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:

47-581-43 RAVENHEAT CSI 85 AAA 780 SERIES

GLOBAL PAGE

Next: &2, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

INFORMATION CASE REMOVAL

Next: &4, !f5

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &146, !f8

INFORMATION BOILER SETUP

Next: &155, !f7

SOLID RED LOCKOUT LED

OUTSIDE MODEL

Next: &nff, f127

FLASHING RED LOCKOUT LED

OUTSIDE MODEL

Next: &nff, f18

FUSE INVESTIGATION DUMMY

OUTSIDE MODEL

Next: &nff, f32

OBSERVATION DHW FLOW RATE

Next: &147, f148

OBSERVATION PUMP RUNS

Next: &221, f196

OBSERVATION BOILER STANDBY

ENSURE NO DEMAND FOR CH OR DHW

Next: &3, ?156, ?182, ?184

OBSERVATION FAN RUNS

REMOVE OUTER COMBUSTION CHAMBER

Next: &238, ?903, ?905

OBSERVATION BURNER IGNITES AND ESTABLISHES

REFIT COMBUSTION CHAMBER IF IT WAS REMOVED ON PREVIOUS TEST

Next: &359, ?239, ?241, ?243, ?245, ?247

PRESSURE BURNER MAX AND MIN

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: &369, ?724, ?726

OBSERVATION BOILER RESPONDS TO CH DEMAND

Next: &397, f370

OPERATION DHW

Next: &508, ?398, ?400, ?402, ?404

OBSERVATION DHW MODULATION

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: &521, f514

OPERATION CH

Next: &572, ?522, ?524, ?526

OBSERVATION CH MODULATION

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: &583, f573

OBSERVATION PUMP OVERRUN

Next: &nff, !f584

HOW TO SET MULTIMETER TO DIODE MODE

THE IMAGES BELOW SHO

Next: &nff, !f586

FLASHING RED

POTENTIOMETER (DHW)

Next: End

FLASHING RED

Next: End

FLASHING RED

HEAT EXCHANGER - CONDENSING

Next: End

SOLID RED

SENSOR - FLUE

Next: End

OBSERVATION DHW FLOW RATE

DHW ISOLATION VALVE

Next: End

OBSERVATION DHW FLOW RATE

WATER SUPPLY

Next: End

OBSERVATION BOILER STANDBY

SWITCH (ON / OFF)

Next: End

OBSERVATION BOILER STANDBY

MAINS FUSE

Next: End

OBSERVATION BOILER STANDBY

FUSE 2A 20MM

Next: End

FLASHING RED

GAS INLET PRESSURE

Next: End

OBSERVATION BOILER STANDBY - NO POWER LIGHT

HARNESS

Next: End

OBSERVATION BOILER STANDBY

FROST PROTECTION

Next: End

OBSERVATION BOILER STANDBY

OPEN TAP OR LEAK

Next: End

OBSERATION PUMP RUNS - PUMP

HARNESS

Next: End

OBSERATION PUMP RUNS

FLOW SWITCH ASSEMBLY

Next: End

OBSERATION PUMP RUNS - FLOW SWITCH

HARNESS

Next: End

OBSERATION PUMP RUNS - NO POWER TO FLOW SWITCH

MAIN PCB

Next: End

OBSERATION PUMP RUNS

SENSOR - CH

Next: End

FLASHING RED - OPEN CIRCUIT

THERMOSTAT (OVERHEAT)

Next: End

OBSERATION PUMP RUNS

SENSOR (DHW)

Next: End

FLASHING RED - STUCK IN FAULT

MAIN PCB

Next: End

FLASHING RED - NO POWER TO PUMP

MAIN PCB

Next: End

FLASHING RED - PUMP

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING FLASHING RED

THERMOSTAT (OVERHEAT)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

GAS INLET PRESSURE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION - SOLENOID FAULTY

GAS VALVE - HONEYWELL W/O PILOT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

MAIN PCB

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

ELECTRODE (SPARK)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

GAS INLET PRESSURE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

CABLES - SENSING AND SPARK

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

ELECTRODE (RECTIFICATION)

Next: End

FUSE INVESTIGATION

FAN

Next: End

OPERATION DHW - DHW RUNS HOT COLD

PUMP - CIRCULATION

Next: End

OPERATION DHW - DHW RUNS HOT COLD DHW SENSOR

SENSOR (DHW)

Next: End

OPERATION DHW - DHW RUNS HOT COLD

HEAT EXCHANGER - CONDENSING

Next: End

OPERATION DHW - DHW TOO HOT

KNOB (DHW)

Next: End

OPERATION DHW - DHW TOO HOT DHW SENSOR

SENSOR (DHW)

Next: End

OPERATION DHW - TOO COOL RADS HEAT

MAIN PCB

Next: End

OPERATION DHW - TOO COOL RADS HEAT

HARNESS

Next: End

OPERATION DHW - DHW TOO COOL

KNOB (DHW)

Next: End

OPERATION DHW - DHW TOO COOL

PUMP - CIRCULATION

Next: End

OBSERVATION DHW - DHW TOO COOL

HEAT EXCHANGER - CONDENSING

Next: End

FUSE INVESTIGATION - PUMP

HARNESS

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND - NO VOLTAGE TO TIMER

MAIN PCB

Next: End

FUSE INVESTIGATION - MODULATION SOLENOID

GAS VALVE - HONEYWELL W/O PILOT

Next: End

INFORMATION CASE REMOVAL

Z REDIRECT

Next: End

OPERATION DHW - DHW RUNS HOT COLD

SENSOR - CH

Next: End

FUSE INVESTIGATION - MAIN SOLENOID

GAS VALVE - HONEYWELL W/O PILOT

Next: End

OPERATION DHW - DHW TOO HOT

POTENTIOMETER (DHW)

