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:

FERROLI MODENA / T-ONE

GLOBALLY REPLACED

Next: &1, *

NO FAULT FOUND

Next: nff

FERROLI MODENA / T-ONE

Next: &2632, !f46

OBSERVATION APPLIANCE SELF CHECK

ENSURE NO DEMANDS
ECO MODE ON (ECO ON THE DISPLAY)

Next: &2630, ?2550, ?2556, ?2581, ?2651, ?2658

OBSERVATION FAN RUNS

Next: &7, f3418

OBSERVATION BURNER IGNITION AND ESTABLISH

Next: &2693, ?66, ?68, ?70, ?3263

OPERATION DHW

Next: &2695, ?72, ?2900, ?3313, ?3315

OPERATION CH

Next: &10, ?83, ?85, ?2697, ?2884

OBSERVATION FAN AND PUMP OVERRUN

Next: &nff, !f2452

OBSERVATION CH DEMAND RECOGNISED

Next: &3307, f311

FAN INVESTIGATION F15,A05

INTENTIONALLY BLANK HEADER FOR F15 AND A05

Next: &nff, f471

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &2054, !f718

RETURN THERMISTOR INVESTIGATION F11

INTENTIONALLY BLANK HEADER FOR F11

Next: &nff, f725

FLOW / STAT THERMISTOR INVESTIGATION F10, F14 AND F52

OK TO BE BLANK

Next: &nff, f732

EXHAUST TEMP SENSOR INVESTIGATION F13

OK TO BE BLANK

Next: &nff, f775

POWER SUPPLY VOLTAGE F34

INTENTIONALLY BLANK HEADER FOR F34

Next: &nff, f785

POWER SUPPLY FREQUENCY F35

INTENTIONALLY BLANK HEADER FOR F35

Next: &nff, !f2053

FLAME DETECTED AFTER BURNER SHUTDOWN A02

INTENTIONALLY BLANK HEADER FOR A02 FAULT CODE

Next: &nff, f3231

GAS VALVE A62

INTENTIONALLY BLANK HEADER FOR A62 FAULT CODE

Next: &nff, f809

BURNER SHUTDOWN A06

INTENTIONALLY BLANK HEADER FOR A06

Next: &nff, f1729

FUSE INVESTIGATION

INTENTIONALLY BLANK HEADER FOR FUSE INVESTIGATION

Next: &nff, f850

OVERHEAT INVESTIGATION - A03

OK TO BE BLANK

Next: &nff, f3100

FLUE OVERHEAT INVESTIGATION - F07

Next: &nff, f3125

DHW FLOW RATE

Next: &3410, f2055

F43 INVESTIGATION

OK TO BE BLANK

Next: &nff, f3143

HOW TO CANCEL PURGE CYCLE

Next: &717, !f2631

OBSERVATION DISPLAY OPERATION

Next: &3537, ?2633, ?2649

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: &8, !f2694

OBSERVATION DHW PREHEAT OPERATION

ENSURE APPLIANCE IS

Next: &82, !f2696

DHW SENSOR INVESTIGATION F12

OK TO BE BLANK

Next: &nff, f2810

PCB FAULT - A61, A63, A65, F64, F66

OK TO BE BLANK

Next: &nff, f2966

HOW TO ACCESS THE BOILER CONFIGURATION PARAMETERS

Next: &nff, !f2970

INCORRECT SYSTEM WATER PRESSURE - F37

OK TO BE BLANK

Next: &nff, f2972

OBSERVATION PUMP RUNS CH DEMAND

Next: &9, f3308

HOW TO ACCESS THE TRANSPARENT PARAMETER MENU

Next: &nff, !f3318

HOW TO ACTIVATE TEST MODE

Next: &nff, !f3320

WATER PRESSURE SENSOR FAULT - F47

OK TO BE BLANK

Next: &nff, f3322

FLOW SENSOR DISCONNECTED A41

OK TO BE BLANK

Next: &nff, f3372

OBSERVATION DHW DEMAND RECOGNISED

ECO MODE ON (ECO ON DISPLAY)
TURN HOT WATER TAP ON WITH A FLOW RATE OF 2 L/MIN

Next: &6, f3411

USER DISPLAY GUIDE

Next: &3539, !f3538

PARAMETER INFORMATION - NEW PCB FITTED

Next: &2, !f3540

DHW TEMP SENSOR NOT CONNECTED A44

OK TO BE BLANK

Next: &nff, f3760

HIGH LIMIT PROTECTION IN CH F50

OK TO BE BLANK

Next: &nff, f3766

REGISTERING FREQUENCY FAULT CODE

PCB

Next: End

DHW ISOLATION VALVE

PACK - ISOLATION VALVES (COLD WATER)

Next: End

INSUFFICIENT

WATER SUPPLY

Next: End

INCORRECT OVERRUNS MAIN MODEL

PCB

Next: End

BLANK FOR FAULT CODES 2

Z DIRECTION CHOICE OR CONTINUE

Next: End

INCORRECTLY SENSING DHW DEMAND

PCB

Next: End

FROST PROTECTION

Next: End

CANCELLING AIR PURGE INFO

Z DIRECTION CHOICE OR CONTINUE

Next: End

BLOWN THROUGH FATIGUE

FUSE MAINS

Next: End

BLANK FOR FUSE FH1

Z DIRECTION CHOICE OR CONTINUE

Next: End

NO DISPLAY

PCB

Next: End

SHORTED

HARNESS X2 / X3

Next: End

NO POWER TO PUMP

PCB

Next: End

PUMP DOES NOT RUN

HARNESS X2 / X3

Next: End

PUMP RUNS CONTINUOUSLY

SENSOR - DHW

Next: End

UNSATISFACTORY

GAS INLET PRESSURE

Next: End

PREHEAT OPERATING INCORRECTLY

PCB

Next: End

FLAT

EXPANSION VESSEL - 7 LITRE

Next: End

ONLY PARTIALLY OPENING GAS VALVE

PIPE - INTERNAL - CONDENSATE

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

AIR GAS MIXER RESTRICTED

FAN AND BURNER ASSEMBLY

Next: End

DOES NOT IGNITE

ELECTRODE C/W LEAD

Next: End

DOES NOT IGNITE

SILENCER - AIR

Next: End

GAS VALVE DAMAGED PCB

PCB AND GAS VALVE

Next: End

GAS VALVE SECTION

HARNESS X2 / X3

Next: End

NO PRESSURE DROP

FLUE

Next: End

LOW CAUSING BAFFLING

GAS INLET PRESSURE

Next: End

BLOCKED CAUSING BAFFLING

PIPE - INTERNAL - CONDENSATE

Next: End

BAFFLING

SILENCER - AIR

Next: End

CAUSING BAFFLING - SEALS OR BLOCKED

FLUE

Next: End

DOES NOT ESTABLISH

PIPE - INTERNAL - CONDENSATE

Next: End

LOW CAUSING NO RECTIFICATION

GAS INLET PRESSURE

Next: End

DOES NOT ESTABLISH

SILENCER - AIR

Next: End

DOES NOT ESTABLISH

FLUE

Next: End

DOES NOT ESTABLISH

FAN AND BURNER ASSEMBLY

Next: End

HW TOO HOT

SENSOR - DHW

Next: End

F12 FAULT CODE

SENSOR - DHW

Next: End

A06 FAULT CODE

PIPE - INTERNAL - CONDENSATE

Next: End

A06 FAULT CODE

GAS INLET PRESSURE

Next: End

A06 FAULT CODE

SILENCER - AIR

Next: End

A06 FAULT CODE

FLUE

Next: End

UP TO TEMP RADS COLD

PACK - ISOLATION VALVES (FLOW AND RETURN)

