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:

ARISTON MICROSYSTEM RFFI 21 AND 28

GLOBALLY REPLACED

Next: &1, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

INFORMATION CASE REMOVAL

Next: &3, !f2

OBSERVATION BOILER STANDBY

NO DEMANDS

Next: &4, ?6, ?8

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &32, !f5

OBSERVATION PUMP RUNS

Next: &54, f33

OBSERVATION FAN RUNS

ENSURE BOILER IS COOL

Next: &76, f55

OBSERVATION BURNER IGNITES AND ESTABLISHES

SET BOILER THERMOSTAT TO MAX

Next: &202, ?77, ?79, ?81, ?98, ?100, ?660

PRESSURE BURNER MAX AND MIN

DISCONNECT ONE LEAD

Next: &207, ?870, ?872

OPERATION CH

Next: &255, ?208, ?210, ?212, ?214, ?407, ?466

OPERATION DHW

Next: &453, ?256, ?258

FUSE INVESTIGATION TREE (MAINS)

INTENTIONALLY BLANK - HEADER FOR FUSE INVESTIGATION (MAINS)

Next: &nff, f351

FUSE INVESTIGATION TREE (APPLIANCE)

INTENTIONALLY BLANK - HEADER FOR FUSE INVESTIGATION (APPLIANCE)

Next: &nff, f335

OBSERVATION RUN BOILER TO TEMPERATURE

ATTACH TEMPERATURE C

Next: &nff, ?929, ?931

LOCKOUT NOT RESETTING INVESTIGATION

OUTSIDE MODEL

Next: &nff, f655

INSPECTION INTERNAL BYPASS (OPERATION)

DRAIN BOILER PRIMARY CIRCUIT

Next: &nff, !f847

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

THERMOSTAT - REGULATION

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

GAS VALVE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING THEN LOCKOUT

ELECTRODE - IGNITION (GAP)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING THEN LOCKOUT

PCB - CB3FF102MX (IGNITION PCB)

Next: End

OBSERVATION BOILER STANDBY

FAST FUSE 2AT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

EXCHANGER - MAIN (FLUEWAYS)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

GAS INLET PRESSURE

Next: End

INFORMATION CASE REMOVAL

Z REDIRECT

Next: End

OBSERVATION BOILER STANDBY - MAINS

CABLE - PCB TO TERMINAL BOARD

Next: End

OPERATION CH - NOISY

PUMP

Next: End

OBSERVATION BOILER STANDBY

FROST PROTECTION

Next: End

OPERATION CH - UP TO TEMP RADS COOL - RUNNING SLOW

PUMP

Next: End

OBSERVATION BOILER STANDBY

THERMOSTAT - ANTI FROST

Next: End

OBSERVATION BOILER STANDBY

Next: End

OBSERVATION BOILER STANDBY - FROST STAT

CABLE - LOW WATER PRESSURE SWITCH

Next: End

FUSE INVESTIGATION - APPLIANCE

GAS VALVE

Next: End

FUSE INVESTIGATION - APPLIANCE

PUMP

Next: End

FUSE INVESTIGATION - MAINS

GAS VALVE

Next: End

FUSE INVESTIGATION - MAINS

PUMP

Next: End

OBSERVATION FAN RUNS

CABLE - PCB

Next: End

OBSERVATION PUMP RUNS

SWITCH - PRESSURE - LOW WATER

Next: End

OBSERVATION PUMP RUNS - PRESSURE SWITCH

CABLE - LOW WATER PRESSURE SWITCH

Next: End

OBSERVATION PUMP RUNS 1

CABLE - PCB

Next: End

OBSERVATION PUMP RUNS 2

CABLE - PCB

Next: End

OPERATION CH - SHUTS DOWN TOO EARLY

PUMP

Next: End

OPERATION CH - SHUTS DOWN TOO EARLY

KNOB - CONTROL

Next: End

OPERATION CH - SHUTS DOWN TOO EARLY

THERMOSTAT - REGULATION

Next: End

OPERATION CH - UP TO TEMP RADS COOL

ISOLATION VALVES

Next: End

OPERATION CH

EXPANSION VESSEL

Next: End

FUSE INVESTIGATION - MAINS

FAN

Next: End

TYPE OF DIAGNOSTIC PROCEDURE

Z REDIRECT

Next: End

FUSE INVESTIGATION - APPLIANCE

FAN

Next: End

FUSE INVESTIGATION - APPLIANCE

CABLE (PLUG) FUSE INVESTIGATION

Next: End

FUSE INVESTIGATION - MAINS

CABLE (PLUG) FUSE INVESTIGATION

Next: End

OBSERVATION PUMP RUNS - EXT CONTROLS

CABLE - PCB TO TERMINAL BOARD

Next: End

OPERATION - SHUTS DOWN THEN BOILER GOES TO LOCKOUT

ISOLATION VALVES

Next: End

OBSERVATION PUMP RUNS

CABLE - PUMP

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

ELECTRODE - IGNITION (GAP)

