XSol Diagnostic System

WORCESTER GREENSTAR RI ERP (WITH TRANSFORMER)

GLOBALLY REPLACED

Next: &1, *

NO FAULT FOUND

Next: nff

WORCESTER GREENSTAR RI ERP (WITH TRANSFORMER)

Next: &504, !f2

POWER UP

Next: &2613, f4

OBSERVATION BURNER IGNITES AND ESTABLISHES

ENSURE THE APPLIANCE IS COOL (BELOW 40°C)
BOILER THERMOSTAT SET TO MAX

Next: &1440, ?67, ?424, ?838, ?1737

CH OPERATION

Next: &2186, ?203, ?205, ?207

OVERRUNS

Next: &1131, ?1764, ?1766

FAULT CODES

Next: &nff, !f797

SERVICE MODE SWITCH IN MAX POSITION

Next: &nff, !f2225

SERVICE MODE SWITCH IN MIN POSITION

Next: &nff, !f2224

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &3, !f505

COMBUSTION SETTINGS HIGH AND LOW

Next: &82, ?1468, ?1472

INSPECTION CONDENSATE TRAP OPERATION

UNSCREW CONTROL PANEL AND HOOK ON LOWER HOOKS SO CONDENSATE TRAP IS VISIBLE

Next: &nff, !f1132

PRESSURE FAN MAXIMUM

{GAINPCBACS}
CONNECT A PRESSURE GAUGE TO THE FAN PRESSURE TEST POINT

Next: &1439, f1871

PRESSURE GAS INLET MAX

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: &920, !f1448

OBSERVATION PUMP RUNS

Next: &1438, f1449

FURTHER INVESTIGATION FUSE BLOWN (PCB FUSES)

OUTSIDE MODEL

Next: &nff, f1997

FAULT CODE SLOW FLASH NORMALLY ON FLASH OFF (OVERHEAT)

OUTSIDE MODEL

Next: &nff, f1793

FURTHER INVESTIGATION FUSE BLOWN (MAINS FUSE)

OUTSIDE MODEL

Next: &nff, f2052

OPERATION DHW

Next: &84, ?2187, ?2189

FAULT CODE FAST FLASH (VOLATILE LOCK OUT)

OUTSIDE MODEL

Next: &nff, f2227

OBSERVATION FAN RUNS

ENSURE THE APPLIANCE IS COOL (BELOW 40°C)
BOILER THERMOSTAT SET TO MAX

Next: &62, f2614

INFORMATION FAN PCB REMOVAL

Next: &nff, !f2661

BURNER IGNITES BUT DOES NOT ESTABLISH

FLUE

Next: End

BURNER DOES NOT EST

ELECTRODE ASSEMBLY

Next: End

BOILER DOES NOT RAMP UP

Next: End

CALIBRATION LOW BOILER DOES NOT RAMP UP

SENSOR - PRIMARY (CONTROL)

Next: End

BLANK DISPLAY

CABLE FAN CONNECTOR ASSEMBLY

Next: End

NOT DUMPING

CONDENSATE TRAP

Next: End

BURNER DOES NOT IGNITE PRESSURE DROPS

GAS VALVE INLET PRESSURE

Next: End

LOW

GAS VALVE INLET PRESSURE

Next: End

NO POWER TO PUMP

PCB

Next: End

BREACHED GASES MIXING

FLUE

Next: End

BLOCKED OR SPLIT BAFFLING

GAS SUPPLY TUBE

Next: End

BURNER IGNITES

HARNESS - MAINS

Next: End

BLOCKED OR SPLIT NO INLET DROP

GAS SUPPLY TUBE

Next: End

BLOCKED OR SPLIT DOES NOT ESTABLISH

GAS SUPPLY TUBE

Next: End

BLOCKED OR SPLIT DROPS ON MINIMUM

GAS SUPPLY TUBE

Next: End

BLOCKED OR SPLIT COMB SETTINGS INCORRECT

GAS SUPPLY TUBE

Next: End

OVERHEAT INVESTIGATION

FLUE

Next: End

OVERHEAT

SYSTEM PRESSURE

Next: End

OVERHEAT NO POWER TO PUMP

PCB

Next: End

OVERHEAT RUNNING SLOW

PUMP

Next: End

OVERHEAT

Next: End

OVERHEAT

SENSOR - PRIMARY (CONTROL)

Next: End

OVERHEAT

SYSTEM RESTRICTION OR BLOCKAGE

Next: End

COMBUSTION INCORRECT

FLUE / BURNER SEALS

Next: End

COMBUSTION INCORRECT 2

FLUE / BURNER SEALS

Next: End

COMBUSTION FAIL

FLUE

Next: End

BLOCKED OR SPLIT LOW FAN PRESSURE

GAS SUPPLY TUBE

Next: End

LOW FAN PRESSURE MAXIMUM

BURNER

Next: End

FAN PRESSURE

CONDENSATE TRAP

Next: End

OVERHEAT

FLUE / BURNER SEALS

Next: End

BURNERIGNITES

HARNESS - MAINS

Next: End

RECTIFICATION VOLTAGE

PCB

Next: End

UNSATISFACTORY CHECKS

Z BLANKS

Next: End

NOT ESTABLISHING

CONDENSATE TRAP

Next: End

FAILING FGA

CONDENSATE TRAP

Next: End

DROPS OUT IN MINIMUM

CONDENSATE TRAP

Next: End

CH OPERATION - NOISY

SYSTEM PRESSURE

Next: End

CH OPERATION - UP TO TEMP RADS COLD

SYSTEM PRESSURE

Next: End

CH OPERATION - BOILER AND RADIATORS ONLY GET WARM

SYSTEM PRESSURE

Next: End

SERVICE MODE IN MIN POSITION

PCB

Next: End

SERVICE MODE IN MAX POSITION

PCB

Next: End

VOLATILE LOCKOUT FAN RUNS 1 - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