Next: End

UP TO TEMP RADS COLD

PUMP ASSEMBLY

Next: End

RADS FAIL TO REACH SET TEMP

THERMOSTAT - COMBINED

Next: End

HEAT EXCHANGER KETTLES

PUMP ASSEMBLY

Next: End

HEAT EXCHANGER KETTLES

VALVE - BYPASS

Next: End

DHW COOL RADS COOL

EXTERNAL MIXING

Next: End

DHW COOL RADS COOL

SENSOR - DHW

Next: End

PCB FAULT CODES

PCB

Next: End

PARAMETERS

Z DIRECTION CHOICE OR CONTINUE

Next: End

F37

SYSTEM PRESSURE

Next: End

FAULT CODE F47

PRESSURE GAUGE

Next: End

FAULT CODE F37

PARAMETER WATER PRESSURE PROTECTION - B03

Next: End

NO PRESSURE DROP

SILENCER - AIR

Next: End

DOES NOT IGNITE

INJECTOR

Next: End

NOT LIGHTING

ELECTRODE C/W LEAD

Next: End

BURNER DOES NOT IGNITE

INJECTOR

Next: End

BAFFLING

FAN AND BURNER ASSEMBLY

Next: End

BAFFLES OR NOISY

INJECTOR

Next: End

DOES NOT ESTABLISH

ELECTRODE C/W LEAD

Next: End

DOES NOT ESTABLISH

INJECTOR

Next: End

A06 ERROR CODE

FAN AND BURNER ASSEMBLY

Next: End

FAULT CODE A06

INJECTOR

Next: End

SHORTING

PUMP ASSEMBLY

Next: End

APPLIANCE TO TEMP RADS COOL OR DO NOT HEAT

SYSTEM PRESSURE

Next: End

NOT FITTED CORRECTLY

SENSOR FITMENT

Next: End

OVERHEAT

SENSOR C/W BRACKET 10K NTC

Next: End

OVERHEAT

THERMOSTAT - COMBINED

Next: End

BLOCKED NOT SHOWING PRESSURE

PRESSURE GAUGE

Next: End

FULLY OR PARTIALLY CLOSED - OVERHEAT

PACK - ISOLATION VALVES (FLOW AND RETURN)

Next: End

NOT FITTED CORRECTLY F42

SENSOR FITMENT

Next: End

OVERHEAT F42

SENSOR C/W BRACKET 10K NTC

Next: End

FULLY OR PARTIALLY CLOSED - OVERHEAT F42

PACK - ISOLATION VALVES (FLOW AND RETURN)