Next: End

OPERATION CH - SHUTS DOWN THEN BOILER GOES TO LOCKOUT

THERMOSTAT - REGULATION

Next: End

OPERATION CH - SHUTS DOWN THEN GOES TO LOCKOUT

THERMOSTAT - OVERHEAT

Next: End

OPERATION CH - SHUTS DOWN THEN BOILER GOES TO LOCKOUT

THERMOSTAT - REGULATION (FITMENT)

Next: End

OBSERVATION BOILER STANDBY

Next: End

OBSERVATION BOILER STANDBY

MAINS FUSE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

FLUE

Next: End

OBSERVATION FAN RUNS

PIPE SILICONE - POSITIVE SIGNAL

Next: End

OBSERVATION FAN RUNS

FAN VENTURI

Next: End

OBSERVATION PUMP RUNS - CH LED

PCB - CT1 (CONTROL PCB)

Next: End

LOCKOUT RESET INVESTIGATION

CABLE - PCB

Next: End

LOCKOUT RESET INVESTIGATION

PCB - CT1 (CONTROL PCB)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

GAS INLET PRESSURE

Next: End

OBSERVATION FAN RUNS

THERMOSTAT - REGULATION

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

ELECTRODE - DETECTION

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

INJECTOR - BURNER

Next: End

FUSE INVESTIGATION - MAINS

THERMOSTAT - OVERHEAT

Next: End

FUSE INVESTIGATION - APPLIANCE

THERMOSTAT - OVERHEAT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

CABLE (DETECTION LEAD)

Next: End

OBSERVATION FAN RUNS - FAN

CABLE - FAN/AIR PRESSURE SWITCH

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

FAN

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

EXCHANGER - MAIN (FLUEWAYS)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

BURNER

Next: End

OPERATION CH - SHUTS DOWN THEN BOILER GOES TO LOCKOUT

RETURN MANIFOLD (INTERNAL BYPASS)

Next: End

OPERATION CH - SHUTS DOWN TOO EARLY

Next: End

OPERATION CH - RUNS BUT RADS COOL CANT GAS RATE

BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

GAS INLET PRESSURE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

THERMOSTAT - OVERHEAT

Next: End

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

GAS VALVE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

PCB - CB3FF102MX (IGNITION PCB)

Next: End

OBSERVATION PUMP RUNS - WIRED FROM ELSEWHERE

Next: End

OBSERVATION PUMP RUNS - SUPPLY TO EXT

CABLE - PCB TO TERMINAL BOARD

Next: End

OPERATION CH - UP TO TEMP RADS COOL

RETURN MANIFOLD (INTERNAL BYPASS)

Next: End

OPERATION CH - UP TO TEMP RADS COOL

Next: End

FUSE INVESTIGATION - MODUREG

GAS VALVE

Next: End

FUSE INVESTIGATION - MODUREG MAINS

GAS VALVE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

PIPE SILICONE - POSITIVE SIGNAL

Next: End

PRESSURE BURNER MAXIMUM AND MINIMUM - MINIMUM WRONG

GAS INLET PRESSURE

Next: End

PRESSURE BURNER MAXIMUM AND MINIMUM

GAS INLET PRESSURE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

FAN VENTURI

Next: End

PRESSURE BURNER MAX AND MIN

THERMOSTAT - REGULATION

Next: End

CH OPERATION - RUNS BUT RADS COOL

THERMOSTAT - REGULATION

Next: End

PRESSURE BURNER MAX AND MIN

GAS VALVE

Next: End

OBSERVATION RUN BOILER TO TEMPERATURE

THERMOSTAT - REGULATION (FITMENT)

Next: End

OBSERVATION RUN BOILER TO TEMPERATURE

THERMOSTAT - REGULATION

Next: End

OBSERVATION RUN BOILER TO TEMPERATURE (LOW RATE)

THERMOSTAT - REGULATION (FITMENT)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

SWITCH - AIR PRESSURE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

CABLE - FAN/AIR PRESSURE SWITCH

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT CROSSLIGHT

BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT CROSSLIGHT

INJECTOR - BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT CROSSLIGHT

GAS VALVE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT CROSSLIGHT

GAS INLET PRESSURE

Next: End

CROSS LIGHTING

THERMOSTAT - REGULATION

Next: End

CROSS LIGHTING

GAS VALVE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

PCB - CT1 (CONTROL PCB)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

CABLE - TWO STAGE THERMOSTAT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