VOLATILE LOCKOUT FAN RUNS 1 - NEW STYLE FAN

PCB

Next: End

VOLATILE LOCKOUT FAN RUNS - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FAN RUNS1 FAULT CODE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FAN VOLTAGE PCB1 FAULT CODE

PCB

Next: End

FAN DOES NOT RUN1 FAULT CODE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FAN RUNS1 FAULT CODE

FAN

Next: End

FAN DOES NOT RUNFAULT CODE

CODE PLUG

Next: End

FAN DOES NOT RUN 1FAULT CODE

SENSOR - PRIMARY (CONTROL)

Next: End

VOLATILE LOCKOUT BETWEEN 125 VAC AND 135 VAC - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

VOLATILE LOCKOUT ABOVE 135 VAC - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

VOLATILE LOCKOUT STSLOW THEN TO TO HIGH SPEED - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

VOLATILE LOCKOUT BETWEEN 125 VAC AND 135 VAC

CABLE FAN CONNECTOR ASSEMBLY

Next: End

VOLATILE LOCKOUT ABOVE 135 VAC

CABLE FAN CONNECTOR ASSEMBLY

Next: End

VOLATILE LOCKOUT SLOW THEN TO HIGH SPEED

FAN

Next: End

BLOWN STAND BY MODE

FUSE (FUSED SPUR)

Next: End

VOLATILE LOCKOUT STSLOW THEN TO TO HIGH SPEED

CABLE FAN CONNECTOR ASSEMBLY

Next: End

VOLATILE LOCKOUT BELOW 124 VAC

FAN

Next: End

BURNER IGNITES BUT NOT ESTABLISH

FLUE

Next: End

DOES NOT ESTABLISH

BURNER

Next: End

BETWEEN 125 VAC AND 135 VAC - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

ABOVE 135 VAC - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

STSLOW THEN TO TO HIGH SPEED - NEW STYLE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

BETWEEN 125 VAC AND 135 VAC

CABLE FAN CONNECTOR ASSEMBLY

Next: End

ABOVE 135 VAC

CABLE FAN CONNECTOR ASSEMBLY

Next: End

SLOW THEN TO HIGH SPEED

FAN

Next: End

STSLOW THEN TO TO HIGH SPEED

CABLE FAN CONNECTOR ASSEMBLY

Next: End

BELOW 124 VAC

FAN

Next: End

FAN RUNS

AIR PRESSURE SWITCH

Next: End

FAN RUNS

LIMITER 120DEG C - TEMPERATURE

Next: End

FAN RUNS

SENSOR FLUE OVERHEAT

Next: End

NOT IGNITING

CONDENSATE TRAP

Next: End

FAN RUNS - HIGH RESIST

AIR PRESSURE SWITCH

Next: End

FAN RUNS - HIGH RESIST

LIMITER 120DEG C - TEMPERATURE

Next: End

FAN RUNS - HIGH RESIST

SENSOR FLUE OVERHEAT

Next: End

FAN RUNS BURNER DOES NOT IGNITE BURNER IGNITES BUT NOT ESTABLISH

FLUE

Next: End

FAN RUNS BURNER DOES NOT IGNITE

BURNER

Next: End

BURNER IGNITES

LEAD- IGNITION

Next: End

BURNER DOES NOT IGNITE

GAS SUPPLY TUBE

Next: End

BURNER IGNITES

ELECTRODE ASSEMBLY

Next: End

DOES NOT IGNITE PRESSURE DROPS

BURNER

Next: End

DOES NOT IGNITE

HEAT EXCHANGER PRIMARY FLUE WAYS

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT - LOW PRESSURE

CONDENSATE TRAP

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

FLUE

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT 3

GAS SUPPLY TUBE

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

BURNER

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

GAS VALVE INLET PRESSURE

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT - POOR SPARK

PCB

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

CONDENSATE TRAP

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT- HIGH RESIST

LIMITER - TEMPERATURE (CORROSION)

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT 2

GAS SUPPLY TUBE

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

HARNESS - MAINS

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

LEAD- IGNITION

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

ELECTRODE ASSEMBLY

Next: End

INTERMITTENT IGNITION FAILING FGA

CONDENSATE TRAP

Next: End

INTERMITTENT IGNITION BLOCKED OR SPLIT COMB SETTINGS INCORRECT

GAS SUPPLY TUBE

Next: End

INTERMITTENT IGNITION COMBUSTION INCORRECT

FLUE / BURNER SEALS

Next: End

INTERMITTENT IGNITION BREACHED GASES MIXING

FLUE

Next: End

INTERMITTENT IGNITIONDROPS OUT IN MINIMUM

CONDENSATE TRAP

Next: End

INTERMITTENT IGNITIONBLOCKED OR SPLIT DROPS ON MINIMUM

GAS SUPPLY TUBE

Next: End

INTERMITTENT IGNITIONCOMBUSTION INCORRECT 2

FLUE / BURNER SEALS

Next: End

INTERMITTENT IGNITIONCOMBUSTION FAIL

FLUE

Next: End

FAULT CODE OVERHEAT WILL NOT RESET

AIR PRESSURE SWITCH

Next: End

FAULT CODE OVERHEAT WILL NOT RESET

LIMITER 120DEG C - TEMPERATURE

Next: End

FAULT CODE OVERHEAT WILL NOT RESET

SENSOR FLUE OVERHEAT

Next: End

DOES NOT RUN1 FAULT CODE

FAN

Next: End

BURNER DOES NOT IGNITES PRESSURE DROPS MAXIMUM

FLUE

Next: End

OVERHEAT TRIPPING EARLY

LIMITER 120DEG C - TEMPERATURE

Next: End

240V SUPPLY

Next: End

NO POWER ON BROWN AND PURPLE - NEW STYLE FAN

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FAN RUNS - NEW STYLE FAN

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FAN DOES NOT RUN - NEW STYLE FAN

