - FLOW TEMP RED

Next: End

FAULT 6

THERMISTOR - FLOW TEMP - RED

Next: End

FAULT 21 OVERRUN/ANTICYCLE FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 1

CH FILTER

Next: End

FAULT 2

CH FILTER

Next: End

FAULT 2 PREHEAT SETTING

DISPLAY PCB

Next: End

FAULT 3

CH FILTER

Next: End

FAULT 05 DHW DEMAND FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 03 FAN FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 1

PCB - FAN DRIVER

Next: End

FAULT 1

HARNESS - LOW VOLTAGE

Next: End

FAULT 1

VALVE BODY

Next: End

FAULT 09 DV FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

BACKED UP

CONDENSATE TRAP AND DRAIN

Next: End

WATER INGRESS PREVENTING VALVE OPENING

PIPE 5 MM NEOPRENE

Next: End

FAULT 12 GAS VALVE FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 2

FAN

Next: End

FAULT 1

PIPE - BURNER FEED

Next: End

NOT IGNITING

FLUE

Next: End

RESTRICTED OR BLOCKED

PIPE 5 MM NEOPRENE

Next: End

BACKED UP 2

CONDENSATE TRAP AND DRAIN

Next: End

BURNER DOES NOT IGNITE

KIT - ELECTRODE

Next: End

FAULT 1 REPAIR OR REPLACE

BURNER

Next: End

DOES NOT IGNITE

KIT - ELECTRODE (NO WIRES)

Next: End

OPEN CIRCUIT OR HIGH RESISTANCE

LEAD - ELECTRODE

Next: End

GAS VALVE HARNESS

KIT - HARNESS MV

Next: End

BLANK FOR DIODE TEST

Z DIRECTION CHOICE OR CONTINUE

Next: End

FAULT 13 EXTERNAL CONTROL SUPPLY

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT

KIT - HARNESSS MV

Next: End

FAULT 1

TIMER/LINK

Next: End

FAULT 08 CH DEMAND FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

STUCK MADE

KIT - SWITCH - ADAPTOR FLOW - DHW

Next: End

RESTRICTED OR BLOCKED

VENTURI

Next: End

FAULT 1

PUMP

Next: End

FAULT 1

TRANSFORMER

Next: End

FAULT 1

Next: End

FAULT 01 MAINS INPUT

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 1 PARTIALY CLOSED

VALVE - ANGLED - WATER

Next: End

FAULT 06 LOW VOLT SU

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 04 PUMP FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 11 CONDENSE SENSE

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 10 FLAME RECTIFICATION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 1

HARNESS - LOW VOLTAGE

Next: End

FAULT 2 REPAIR OR REPLACE

BURNER

Next: End

FAULT 2

VALVE BODY

Next: End

FAULT 3

VALVE - PLASTIC - DIVERTER

Next: End

FAULT 2

KIT - PLATE HEAT EXCHANGER

Next: End

FAULT 2

PCB - FAN DRIVER

Next: End

FAULT 3

KIT - PLATE HEAT EXCHANGER

Next: End

FAULT 16 TEMP CALIBRATION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 3

VALVE BODY

Next: End

FAULT 17 TEMP CALIBRATION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 19 TEMP CALIBRATION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 3 NO SET

DISPLAY PCB

Next: End

FAULT 18 PREHEAT FUNCTION

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 1

HEAT EXCHANGER GAS TO WATER

Next: End

FAULT 1

Next: End

FAULT 2

Next: End

FAULT1

HARNESS - LOW VOLTAGE

Next: End

FAULT 2

HARNESS - LOW VOLTAGE

Next: End

FAULT 1

FAN

Next: End

INSUFFICIENT

GAS INLET PRESSURE

Next: End

FAULT 1

FLOW SWITCH

Next: End

FAULT 1

VALVE - PLASTIC - DIVERTER

Next: End

FAULT 2 MECH

KIT - VALVE MULTIFUNCTIONAL

Next: End

OPENING BUT WRONG MIX

KIT - VALVE MULTIFUNCTIONAL

Next: End

NO SPARK

KIT - PCB ELECTRONIC CONTROL/DISPLAY

Next: End

FAULT 1

TERMINAL LINK

Next: End

FAULT

ROOM THERMOSTAT

Next: End

FAULT1

KIT - HARNESS MV

Next: End

FAULT 2

VALVE - PLASTIC - DIVERTER

Next: End

FAULT 1

KIT - PLATE HEAT EXCHANGER

Next: End

FAULT 1 NO DISPLAY

DISPLAY PCB

Next: End

Burner stable BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM DHW BURNER ESTABLISH