CABLE - MODULATOR

Next: End

CROSS LIGHTING

GAS VALVE ADJUSTMENT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

GAS VALVE ADJUSTMENT

Next: End

PRESSURE BURNER MAX AND MIN

GAS VALVE ADJUSTMENT (MAX/MIN)

Next: End

PRESSURE BURNER MAX AND MIN - MIN

GAS VALVE ADJUSTMENT (MAX/MIN)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING THEN LOCKOUT

ELECTRODE - IGNITION

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING THEN LOCKOUT

GENERATOR - SPARK

Next: End

OBSERVATION BOILER STANDBY - INTERNAL FUSE

Z REDIRECT

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

INJECTOR - BURNER

Next: End

OBSERVATION BOILER STANDBY

PCB - CT1 (CONTROL PCB)

Next: End

OPERATION CH - NOISY

EXCHANGER - MAIN (WATERWAYS)

Next: End

OPERATION DHW - UNSATISFACTORY

Next: End

OPERATION DHW - DOES NOT RESPOND

Next: End

OBSERVATION BOILER STANDBY - FIRING NO DEMAND

PCB - CT1 (CONTROL PCB)

Next: End

FUSE INVESTIGATION - APPLIANCE

CABLE - PUMP

Next: End

FUSE INVESTIGATION - MAINS

CABLE - PUMP

Next: End

NO APPARENT FAULT

FUSE FURTHER INVESTIGATION (MAINS)

Next: End

OBSERVATION FAN RUNS

PCB - CT1 (CONTROL PCB)

Next: End

OBSERVATION PUMP RUNS

PCB - CT1 (CONTROL PCB)

Next: End

OBSERVATION PUMP RUNS - NO VOLTAGE TO CONTROL PCB

PCB - CB3FF102MX (IGNITION PCB)

Next: End

OBSERVATION PUMP RUNS - NO VOLTAGE TO IGN

PCB - CT1 (CONTROL PCB)

Next: End

OPERATION CH - SHUTS DOWN TOO EARLY

PCB - CT1 (CONTROL PCB)

Next: End

OPERATION CH

PIPE - EXPANSION VESSEL

Next: End

FUSE INVESTIGATION - MAINS

CABLE - FAN/AIR PRESSURE SWITCH

Next: End

OBSERVATION PUMP RUNS

PUMP

Next: End

FUSE INVESTIGATION - APPLIANCE

CABLE - FAN/AIR PRESSURE SWITCH

Next: End

OPERATION CH - SHUTS DOWN THEN BOILER GOES TO LOCKOUT

PCB - CT1 (CONTROL PCB)

Next: End

OBSERVATION FAN RUNS - APS

CABLE - FAN/AIR PRESSURE SWITCH

Next: End

OBSERVATION FAN RUNS

FAN

Next: End

FUSE INVESTIGATION - MAINS

GENERATOR - SPARK

Next: End

FUSE INVESTIGATION - APPLIANCE

GENERATOR - SPARK

Next: End

NO POWER INVESTIGATION

Z REDIRECT

Next: End

OBSERVATION BOILER STANDBY - MAINS FUSE

Z REDIRECT

Next: End

NO APPARENT FAULT

FUSE FURTHER INVESTIGATION (APPLIANCE)

Next: End

OBSERVATION FAN RUNS

SWITCH - AIR PRESSURE

Next: End

LOCKOUT RESET INVESTIGATION

PCB - CB3FF102MX (IGNITION PCB)

Next: End

OBSERVATION FAN RUNS

CABLE - TWO STAGE THERMOSTAT

Next: End

FUSE INVESTIGATION - MAINS

CABLE (OVERHEAT)

Next: End

FUSE INVESTIGATION - APPLIANCE

CABLE (OVERHEAT)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT ESTABLISH

PCB - CB3FF102MX (IGNITION PCB)

Next: End

OBSERVATION PUMP RUNS

GAUGE - PRESSURE

Next: End

OBSERVATION PUMP RUNS

SYSTEM PRESSURE

Next: End

OPERATION CH - RUNS BUT RADS COOL

GAUGE - PRESSURE

Next: End

OPERATION CH - UP TO TEMP RADS COOL

SYSTEM PRESSURE

Next: End

OPERATION CH - NOISY

GAUGE - PRESSURE

Next: End

OBSERVATION FAN RUNS

PCB - CB3FF102MX (IGNITION PCB)