CODE PLUG

Next: End

FAN RUNS - NEW STYLE FAN

SENSOR - PRIMARY (CONTROL)

Next: End

NOT RUNNING FAN - NEW STYLE FAN

PCB

Next: End

FAN DOES NOT RUN FAN VOLTAGE OK - NEW STYLE FAN

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FAN RUNS

CABLE FAN CONNECTOR ASSEMBLY

Next: End

DOES NOT RUN

FAN

Next: End

FAN DOES NOT RUN

CODE PLUG

Next: End

FAN RUNS

SENSOR - PRIMARY (CONTROL)

Next: End

NOT RUNNING FAN

PCB

Next: End

FAN DOES NOT RUN FAN VOLTAGE OK

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FAN DOEDS NOT RUN

FAN

Next: End

INFORMATION FAN PCB REMOVAL

Z BLANKS

Next: End

BAFFLING

FLUE

Next: End

LOW FAN PRESSURE BAFFLING

BURNER

Next: End

FURTHER INVESTIGATION FUSE F1 FURTHER INVESTIGATION MAINS FUSE

PUMP

Next: End

FUSE INVESTIGATION - INCOMPATIBLE SIT MAINS FUSE

FAN

Next: End

FURTHER INVESTIGATION FUSE F1 SIT MAINS FUSE

FAN

Next: End

FURTHER INVESTIGATION FURTHER INVESTIGATION MAINS FUSE

TRANSFORMER

Next: End

FUSE INVESTIGATION - INCOMPATIBLE BLOWING SWITCHED ON SIT MAINS FUSE

FAN

Next: End

FURTHER INVESTIGATION FUSE F1 BLOWING SWITCHED ON SIT MAINS FUSE

FAN

Next: End

FURTHER INVESTIGATION MAINS FUSE

GAS VALVE

Next: End

FURTHER INVESTIGATION FUSE F1 FURTHER INVESTIGATION

PUMP

Next: End

FUSE INVESTIGATION - INCOMPATIBLE SIT

FAN

Next: End

FURTHER INVESTIGATION FUSE F1 SIT

FAN

Next: End

FURTHER INVESTIGATION FURTHER INVESTIGATION

TRANSFORMER

Next: End

FUSE INVESTIGATION - INCOMPATIBLE BLOWING SWITCHED ON SIT

FAN

Next: End

FURTHER INVESTIGATION FUSE F1 BLOWING SWITCHED ON SIT

FAN

Next: End

FURTHER INVESTIGATION

GAS VALVE

Next: End

BOILR SHUTS DOWN PREMATURELY BOILER NOISY

PUMP

Next: End

BOILER SHUTS DOWN PREMATURLEY BOILER NOISE

Next: End

FAN RUNS LOW BOILER GOES TO OVERHEAT BOILER NOISEY

SENSOR - PRIMARY (CONTROL)