Next: End

BLOCKED NOT SHOWING PRESSURE F42

PRESSURE GAUGE

Next: End

PASSING CAUSING A02

GAS VALVE

Next: End

A02 FAULT CODE

GAS VALVE

Next: End

A02 FAULT CODE

ELECTRODE C/W LEAD

Next: End

BLOCKED NOT SHOWING PRESSURE FLUE OVERHEAT

PRESSURE GAUGE

Next: End

NOT FITTED CORRECTLY FLUE OVERHEAT

SENSOR FITMENT

Next: End

FLUE OVERHEAT

SENSOR - HEAT EXCHANGER

Next: End

OVERHEAT FLUE OVERHEAT

SENSOR C/W BRACKET 10K NTC

Next: End

CAUSING OVERHEAT FLUE OVERHEAT

PUMP ASSEMBLY

Next: End

FLUE OVERHEAT

FLUE

Next: End

DAMAGED FLUEWAYS CAUSING FLUE OVERHEAT

HEAT EXCHANGER FLUEWAYS

Next: End

EXPLOSIVE IGNITION

PARAMETER IGNITION LEVEL - P01

Next: End

EXPLOSIVE IGNITION

PCB

Next: End

EXPLOSIVE IGNITION

SILENCER - AIR

Next: End

EXPLOSIVE IGNITION

FAN AND BURNER ASSEMBLY

Next: End

EXPLOSIVE IGNITION 1

ELECTRODE C/W LEAD

Next: End

EXPLOSIVE IGNITION

INJECTOR

Next: End

EXPLOSIVE IGNITION

GAS INLET PRESSURE

Next: End

RADS FAIL TO REACH SET TEMP

SENSOR C/W BRACKET 10K NTC

Next: End

APPLIANCE AND RADS FAIL TO REACH SET TEMP

PARAMETER CH MAX OUTPUT - P13

Next: End

DHW COOL RADS COOL

GAS INLET PRESSURE

Next: End

POOR HW TEMP

PARAMETER DHW MAX OUTPUT - P20

Next: End

NO POWER TO PUMP CH DEMAND

PCB

Next: End

PUMP DOES NOT RUN CH DEMAND

HARNESS X2 / X3

Next: End

TRANSPARENT PARAMETERS

Z DIRECTION CHOICE OR CONTINUE

Next: End

HOW TO ACTIVATE TEST MODE

Z DIRECTION CHOICE OR CONTINUE

Next: End

FAULT CODE F47

PARAMETER WATER PRESSURE PROTECTION - B03

Next: End

AC SECTION SHORTING

FAN AND BURNER ASSEMBLY

Next: End

A41 FAULT CODE

SENSOR FITMENT

Next: End

FLUE THERMISTOR FAULT CODE

HARNESS X2 / X3

Next: End

TURBINE

HARNESS X2 / X3

Next: End

FAN DOES NOT RUN

SENSOR - DHW

Next: End

FAN DOES NOT RUN

THERMOSTAT - COMBINED

Next: End

FAN AC SECTION

HARNESS X2 / X3

Next: End

FAN DC SECTION

HARNESS X2 / X3

Next: End

FAN FAULT CODE

PCB

Next: End

FAN ERROR CODE

FAN PCB

Next: End

FAN RUNNING CONTINUOUSLY

PCB

Next: End

FAN RUNNING CONTINUOUSLY

FAN PCB

Next: End

FAN RUNS CONTINUOUSLY

HARNESS X2 / X3

Next: End

FAULT CODE

SENSOR C/W BRACKET 10K NTC

Next: End

RESISTANCE INCORRECT

GAS VALVE

Next: End

CH NOT RECOGNISED

HARNESS X4

Next: End

NO POWER TO TIMER

PCB

Next: End

CH NOT RECOGNISED

HARNESS X1

Next: End

NOT SWITCHING

INTEGRAL TIMER

Next: End

NO POWER TO PUMP F43

PCB

Next: End

PUMP DOES NOT RUN F43

HARNESS X2 / X3

Next: End

NO POWER TO PUMP A03

PCB

Next: End

PUMP DOES NOT RUN A03

HARNESS X2 / X3

Next: End

FAN DOES NOT RUN

SENSOR C/W BRACKET 10K NTC

Next: End

USER DISPLAY GUIDE

Z DIRECTION CHOICE OR CONTINUE

Next: End

PARAMETER INFO

Z DIRECTION CHOICE OR CONTINUE

Next: End

DHW COOL RADS COOL

INJECTOR

Next: End

POOR HW OUTPUT

FAN AND BURNER ASSEMBLY

Next: End

OVERHEAT FLUE OVERHEAT

THERMOSTAT - COMBINED

Next: End

NO POWER TO PUMP F07

PCB

Next: End

PUMP DOES NOT RUN F07

HARNESS X2 / X3

Next: End

DHW COOL RADS COOL

FLUE

Next: End

POOR HW OUTPUT

SILENCER - AIR

Next: End

CORRECTLY ACTIVATED APPLIANCE COLD

FROST PROTECTION

Next: End

APPLIANCE FAILS TO REACH SET TEMP

SYSTEM PRESSURE

Next: End

RADS FAIL TO REACH SET TEMP

AIR IN APPLIANCE / SYSTEM

Next: End

A03 FAULT CODE

SYSTEM PRESSURE

Next: End

A03 OVERHEAT

AIR IN APPLIANCE / SYSTEM

Next: End

F07 FAULT CODE

SYSTEM PRESSURE

Next: End

F07 OVERHEAT

AIR IN APPLIANCE / SYSTEM

Next: End

F43 FAULT CODE

SYSTEM PRESSURE

Next: End

F43 OVERHEAT

AIR IN APPLIANCE / SYSTEM

Next: End

UP TO TEMP RADS COLD

AIR IN APPLIANCE / SYSTEM

Next: End

APPLIANCE RACHES TEMP RADS COOL

PRESSURE GAUGE

Next: End

HEAT EXCHANGER KETTLES

AIR IN APPLIANCE / SYSTEM

Next: End

CH KETTLING

SYSTEM PRESSURE

Next: End

CH KETTLING

PRESSURE GAUGE

Next: End

DHW KETTLING

SYSTEM PRESSURE

Next: End

DHW KETTLING

PRESSURE GAUGE

Next: End

FIRING WITH NO DEMAND

SENSOR - DHW

Next: End

FIRING WITH NO DEMAND

THERMOSTAT - COMBINED

Next: End

FLOW THERMISTOR FAULT CODE F42

HARNESS X2 / X3

Next: End

FLOW THERMISTOR FAULT CODE

HARNESS X2 / X3

Next: End

FAULT CODE A41

HARNESS X2 / X3

Next: End

FAN DOES NOT RUN

EXTERNAL PROBE LINK

Next: End

FAN DOES NOT RUN

SENSOR - HEAT EXCHANGER

Next: End

FAN AC SECTION SHORTING

HARNESS X2 / X3

Next: End

SHORTED

INTEGRAL TIMER

Next: End

TURBINE HARNESS SHORTED

HARNESS X2 / X3

Next: End

UP TO TEMP RADS COLD

VALVE - BYPASS

Next: End

A03 OVERHEAT INVESTIGATION

VALVE - BYPASS

Next: End

CAUSING OVERHEAT

PUMP ASSEMBLY

Next: End

F42 INVESTIGATION

VALVE - BYPASS

Next: End

CAUSING OVERHEAT F42

PUMP ASSEMBLY

Next: End

A44 DHW SENSOR

SENSOR FITMENT

Next: End

A44

SENSOR - DHW

Next: End

POOR HW

SENSOR FITMENT

Next: End

APPLIANCE FAIL TO REACH SET TEMP

PRESSURE GAUGE

Next: End

F50

PARAMETER VARIABLE INPUT SWITCH

Next: End

A03 FAULT CODE

SENSOR - DHW

Next: End

FAN NOT RUNNING

EXTERNAL PROBE LINK

Next: End

BLANK FOR CASE OFF

Z DIRECTION CHOICE OR CONTINUE

Next: End

NO DEMAND VOLTAGE TO FAN

PCB

Next: End

FAN DC SECTION 2

HARNESS X2 / X3

Next: End

NO PEMANENT DC VOLTAGE TO FAN

PCB

Next: End

BLANK FOR TYPE OF DIAGNOSTIC PROCEDURE

Z DIRECTION CHOICE OR CONTINUE

Next: End

POLARITY PROBLEM

Next: End

STATING A06 INCORRECTLY

PCB

Next: End

POOR DHW FLOW

FILTER - FLOW METER - DHW

Next: End

POOR DHW FLOW

RESTRICTOR - FLOW

Next: End

RESTRICTED BLOCKED OR JAMMED

FLOW METER

Next: End

BLANK FOR FAULT CODES

Z DIRECTION CHOICE OR CONTINUE

Next: End

OPEN OR PASSING ALLOWING FLOW

HOT WATER OUTLETS

Next: End

REGISTERING DEMAND WHEN NONE PRESENT

FLOW METER

Next: End

NO MAINS POWER

Next: End

BLANK FOR MAINS FUSE INVESTIGATION

Z DIRECTION CHOICE OR CONTINUE

Next: End

BLOWN THROUGH FATIGUE

FUSE F1

Next: End

SHORTED

FAN AND BURNER ASSEMBLY

Next: End

DISPLAY JUMBLED

PCB

Next: End

NOT RUNNING

PUMP ASSEMBLY

Next: End