Next: End

OPERATION CH - NOISY

SYSTEM PRESSURE

Next: End

OPERATION CH - UP TO TEMP RADS COOL

GAUGE - PRESSURE

Next: End

OPERATION CH - RUNS BUT RADS COOL

SYSTEM PRESSURE

Next: End

OPERATION CH - SHUTS DOWN TOO EARLY

GAUGE - PRESSURE

Next: End

OPERATION CH - SHUTS DOWN TOO EARLY

SYSTEM PRESSURE

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - BAFFLES

FLUE

Next: End

OPERATION CH - SHUTS DOWN THEN BOILER GOES TO LOCKOUT - INTERNAL BYPASS

PCB - CT1 (CONTROL PCB)

Next: End

OPERATION CH - RUNS BUT RADS COOL CANT GAS RATE

INJECTOR - BURNER

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION - OVERHEAT

CABLE (OVERHEAT)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

GENERATOR - SPARK

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - SPARKING NO IGNITION

GAS VALVE ADJUSTMENT

Next: End

OBSERVATION PUMP RUNS

Next: End

OBSERVATION PUMP RUNS - NO VOLTAGE TO EXT CONTROLS

PCB - CT1 (CONTROL PCB)

Next: End

OPERATION CH - UP TO TEMP RADS COOL

SYSTEM RESTRICTION OR BLOCKAGE OR INTERNAL BYPASS

Next: End

FUSE INVESTIGATION

CABLE - MODULATOR

Next: End

FUSE INVESTIGATION MAINS

CABLE - MODULATOR

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

FAN

Next: End

PRESSURE BURNER MAXIMUM AND MINIMUM

PCB - CT1 (CONTROL PCB)

Next: End

PRESSURE BURNER MAX AND MIN

CABLE - TWO STAGE THERMOSTAT

Next: End

PRESSURE BURNER MAX AND MIN

CABLE - MODULATOR

Next: End

OBSERVATION RUN BOILER TO TEMPERATURE

PCB - CT1 (CONTROL PCB)

Next: End

OBSERVATION RUN BOILER TO TEMPERATURE - LOW RATE

THERMOSTAT - REGULATION

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - NO SPARKING NO LOCKOUT

PCB - CB3FF102MX (IGNITION PCB)

Next: End

OBSERVATION BURNER IGNITES AND ESTABLISHES - DOES NOT CROSSLIGHT

GAS VALVE SOFT LIGHT

Next: End

CROSS LIGHTING

PCB - CT1 (CONTROL PCB)

Next: End

CROSS LIGHTING

CABLE - TWO STAGE THERMOSTAT

Next: End

CROSS LIGHTING

CABLE - MODULATOR

Next: End

BURNER BAFFLES OUT OR LIFTS OFF

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p101

BOILER REACHES TEMPERATURE BUT RADIATORS REMAIN COOL

CHARACTERISTIC TEST FROM OPERATION CH

Next: p248

BOILER SHUTS DOWN BEFORE REACHING TEMPERATURE (NO LOCKOUT)

CHARACTERISTIC TEST FROM OPERATION CH

Next: p418

CH OPERATES SATISFACTORILY BUT BOILER IS NOISY

CHARACTERISTIC TEST FROM OPERATION CH

Next: p213

BOILER CONTINUES TO FIRE BUT RADIATORS ONLY GET WARM

CHARACTERISTIC TEST FROM OPERATION CH

Next: p215

DHW OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p257

BOILER DOES NOT RUN WITH DHW DEMAND

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p259

BURNER SHUTS DOWN THEN BOILER GOES TO LOCKOUT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p409

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p467

PUMP RUNS OR BOILER FIRES WITH NO DEMAND

CHARACTERISTIC TEST FROM OBSERVATION BOILER STANDBY

Next: p7

BURNER NOT CROSS LIGHTING PROPERLY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p964

SYSTEM PRESSURE OK BUT GAUGE DOES NOT RESPOND TO INCREASE

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p708

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p710

SYSTEM PRESSURE OK BUT GAUGE DOES NOT RESPOND TO INCREASE

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p713

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p715

SYSTEM PRESSURE OK BUT GAUGE DOES NOT RESPOND TO INCREASE

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p718

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p720

SYSTEM PRESSURE OK BUT GAUGE DOES NOT RESPOND TO INCREASE

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p723

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p725

SYSTEM PRESSURE OK BUT GAUGE DOES NOT RESPOND TO INCREASE

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p728

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM INSPECTION PRESSURE SYSTEM

Next: !p730

NO SPARKING SEEN THEN BOILER GOES TO LOCKOUT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p78

NO SPARKING SEEN BUT BOILER DOES NOT LOCK OUT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p80