Next: End

CH OPERATION

Next: End

BOILER TO TEMP RADS COOL

PUMP

Next: End

FOR TYPE DIAG PROCEDURE

Z BLANKS

Next: End

BLOWN STANDBY MODE

FUSE MAIN PCB F1

Next: End

BLOWN STANDBY MODE

FUSE MAIN PCB F2

Next: End

COIL FAULT STANDBY

TRANSFORMER

Next: End

POWER UP FAN RUNS

Next: End

NOISE BOILER

CONDENSATE TRAP

Next: End

FAULT CODE

Z BLANKS

Next: End

BURNER BAFFLING OUT

CONDENSATE TRAP

Next: End

BURNER BAFFLING OUT

GAS VALVE INLET PRESSURE

Next: End

FOR LED FURTHER INVESTIGATION

Z BLANKS

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

GAS VALVE INLET PRESSURE

Next: End

BURNER DOES NOT ESTABLISH

PCB

Next: End

CH OPERATION

Next: End

BLANK DISPLAY

FAN

Next: End

PUMP

Next: End

PUMP WIRING

Next: End

UNABLE TO SET

GAS VALVE

Next: End

SUPPLY FAULT

Next: End

BURNER IGNITES

GAS VALVE

Next: End

NO POWER TO GAS VALVE

PCB

Next: End

OVERRUN FUNCTION

PCB

Next: End

OVERRUN - RUNS WITH NO DEMAND

PCB

Next: End

OVERRUNS FIRES WITH NO DEMAND

Next: End

OVERRUN FIRES WITH NO DEMAND

CAPACITOR

Next: End

FAULT CODE OVERHEAT STUCK IN FAULT CODE

PCB

Next: End

OVERHEAT NOT RUNNING

PUMP

Next: End

OVERHEAT

PUMP WIRING

Next: End

OVERHEAT

PCB

Next: End

DROPPING OUT ON MINIMUM

GAS VALVE

Next: End

BURNER DOES NOT IGNITE PRESSURE DROPS MAXIMUM

HEAT EXCHANGER PRIMARY FLUE WAYS

Next: End

FUSE MAINS

Z BLANKS

Next: End

OVERHEAT NO FAULT FOUND

NORMAL OPERATION

Next: End

BAFFLING

GAS VALVE BASE SETTINGS

Next: End

OPERATION DHW UNSATISFACTORY

Next: End

BOILER DOES NOT RAMP UP

PCB

Next: End

VOLATILE LOCKOUT FAN RUNS - NEW STYLE FAN

PCB

Next: End

VOLATILE LOCKOUT FAN RUNS 1- NEW STYLE

FAN

Next: End

VOLATILE LOCKOUT FAN RUNS - NEW STYLE

FAN

Next: End

FAN DOES NOT RUN1 FAULT CODE

PCB

Next: End

FAN RUNS1 FAULT CODE

FAN PCB

Next: End

FAN DOES NOT RUN 1FAULT CODE

PCB

Next: End

FAN DOES NOT RUNFAULT CODE

HARNESS - MAINS

Next: End

VOLATILE LOCKOUT FAN REDUCES AND STOPS - NEW STYLE

PCB

Next: End

VOLATILE LOCKOUT SLOW THEN TO HIGH SPEED - NEW STYLE

FAN

Next: End

VOLATILE LOCKOUT BELOW 124 VAC - NEW STYLE

FAN

Next: End

VOLATILE LOCKOUT FAN REDUCES AND STOPS

PCB

Next: End

VOLATILE LOCKOUT SLOW THEN TO HIGH SPEED

FAN PCB

Next: End

VOLATILE LOCKOUT BELOW 124 VAC

FAN PCB

Next: End

NO PRESSURE BAFFLING

FAN MEMBRANE

Next: End

BAFFLING - PRESSURE OK

FAN

Next: End

BURNER DOES NOT IGNITE

FAN MEMBRANE

Next: End

BURNER DOES NOT IGNITE

FAN

Next: End

BURNER DOES NOT EST

HEAT EXCHANGER PRIMARY FLUE WAYS

Next: End

FAN REDUCES AND STOPS - NEW STYLE

PCB

Next: End

SLOW THEN TO HIGH SPEED - NEW STYLE

FAN

Next: End

BELOW 124 VAC - NEW STYLE

FAN

Next: End

FAN REDUCES AND STOPS

PCB

Next: End

SLOW THEN TO HIGH SPEED

FAN PCB

Next: End

BELOW 124 VAC

FAN PCB

Next: End

SAFETY CIRCUIT

HARNESS - MAINS

Next: End

SAFETY CIRCUIT - HIGH RESIST

HARNESS - MAINS

Next: End

FAN RUNS BURNER DOES NOT IGNITE

FAN MEMBRANE

Next: End

FAN RUNS BURNER DOES NOT IGNITE

FAN

Next: End

FAN RUNS BURNER DOES NOT IGNITE

HEAT EXCHANGER PRIMARY FLUE WAYS

Next: End

NOT IGNITING WITH DROP

FAN MEMBRANE

Next: End

NOT IGNITING WITH DROP

FAN

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT NO DROP

FAN MEMBRANE

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT NO DROP

FAN

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT 2

HEAT EXCHANGER PRIMARY FLUE WAYS

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT

NO FAULT INTERMITTENT IGNITION

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT WITH DROP

FAN MEMBRANE

Next: End

DHW BURNER IGNITION ESTABLISH - INTERMITTENT DROP

FAN

Next: End

INTERMITTENT IGNITION UNABLE TO SET

GAS VALVE

Next: End

INTERMITTENT IGNITIONDROPPING OUT ON MINIMUM

GAS VALVE

Next: End

FAN RUNS BURNER DOES NOT IGNITE - NO PRESSURE DROP

LIMITER - TEMPERATURE (CORROSION)

Next: End

FAN RUNS BURNER DOES NOT IGNITE - NO SPARKING

LIMITER - TEMPERATURE (CORROSION)

Next: End

OVERHEAT INVESTIGATION

LIMITER - TEMPERATURE (CORROSION)

Next: End

FAULT CODE OVERHEAT

HARNESS - MAINS

Next: End

DOES NOT RUN1 FAULT CODE

FAN PCB

Next: End

PRESSURE FAN MAXIMUM

FAN MEMBRANE

Next: End

PRESSURE FAN MAXIMUM

FAN

Next: End

OPERATION DHW

Next: End

WRONG MIX BAFFLING

GAS VALVE

Next: End

OVERHEAT TRIPPING EARLY

SENSOR FLUE OVERHEAT

Next: End

FAN RUNS FAN VOLTAGE - NEW STYLE FAN

PCB

Next: End

DOES NOT RUN - NEW STYLE FAN

FAN

Next: End

FAN RUNS - NEW STYLE FAN

HARNESS - MAINS

Next: End

FAN DOEDS NOT RUN - NEW STYLE FAN

FAN

Next: End

FAN RUNS FAN VOLTAGE

PCB

Next: End

FAN DOES NOT RUN - MISSING VOLTAGES

FAN PCB

Next: End

FAN RUNS

HARNESS - MAINS

Next: End

FAN DOES NOT RUN - IGNORING DEMAND

FAN PCB

Next: End

CH NOISY

SYSTEM RESTRICTION OR BLOCKAGE

Next: End

BAFFLES - LOW PRESSURE

FAN MEMBRANE

Next: End

FAULTY PROPELLER BAFFLING

FAN

Next: End

BURNER DOES NOT IGNITE PRESSURE DROPS BAFFLING

HEAT EXCHANGER PRIMARY FLUE WAYS

Next: End

FURTHER INVESTGATION FUSE - SIT VALVE MAINS FUSE

PUMP WIRING

Next: End

FURTHER INVESTIGATION FUSE F1 FURTHER INVESTIGATION MAINS FUSE

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FUSE INVESTIGATION SIT MAINS FUSE