Next: p254

Burner unstable

CHARACTERISTIC TEST FROM DHW BURNER ESTABLISH

Next: p289

DHW cold, radiators warm

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p342

Noisy operation

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p327

DHW cool, radiators cool

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p362

Cycles hot and cold when used for long spells

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p331

Boiler to temperature, radiators do not heat

CHARACTERISTIC TEST FROM CH OPERATION

Next: p333

Boiler noisy/kettling

CHARACTERISTIC TEST FROM CH OPERATION

Next: p335

Boiler temperature low, radiators temperature low

CHARACTERISTIC TEST FROM CH OPERATION

Next: p337

Boiler fires but cuts out before temperature is reached

CHARACTERISTIC TEST FROM CH OPERATION

Next: p407

Display board would not set

CHARACTERISTIC TEST FROM PREHEAT OPERATION

Next: !p418

Display board set but no preheat

CHARACTERISTIC TEST FROM PREHEAT OPERATION

Next: !p420

NO DROP IN THE STANDING PRESSURE OBSERVED

CHARACTERISTIC TEST FROM GAS USAGE

Next: p572

INLET PRESSURE DROPS BELOW 18MB

CHARACTERISTIC TEST FROM GAS USAGE

Next: !p571

24/11/2017 09:55:48 1711_1_50_1 09/01/2018 08:44:39

27/11/2017 08:02:47

Next: End

PUMP VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p145, f232

TRANSFORMER OUTPUT VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p208, f179

TRANSFORMER INPUT VOLTAGE

USE INSULATION MAT AS NECESSARY

Next: !p180, f182

MAINS POWER SUPPLY

{ISOLATEMAINSPOWER}<

Next: p183, f184

MAINS POWER SUPPLY FUSE RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE THE FUSE FROM THE APPLIANCE MAINS POWER SUPPLY I.E. FUSED SPUR

Next: p185, !f186

DHW INLET SERVICE VALVE

{ISOLATEMAINSPOWER}

Next: !p20, f21

DHW INLET FILTER

{ISOLATEMAINSPOWER}
DHW CIRCUIT OFF AND DRAINED

Next: p22, !f23

CONDENSE RESISTANCE TO EARTH

{ISOLATEMAINSPOWER}

Next: p233, f244

CONDENSATE TRAP AND DRAIN

{ISOLATEMAINSPOWER}

Next: p245, !f246

FLAME SENSE ELECTRODE

{ISOLATEMAINSPOWER}
REMOVE FLAME SENSE ELECTRODE

Next: !p257, !f258

LOW VOLTAGE OUTPUT

{ISOLATEMAINSPOWER}<

Next: p29, f177

DIVERTER VALVE VOLTAGE (DHW)

{ISOLATEMAINSPOWER}<

Next: !p347, !f348

PUMP LIMPET TEST (DHW)

Next: p442, !f358

FAN SPEED AND PRESSURE CHECK

{ISOLATEMAINSPOWER}<

Next: p377, !f378

DIVERTER VALVE SPINDLE

{ISOLATEMAINSPOWER}
REMOVE DIVERTER VALVE ACTUATOR HEAD TO EXPOSE THE DIVERTER VALVE SPINDLE

Next: !p396, !f397

GAS USAGE

{ISOLATEMAINSPOWER}
ATTACH U GAUGE TO INLET PRESSURE TEST POINT

Next: p600, ?568, ?570

VOLTAGE TO FAN BOARD RED/BLUE

{ISOLATEMAINSPOWER}
USE INSULATION MAT AS NECESSARY

Next: p519, f520

VOLTAGE FROM CONTROL BOARD RED/BLUE

USE INSULATION MAT AS NECESSARY
REMOVE THE MAIN CONTROL BOX COVER TO EXPOSE THE CONTROL PCB

Next: !p521, !f522

VOLTAGE FROM CONTROL BOARD YELLOW/BLUE

USE INSULATION MAT AS NECESSARY

Next: !p525, !f526

DIVERTER VALVE POSITION (DHW)