POWER LED DOES NOT ILLUMINATE

CHARACTERISTIC TEST FROM OBSERVATION BOILER STANDBY

Next: p11

SPARKING PRESENT BUT BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p795

MAXIMUM PRESSURE WRONG BUT MINIMUM PRESSURE IS CORRECT

CHARACTERISTIC TEST FROM PRESSURE BURNER MAX AND MIN

Next: p883

MINIMUM PRESSURE INCORRECT

CHARACTERISTIC TEST FROM PRESSURE BURNER MAX AND MIN

Next: p877

BOILER DOES NOT SWITCH TO MINIMUM RATE

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO TEMPERATURE

Next: p938

BOILER TEMPERATURE EXCEEDS 85°C BUT BOILER CONTINUES TO FIRE

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO TEMPERATURE

Next: p933

BURNER IGNITES SMOOTHLY BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p675

16/01/2020 09:12:02 1912_3_50_1 06/02/2020 09:54:33

27/01/2020 07:00:49

Next: End

RESISTANCE THERMOSTAT (LOW FLAME)

{GAINPCBACS}
DISCONNECT WHITE LEADS AT THE THERMOSTAT

Next: !p1002, !f1003

RESISTANCE GAS VALVE MODUREG

REMOVE CONNECTOR FROM GAS VALVE MODUREG

Next: !p1006, !f1007

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}

Next: !p106, !f107

FUSE FURTHER INVESTIGATION (INTERNAL)

THE INFORMATION PROV

Next: !p15, !f16

RESISTANCE MAINS FUSE

REMOVE FUSE FROM FUSED SPUR

Next: p584, f587

OBSERVATION CHECK CH TURNED ON

Next: p630, !f652

INSPECTION HARNESS PLUG

Next: p500, !f514

RESISTANCE GAS VALVE

UNPLUG HARNESS / SPARK GENERATOR FROM THE GAS VALVE

Next: p581, !f343

RESISTANCE PUMP

REMOVE PUMP PLUG

Next: !p349, !f350

INSPECTION HARNESS PLUG

Next: p481, !f513

RESISTANCE GAS VALVE

UNPLUG HARNESS / SPARK GENERATOR FROM THE GAS VALVE

Next: p578, !f359

RESISTANCE PUMP

REMOVE PUMP PLUG

Next: !p362, !f363

RESISTANCE HARNESS PCB TO PCB

DISCONNECT PCB TO PCB HARNESS FROM CN104 ON THE CONTROL PCB AND CN100 ON THE IGNITION PCB

Next: !p387, !f388

VOLTAGE IGNITION PCB TO CONTROL PCB (PIN2 CN104)

Next: p395, f400

VOLTAGE CONTROL PCB TO IGNITION PCB (PIN 1 CN104)

Next: p401, f402

RESISTANCE HARNESS PCB TO PCB

DISCONNECT PCB TO PCB HARNESS FROM CN104 ON THE CONTROL PCB AND CN100 ON THE IGNITION PCB

Next: !p405, !f406

RESISTANCE FAN (FUSE INVESTIGATION)

DISCONNECT LEADS FROM FAN (TAKE CARE NOT TO DAMAGE SPADES)

Next: !p498, !f499

RESISTANCE FAN (FUSE INVESTIGATION)

DISCONNECT LEADS FROM FAN (TAKE CARE NOT TO DAMAGE SPADES)

Next: !p511, !f512

VOLTAGE FAN AT FAN

REMOVE COMBUSTION CASE

Next: !p56, f57

RESISTANCE APS (N/C)

DISCONNECT LEADS AT THE COMMON (C) AND NORMALLY CLOSED (N/C) TERMINALS ON THE AIR PRESSURE SWITCH

Next: !p559, f58

RESISTANCE APS AND HARNESS (N/C)

{GAINPCBACS}
DISC

Next: p59, f551

INSPECTION APS TUBES

Next: p60, !f61

FUSE FURTHER INVESTIGATION (MAINS)

THE INFORMATION PROV

Next: !p588, !f589

RESISTANCE HARNESS PCB TO PCB

DISCONNECT PCB TO PCB HARNESS FROM CN104 ON THE CONTROL PCB AND CN100 ON THE IGNITION PCB

Next: p656, !f657

RESISTANCE THERMOSTAT

{GAINPCBACS}
DISCONNECT GREY LEADS AT THE THERMOSTAT

Next: !p67, !f68

PRESSURE GAS INLET

ATTACH A PRESSURE GA

Next: p997, !f679

RESISTANCE OVERHEAT THERMOSTAT (INVESTIGATION)

DISCONNECT LEADS FROM OVERHEAT THERMOSTAT

Next: !p698, !f699

RESISTANCE OVERHEAT THERMOSTAT (INVESTIGATION)