FAN PCB

Next: End

FUSE FURTHER INVESTIGATION 2

MAINS FUSE BLOWN - FURTHER INVESTIGATION

Next: End

FUSE INVESTIGATION BLOWING SWITCHED ON SIT MAINS FUSE

FAN PCB

Next: End

GAS VALVE BURNER IGNITES 1FURTHER INVESTIGATION MAINS FUSE

HARNESS - MAINS

Next: End

FURTHER INVESTGATION FUSE - SIT VALVE

PUMP WIRING

Next: End

FURTHER INVESTIGATION FUSE F1 FURTHER INVESTIGATION

CABLE FAN CONNECTOR ASSEMBLY

Next: End

FUSE INVESTIGATION SIT

FAN PCB

Next: End

FURTHER INVESTIGATION FURTHER INVESTIGATION

PCB (FUSE INVESTIGATION)

Next: End

FUSE INVESTIGATION BLOWING SWITCHED ON SIT

FAN PCB

Next: End

GAS VALVE BURNER IGNITES 1FURTHER INVESTIGATION

HARNESS - MAINS

Next: End

LED

PCB

Next: End

FUSE F1 APPLIANCE

Z BLANKS

Next: End

FUSE F2 APPLIANCE

Z BLANKS

Next: End

STANDBY

PCB

Next: End

COMBUSTION SETTINGS INCORRECT

CHARACTERISTIC TEST FROM COMBUSTION SETTINGS HIGH AND LOW

Next: p2089

BURNER DROPS OUT IN MINIMUM OUTPUT MODE

CHARACTERISTIC TEST FROM COMBUSTION SETTINGS HIGH AND LOW

Next: p2097

BURNER DOES NOT IGNITE SMOOTHLY / INTERMITTENT IGNITION

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p2501

FAN / PUMP DO NOT OVERRUN AS ABOVE

CHARACTERISTIC TEST FROM OVERRUNS

Next: !p1765

BOILER CONTINUES RUNNING, CHATTERS, OR FIRES WITH NO DEMAND INTEMITTENTLY

CHARACTERISTIC TEST FROM OVERRUNS

Next: p1767

MAINS VOLTAGE PRESENT

CHARACTERISTIC TEST FROM VOLTAGE BOILER SWITCHED LIVE (NO DEMAND)

Next: !p1771

VOLTAGE PRESENT BUT LOW (APPROX 60-100V)

CHARACTERISTIC TEST FROM VOLTAGE BOILER SWITCHED LIVE (NO DEMAND)

Next: !p1773

TEMPERATURE ABOVE 90°C AND BOILER STILL FIRED

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO MAX TEMP - DOES OVERHEAT OCCUR

Next: !p1843

BOILER RETURNS TO FAULT CODE, TEMPERATURE 90°C OR BELOW

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO MAX TEMP - DOES OVERHEAT OCCUR

Next: p2610

BOILER NOISY DURING OPERATION

CHARACTERISTIC TEST FROM CH OPERATION

Next: p2197

BOILER REACHES TEMPERATURE, RADS DO NOT HEAT OR ONLY GET WARM

CHARACTERISTIC TEST FROM CH OPERATION

Next: p2214

BOILER CONTINUES TO FIRE BUT RADIATORS ONLY GET WARM

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1101

BOILER DOES NOT RESPOND TO DHW DEMAND

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p2605

DHW OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p2190

FAST FLASH (VOLATILE LOCKOUT) DISPLAYED WITHIN 10 SECONDS

CHARACTERISTIC TEST FROM OBSERVATION BLUE LED - FAULT CODE

Next: p2230

FAST FLASH (VOLATILE LOCKOUT) DISPLAYED AFTER MORE THAN 20 SECONDS, FAN DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION BLUE LED - FAULT CODE

Next: p2232

240 VOLTS ABSENT BETWEEN PURPLE/BROWN

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: !p2237

240 VOLTS PRESENT BETWEEN PURPLE/BROWN BUT OTHERS NOT AS ABOVE

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: p2239

240 VOLTS ABSENT BETWEEN PURPLE/BROWN

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: !p2249

240 VOLTS PRESENT BETWEEN PURPLE/BROWN BUT OTHERS NOT AS ABOVE

CHARACTERISTIC TEST FROM VOLTAGE FAN (AT PCB)

Next: p2251

VOLTAGE ABOVE 120 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB) - NEW STYLE

Next: p2278

VOLTAGE BETWEEN 110 VAC AND 120 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB) - NEW STYLE

Next: p2280

VOLTAGE ABOVE 135 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB)

Next: p2290

VOLTAGE BETWEEN 124 VAC AND 135 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB)

Next: p2292

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2313

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2315

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2334

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2336

VOLTAGE ABOVE 120 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB) - NEW STYLE

Next: p2364

VOLTAGE BETWEEN 110 VAC AND 120 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB) - NEW STYLE

Next: p2366

VOLTAGE ABOVE 135 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB)

Next: p2376

VOLTAGE BETWEEN 124 VAC AND 135 VAC

CHARACTERISTIC TEST FROM FAN VOLTAGE CONTROL (PCB)