Next: End

OBSERVATION DHW MODULATION

KNOB (DHW)

Next: End

OBSERVATION DHW MODULATION

POTENTIOMETER (DHW)

Next: End

OBSERVATION DHW MODULATION

SENSOR (DHW)

Next: End

OPERATION CH RADS DO NOT HEAT

SYSTEM PRESSURE

Next: End

FLASHING RED - RUNNING SLOW

PUMP - CIRCULATION

Next: End

OPERATION CH RADS DO NOT HEAT

CH ISOLATION VALVE

Next: End

OPERATION CH RADS DO NOT HEAT

PUMP - CIRCULATION

Next: End

OPERATION CH RADS DO NOT HEAT

MAIN PCB

Next: End

OPERATION CH RADS DO NOT HEAT

HARNESS

Next: End

OPERATION CH RADS DO NOT HEAT

DIVERTER VALVE CARTRIDGE

Next: End

EXCESSIVE SYSTEM PRESSURE

EXPANSION VESSEL 6 LITRE

Next: End

OPERATION CH - RADS COOL

KNOB (CH)

Next: End

OPERATION CH - RADS COOL

SENSOR - CH

Next: End

OPERATION CH - RADS COOL

POTENTIOMETER (CH)

Next: End

FLASHING RED

SENSOR - CH

Next: End

OPERATION CH - RADS DO NOT HEAT

Next: End

FLASHING RED

SENSOR (DHW)

Next: End

OBSERVATION CH MODULATION

POTENTIOMETER (CH)

Next: End

OBSERVATION CH MODULATION

SENSOR - CH

Next: End

OBSERVATION CH MODULATION

KNOB (CH)

Next: End

OBSERVATION PUMP OVERRUN

MAIN PCB

Next: End

HOW TO SET MULTIMETER TO DIODE MODE

Z REDIRECT

Next: End

OBSERVATION DHW FLOW RATE

FLOW SWITCH ASSEMBLY

Next: End

OBSERVATION BOILER STANDBY SOLID RED

SENSOR - FLUE

Next: End

OBSERVATION BOILER STANDBY - NO LIGHT ALL OFF

MAIN PCB

Next: End

OBSERVATION BOILER STANDBY - FAULTY LED

Z REDIRECT

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND

SWITCH (SUMMER / WINTER)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

COVER - COMBUSTION CHAMBER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

TRAY - CONDENSING

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

FAN

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

HEAT EXCHANGER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

HEAT EXCHANGER - CONDENSING

Next: End

FLASHING RED - MODUREG

GAS VALVE - HONEYWELL W/O PILOT

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND - NO VOLTAGE TO ROOM STAT

MAIN PCB

Next: End

INFORMATION BOILER SETUP

Z REDIRECT

Next: End

OBSERVATION BOILER STANDBY

FLOW SWITCH ASSEMBLY

Next: End

PRESSURE BURNER MAX AND MIN

GAS INLET PRESSURE

Next: End

PRESSURE BURNER MAX AND MIN - MODUREG

GAS VALVE - HONEYWELL W/O PILOT

Next: End

PRESSURE BURNER MAX AND MIN

POTENTIOMETER (DHW)

Next: End

OPERATION DHW - DHW COOL

POTENTIOMETER (DHW)

Next: End

OPERATION DHW - DHW TOO COOL DHW SENSOR

SENSOR (DHW)

Next: End

OPERATION DHW - DHW COOL

SENSOR - CH

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND - TIMER

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH - NOT CROSS LIGHTING

GAS INLET PRESSURE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

INJECTOR

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

INJECTOR

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

INJECTOR

Next: End

TYPE OF DIAGNOSTIC PROCEDURE

Z REDIRECT

Next: End

OBSERVATION BOILER STANDBY

POWER LED

Next: End

OBSERVAITON BOILER STANDBY

ROOM STAT OR TIMER

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND

LINK M5

Next: End

OPERATION CH - RADS COOL

PCB POTENTIOMETER

Next: End

OBSERVATION BOILER STANDBY

PCB JUMPER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - NO DC SUPPLY TO FAN BOARD

MAIN PCB

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - NO VOLTAGE TO APS

PCB - FAN CONTROL

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - APS

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - NO IGNITION VOLTAGE

PCB - FAN CONTROL

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

COVER - COMBUSTION CHAMBER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

TRAY - CONDENSING

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

FLUE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

FAN

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

HEAT EXCHANGER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

HEAT EXCHANGER - CONDENSING

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - M3 TO FAN BOARD

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING FLASHING RED

CABLES - SENSING AND SPARK

Next: End

OBSERVATION BOILER STANDBY SOLID RED LOCKOUT

SWITCH - PRESSURE - LOW WATER

Next: End

SOLID RED

SWITCH - PRESSURE - LOW WATER

Next: End

OBSERVATION FAN RUNS

SENSOR - CH

Next: End

OBSERVATION FAN RUNS

SENSOR (DHW)

Next: End

OBSERVATION FAN RUNS

POTENTIOMETER (DHW)

Next: End

OBSERVATION FAN RUNS - PCB TO FAN BOARD

HARNESS

Next: End

OBSERVATION FAN RUNS - FAN

HARNESS

Next: End

OBSERVATION FAN RUNS - CYCLING

MAIN PCB

Next: End

OBSERVATION FAN RUNS - CYCLING - DC

MAIN PCB

Next: End

FLASHING RED

SYSTEM PRESSURE

Next: End

FLASHING RED

GAUGE - WATER

Next: End

FLASHING RED - NO VOLTAGE TO GAS VALVE

MAIN PCB

Next: End

FLASHING RED

HEAT EXCHANGER - DHW

Next: End

FLASHING RED

HEAT EXCHANGER

Next: End

FLASHING RED

NO FAULT - OVERHEAT INVESTIGATION

Next: End

FLASHING RED - NOT SHUTTING DOWN

MAIN PCB

Next: End

FLASHING RED - TRIPPING EARLY

THERMOSTAT (OVERHEAT)