DISCONNECT LEADS FROM OVERHEAT THERMOSTAT

Next: !p701, !f702

INSPECTION INTERNAL BYPASS

DRAIN BOILER PRIMARY CIRCUIT

Next: !p768, !f769

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
DISCONNECT CN102 FROM THE IGNITION PCB

Next: p825, f826

RESISTANCE OVERHEAT THERMOSTAT AND HARNESS

DISCONNECT INLINE CO

Next: p827, f828

RESISTANCE OVERHEAT THERMOSTAT

DISCONNECT ONE LEAD FROM OVERHEAT THERMOSTAT

Next: !p829, !f830

OBSERVATION HOW ARE EXTERNAL CONTROLS WIRED

GAIN ACCESS TO BOILER TERMINAL BLOCK

Next: p839, !f842

RESISTANCE HARNESS EXTERNAL CONTROLS

DISCONNECT CN100 FROM THE CONTROL PCB

Next: !p844, !f845

INSPECTION APS TUBES

Next: p742, !f87

RESISTANCE GAS VALVE MODUREG

REMOVE CONNECTOR FROM GAS VALVE MODUREG

Next: !p859, !f860

RESISTANCE GAS VALVE MODUREG

REMOVE CONNECTOR FROM GAS VALVE MODUREG

Next: !p868, !f869

RESISTANCE THERMOSTAT AND HARNESS (LOW FLAME)

DISCONNECT CN101 FROM THE CONTROL PCB

Next: !p917, f918

RESISTANCE THERMOSTAT (LOW FLAME)

{GAINPCBACS}
DISCONNECT WHITE LEADS AT THE THERMOSTAT

Next: !p919, !f920

RESISTANCE GAS VALVE MODUREG

REMOVE CONNECTOR FROM GAS VALVE MODUREG

Next: !p927, !f928

PRESSURE GAS INLET

ATTACH A PRESSURE GA

Next: p985, !f984

RESISTANCE THERMOSTAT AND HARNESS (LOW FLAME)

DISCONNECT CN101 FROM THE CONTROL PCB

Next: !p988, f989

RESISTANCE THERMOSTAT (LOW FLAME)

{GAINPCBACS}
DISCONNECT WHITE LEADS AT THE THERMOSTAT

Next: !p990, !f991

RESISTANCE GAS VALVE MODUREG

REMOVE CONNECTOR FROM GAS VALVE MODUREG

Next: !p994, !f995

RESISTANCE THERMOSTAT AND HARNESS (LOW FLAME)

DISCONNECT CN101 FROM THE CONTROL PCB

Next: !p1000, f1001

VOLTAGE MAINS IN AT PCB

{GAINPCBACS}

Next: !p23, !f22

PRESSURE GAS INLET

ATTACH A PRESSURE GA

Next: p752, !f194

INSPECTION SPARK ELECTRODES GAP

Next: !p103, !f104

RESISTANCE INTERNAL FUSE

GAIN ACCESS TO BOILER TERMINAL BLOCK
REMOVE THE INTERNAL FUSE AND HOLDER FROM THE TERMINAL BLOCK

Next: p9, f14

PRESSURE BURNER

ATTACH A PRESSURE GAUGE TO THE BURNER PRESSURE TEST POINT

Next: p531, f824

INSPECTION BURNER

REMOVE ELECTRODE COVER (2X SCREWS) THEN
INNER COMBUSTION COVER (5X SCREWS)

Next: !p170, !f171

INSPECTION HEAT EXCHANGER

REMOVE ELECTRODE COVER (2X SCREWS) THEN INNER COMBUSTION COVER (5X SCREWS)

Next: !p88, !f193

INSPECTION PRESSURE SYSTEM

Next: p232, ?717, ?719

INSPECTION PRESSURE SYSTEM

Next: p921, ?722, ?724

PUMP LIMPET TEST

Next: !p234, !f235

INSPECTION PRESSURE SYSTEM

Next: p457, ?712, ?714

PUMP LIMPET TEST

Next: p849, !f252

OBSERVATION DISCONNECT FROST STAT

DISCONNECT PLUG ON FROST THERMOSTAT AND MAKE SAFE

Next: p27, !f26

VOLTAGE EXTERNAL CONTROLS (NO DEMAND)

GAIN ACCESS TO BOILER TERMINAL BLOCK

Next: p28, !f29

RESISTANCE FROST STAT HARNESS

DISCONNECT PLUG MARKED CN102 ON THE CONTROL PCB

Next: !p30, !f31

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
DISCONNECT CN102 FROM THE IGNITION PCB