Next: p2378

FLUE STAT CORRODED, DAMAGED, OR MOISTURE PRESENT

CHARACTERISTIC TEST FROM RESISTANCE SAFETY CIRCUIT

Next: !p2569

RESISTANCE NOT AS EXPECTED

CHARACTERISTIC TEST FROM RESISTANCE SAFETY CIRCUIT

Next: p2393

FLUE STAT CORRODED, DAMAGED, OR MOISTURE PRESENT

CHARACTERISTIC TEST FROM RESISTANCE SAFETY CIRCUIT

Next: !p2568

RESISTANCE NOT AS EXPECTED

CHARACTERISTIC TEST FROM RESISTANCE SAFETY CIRCUIT

Next: p2459

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2472

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2474

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2486

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2488

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2513

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2515

BURNER DROPS OUT IN MINIMUM MODE

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: p2559

CO2 SETTINGS INCORRECT

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: p2550

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2547

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2549

FLUE STAT CORRODED, DAMAGED, OR MOISTURE PRESENT

CHARACTERISTIC TEST FROM RESISTANCE SAFETY CIRCUIT

Next: !p2571

RESISTANCE NOT AS EXPECTED

CHARACTERISTIC TEST FROM RESISTANCE SAFETY CIRCUIT

Next: p2574

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2602

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2604

240 VOLTS ACROSS PURPLE BROWN OTHERS NOT AS ABOVE

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: p2621

240 VOLTS ACROSS PURPLE/BROWN ABSENT

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: p2623

240 VOLTS ACROSS PURPLE BROWN OTHERS NOT AS ABOVE

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: p2641

240 VOLTS ACROSS PURPLE/BROWN ABSENT

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2643

FAN MEMBRANE DAMAGED OR WORN

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2731

FAN STIFF TO TURN OR SEIZED

CHARACTERISTIC TEST FROM INSPECTION FAN MEMBRANE

Next: !p2733

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p1135

BURNER IGNITES SMOOTHLY, BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p888

BURNER IGNITES BUT IS NOISY AND/OR BAFFLES OUT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITES AND ESTABLISHES

Next: p839

09/12/2020 07:43:54 2011_1_50_1 04/01/2021 11:17:19

09/12/2020 16:30:30

Next: End

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p1119, !f1120

VOLTAGE PUMP

REMOVE COVER FROM PUMP ASSEMBLY

Next: !p1450, f1451

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1452, !f1453

RESISTANCE SAFETY CIRCUIT

DISCONNECT CONNECTOR FROM ST9 ON THE PCB

Next: p1610, ?2456, ?2458

RESISTANCE MAINS FUSE

REMOVE FUSE FROM FUSED SPUR

Next: !p16, f18

RESISTANCE GAS VALVE HARNESS

REMOVE THE CONNECTOR

Next: !p1629, !f1630

OBSERVATION BOILER RESET OVERHEAT FAULT

ENSURE APPLIANCE IS COOL

Next: p1794, f1795

RESISTANCE SAFETY CIRCUIT

DISCONNECT CONNECTOR FROM ST9 ON THE PCB

Next: p1796, ?2570, ?2572

FUSE FURTHER INVESTIGATION (MAINS)