Next: End

SOLID RED

Z REDIRECT

Next: End

SOLID RED

SYSTEM PRESSURE

Next: End

SOLID RED

GAUGE - WATER

Next: End

SOLID RED - FLUE SENSOR

MAIN PCB

Next: End

SOLID RED - FLUE SENSOR

HARNESS

Next: End

OBSERVATION DHW FLOW RATE

HEAT EXCHANGER - DHW

Next: End

OBSERVATION BOILER STANDBY - NO POWER LIGHT

MAIN PCB

Next: End

OBSERVATION BOILER STANDBY - MAINS FUSE

Z REDIRECT

Next: End

OBSERVATION BOILER STANDBY - PCB FUSE

Z REDIRECT

Next: End

OBSERVATION BOILER STANDBY

Next: End

OBSERATION PUMP RUNS

PUMP - CIRCULATION

Next: End

OBSERATION PUMP RUNS

DETECTOR - FLOW

Next: End

OBSERATION PUMP RUNS - IGNORING DEMAND

MAIN PCB

Next: End

FLASHING RED - OVERHEAT STAT

HARNESS

Next: End

OBSERATION PUMP RUNS - CH THERMISTOR

HARNESS

Next: End

OBSERATION PUMP RUNS - DHW THERMISTOR

HARNESS

Next: End

FLASHING RED - NOT RUNNING

PUMP - CIRCULATION

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING FLASHING RED - OVERHEAT

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING FLASHING RED

MAIN PCB

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION - GAS VALVE

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

GAS VALVE ADJUSTMENT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

GAS VALVE ADJUSTMENT

Next: End

FUSE INVESTIGATION - FAN

HARNESS

Next: End

OPERATION DHW - DHW RUNS HOT COLD

GAUGE - WATER

Next: End

FUSE INVESTIGATION

NO FAULT FUSE INVESTIGATION

Next: End

OPERATION DHW - DHW RUNS HOT / COLD

SYSTEM PRESSURE

Next: End

OPERATION DHW - DHW RUNS HOT COLD - BURNER PRESSURE OK

MAIN PCB

Next: End

OPERATION DHW - DHW RUNS HOT COLD

HEAT EXCHANGER - DHW

Next: End

OPERATION DHW - DHW RUNS HOT COLD

HEAT EXCHANGER

Next: End

OPERATION DHW - DHW TOO HOT

MAIN PCB

Next: End

OPERATION DHW - TOO COOL RADS HEAT

DIVERTER VALVE CARTRIDGE

Next: End

OPERATION DHW - TOO COOL RADS HEAT

SWITCH MOTOR - DIVERTER VALVE

Next: End

OPERATION DHW - DHW TOO COOL

GAUGE - WATER

Next: End

FUSE INVESTIGATION

PUMP - CIRCULATION

Next: End

OPERATION DHW - DHW TOO COOL

SYSTEM PRESSURE

Next: End

OPERATION DHW - DHW TOO COOL

HEAT EXCHANGER - DHW

Next: End

OPERATION DHW - DHW TOO COOL

HEAT EXCHANGER

Next: End

OPERATION DHW - DHW COOL

INJECTOR

Next: End

FUSE INVESTIGATION - GAS VALVE MODUREG

HARNESS

Next: End

FUSE INVESTIGATION - GAS VALVE MAIN SOLENOID

HARNESS

Next: End

OBSERVATION DHW MODULATION

MAIN PCB

Next: End

OPERATION CH RADS DO NOT HEAT

SWITCH MOTOR - DIVERTER VALVE

Next: End

OPERATION CH RADS DO NOT HEAT

Next: End

EXCESSIVE SYSTEM PRESSURE

EXPANSION VESSEL PIPE

Next: End

OBSERVATION CH MODULATION

MAIN PCB

Next: End

OBSERVATION BOILER STANDBY SOLID RED - FLUE SENSOR

MAIN PCB

Next: End

OBSERVATION BOILER STANDBY SOLID RED - FLUE SENSOR

HARNESS

Next: End

OBSERVATION BOILER STANDBY SOLID RED

SYSTEM PRESSURE

Next: End

OBSERVATION BOILER STANDBY SOLID RED

GAUGE - WATER

Next: End

FLASHING RED - MIN WRONG

GAS VALVE ADJUSTMENT

Next: End

OBSERVATION BOILER STANDBY SOLID RED - LOW PRESSURE

MAIN PCB

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND - SUMMER / WINTER SWITCH

HARNESS

Next: End

FLASHING RED - MODUREG

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

FLUE

Next: End

FLASHING RED - MAX WRONG

GAS VALVE ADJUSTMENT

Next: End

OBSERVATION BOILER STANDBY - FIRING NO DEMAND

HARNESS

Next: End

OBSERVATION BOILER STANDBY

DETECTOR - FLOW

Next: End

PRESSURE BURNER MAX AND MIN - MIN WRONG

GAS VALVE ADJUSTMENT

Next: End

PRESSURE BURNER MAX AND MIN - MODUREG

HARNESS

Next: End

PRESSURE BURNER MAX AND MIN - MAX WRONG

GAS VALVE ADJUSTMENT

Next: End

PRESSURE BURNER MAX AND MIN - NO VOLTAGE TO GAS VALVE

MAIN PCB

Next: End

OPERATION DHW - DHW TOO COOL

MAIN PCB

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND

TIMER - DIGITAL

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH - NOT CROSS LIGHTING

GAS VALVE ADJUSTMENT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

MAIN PCB

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

BURNER

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND

MAIN PCB

Next: End

OPERATION CH - RADS COOL

MAIN PCB

Next: End

OBSERVATION BOILER STANDBY - FIRING NO DEMAND

MAIN PCB

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - LOW VOLTAGE TO FAN

PCB - FAN CONTROL

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - DC SUPPLY TO FAN BOARD

HARNESS

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - NO REST VOLTAGE

SWITCH - AIR PRESSURE - MODULATING

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

TUBE 0 5M NYLON - PRESSURE SWITCH

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED

VENTURI