PUMP RUNNING CONTINUOUSLY

PCB

Next: End

EXPANSION VESSEL PIPE

PIPE - BYPASS / EXPANSION VESSEL

Next: End

DROPPING AWAY COMPLETELY

GAS INLET PRESSURE

Next: End

INCORRECT SPARK GAP

ELECTRODE C/W LEAD

Next: End

CAUSING NO IGNITION

FAN AND BURNER ASSEMBLY

Next: End

DOES NOT IGNITE

PCB

Next: End

NO POWER TO GAS VALVE

PCB

Next: End

HARNESS GONE DAMAGED PCB

PCB AND HARNESS X4

Next: End

NOT OPENING

GAS VALVE

Next: End

NO PRESSURE DROP

HEAT EXCHANGER FLUEWAYS

Next: End

NO PRESSURE DROP

FAN AND BURNER ASSEMBLY

Next: End

NO PRESSURE DROP 1

FAN AND BURNER ASSEMBLY

Next: End

DOES NOT ESTABLISH

PCB

Next: End

DOES NOT ESTABLISH

HEAT EXCHANGER FLUEWAYS

Next: End

DOES NOT ESTABLISH 1

ELECTRODE C/W LEAD

Next: End

DOES NOT ESTABLISH 1

FAN AND BURNER ASSEMBLY

Next: End

NOT CONTROLLING DHW TEMPERATURE

PCB

Next: End

F12 FAULT CODE

PCB

Next: End

F12 FAULT CODE

HARNESS X2 / X3

Next: End

POOR FLOW RATE

HEAT EXCHANGER (FLOW RATE)

Next: End

HEAT EXCHANGER KETTLES (CH)

HEAT EXCHANGER WATERWAYS

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER WATERWAYS

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER FLUEWAYS

Next: End

DHW COOL RADS COOL

FAN AND BURNER ASSEMBLY

Next: End

DOES NOT IGNITE

HEAT EXCHANGER FLUEWAYS

Next: End

WRONG MIX NOT IGNITING

GAS VALVE

Next: End

WRONG MIX BAFFLING

GAS VALVE

Next: End

BAFFLING

HEAT EXCHANGER FLUEWAYS

Next: End

DAMAGED CAUSING BAFFLING

FAN AND BURNER ASSEMBLY

Next: End

A02 FAULT

GAS VALVE

Next: End

A06 FAULT CODE

HEAT EXCHANGER FLUEWAYS

Next: End

A06 FAULT CODE

FAN AND BURNER ASSEMBLY

Next: End

RETEST APPLIANCE OPERATION - PCB FAULT

FAULT CODE RESET

Next: End

FAULT CODE F37

PCB

Next: End

FAULT CODE F37

HARNESS X4

Next: End

FAULT CODE F37

PRESSURE SWITCH - LOW WATER

Next: End

F37

PRESSURE SWITCH - LOW WATER

Next: End

FAULT CODE F37

PUMP MANIFOLD

Next: End

PUMP SECTION SHORTING

HARNESS X2 / X3

Next: End

NO DEMAND TO BOILER

Next: End

NOT RECOGNISING CH DEMAND

PCB

Next: End

A02 SENSING FLAME WHEN NOT PRESENT

PCB

Next: End

OVERHEAT 2

OVERHEAT - PCB

Next: End

EXPLOSIVE IGNITION

GAS VALVE

Next: End

EXPLOSIVE IGNITION

ELECTRODE C/W LEAD

Next: End

EXPLOSIVE IGNITION 1

FAN AND BURNER ASSEMBLY

Next: End

RADS FAIL TO REACH SET TEMP

PCB

Next: End

PUMP DOES NOT RUN CH DEMAND

PUMP ASSEMBLY

Next: End

DHW COOL PUMP RUNS RADS HEAT

PCB

Next: End

FAULT CODE F47

PCB

Next: End

FAN STUCK

FAN AND BURNER ASSEMBLY

Next: End

RESISTANCES INCORRECT

FAN AND BURNER ASSEMBLY

Next: End

FAN FAULT CODE

FAN ELECTRICAL CONNECTIONS

Next: End

FAULT CODE A41

PCB

Next: End

FAULT CODE

SENSOR - HEAT EXCHANGER

Next: End

NOT RECOGNISING DHW DEMAND

PCB

Next: End

NOT RECOGNISING DEMAND

FLOW METER

Next: End

FAN FAULT CODE

FAN PCB

Next: End

FAN RUNNING CONTINOUS

PCB

Next: End

RETURN THERMISTOR FAULT CODE

HARNESS X4

Next: End

GAS VALVE SECTION A62 FAULT CODE

HARNESS X4

Next: End

NO DEMAND TO BOILER 2

Next: End

NOT RECOGNISING CH DEMAND 2

PCB

Next: End

CH DEMAND NOT RECOGNISED

HARNESS X4

Next: End

NOT RUNNING F43

PUMP ASSEMBLY

Next: End

NOT RUNNING A03

PUMP ASSEMBLY

Next: End

NOT RUNNING F07

PUMP ASSEMBLY

Next: End

NOISY OPERATION DHW

HEAT EXCHANGER WATERWAYS

Next: End

FIRING HEATING INCORRECTLY

PCB

Next: End

SHORTED

FLOW METER

Next: End

FAULT CODE F42

THERMOSTAT - COMBINED

Next: End

FAULT CODE

THERMOSTAT - COMBINED

Next: End

FAULT CODE A41

THERMOSTAT - COMBINED

Next: End

FAN DOES NOT RUN 2

PCB

Next: End

A06 FAULT CODE

ELECTRODE C/W LEAD

Next: End

PCB TAKING OUT FUSES

PCB - FUSE

Next: End

SHORTED

HARNESS X1

Next: End

NO POWER TO TURBINE

PCB

Next: End

BOILER REACHES TEMP RADS DO NOT

SYSTEM BLOCKAGE

Next: End

OVERHEAT F42

OVERHEAT - PCB

Next: End

A44

PCB

Next: End

F50

PCB

Next: End

A03

OVERHEAT - PCB

Next: End

FAN NOT RUNNING

HARNESS X4

Next: End

NOT REGISTERING HALL SENSOR SIGNAL FROM FAN

PCB

Next: End

INCORRECTLY SHOWING RETURN THERMISTOR FAULT

PCB

Next: End

INCORRECTLY SHOWING FLOW / STAT THERIMISTOR FAULT

PCB

Next: End

INCORRECTLY SHOWING FLUE THERMISTOR FAULT

PCB

Next: End

STATING INCORRECT POLARITY WHEN OK

PCB

Next: End

INCORRECTLY FAULTING A62

PCB

Next: End

FILTER RESTRICTED OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION FLOW METER, FILTER AND RESTRICTOR

Next: !p2075

FLOW RESTRICTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION FLOW METER, FILTER AND RESTRICTOR

Next: !p2077

FLOW TURBINE RESTRICTED / BLOCKED OR JAMMED

CHARACTERISTIC TEST FROM INSPECTION FLOW METER, FILTER AND RESTRICTOR

Next: !p2079

FAULT CODE SHOWN

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p2551

APPLIANCE ATTEMPTS TO FIRE WHEN SELF CHECK COMPLETE

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p2557

FAN DOES NOT STOP WHEN SELF CHECK COMPLETE

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p2583

DISPLAY DOES NOT OPERATE

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY OPERATION

Next: p2634

DISPLAY OPERATES BUT IS JUMBLED OR DISTORTED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY OPERATION

Next: !p2650

FAN BEHAVES AS DESCRIBED ABOVE BUT PUMP DOES NOT PULSE AS DESCRIBED

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p2653

FAN BEHAVES AS DESCRIBED ABOVE BUT PUMP RUNS CONTINUOUSLY

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p2659

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p2699

INLET PRESSURE SATISFACTORY BUT DOES NOT DIP DURING SPARKING

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: p2703

INLET PRESSURE LOW OR DIES AWAY DURING IGNITION

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: !p2731

ELECTRDOE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2734

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2736

HEAT EXCHANGER FLUEWAYS RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2762