Next: !p19, !f23

VOLTAGE PUMP

REMOVE COVER FROM PUMP ASSEMBLY

Next: !p1810, f1811

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1812, !f1813

CONDENSATE

Next: p2584, !f1881

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: !p2607, ?2312, ?2314

RESISTANCE - SIT GAS VALVE AND HARNESS - FURTHER INVESTIGATION

REMOVE ST5 CONNECTOR FROM THE PCB

Next: p2760, f2781

RESISTANCE - SIT GAS VALVE AND HARNESS - FURTHER INVESTIGATION

REMOVE ST5 CONNECTOR FROM THE PCB

Next: p2736, f2757

OBSERVATION BLUE LED - FAULT CODE

ON / OFF SWITCH TURNED TO OFF

Next: p2228, ?2229, ?2231

VOLTAGE FAN (AT PCB) - NEW STYLE

ENSURE NO DEMANDS

Next: p2235, ?2236, ?2238

RESISTANCE SENSOR TEMP FLOW

DISCONNECT PLUG (RE

Next: !p2268, !f2269

FAN VOLTAGE CONTROL (PCB) - NEW STYLE

{GAINPCBACS}

Next: p2276, ?2277, ?2279

INSPECTION FLUE

Next: p2329, !f2330

RESISTANCE SAFETY CIRCUIT

DISCONNECT CONNECTOR FROM ST9 ON THE PCB

Next: p2348, ?2389, ?2391

FAN VOLTAGE CONTROL (PCB) - NEW STYLE

{GAINPCBACS}

Next: p2362, ?2363, ?2365

INSPECTION FLUE

Next: p2467, !f2468

CONDENSATE

Next: p2504, !f2505

VOLTAGE BOILER SWITCHED LIVE

{GAINPCBACS}

Next: p2615, !f2616

VOLTAGE FAN (AT PCB) - NEW STYLE

ENSURE NO DEMANDS

Next: p2619, ?2620, ?2622

RESISTANCE SENSOR TEMP FLOW

DISCONNECT PLUG (RE

Next: !p2632, !f2633

RESISTANCE SENSOR TEMP FLOW

DISCONNECT PLUG (RE

Next: !p2652, !f2653

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: p2729, ?2730, ?2732

RESISTANCE PUMP

REMOVE COVER FROM PUMP ASSEMBLY
DISCONNECT WIRES FROM PUMP

Next: !p2739, !f2740

RESISTANCE FAN

DISCONNECT FAN CONNECTOR AT FAN

Next: !p2743, f2744

OBSERVATION FAN TYPE

Next: p2745, !f2746

OBSERVATION FAN TYPE

Next: p2753, !f2754

RESISTANCE - SIT GAS VALVE SOLENOIDS

REMOVE THE TWO CONNECTORS FROM THE GAS VALVE

Next: !p2758, !f2759

RESISTANCE PUMP

REMOVE COVER FROM PUMP ASSEMBLY
DISCONNECT WIRES FROM PUMP

Next: !p2763, !f2764

RESISTANCE FAN

DISCONNECT FAN CONNECTOR AT FAN

Next: !p2767, f2768

OBSERVATION FAN TYPE

Next: p2769, !f2770

OBSERVATION FAN TYPE

Next: p2777, !f2778

RESISTANCE - SIT GAS VALVE SOLENOIDS

REMOVE THE TWO CONNECTORS FROM THE GAS VALVE

Next: !p2782, !f2783

MAINS POWER INPUT TO APPLIANCE

{GAINPCBACS}

Next: p488, f15

VOLTAGE BOILER SWITCHED LIVE

{GAINPCBACS}

Next: p570, !f581

FUSE FURTHER INVESTIGATION (F1)

Next: !p573, !f574

FUSE FURTHER INVESTIGATION (F2)

Next: !p577, !f578

ELECTRODE SENSE HARNESS

DISCONNECT FLAME SENSE LEAD FROM ELECTRODE
DISCONNECT CONNECTOR ST9 FROM THE PCB

Next: p1987, !f1955

INSPECTION FLUE

Next: p1082, !f1083

ELECTRODE SENSE

REMOVE THE ELECTRODE ASSEMBLY

Next: !p1084, !f1085

INSPECTION SYSTEM FILLED AND VENTED

Next: p1102, !f2223

BYPASS SYSTEM

Next: p1104, !f1105

RESISTANCE SENSOR TEMP FLOW

DISCONNECT PLUG (RE

Next: !p2222, !f1107

REMOVE FAN CONNECTOR IS BLUE LIGHT STILL OFF

REMOVE FAN CONNECTOR FROM PCB

Next: p575, f1118

SPARKING PRESENT TEST

{GAINPCBACS}
REMO

Next: p2400, f2339

GAS INLET PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p1252, !f1253

PRESSURE GAS INLET DROP

ATTACH U GAUGE TO INLET PRESSURE TEST POINT
ON/OFF SWITCH ON

Next: p2478, f1495

INSPECTION FLUE

Next: !p1475, !f1476

INSPECTION GAS SUPPLY TUBE

Next: p2703, !f1593

FAN PRESSURE-BAFFLING

ATTACH PRESSURE GAUGE TO FAN PRESSURE TEST POINT

Next: p1934, f2728

INSPECTION GAS SUPPLY TUBE

Next: p1613, !f1689

PRESSURE FAN - IGNITION

ATTACH A PRESSURE GAUGE TO THE FAN PRESSURE TEST POINT
ON/OFF SWITCH ON

Next: p1614, f2466

VOLTAGE GAS VALVE

DISCONNECT CONNECTOR

Next: !p1627, f1628

INSPECTION GAS SUPPLY TUBE

Next: p2316, !f1712

INSPECTION GAS SUPPLY TUBE

Next: p1857, !f1736

INSPECTION GAS SUPPLY TUBE

Next: p1865, !f1735

VOLTAGE BOILER SWITCHED LIVE (NO DEMAND)

{GAINPCBACS}

Next: !p1768, ?1770, ?1772

INSPECTION SYSTEM FILLED AND VENTED

Next: p1806, !f1807

INSPECTION FLUE

Next: !p1804, !f1805

OBSERVATION PUMP RUNS

Next: p1808, f1809

PUMP LIMPET TEST

Next: p1814, !f1815

BYPASS SYSTEM

Next: p1816, !f1817

RESISTANCE SENSOR TEMP FLOW

DISCONNECT PLUG (RE

Next: p1882, !f1819

MEASURE HEAT EXCHANGER TEMPERATURE DIFFERENCE

UNSCREW CONTROL BOX

Next: p1840, !f1821

OBSERVATION RUN BOILER TO MAX TEMP - DOES OVERHEAT OCCUR

ATTACH TEMPERATURE CLAMP TO FLOW PIPE
SET BOILER TEMPERATURE CONTROL TO MAX

Next: !p1904, ?1842, ?1844

INSPECTION SEAL INTEGRITY

Next: p1474, !f1861

INSPECTION FLUE

Next: !p1863, !f1870

INSPECTION SEAL INTEGRITY

Next: p1862, !f1869

INSPECTION GAS SUPPLY TUBE

Next: p2596, !f1874

BURNER

REMOVE FAN
REMOVE THE BURNER

Next: !p1875, !f1876

INSPECTION SEAL INTEGRITY

Next: p1818, !f1902

RESET GAS VALVE BASE SETTINGS - BAFFLING

Next: !p1951, f1943

RECTIFICATION VOLTAGE

DISCONNECT FLAME SENSE LEAD (GREEN LEAD) FROM SENSE ELECTRODE AND SECURE IT AS SHOWN

Next: p1078, !f1995

CONDENSATE

Next: p1700, !f2050

PUMP LIMPET TEST

Next: p332, !f353

CONDENSATE

Next: p1729, !f2105

CONDENSATE

Next: p1733, !f2106

INSPECTION SYSTEM FILLED AND VENTED

Next: p321, !f2213

INSPECTION SYSTEM FILLED AND VENTED

Next: p206, !f2220

OBSERVATION FAN TYPE

Next: p2274, f2275

KEYED PLUG

LOWER THE FACIA PANEL

Next: p2264, !f2265

OBSERVATION FAN TYPE

Next: p2233, f2234

VOLTAGE FAN (AT PCB)