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - NOT SENSING PRESSURE

SWITCH - AIR PRESSURE - MODULATING

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING SOLID RED - IGNORING DEMAND

MAIN PCB

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING FLASHING RED

ELECTRODE (SPARK)

Next: End

OBSERVATION BOILER STANDBY - LOW WATER PRESSURE SWITCH

HARNESS

Next: End

OBSERVATION BOILER STANDBY

PCB - FAN CONTROL

Next: End

OBSERVATION BOILER STANDBY - SOLID RED

SWITCH - AIR PRESSURE - MODULATING

Next: End

OBSERVATION BOILER STANDBY - SOLID RED

TUBE 0 5M NYLON - PRESSURE SWITCH

Next: End

OBSERVATION BOILER STANDBY - SOLID RED

VENTURI

Next: End

SOLID RED - LOW WATER PRESSURE SWITCH

HARNESS

Next: End

SOLID RED - LOW PRESSURE

MAIN PCB

Next: End

SOLID RED

PCB - FAN CONTROL

Next: End

SOLID RED

SWITCH - AIR PRESSURE - MODULATING

Next: End

SOLID RED

TUBE 0 5M NYLON - PRESSURE SWITCH

Next: End

SOLID RED

VENTURI

Next: End

OBSERVATION FAN RUNS

MAIN PCB

Next: End

OBSERVATION FAN RUNS

PCB - FAN CONTROL

Next: End

OBSERVATION FAN RUNS

FAN

Next: End

OBSERVATION FAN RUNS - CYCLING

PCB - FAN CONTROL

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND - ROOM STAT

HARNESS

Next: End

OBSERVATION BOILER RESPONDS TO CH DEMAND - ROOM STAT PERM

HARNESS

Next: End

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p109

PRESSURE ON GAUGE DOES NOT INCREASE WHEN WATER ADDED TO SYSTEM

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p111

BOILER FAILS TO SHUTDOWN OR MODULATE AS IT REACHES TEMPERATURE

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER UP TO TEMPERATURE

Next: !p124

OVERHEAT TRIPS DURING OPERATION

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER UP TO TEMPERATURE

Next: !p126

SOLID RED LOCKOUT REOCCURS AFTER APPROX 5 SECONDS

CHARACTERISTIC TEST FROM OBSERVATION WHEN DOES SOLID RED LOCKOUT REOCCUR

Next: p130

SOLID RED LOCKOUT REOCCURS AFTER APPROX 15 SECONDS

CHARACTERISTIC TEST FROM OBSERVATION WHEN DOES SOLID RED LOCKOUT REOCCUR

Next: p132

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p139

PRESSURE ON GAUGE DOES NOT INCREASE WHEN WATER ADDED TO SYSTEM

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p141

POWER LED DOES NOT ILLUMINATE

CHARACTERISTIC TEST FROM OBSERVATION BOILER STANDBY

Next: p157

RED FAULT LED ILLUMINATED (SOLID LOCKOUT)

CHARACTERISTIC TEST FROM OBSERVATION BOILER STANDBY

Next: p588

BOILER ATTEMPTS TO FIRE WITH NO DEMAND

CHARACTERISTIC TEST FROM OBSERVATION BOILER STANDBY

Next: p185

NO SPARKING, LOCKOUT LED FLASHING RED

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p240

NO SPARKING, LOCKOUT LED SOLID RED

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p836

SPARKING PRESENT BUT BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p244

BURNER IGNITES BUT DOES NOT ESTABLISH (SPARKING CONTINUES)

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p748

BURNER IGNITES BUT BAFFLES OUT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p636

DHW COOL, RADIATORS REMAIN COLD

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p399

DHW COOL, RADIATORS BEGIN TO HEAT

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p401

DHW TOO HOT

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p403

DHW RUNS HOT / COLD

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p405

SYSTEM PRESSURE READS CORRECTLY BUT DOES NOT INCREASE

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER UP TO TEMPERATURE

Next: !p408

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p410

SYSTEM PRESSURE READS CORRECTLY BUT DOES NOT INCREASE

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER UP TO TEMPERATURE

Next: !p438

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p440

BOILER AND RADIATOR TEMPERATURE LOW

CHARACTERISTIC TEST FROM OPERATION CH

Next: p523

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p525

BOILER REACHES TEMPERATURE RADIATORS DO NOT HEAT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p527

MAXIMUM PRESSURE OK BUT MINIMUM INCORRECT

CHARACTERISTIC TEST FROM PRESSURE BURNER MAX AND MIN

Next: !p62

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p616

PRESSURE ON GAUGE DOES NOT INCREASE WHEN WATER ADDED TO SYSTEM

CHARACTERISTIC TEST FROM PRESSURE SYSTEM

Next: !p618

MAXIMUM PRESSURE WRONG

CHARACTERISTIC TEST FROM PRESSURE BURNER MAX AND MIN

Next: p71

MAXIMUM PRESSURE OK BUT MINIMUM INCORRECT

CHARACTERISTIC TEST FROM PRESSURE BURNER MAX AND MIN

Next: !p725

MAXIMUM PRESSURE WRONG

CHARACTERISTIC TEST FROM PRESSURE BURNER MAX AND MIN

Next: p727

APS TUBE UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION APS TUBE AND VENTURI