AIR / GAS MIXER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHANGER FLUEWAYS

Next: !p2764

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2766

HEAT EXCHANGER FLUEWAYS RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2796

ELECTRODE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHANGER FLUEWAYS

Next: !p2798

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2800

RADIATORS HEAT BUT HEAT EXCHANGER IS NOISY (KETTLES)

CHARACTERISTIC TEST FROM OPERATION CH

Next: p2885

DHW COOL, RADIATORS COOL

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p2901

HEAT EXCHANGER FLUEWAYS RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2917

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2919

HEAT EXCHANGER FLUEWAYS RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2942

HEAT EXCHANGER FLUEWAYS RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2952

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2955

HEAT EXCHANGER FLUEWAYS RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2961

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p2963

LOW WATER PRESSURE SWITCH BLOCKED

CHARACTERISTIC TEST FROM INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

Next: !p3005

PUMP MANIFOLD BLOCKED

CHARACTERISTIC TEST FROM INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

Next: !p3007

BURNER IGNITES BUT LIGHTS WITH EXPLOSIVE IGNITION

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION AND ESTABLISH

Next: p3264

ELECTRODE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHANGER FLUEWAYS

Next: !p3283

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

Next: !p3285

DHW COOL, PUMP RUNS AND RADIATORS HEAT

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p3314

HEAT EXCHANGER NOISY (KETTLES) DURING OPERATION

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p3692

FAN FREE TO ROTATE

CHARACTERISTIC TEST FROM OBSERVATION FAN ROTATION AND RESISTANCE

Next: !p3357

FAN RESISTANCES NOT AS EXPECTED

CHARACTERISTIC TEST FROM OBSERVATION FAN ROTATION AND RESISTANCE

Next: !p3359

POOR ELECTRICAL CONNECTION BETWEEN FAN PCB AND FAN MOTOR

CHARACTERISTIC TEST FROM OBSERVATION FAN ROTATION AND RESISTANCE

Next: !p3361

ELECTRODE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHANGER FLUEWAYS

Next: !p3735

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION AND ESTABLISH

Next: p67

BURNER IGNITES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION AND ESTABLISH

Next: p254

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION AND ESTABLISH

Next: p71

DHW TOO HOT

CHARACTERISTIC TEST FROM OPERATION DHW

Next: p1984

APPLIANCE REACHES TEMP RADIATORS REMAIN COOL OR DO NOT HEAT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3082

APPLIANCE AND RADIATORS FAIL TO REACH SET TEMPERATURE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p3093

05/10/2021 14:08:23 2108_1_10_1 10/11/2021 14:20:38

06/10/2021 14:54:24

Next: End

OBSERVATION BURNER REMAINS ALIGHT

Next: !p1731, f2826

WATER SUPPLY TO PREMISES

TURN ON A COLD WATER TAP

Next: p2056, !f2080

OBSERVATION ISOLATE DHW DOES DEMAND STOP

ISOLATE THE DHW SUPPLY TO THE APPLIANCE ON THE
ISOLATING VALVE UNDERNEATH THE APPLIANCE

Next: !p2560, f2561

VOLTAGE DC FROM TURBINE (FIRING WITH NO DEMAND)

{GAINPCBACS}

Next: !p2562, !f2563

RESISTANCE FUSE MAINS

REMOVE FUSE FROM FUSED SPUR OR PLUG

Next: !p2637, f2638

FURTHER INVESTIGATION FUSE MAINS

Next: !p2639, !f2640

FURTHER INVESTIGATION FUSE F1

Next: !p2643, !f2644

RESISTANCE ELECTRODE AND LEAD

REMOVE IGNITION ELECTRODE FROM COMBUSTION DOOR
DISCONNECT IGNITION LEAD FROM THE PCB

Next: !p2743, !f2744

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X4 FROM THE PCB

Next: !p2750, f2751

RESISTANCE GAS VALVE

REMOVE THE CONNECTOR FROM THE GAS VALVE

Next: !p2752, !f2753

RESISTANCE DHW SENSOR AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p2811, f2812

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: !p2813, !f2814

INSPECTION CONDENSATE PIPE

Next: p2827, !f2828

RESET APPLIANCE - FAULT CODE

Next: !p2967, !f2968

OBSERVATION SYSTEM PRESSURE

Next: p2973, !f2974

RESISTANCE LOW WATER PRESSURE SWITCH

REMOVE THE LEADS FROM THE LOW WATER PRESSURE SWITCH (ORANGE LEADS)

Next: !p3001, f3002

INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

APPLIANCE DRAINED AND DISCHARGED
REMOVE THE WATER PRESSURE SWITCH FROM THE PUMP MANIFOLD

Next: !p3003, ?3004, ?3006

RESISTANCE PUMP - FUSE INVESTIGATION

REMOVE THE PUMP CONNECTOR

Next: !p3080, !f3081

OBSERVATION SYSTEM PRESSURE

Next: p3591, !f3613

OBSERVATION INTEGRAL TIMER

Next: p312, f313

OBSERVATION SYSTEM PRESSURE

Next: p3615, !f3639

OBSERVATION BOILER RECOGNISES DEMAND (EXT CONTROLS LINKED OUT)