Next: p852, f341

RESISTANCE PUMP AND HARNESS

DISCONNECT CN102 FROM THE CONTROL PCB

Next: !p591, f348

VOLTAGE EXTERNAL CONTROLS AT TERMINAL BLOCK

GAIN ACCESS TO BOILER TERMINAL BLOCK

Next: p36, f835

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
DISCONNECT CN102 FROM THE IGNITION PCB

Next: p861, f357

RESISTANCE PUMP AND HARNESS

DISCONNECT CN102 FROM THE CONTROL PCB

Next: !p367, f361

RESISTANCE WATER PRESSURE SWITCH

DISCONNECT PLUG FROM

Next: p44, !f39

RESISTANCE WATER PRESSURE SWITCH AND HARNESS

ENSURE PLUG HAS BEEN

Next: p396, !f397

RESISTANCE HARNESS EXTERNAL CONTROLS

DISCONNECT CN100 FROM THE CONTROL PCB

Next: !p398, !f515

RESISTANCE HARNESS PCB TO PCB

DISCONNECT PCB TO PCB HARNESS FROM CN104 ON THE CONTROL PCB AND CN100 ON THE IGNITION PCB

Next: !p403, !f404

TEMPERATURE FLOW (OVERHEAT)

Next: p565, !f550

INSPECTION PRESSURE SYSTEM

Next: p516, ?727, ?729

PUMP LIMPET TEST

Next: p760, !f415

INSPECTION EXTERNAL BYPASS

Next: !p549, !f772

INSPECTION THERMOSTAT CONTROL KNOB

Next: p419, !f420

RESISTANCE THERMOSTAT

{GAINPCBACS}
DISCONNECT GREY LEADS AT THE THERMOSTAT

Next: !p449, !f422

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p50, f389

INSPECTION ISOLATION VALVES

Next: p249, !f465

PRESSURE EXPANSION VESSEL

DRAIN BOILER'S PRIMARY CIRCUIT
ATTACH FOOT PUMP TO SCHRADER VALVE ON EXPANSION VESSEL

Next: !p468, !f469

RESISTANCE FAN AND HARNESS (FUSE INVESTIGATION)

{GAINPCBACS}
DISCONNECT CN200 FROM THE IGNITION PCB

Next: p352, f497

RESISTANCE HARNESS PUMP

DISCONNECT CONNECTOR ON THE PUMP

Next: !p51, !f53

RESISTANCE FAN AND HARNESS (FUSE INVESTIGATION)

{GAINPCBACS}
DISCONNECT CN200 FROM THE IGNITION PCB

Next: p336, f510

INSPECTION ISOLATION VALVES

Next: p412, !f522

INSPECTION SPARK ELECTRODES GAP

Next: p123, !f535

RESISTANCE THERMOSTAT (AT TEMPERATURE)

{GAINPCBACS}
DISCONNECT WHITE LEADS AT THE THERMOSTAT

Next: p410, !f546

INSPECTION THERMOSTAT FITMENT

Next: p536, !f577

RESISTANCE OVERHEAT THERMOSTAT AND HARNESS (INVESTIGATION)

DISCONNECT INLINE CO

Next: !p579, f697

RESISTANCE OVERHEAT THERMOSTAT AND HARNESS (INVESTIGATION)

DISCONNECT INLINE CO

Next: !p582, f700

NO POWER FURTHER INVESTIGATION

THE INFORMATION PROV

Next: !p585, !f586

RESISTANCE THERMOSTAT AND HARNESS

DISCONNECT CN101 FROM THE CONTROL PCB

Next: p69, f66

INSPECTION FLUE

Next: p86, !f605

INSPECTION FAN VENTURI

REMOVE FAN AND FAN VENTURI

Next: !p62, !f63

INSPECTION PRESSURE SYSTEM

Next: p35, ?707, ?709

RESISTANCE RESET SWITCH

Next: !p658, !f659

PRESSURE BURNER (CROSS LIGHTING / ESTABLISH)

DISCONNECT COMPENSAT

Next: p676, f677

INSPECTION DETECTION ELECTRODE AND LEAD

REMOVE ELECTRODE COV

Next: p680, !f681

INSPECTION BURNER

REMOVE ELECTRODE COVER (2X SCREWS) THEN
INNER COMBUSTION COVER (5X SCREWS)