Next: !p862

VENTURI UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION APS TUBE AND VENTURI

Next: !p864

APS TUBE UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION APS TUBE AND VENTURI

Next: !p886

VENTURI UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION APS TUBE AND VENTURI

Next: !p888

APS TUBE UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION APS TUBE AND VENTURI

Next: !p900

VENTURI UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION APS TUBE AND VENTURI

Next: !p902

FAN CYCLES ON AND OFF

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS

Next: p904

FAN DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS

Next: p907

VOLTAGE PRESENT ON BOTH WIRES

CHARACTERISTIC TEST FROM VOLTAGE EXTERNAL CONTROLS (UNDER BOILER)

Next: !p933

NO VOLTAGE ON EITHER WIRE

CHARACTERISTIC TEST FROM VOLTAGE EXTERNAL CONTROLS (UNDER BOILER)

Next: !p935

21/03/2019 10:22:56 1902_1_50_1 01/04/2019 14:07:18

01/04/2019 10:35:33

Next: End

TEMPERATURE DIFFERENTIAL CH

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

Next: !p117, f118

INSPECTION CONDENSING HEAT EXCHANGER WATERWAYS

DRAIN BOILER PRIMARY CIRCUIT

Next: !p119, !f120

OBSERVATION WHEN DOES SOLID RED LOCKOUT REOCCUR

ENSURE NO DEMANDS

Next: !p128, ?129, ?131

RESISTANCE FLUE SENSOR

DISCONNECT PLUG FROM FLUE SENSOR

Next: !p144, !f145

OBSERVATION COLD MAINS WATER SUPPLY

Next: p149, !f154

RESISTANCE MAINS FUSE

REMOVE THE FUSE FROM THE FUSED SPUR

Next: p170, f173

FUSE FURTHER INVESTIGATION

Next: !p174, !f175

FUSE FURTHER INVESTIGATION

Next: !p177, !f178

RESISTANCE OVERHEAT STAT AND HARNESS

DISCONNECT M10 FROM THE PCB

Next: p23, f20

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p197, f200

RESISTANCE OVERHEAT STAT

DISCONNECT LEADS FROM OVERHEAT STAT

Next: !p21, !f22

VOLTAGE DHW FLOW SENSOR (DEMAND)

Next: p210, f201

VOLTAGE DHW FLOW SWITCH (PERMANENT)

Next: p202, !f207

RESISTANCE CH THERMISTOR

DISCONNECT WIRES FROM CH THERMISTOR

Next: !p214, !f215

RESISTANCE DHW THERMISTOR

DISCONNECT PLUG FROM DHW THERMISTOR

Next: !p219, !f220

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p27, !f28

RESISTANCE OVERHEAT STAT

DISCONNECT LEADS FROM OVERHEAT STAT

Next: !p300, !f301

RESISTANCE PUMP AND HARNESS

DISCONNECT M4 FROM THE PCB

Next: p33, f43

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS VALVE INLET TEST POINT

Next: p327, !f326

RESISTANCE GAS VALVE MAIN SOLENOID

DISCONNECT LEAD FROM GAS VALVE MAIN SOLENOID

Next: !p330, !f331

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS VALVE INLET TEST POINT

Next: !p341, !f342

RESISTANCE FAN

DISCONNECT LEADS FROM FAN

Next: !p37, !f38

RESISTANCE SUMMER / WINTER SWITCH AND HARNESS

{GAINPCBACS}
SUMMER / WINTER SWITCH SET TO WINTER (PUSHED IN)
DISCONNECT M6 FROM THE PCB

Next: p375, f633

VOLTAGE INTERNAL TIMER (PERMANENT)

Next: p745, !f477

TEMPERATURE DIFFERENTIAL CH

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

Next: !p419, f420

INSPECTION CONDENSING HEAT EXCHANGER WATERWAYS

DRAIN BOILER PRIMARY CIRCUIT

Next: !p421, !f422

VOLTAGE DIVERTER VALVE DHW AT PCB

Next: p429, !f430

RESISTANCE HARNESS PUMP

DISCONNECT PLUG FROM THE PUMP

Next: !p44, !f45

TEMPERATURE DIFFERENTIAL CH

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

Next: !p445, f446

INSPECTION CONDENSING HEAT EXCHANGER WATERWAYS

DRAIN BOILER PRIMARY CIRCUIT

Next: !p447, !f448

RESISTANCE GAS VALVE MODUREG

DISCONNECT LEADS FROM GAS VALVE MODUREG

Next: !p47, !f48

RESISTANCE GAS VALVE MAIN SOLENOID

DISCONNECT LEAD FROM GAS VALVE MAIN SOLENOID

Next: !p50, !f51

INSPECTION DHW TEMPERATURE KNOB

Next: p515, !f516

VOLTAGE DIVERTER VALVE CH AT PCB

Next: p536, !f537

INSPECTION CH TEMPERATURE KNOB

Next: p574, !f582

RESISTANCE FLUE SENSOR

DISCONNECT PLUG FROM FLUE SENSOR

Next: !p611, !f612

PRESSURE SYSTEM

Next: p614, ?615, ?617

RESISTANCE SUMMER / WINTER SWITCH

SUMMER / WINTER SWITCH SET TO WINTER (PUSHED IN)