REMOVE ALL EXTERNAL

Next: !p316, f315

OBSERVATION SYSTEM PRESSURE

Next: p3641, !f3665

RESISTANCE HARNESS EXTERNAL CONTROLS

REMOVE CONNECTOR X4 FROM THE PCB

Next: !p317, !f3476

RESISTANCE FLOW SENSOR / OVERHEAT STAT HARNESS

REMOVE CONNECTOR X3 FROM THE PCB
DISCONNECT CONNECTOR FROM THE FLOW SENSOR / OVERHEAT STAT

Next: !p3705, !f3706

INSTALLATION TIGHTNESS TEST

Next: p3239, !f3240

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p3309, !f3310

OBSERVATION CHECK PARAMETER B03 - WATER PRESSURE PROTECTION

Next: !p3323, !f3324

OBSERVATION FLOW SENSOR FITTED CORRECTLY

Next: p3375, !f3380

RESISTANCE FLOW SENSOR / OVERHEAT STAT HARNESS

REMOVE CONNECTOR X3 FROM THE PCB
DISCONNECT CONNECTOR FROM THE FLOW SENSOR / OVERHEAT STAT

Next: !p3709, !f3710

VOLTAGE DC TURBINE - DEMAND

{GAINPCBACS}

Next: !p3412, f3413

VOLTAGE DC TURBINE - SEND

ENSURE NO DEMANDS

Next: p3414, f3578

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: p3419, !f3420

VOLTAGE INTEGRAL TIMER

{GAINPCBACS}

Next: p3493, !f3494

RESISTANCE INTEGRAL TIMER

DISCONNECT THE TWO LEADS FROM TERMINALS 3 AND 4 ON THE CLOCK
CLOCK SWITCHED ON

Next: !p3499, !f3500

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p3506, !f3507

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p3511, !f3512

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p3560, !f3561

VOLTAGE DC TURBINE - SEND (TURBINE DISCONNECTED)

ENSURE NO DEMANDS
REMOVE THE CONNECTOR FROM THE FLOW TURBINE AND MAKE SAFE

Next: !p3703, f3742

RESISTANCE INTEGRAL TIMER - FUSE INVESTIGATION

DISCONNECT THE LEADS FROM TERMINALS 1 AND 2 ON THE CLOCK MOTOR

Next: !p3740, !f3741

RESISTANCE HARNESS TURBINE

REMOVE THE CONNECTOR FROM THE FLOW TURBINE

Next: !p3743, !f3744

OBSERVATION DHW SENSOR FITTED CORRECTLY

Next: p3761, !f3762

OBSERVATION CHECK PARAMETER B11 - VARIABLE INPUT SWITCH

Next: !p3799, !f3800

RESISTANCE EXTERNAL PROBE LINK

Next: !p3824, !f3825

OBSERVATION FAN RUNNING

NO DEMANDS

Next: p483, f472

OBSERVATION FAN ROTATION AND RESISTANCE

REMOVE THE PCB FROM THE FAN ASSEMBLY

Next: p3362, ?3356, ?3358, ?3360

RESISTANCE RETURN SENSOR AND HARNESS

REMOVE CONNECTOR X4 FROM THE PCB

Next: !p728, f727

RESISTANCE RETURN SENSOR

REMOVE THE LEADS FROM THE RETURN SENSOR (GREEN LEADS)

Next: !p3450, !f3451

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p733, f734

RESISTANCE FLOW SENSOR / OVERHEAT STAT HARNESS

REMOVE CONNECTOR X3 FROM THE PCB
DISCONNECT CONNECTOR FROM THE FLOW SENSOR / OVERHEAT STAT

Next: !p3707, !f3708

RESISTANCE EXHAUST TEMPERATURE SENSOR AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p777, f776

RESISTANCE HARNESS EXHAUST TEMPERATURE SENSOR

REMOVE THE SILENCER

Next: !p3381, !f3382

SOCKET AND SEE TEST

{GAINPCBACS}

Next: !p786, !f787

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR X4 FROM THE PCB

Next: !p810, f811

RESISTANCE GAS VALVE

REMOVE THE CONNECTOR FROM THE GAS VALVE

Next: !p3452, !f3453

RESISTANCE PUMP AND HARNESS - FUSE INVESTIGATION

REMOVE CONNECTOR X2 FROM THE PCB

Next: p3074, f3079

INSPECTION AIR / GAS MIXER

REMOVE THE INSPECTION COVER FROM THE AIR / GAS MIXER ASSEMBLY

Next: p1650, !f2741

RESISTANCE ELECTRODE AND LEAD

REMOVE IGNITION ELECTRODE FROM COMBUSTION DOOR
DISCONNECT IGNITION LEAD FROM THE PCB

Next: p3028, !f3037

INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

REMOVE BURNER DOOR ASSEMBLY

Next: !p2945, ?2733, ?2735, ?2941

INSPECTION AIR / GAS MIXER

REMOVE THE INSPECTION COVER FROM THE AIR / GAS MIXER ASSEMBLY

Next: p3039, !f3046

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: !p2802, !f2803

INSPECTION DHW ISOLATION VALVE

Next: p2072, !f2061

INSPECTION FLOW METER ASSEMBLY

ISOLATE THE COLD WAT

Next: !p2899, ?2074, ?2076, ?2078

PRESSURE GAS INLET DROP

ATTACH PRESSURE GAUGE TO INLET PRESSURE TEST POINT

Next: p2133, ?2702, ?2730

OBSERVATION SPARKING OCCURS

DISCONNECT THE IGNIT

Next: p2145, f2738

INSPECTION FLUE

Next: p268, !f2740

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2784, !f2785

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p250, !f2773

INSPECTION FLUE

Next: p1658, !f2774

INSPECTION CONDENSATE PIPE

Next: p69, !f2772

FAULT CODES

Next: !p2552, !f2553

OBSERVATION WHICH DEMAND IS SHOWING

Next: p2558, f2559

OBSERVATION REMOVE EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: p2564, !f2565