Next: !p575, f576

DIVERTER VALVE SPINDLE

{ISOLATEMAINSPOWER}
REMOVE DIVERTER VALVE ACTUATOR HEAD TO EXPOSE THE DIVERTER VALVE SPINDLE

Next: p577, !f578

ELECTRODES SPARK AND EARTH AND GAP

{ISOLATEMAINSPOWER}
REMOVE THE SPARK ELECTRODE ASSEMBLY

Next: p660, !f639

DHW FLOW SWITCH RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p692, !f707

EXTERNAL CONTROL INPUT

USE INSULATION MAT AS NECESSARY

Next: p695, !f696

CONTROL VOLTAGE RTC OUTPUT

USE INSULATION MAT AS NECESSARY

Next: !p699, f700

CONTROL VOLTAGE RTC INPUT

USE INSULATION MAT AS NECESSARY

Next: !p701, !f702

PUMP HARNESS

{ISOLATEMAINSPOWER}

Next: !p159, !f160

FUSE F1

{ISOLATEMAINSPOWER}<

Next: !p189, !f190

EMC FILTER

{ISOLATEMAINSPOWER}
DISCONNECT MAINS INPUT PLUG FROM REAR OF THE EMC FILTER

Next: !p187, !f188

DHW FLOW REGULATOR

{ISOLATEMAINSPOWER}
DHW CIRCUIT OFF AND DRAINED

Next: !p88, !f25

DHW FLOW SWITCH RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p234, !f235

RETURN SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT BLUE LEADS FROM THE RETURN SENSOR

Next: p236, !f237

FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED LEADS FROM THE FLOW SENSOR

Next: p238, !f239

FLOW SENSOR RESISTANCE (OVERHEAT)

{ISOLATEMAINSPOWER}<

Next: p240, !f241

OVERHEAT SENSOR RESISTANCE (CASE)

{ISOLATEMAINSPOWER}<

Next: !p242, !f243

CONDENSE LEAD INTEGRITY

{ISOLATEMAINSPOWER}

Next: !p247, !f248

FLAME RECTIFICATION VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p255, f256

SENSING TUBE

{ISOLATEMAINSPOWER}
REMOVE SENSING TUBE FROM GAS VALVE

Next: p296, !f302

DISPLAY BOARD VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p89, !f40

PRIMARY HEAT EXCHANGER FLUE WAYS

{ISOLATEMAINSPOWER}

Next: p291, !f292

FLUE CHECK

Next: !p293, !f294

FAN AIR INTAKE CHECK

{ISOLATEMAINSPOWER}

Next: p290, !f303

CH OPERATION CHECK

Next: !p355, f356

CONDENSATE TRAP AND DRAIN

{ISOLATEMAINSPOWER}

Next: p382, !f383

DIVERTER VALVE POSITION (CH)

Next: p390, f395

PUMP LIMPET TEST (CH)

Next: p398, !f399

CHECK TEMPERATURE SETTING

Next: p402, !f403

DIVERTER VALVE POSITION (DHW)

Next: p343, f344

DIVERTER VALVE SPINDLE

{ISOLATEMAINSPOWER}
REMOVE DIVERTER VALVE ACTUATOR HEAD TO EXPOSE THE DIVERTER VALVE SPINDLE

Next: !p345, !f346

RETURN SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT BLUE LEADS FROM THE RETURN SENSOR

Next: p363, !f364

FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED LEADS FROM THE FLOW SENSOR

Next: p369, !f366

GAS RATE

Next: !p381, f376

FAN VOLTAGE (TEST 7)

{ISOLATEMAINSPOWER}<

Next: !p379, !f380

RETURN SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT BLUE LEADS FROM THE RETURN SENSOR

Next: p384, !f385

FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED LEADS FROM THE FLOW SENSOR