Next: !p634, !f635

RESISTANCE GAS VALVE MODUREG

DISCONNECT LEADS FROM GAS VALVE MODUREG

Next: !p67, !f68

VOLTAGE EXTERNAL CONTROLS (PERMANENT)

Next: p927, !f685

RESISTANCE DHW POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: !p113, !f112

OBSERVATION DISCONNECT FLOW SWITCH

DISCONNECT ELECTRICA

Next: !p701, f702

INSPECTION FLOW SWITCH ASSEMBLY

DHW CIRCUIT ISOLATED AND DRAINED
UNCLIP SENSOR AND REMOVE FLOW SWITCH ASSEMBLY

Next: !p703, !f704

RESISTANCE GAS VALVE MODUREG

DISCONNECT LEADS FROM GAS VALVE MODUREG

Next: !p732, !f733

RESISTANCE DHW POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: !p736, !f737

RESISTANCE DHW POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: p739, !f740

PRESSURE BURNER ON IGNITION

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: p766, f763

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS VALVE INLET TEST POINT

Next: !p764, !f765

VOLTAGE TO FAN AT FAN BOARD (NO SPARKING)

{GAINPCBACS}

Next: p839, f840

VOLTAGE PCB TO FAN BOARD - DC SUPPLY AT FAN BOARD

{GAINPCBACS}

Next: !p841, f842

VOLTAGE PCB TO FAN BOARD - DC SUPPLY AT PCB

{GAINPCBACS}

Next: !p843, !f844

VOLTAGE APS (PERMANENT)

{GAINPCBACS}

Next: p847, !f848

RESISTANCE HARNESS M3

DISCONNECT M3 FROM THE PCB

Next: !p873, !f874

RESISTANCE LOW WATER PRESSURE SWITCH

DISCONNECT LEAD FROM LOW WATER PRESSURE SWITCH

Next: !p878, !f879

VOLTAGE APS (FAN SPEED AT REST)

{GAINPCBACS}

Next: !p881, f882

INSPECTION APS TUBE AND VENTURI

Next: !p883, ?885, ?887

RESISTANCE LOW WATER PRESSURE SWITCH

DISCONNECT LEAD FROM LOW WATER PRESSURE SWITCH

Next: !p892, !f893

VOLTAGE APS (FAN SPEED AT REST)

{GAINPCBACS}

Next: !p896, f897

INSPECTION APS TUBE AND VENTURI

Next: !p898, ?899, ?901

VOLTAGE PCB TO FAN BOARD AT MAIN PCB

{GAINPCBACS}

Next: p910, f911

RESISTANCE CH THERMISTOR

DISCONNECT WIRES FROM CH THERMISTOR

Next: p912, !f913

TEMPERATURE DIFFERENTIAL CH

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

Next: p121, !f115

OBSERVATION RUN BOILER UP TO TEMPERATURE

ATTACH A TEMPERATURE CLAMP/PROBE TO THE FLOW PIPE (RIGHT HAND SIDE, JUST ABOVE THE OVERHEAT STAT)

Next: !p122, ?123, ?125

RESISTANCE FLUE SENSOR AND HARNESS

DISCONNECT M12 FROM THE PCB

Next: !p142, f143

PRESSURE SYSTEM

Next: p889, ?138, ?140

INSPECTION DHW ISOLATION VALVE

Next: p150, !f153

INSPECTION FLOW SWITCH ASSEMBLY

DHW CIRCUIT ISOLATED AND DRAINED
UNCLIP SENSOR AND REMOVE FLOW SWITCH ASSEMBLY

Next: !p151, !f587

VOLTAGE MAINS POWER IN

{GAINPCBACS}

Next: p158, f166

RESISTANCE FUSE F1

REMOVE PCB FUSE FROM ITS HOLDER

Next: p623, f176

RESISTANCE ON/OFF SWITCH

ON / OFF SWITCH SET TO ON (PUSHED IN)

Next: p171, !f172

RESISTANCE HARNESS MAINS POWER

Next: !p180, !f181

TEMPERATURE AMBIENT

Next: p187, !f186

OBSERVATION SET BOILER TO SUMMER

SET BOILER TO SUMMER MODE (BUTTON EXTENDED)
ENSURE NO DEMANDS

Next: p189, !f817

OBSERVATION ISOLATE DHW

TURN DHW ISOLATION VALVE OFF

Next: p687, !f191

RESISTANCE HARNESS PUMP

DISCONNECT PLUG FROM THE PUMP

Next: !p198, !f199

RESISTANCE HARNESS DHW FLOW SWITCH

DISCONNECT CONNECTOR FROM FLOW SWITCH

Next: p203, !f206

INSPECTION FLOW SWITCH ASSEMBLY

DHW CIRCUIT ISOLATED AND DRAINED
UNCLIP SENSOR AND REMOVE FLOW SWITCH ASSEMBLY

Next: !p204, !f205

RESISTANCE DHW THERMISTOR AND HARNESS

DISCONNECT M12 FROM THE PCB

Next: !p209, f218

RESISTANCE CH THERMISTOR AND HARNESS

DISCONNECT M12 FROM THE PCB

Next: p208, f213

OBSERVATION BOILER RESET (OVERHEAT / FLASHING RED LOCKOUT)

ENSURE APPLIANCE IS COOL

Next: p80, !f25

OBSERVATION PUMP RUNS

Next: p52, f26

RESISTANCE OVERHEAT STAT AND HARNESS

DISCONNECT M10 FROM THE PCB

Next: !p302, f299

PRESSURE BURNER ON IGNITION

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: p335, f325

PRESSURE BURNER ON IGNITION

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: p349, f340

RESISTANCE HARNESS PUMP

DISCONNECT PLUG FROM THE PUMP

Next: !p29, !f30

RESISTANCE GAS VALVE MAIN SOLENOID AND HARNESS

DISCONNECT M10 FROM THE PCB

Next: p328, f329

VOLTAGE GAS VALVE AT PCB

Next: !p333, !f332

RESISTANCE FAN AND HARNESS

DISCONNECT CONNECTOR M4 FROM THE MAIN PCB

Next: p35, f36

INSPECTION SPARK ELECTRODE

REMOVE SPARK ELECTRODE FROM BURNER (CENTRAL ELECTRODE)