TEMPERATURE PRIMARY HEAT EXCHANGER

ATTACH A TEMPERATURE CLAMP TO THE FLOW PIPE, AS CLOSE TO THE FLOW SENSOR / STAT AS POSSIBLE

Next: p3579, !f3580

RESISTANCE HARNESS FAN DC

REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X3 FROM THE PCB

Next: p3443, !f3448

VOLTAGE PCB MAINS INPUT

{GAINPCBACS}

Next: p2635, f2636

RESISTANCE FUSE F1

REMOVE THE FUSE FROM THE PCB

Next: p2641, f2642

OBSERVATION DISCONNECT X3

DISCONNECT CONNECTOR X3 FROM THE PCB AND MAKE SAFE

Next: p2645, !f2646

RESISTANCE HARNESS FAN DC

REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X3 FROM THE PCB

Next: !p2647, !f2648

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2654, !f2655

RESISTANCE HARNESS PUMP

REMOVE THE CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p2656, !f2657

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: !p2660, !f2662

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p1114, !f2745

PRESSURE EXPANSION VESSEL

APPLIANCE PRIMARY CIRCUIT DRAINED AND DISCHARGED

Next: !p2700, !f2701

INSPECTION FLUE

Next: p2747, !f2757

VOLTAGE DC TO GAS VALVE AT PCB

{GAINPCBACS}

Next: p2748, f2749

RESISTANCE HARNESS GAS VALVE

REMOVE CONNECTOR FROM THE GAS VALVE

Next: p2754, !f2755

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p3017, !f3026

INSPECTION AIR / GAS MIXER, BURNER AND HEAT EXCHANGER FLUEWAYS

REMOVE BURNER DOOR ASSEMBLY

Next: !p2760, ?2761, ?2763, ?2765

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p2786, !f2787

INSPECTION FLUE

Next: p2788, !f2789

INSPECTION AIR / GAS MIXER

REMOVE THE INSPECTION COVER FROM THE AIR / GAS MIXER ASSEMBLY

Next: p2790, !f2791

RESISTANCE ELECTRODE AND LEAD

REMOVE IGNITION ELECTRODE FROM COMBUSTION DOOR
DISCONNECT IGNITION LEAD FROM THE PCB

Next: p3048, !f3057

INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

REMOVE BURNER DOOR ASSEMBLY

Next: !p2794, ?2795, ?2797, ?2799

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2829, !f2830

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p2831, !f2832

INSPECTION FLUE

Next: p2833, !f2834

INSPECTION AIR / GAS MIXER

REMOVE THE INSPECTION COVER FROM THE AIR / GAS MIXER ASSEMBLY

Next: p3059, !f3066

INSPECTION BURNER, HEAT EXCHANGER FLUEWAYS AND ELECTRODE

REMOVE BURNER DOOR ASSEMBLY

Next: !p2958, ?2960, ?2962, ?3734

INSPECTION SYSTEM FILLED AND VENTED

Next: p3667, !f3675

PUMP LIMPET

Next: p2870, !f2875

INSPECTION INTERNAL BYPASS

Next: !p3745, !f3746

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p2878, !f2880

RESISTANCE RETURN SENSOR

REMOVE THE LEADS FROM THE RETURN SENSOR (GREEN LEADS)

Next: p3289, !f3290

INSPECTION SYSTEM FILLED AND VENTED

Next: p3677, !f3683

PUMP LIMPET

Next: p2902, !f2903

TEMPERATURE COMPARISON OF HOT WATER - EXTERNAL MIXING TEST

Next: p3767, !f2907

INSPECTION INTERNAL BYPASS

Next: !p2904, !f2905

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: p2908, !f2909

PRESSURE GAS INLET (DHW TOO COOL)

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p3293, !f3305

INSPECTION FLUE

Next: p3564, !f3576

INSPECTION BURNER AND HEAT EXCHANGER FLUEWAYS

REMOVE BURNER DOOR ASSEMBLY

Next: !p2914, ?2916, ?2918

INSPECTION BURNER AND HEAT EXCHANGER FLUEWAYS

REMOVE BURNER DOOR ASSEMBLY

Next: !p2950, ?2951, ?2954

OBSERVATION SYSTEM PRESSURE RISE

Next: p2975, !f2976

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

REMOVE CONNECTOR X4 FROM THE PCB

Next: p2989, f2992

OBSERVATION CHECK PARAMETER B03 - WATER PRESSURE PROTECTION

Next: !p2990, !f2991

INSPECTION INJECTOR

UNDO THE TOP NUT OF THE GAS VALVE, SWING PIPE AROUND AND REMOVE THE INJECTOR

Next: p3541, !f3548

INSPECTION INJECTOR

UNDO THE TOP NUT OF THE GAS VALVE, SWING PIPE AROUND AND REMOVE THE INJECTOR

Next: p2758, !f3027

INSPECTION INJECTOR

UNDO THE TOP NUT OF THE GAS VALVE, SWING PIPE AROUND AND REMOVE THE INJECTOR

Next: p1653, !f3038

INSPECTION INJECTOR

UNDO THE TOP NUT OF THE GAS VALVE, SWING PIPE AROUND AND REMOVE THE INJECTOR

Next: p2949, !f3047

INSPECTION INJECTOR

UNDO THE TOP NUT OF THE GAS VALVE, SWING PIPE AROUND AND REMOVE THE INJECTOR

Next: p2792, !f3058

INSPECTION INJECTOR

UNDO THE TOP NUT OF THE GAS VALVE, SWING PIPE AROUND AND REMOVE THE INJECTOR

Next: p2835, !f3067

RESISTANCE FAN - FUSE INVESTIGATION

REMOVE THE FAN PCB

Next: p3326, !f3328

OBSERVATION SYSTEM PRESSURE

Next: p2841, !f3092

OBSERVATION SYSTEM PRESSURE

Next: p3581, !f3589

OBSERVATION SYSTEM PRESSURE RISE

Next: p3102, !f3122

INSPECTION VALVES FLOW AND RETURN

Next: p3104, !f3123

OBSERVATION SENSORS CORRECTLY FITTED

Next: p3106, !f3107

RESISTANCE RETURN SENSOR

REMOVE THE LEADS FROM THE RETURN SENSOR (GREEN LEADS)

Next: p3108, !f3109

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p3809, !f3111

OBSERVATION PUMP RUNNING FOR OVERHEAT

ENSURE APPLIANCE IS COOL

Next: p3112, f3510

PUMP LIMPET

Next: p3749, !f3752

OBSERVATION BOILER RECOGNISES DEMAND (EXT CONTROLS LINKED OUT)

REMOVE ALL EXTERNAL

Next: !p3483, f3492

OBSERVATION SYSTEM PRESSURE RISE

Next: p3208, !f3230

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p3209, f3210

INSPECTION VALVES FLOW AND RETURN

Next: p3214, !f3229

OBSERVATION SENSORS CORRECTLY FITTED

Next: p3215, !f3216

RESISTANCE RETURN SENSOR

REMOVE THE LEADS FROM THE RETURN SENSOR (GREEN LEADS)

Next: p3217, !f3218

OBSERVATION PUMP RUNNING FOR OVERHEAT

ENSURE APPLIANCE IS COOL

Next: p3219, f3505

PUMP LIMPET

Next: p3753, !f3756

PRESSURE STANDING RETURN

ATTACH PRESSURE GAUG

Next: p3241, !f3242

RESISTANCE ELECTRODE AND LEAD

REMOVE IGNITION ELECTRODE FROM COMBUSTION DOOR
DISCONNECT IGNITION LEAD FROM THE PCB

Next: !p3243, !f3244

OBSERVATION SYSTEM PRESSURE RISE

Next: p3246, !f3247

OBSERVATION SENSORS CORRECTLY FITTED

Next: p3248, !f3249

RESISTANCE EXHAUST TEMPERATURE SENSOR AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p3250, !f3251

RESISTANCE RETURN SENSOR

REMOVE THE LEADS FROM THE RETURN SENSOR (GREEN LEADS)