Next: !p386, !f387

PUMP LIMPET TEST (CH)

Next: p445, !f392

FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED LEADS FROM THE FLOW SENSOR

Next: p448, !f401

FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED LEADS FROM THE FLOW SENSOR

Next: !p404, !f405

CONDENSATE TRAP AND DRAIN

{ISOLATEMAINSPOWER}

Next: p408, !f409

FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED LEADS FROM THE FLOW SENSOR

Next: p410, !f415

RETURN SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT BLUE LEADS FROM THE RETURN SENSOR

Next: !p412, !f414

CH FILTER CHECK

{ISOLATEMAINSPOWER}
CH ISOLATING VALVES OFF
BOILER DISCHARGED AND DRAINED

Next: !p443, !f444

CH FILTER CHECK

{ISOLATEMAINSPOWER}
CH ISOLATING VALVES OFF
BOILER DISCHARGED AND DRAINED

Next: !p446, !f447

CH FILTER CHECK

{ISOLATEMAINSPOWER}
CH ISOLATING VALVES OFF
BOILER DISCHARGED AND DRAINED

Next: !p449, !f450

VOLTAGE TO FAN BOARD YELLOW/BLUE

USE INSULATION MAT AS NECESSARY

Next: p523, f524

VOLTAGE TO FAN

{ISOLATEMAINSPOWER}
DISCONNECT FAN HARNESS FROM FAN

Next: p527, !f528

RESISTANCE FAN HARNESS

{ISOLATEMAINSPOWER}
DISCONNECT FAN HARNESS FROM FAN

Next: !p529, !f530

PRIMARY FLOW SWITCH RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p573, f574

INSPECTION CONDENSATE PIPE

Next: p581, !f582

DIVERTER VALVE VOLTAGE (DHW)

{ISOLATEMAINSPOWER}<

Next: !p579, !f580

SENSING TUBE

{ISOLATEMAINSPOWER}
REMOVE SENSING TUBE FROM GAS VALVE

Next: p583, !f584

GAS VALVE VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p666, !f586

FAN SPEED AND PRESSURE CHECK

{ISOLATEMAINSPOWER}<

Next: p596, !f597

INJECTOR TUBE

{ISOLATEMAINSPOWER}

Next: !p598, !f599

INSPECTION CONDENSATE PIPE

Next: p608, !f635

INSPECTION FAN ASSEMBLY AIR INTAKE

{ISOLATEMAINSPOWER}

Next: p616, !f708

SENSING TUBE

{ISOLATEMAINSPOWER}
REMOVE SENSING TUBE FROM GAS VALVE

Next: p624, !f633

INSPECTION FLUE

Next: p636, !f632

OBSERVATION SPARKING AT ELECTRODE

{ISOLATEMAINSPOWER}<

Next: p656, f637

BURNER

{ISOLATEMAINSPOWER}
REMOVE COMBUSTION COVER

Next: !p659, !f658

RESISTANCE SPARK ELECTRODE (NO WIRES)

{ISOLATEMAINSPOWER}<

Next: p661, !f662

ELECTRODE LEADS

{ISOLATEMAINSPOWER}<

Next: !p675, !f665

DIODE CHECK GAS VALVE HARNESS

{ISOLATEMAINSPOWER}<

Next: p595, !f672

EXTERNAL CONTROL OUTPUT

{ISOLATEMAINSPOWER}<

Next: p693, f694

DIVERTER VALVE VOLTAGE (CH)

Next: !p705, !f706

CONTROL VOLTAGE CLOCK INPUT

{ISOLATEMAINSPOWER}
USE INSULATION MAT AS NECESSARY

Next: p697, f698

CONTROL VOLTAGE OUTPUT CLOCK

USE INSULATION MAT AS NECESSARY

Next: !p703, !f704

System Information

Total Tests: 228

Sequence Logic: Decoded from encrypted .seq file

Navigation: Dynamic based on pass/fail results

Source: 4731307 GW SWIFTFLOW 100 SIT Control