Next: p336, !f339

INSPECTION INJECTOR

REMOVE INJECTOR BURNER RAIL

Next: !p777, !f778

RESISTANCE RECTIFICATION LEAD

DISCONNECT LEAD FROM RECTIFICATION ELECTRODE
AND FROM "FLAME" ON THE PCB

Next: p351, !f350

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT M14 FROM THE PCB

Next: p39, f46

INSPECTION RECTIFICATION ELECTRODE

REMOVE RECTIFICATION ELECTRODE FROM BURNER (LEFT ELECTRODE)

Next: !p772, !f352

VOLTAGE INTERNAL TIMER (DEMAND)

Next: p376, f392

VOLTAGE EXTERNAL CONTROLS (DEMAND)

Next: p818, f684

RESISTANCE GAS VALVE MAIN SOLENOID AND HARNESS

DISCONNECT M10 FROM THE PCB

Next: !p41, f49

INSPECTION DHW TEMPERATURE KNOB

Next: p433, !f434

OBSERVATION DIVERTER VALVE MOVEMENT (DHW)

UNCLIP DIVERTER MOTO

Next: !p427, f428

INSPECTION DHW TEMPERATURE KNOB

Next: p509, !f424

PRESSURE SYSTEM

Next: p406, ?407, ?409

PUMP LIMPET

Next: p411, !f412

RESISTANCE DHW THERMISTOR

DISCONNECT PLUG FROM DHW THERMISTOR

Next: p413, !f414

RESISTANCE CH THERMISTOR

DISCONNECT WIRES FROM CH THERMISTOR

Next: p415, !f507

TEMPERATURE DIFFERENTIAL DHW

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

Next: !p417, f418

RESISTANCE DHW THERMISTOR

DISCONNECT PLUG FROM DHW THERMISTOR

Next: !p425, !f426

RESISTANCE HARNESS DIVERTER VALVE

DISCONNECT PLUG FROM DIVERTER VALVE

Next: !p431, !f432

PRESSURE SYSTEM

Next: p435, ?437, ?439

PUMP LIMPET

Next: p441, !f442

TEMPERATURE DIFFERENTIAL DHW

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

Next: p443, f444

PRESSURE BURNER MAXIMUM

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: !p449, f738

RESISTANCE DHW POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: p423, !f513

RESISTANCE DHW POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: p517, !f518

RESISTANCE DHW THERMISTOR

DISCONNECT PLUG FROM DHW THERMISTOR

Next: !p519, !f520

PUMP LIMPET

Next: p54, !f53

INSPECTION CH TEMPERATURE KNOB

Next: p550, !f547

PRESSURE EXPANSION VESSEL

DRAIN BOILERS PRIMARY CIRCUIT

Next: !p544, !f545

INSPECTION SYSTEM VENTED

Next: p555, !f529

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p530, !f531

PUMP LIMPET

Next: p532, !f533

OBSERVATION DIVERTER VALVE MOVEMENT (CH)

UNCLIP DIVERTER MOTO

Next: p534, f535

INSPECTION DIVERTER VALVE SPINDLE

REMOVE DIVERTER VALV

Next: !p540, !f541

RESISTANCE HARNESS DIVERTER VALVE

DISCONNECT PLUG FROM DIVERTER VALVE

Next: !p538, !f539

RESISTANCE DHW THERMISTOR

DISCONNECT PLUG FROM DHW THERMISTOR

Next: p55, !f58

RESISTANCE CH THERMISTOR

DISCONNECT WIRES FROM CH THERMISTOR

Next: p821, !f549

RESISTANCE CH THERMISTOR

DISCONNECT WIRES FROM CH THERMISTOR

Next: p59, !f57

RESISTANCE CH POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: p546, !f554

INSPECTION EXTERNAL BYPASS

Next: p528, !f571

RESISTANCE CH POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: p576, !f580

RESISTANCE CH THERMISTOR

DISCONNECT WIRES FROM CH THERMISTOR

Next: !p578, !f581

OBSERVATION WHEN DOES SOLID RED LOCKOUT REOCCUR (SELF CHECK)