Next: p3252, !f3253

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p3550, !f3558

PUMP LIMPET

Next: p3256, !f3257

INSPECTION FLUE

Next: p3258, !f3259

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

REMOVE BURNER DOOR ASSEMBLY

Next: !p3260, !f3261

OBSERVATION CHECK IGNITION LEVEL - PARAMETER P01

Next: p3265, !f3266

OBSERVATION SPARKING OCCURS

DISCONNECT THE IGNIT

Next: p3267, !f3268

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p3271, !f3288

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p3272, !f3273

INSPECTION AIR / GAS MIXER

REMOVE THE INSPECTION COVER FROM THE AIR / GAS MIXER ASSEMBLY

Next: p3274, !f3275

RESISTANCE ELECTRODE AND LEAD

REMOVE IGNITION ELECTRODE FROM COMBUSTION DOOR
DISCONNECT IGNITION LEAD FROM THE PCB

Next: p3276, !f3277

INSPECTION INJECTOR

UNDO THE TOP NUT OF THE GAS VALVE, SWING PIPE AROUND AND REMOVE THE INJECTOR

Next: p3278, !f3279

INSPECTION BURNER AND SPARK GAP

REMOVE BURNER DOOR ASSEMBLY

Next: !p3280, ?3282, ?3284

OBSERVATION CHECK CH MAXIMUM OUTPUT - PARAMETER P13

Next: !p3291, !f3292

OBSERVATION DHW MAXIMUM OUTPUT - PARAMETER P20

Next: p2910, !f3306

RESISTANCE HARNESS PUMP

REMOVE THE CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p3311, !f3312

RESISTANCE FAN HARNESS - FUSE INVESTIGATION

REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X2 FROM THE PCB

Next: p3736, !f3737

RESISTANCE HARNESS FAN AC

REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X2 FROM THE PCB

Next: p3429, !f3437

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p3376, f3377

RESISTANCE HARNESS TURBINE

REMOVE THE CONNECTOR FROM THE FLOW TURBINE

Next: !p3416, !f3417

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p3421, !f3422

RESISTANCE RETURN SENSOR

REMOVE THE LEADS FROM THE RETURN SENSOR (GREEN LEADS)

Next: p3515, !f3529

RESISTANCE HARNESS FAN DC

REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X3 FROM THE PCB

Next: p473, !f3438

VOLTAGE DC FAN AT PCB

{GAINPCBACS}
REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY AND MAKE SAFE

Next: p3444, !f3445

VOLTAGE DC FROM FAN HALL SENSOR

{GAINPCBACS}
REMOVE FAN PCB COVER IF REQUIRED

Next: !p3446, !f3447

RESISTANCE HARNESS X1

Next: p3495, !f3496

RESISTANCE INTEGRAL TIMER AND HARNESS

REMOVE CONNECTOR X4 FROM THE PCB
ENSURE CH CONTROLS ARE CALLING FOR HEAT
CLOCK SWITCHED TO ON

Next: !p3497, f3498

RESISTANCE HARNESS PUMP

REMOVE THE CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p3508, !f3509

RESISTANCE HARNESS PUMP

REMOVE THE CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p3513, !f3514

RESISTANCE EXHAUST TEMPERATURE SENSOR AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: p3713, !f3718

INSPECTION AIR / GAS MIXER

REMOVE THE INSPECTION COVER FROM THE AIR / GAS MIXER ASSEMBLY

Next: p2912, !f3549

OBSERVATION PUMP RUNNING FOR OVERHEAT

ENSURE APPLIANCE IS COOL

Next: p3254, f3559

RESISTANCE HARNESS PUMP

REMOVE THE CONNECTOR FROM THE PUMP ASSEMBLY

Next: !p3562, !f3563

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p3008, !f3577

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: p3699, !f3700

INSPECTION SYSTEM FILLED AND VENTED

Next: p3790, !f3590

INSPECTION SYSTEM FILLED AND VENTED

Next: p3101, !f3614

INSPECTION SYSTEM FILLED AND VENTED

Next: p3245, !f3640

INSPECTION SYSTEM FILLED AND VENTED

Next: p3167, !f3666

OBSERVATION SYSTEM PRESSURE RISE

Next: p84, !f3676

OBSERVATION SYSTEM PRESSURE

Next: p3684, !f3690

OBSERVATION SYSTEM PRESSURE RISE

Next: p2886, !f3691

OBSERVATION SYSTEM PRESSURE

Next: p3693, !f3694

OBSERVATION SYSTEM PRESSURE RISE

Next: !p3695, !f3696

RESISTANCE FLOW SENSOR / STAT COMBINED AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p3701, !f3702

OBSERVATION EXTERNAL PROBE LINK FITTED

Next: p3714, !f3715

RESISTANCE EXTERNAL PROBE LINK AND HARNESS

REMOVE CONNECTOR X4 FROM THE PCB

Next: !p3716, f3804

RESISTANCE INTEGRAL TIMER AND HARNESS - FUSE INVESTIGATION

REMOVE CONNECTOR X1 FROM THE PCB

Next: !p3738, f3739

INSPECTION INTERNAL BYPASS - OVERHEAT

APPLIANCE DRAINED AND DISCHARGED
REMOVE THE INTERNAL BYPASS VALVE

Next: !p3822, !f3751

INSPECTION INTERNAL BYPASS - OVERHEAT

APPLIANCE DRAINED AND DISCHARGED
REMOVE THE INTERNAL BYPASS VALVE

Next: !p3754, !f3755

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: !p3763, !f3764

OBSERVATION DHW SENSOR FITTED CORRECTLY

Next: p2906, !f3789

OBSERVATION SYSTEM PRESSURE RISE

Next: p2877, !f3798

RESISTANCE DHW SENSOR

REMOVE THE LEADS FROM THE DHW SENSOR (BLUE LEADS)

Next: p3110, !f3821

VOLTAGE AC TO FAN AT PCB

Next: p479, !f480

VOLTAGE DC FAN AT PCB

{GAINPCBACS}
REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY AND MAKE SAFE

Next: !p3440, !f3441

RESISTANCE HARNESS FAN DC

REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY
REMOVE CONNECTOR X3 FROM THE PCB

Next: p484, !f485

VOLTAGE DC FAN AT PCB

{GAINPCBACS}
REMOVE THE CONNECTOR FROM THE FAN ASSEMBLY AND MAKE SAFE

Next: p486, !f487

VOLTAGE DC FROM FAN HALL SENSOR

{GAINPCBACS}
REMOVE FAN PCB COVER IF REQUIRED

Next: !p488, !f3442

INSPECTION CONDENSATE PIPE

Next: p2120, !f2739

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p248, !f2771

INSPECTION CONDENSATE PIPE

Next: p230, !f2783

INSPECTION VALVES FLOW AND RETURN

Next: p2869, !f2872

System Information

  • Total Tests: 579
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control