Next: p682, !f683

INSPECTION INJECTORS

REMOVE BURNER ASSEMBLY

Next: p703, !f685

VOLTAGE DEMAND IGNITION PCB AT IGNITION PCB

Next: p71, f386

TEMPERATURE AMBIENT

Next: p25, !f24

RESISTANCE HARNESS DETECTION LEAD

{GAINPCBACS}
DISCONNECT INLINE CONNECTOR FOR FLAME DETECTION ELECTRODE

Next: !p704, !f705

RESISTANCE HARNESS FAN

DISCONNECT CN200 FROM THE IGNITION PCB

Next: !p72, !f73

INSPECTION FAN FREE TO TURN

Next: p596, !f750

INSPECTION HEAT EXCHANGER

REMOVE ELECTRODE COVER (2X SCREWS) THEN INNER COMBUSTION COVER (5X SCREWS)

Next: p753, !f754

INSPECTION BURNER

REMOVE ELECTRODE COVER (2X SCREWS) THEN
INNER COMBUSTION COVER (5X SCREWS)

Next: !p755, !f756

OBSERVATION IS EXTERNAL BYPASS FITTED

Next: p414, f767

OBSERVATION SPARKING AT SPARK GENERATOR

DISCONNECT LEADS FRO

Next: p102, f105

INSPECTION BURNER

REMOVE ELECTRODE COVER (2X SCREWS) THEN
INNER COMBUSTION COVER (5X SCREWS)

Next: !p784, !f785

PRESSURE GAS INLET

ATTACH A PRESSURE GA

Next: p122, !f821

DIFFERENTIAL AIR PRESSURE SWITCH

ATTACH BOTH +VE AND

Next: p83, f85

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: !p833, !f834

RESISTANCE GAS VALVE

UNPLUG HARNESS / SPARK GENERATOR FROM THE GAS VALVE

Next: !p831, !f832

RESISTANCE APS WITH KIT

DISCONNECT WIRES AND

Next: p94, !f95

VOLTAGE SUPPLY TO EXTERNAL CONTROLS AT TERMINAL BLOCK

GAIN ACCESS TO BOILER TERMINAL BLOCK

Next: !p840, f843

INSPECTION EXTERNAL BYPASS

Next: !p850, !f851

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT CN102 FROM THE CONTROL PCB

Next: p340, f858

INSPECTION FAN VENTURI

REMOVE FAN AND FAN VENTURI

Next: p189, !f89

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT CN102 FROM THE CONTROL PCB

Next: p356, f867

PRESSURE GAS INLET

ATTACH A PRESSURE GA

Next: !p1012, !f879

PRESSURE GAS INLET

ATTACH A PRESSURE GA

Next: p908, !f885

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT CN102 FROM THE CONTROL PCB

Next: !p1011, f926

VOLTAGE MAINS OUT AT TERMINAL BLOCK

GAIN ACCESS TO BOILER TERMINAL BLOCK

Next: p10, f17

VOLTAGE GAS VALVE MODUREG

{GAINPCBACS}
ENSURE BOILER IS COOL

Next: p884, f916

PRESSURE BURNER (CH COOL)

ATTACH A PRESSURE GAUGE TO THE BURNER PRESSURE TEST POINT

Next: p783, !f925

INSPECTION THERMOSTAT FITMENT

Next: p934, !f935

RESISTANCE THERMOSTAT (AT TEMPERATURE)

{GAINPCBACS}
DISCONNECT WHITE LEADS AT THE THERMOSTAT

Next: !p936, !f937

INSPECTION THERMOSTAT FITMENT

Next: !p942, !f943

RESISTANCE APS AND HARNESS WITH KIT

{GAINPCBACS}
REFI

Next: !p96, !f97

PRESSURE BURNER (CROSS LIGHTING / ESTABLISH)

DISCONNECT COMPENSAT

Next: p965, f983

INSPECTION BURNER

REMOVE ELECTRODE COVER (2X SCREWS) THEN
INNER COMBUSTION COVER (5X SCREWS)

Next: p977, !f978

INSPECTION INJECTORS

REMOVE BURNER ASSEMBLY

Next: p979, !f980

ADJUSTMENT GAS VALVE SOFT LIGHT PRESSURE

REMOVE DUST CAP FROM

Next: !p981, !f982

VOLTAGE GAS VALVE MODUREG (CROSS LIGHTING / ESTABLISH)

{GAINPCBACS}
ENSURE BOILER IS COOL

Next: p986, f987

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT CN102 FROM THE CONTROL PCB

Next: !p1009, f993

VOLTAGE GAS VALVE MODUREG (CROSS LIGHTING / ESTABLISH)

{GAINPCBACS}
ENSURE BOILER IS COOL

Next: p998, f999

RESISTANCE GAS VALVE MODUREG AND HARNESS

DISCONNECT CN102 FROM THE CONTROL PCB

Next: !p1010, f1005

System Information

  • Total Tests: 350
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control