ENSURE NO DEMANDS

Next: p608, f613

PRESSURE BURNER MAX AND MIN

ATTACH U-GAUGE TO GAS VALVE BURNER PRESSURE TEST POINT

Next: p60, ?61, ?63

TEMPERATURE DIFFERENTIAL DHW

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

Next: p114, f116

RESISTANCE FLUE SENSOR AND HARNESS

DISCONNECT M12 FROM THE PCB

Next: !p609, f610

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

{GAINPCBACS}
DISCONNECT M12 FROM THE PCB

Next: p619, f877

OBSERVATION DISCONNECT M3

DISCONNECT CONNECTOR MARKED M3 AT THE PCB AND MAKE SAFE

Next: !p621, f880

OBSERVATION DOES BOILER RESPOND TO DEMAND

Next: p810, !f627

INFORMATION FAULTY LED

Next: !p159, !f632

INSPECTION COMBUSTION CHAMBER SEAL

Next: p637, !f638

INSPECTION CONDENSATE

Next: p671, !f640

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT M14 FROM THE PCB

Next: p65, f66

VOLTAGE GAS VALVE MODUREG

Next: !p69, f70

INSPECTION FAN

DISCONNECT LEADS FROM FAN
REMOVE TWO SCREWS HOLDING FAN, SLIDE FAN OUT

Next: p672, !f673

INSPECTION HEAT EXCHANGER FLUEWAYS

DISCONNECT LEADS FROM FAN
REMOVE TWO SCREWS HOLDING FAN, SLIDE FAN OUT

Next: p674, !f675

INSPECTION CONDENSING HEAT EXCHANGER FLUEWAYS

DISCONNECT LEADS FROM FAN
REMOVE TWO SCREWS HOLDING FAN, SLIDE FAN OUT

Next: p676, !f677

INSPECTION INJECTOR

REMOVE INJECTOR BURNER RAIL

Next: p678, !f776

INSPECTION BURNER

REMOVE INJECTOR BURNER RAIL
DISCONNECT SPARK AND RECTIFICATION LEADS AT ELECTRODES

Next: !p680, !f775

OBSERVATION DISCONNECT M6

{GAINPCBACS}
DISCONNECT CONNECTOR M6 FROM THE PCB

Next: p824, f700

PRESSURE GAS INLET (OPERATION)

ATTACH U-GAUGE TO GAS VALVE INLET TEST POINT

Next: p64, !f179

PRESSURE GAS INLET (OPERATION)

ATTACH U-GAUGE TO GAS VALVE INLET TEST POINT

Next: p728, !f729

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT M14 FROM THE PCB

Next: p730, f731

VOLTAGE GAS VALVE MODUREG

Next: !p734, f735

RESISTANCE DHW THERMISTOR

DISCONNECT PLUG FROM DHW THERMISTOR

Next: p741, !f742

RESISTANCE CH THERMISTOR

DISCONNECT WIRES FROM CH THERMISTOR

Next: !p743, !f744

RESISTANCE HARNESS TIMER

DISCONNECT WIRES FROM CONNECTIONS
MARKED 3 AND 5 ON THE INTERNAL TIMER

Next: !p746, !f747

OBSERVATION DOES BURNER FULLY CROSSLIGHT

Next: p246, f762

INSPECTION INJECTOR

REMOVE INJECTOR BURNER RAIL

Next: !p767, !f773

PRESSURE SYSTEM

Next: p24, ?108, ?110

DIODE TEST POWER LED

SET MULTIMETER TO DI

Next: p628, !f816

RESISTANCE LINK M5

Next: !p819, !f820

ADJUSTMENT POTENTIOMETER P1

ATTACH U-GAUGE TO BURNER PRESSURE TEST POINT

Next: !p822, !f823

INSPECTION JP1

Next: !p825, !f826

VOLTAGE FAN PCB TO PCB - IGNITION SIGNAL AT FAN PCB

Next: p837, f838

OBSERVATION SPARKING AT PCB

DISCONNECT LEAD FROM SPARK GENERATOR AND POSITION ABOVE THE GENERATOR AS SHOWN

Next: p871, f872

VOLTAGE APS (FAN SPEED AT REST)

{GAINPCBACS}

Next: p845, f846

OBSERVATION SPARKING WITH KIT

GAIN ACCESS INNER CO

Next: p851, !f852

RESISTANCE HARNESS APS

DISCONNECT PLUG FROM AIR PRESSURE SENSOR

Next: !p849, !f850

INSPECTION COMBUSTION CHAMBER SEAL

Next: p853, !f854

INSPECTION CONDENSATE

Next: p855, !f856

INSPECTION FLUE

Next: p857, !f858

INSPECTION APS TUBE AND VENTURI

Next: p859, ?861, ?863

INSPECTION FAN

DISCONNECT LEADS FROM FAN
REMOVE TWO SCREWS HOLDING FAN, SLIDE FAN OUT

Next: p865, !f866

INSPECTION HEAT EXCHANGER FLUEWAYS

DISCONNECT LEADS FROM FAN
REMOVE TWO SCREWS HOLDING FAN, SLIDE FAN OUT

Next: p867, !f868

INSPECTION CONDENSING HEAT EXCHANGER FLUEWAYS

DISCONNECT LEADS FROM FAN
REMOVE TWO SCREWS HOLDING FAN, SLIDE FAN OUT

Next: !p869, !f870

RESISTANCE SPARK ELECTRODE LEAD

DISCONNECT LEAD FROM SPARK ELECTRODE
AND FROM SPARK GENERATOR ON THE PCB

Next: !p875, !f876

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

{GAINPCBACS}
DISCONNECT M12 FROM THE PCB

Next: p890, f891

OBSERVATION DISCONNECT M3

DISCONNECT CONNECTOR MARKED M3 AT THE PCB AND MAKE SAFE

Next: !p894, f895

VOLTAGE PCB TO FAN BOARD AT MAIN PCB (CYCLING)

{GAINPCBACS}

Next: p924, !f923

VOLTAGE TO FAN AT FAN BOARD

Next: p908, f909

VOLTAGE FAN AT FAN

GAIN ACCESS TO FAN

Next: !p920, !f921

VOLTAGE PCB TO FAN BOARD AT FAN BOARD

Next: !p918, !f919

RESISTANCE DHW THERMISTOR

DISCONNECT PLUG FROM DHW THERMISTOR

Next: p914, !f915

RESISTANCE DHW POTENTIOMETER

DISCONNECT M11 FROM PCB

Next: !p916, !f917

VOLTAGE PCB TO FAN BOARD - DC SUPPLY AT FAN BOARD (CYCLING)

{GAINPCBACS}

Next: !p925, !f926

VOLTAGE EXTERNAL CONTROLS (UNDER BOILER)

Next: !p928, ?932, ?934

System Information

  • Total Tests: 477
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control