ENSURE NO DEMANDS

Next: p2246, ?2248, ?2250

VOLTAGE DEMAND TO FAN FROM PCB

REMOVE THE FAN CONNE

Next: p2242, !f2243

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2240, !f2241

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2244, !f2245

VOLTAGE DEMAND TO FAN FROM PCB

REMOVE THE FAN CONNE

Next: p2258, !f2259

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2581, !f2253

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2260, !f2261

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2262, !f2263

RESISTANCE SENSOR TEMP FLOW AND HARNESS

DISCONNECT CONNECTOR FROM ST9 ON THE PCB

Next: !p2266, f2267

FAN VOLTAGE CONTROL (PCB)

{GAINPCBACS}

Next: p2287, ?2289, ?2291

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2285, !f2286

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2283, !f2284

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2281, !f2282

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2299, !f2300

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2295, !f2296

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2293, !f2294

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2297, !f2298

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2301, !f2302

PRESSURE FAN - IGNITION

ATTACH A PRESSURE GAUGE TO THE FAN PRESSURE TEST POINT
ON/OFF SWITCH ON

Next: p1077, f2328

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: p2331, ?2333, ?2335

BURNER INSPECTION

REMOVE FAN
REMOVE THE BURNER

Next: !p2337, !f2338

OBSERVATION FAN TYPE

Next: p2373, f2361

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2371, !f2372

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2369, !f2370

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2367, !f2368

FAN VOLTAGE CONTROL (PCB)

{GAINPCBACS}

Next: p2374, ?2375, ?2377

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2385, !f2386

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2381, !f2382

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2379, !f2380

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2383, !f2384

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2387, !f2388

RESISTANCE APS

DISCONNECT ONE OF THE ORANGE LEADS FROM THE AIR PRESSURE SWITCH

Next: p2394, !f2395

RESISTANCE OH STAT

DISCONNECT ONE OF THE ORANGE LEADS FROM THE OVERHEAT STAT

Next: p2396, !f2397

RESISTANCE FLUE OVERHEAT STAT

DISCONNECT ONE OF THE ORANGE LEADS FROM THE FLUE OVERHEAT STAT

Next: !p2398, !f2399

CONDENSATE

Next: p1251, !f2455

RESISTANCE APS

DISCONNECT ONE OF THE ORANGE LEADS FROM THE AIR PRESSURE SWITCH

Next: p2460, !f2461

RESISTANCE OH STAT

DISCONNECT ONE OF THE ORANGE LEADS FROM THE OVERHEAT STAT

Next: p2462, !f2463

RESISTANCE FLUE OVERHEAT STAT

DISCONNECT ONE OF THE ORANGE LEADS FROM THE FLUE OVERHEAT STAT

Next: !p2464, !f2465

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: p2469, ?2471, ?2473

BURNER INSPECTION

REMOVE FAN
REMOVE THE BURNER

Next: !p2475, !f2476

ELECTRODE SPARK HARNESS

REMOVE THE IGNITION HARNESS CONNECTION FROM THE ELECTRODES TOP OF THE BURNER AND FROM THE PCB

Next: p2479, !f2480

INSPECTION GAS SUPPLY TUBE

Next: p2481, !f2482

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: p2483, ?2485, ?2487

INSPECTION IGNITION ELECTRODE

REMOVE THE ELECTRODE ASSEMBLY

Next: p2489, !f2490

BURNER INSPECTION

REMOVE FAN
REMOVE THE BURNER

Next: p2491, !f2492

FLUEWAYS PRIMARY HEAT EXCHANGER

Next: !p2493, !f2494

PRESSURE FAN MAXIMUM

{GAINPCBACS}
CONNECT A PRESSURE GAUGE TO THE FAN PRESSURE TEST POINT

Next: p2502, f2503

GAS INLET PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2518, !f2519

INSPECTION FLUE

Next: p2506, !f2507

INSPECTION GAS SUPPLY TUBE

Next: p2508, !f2509

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: p2510, ?2512, ?2514

BURNER INSPECTION

REMOVE FAN
REMOVE THE BURNER

Next: !p2516, !f2517

COMBUSTION SETTINGS HIGH AND LOW

Next: p2520, ?2522, ?2524

SPARKING PRESENT TEST

{GAINPCBACS}
REMO

Next: p2530, !f2531

CONDENSATE

Next: p2532, !f2533

INSPECTION FLUE OH STAT

Next: p2534, !f2535

INSPECTION GAS SUPPLY TUBE

Next: p2536, !f2537

ELECTRODE SENSE HARNESS

DISCONNECT FLAME SENSE LEAD FROM ELECTRODE
DISCONNECT CONNECTOR ST9 FROM THE PCB

Next: p2538, !f2539

ELECTRODE SPARK HARNESS

REMOVE THE IGNITION HARNESS CONNECTION FROM THE ELECTRODES TOP OF THE BURNER AND FROM THE PCB

Next: p2540, !f2541

INSPECTION ELECTRODES

REMOVE THE ELECTRODE ASSEMBLY

Next: p2542, !f2543

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: !p2544, ?2546, ?2548

CONDENSATE

Next: p2551, !f2552

INSPECTION GAS SUPPLY TUBE

Next: p2553, !f2554

INSPECTION SEAL INTEGRITY

Next: p2555, !f2556

INSPECTION FLUE

Next: !p2557, !f2558

CONDENSATE

Next: p2560, !f2561

INSPECTION GAS SUPPLY TUBE

Next: p2562, !f2563

INSPECTION SEAL INTEGRITY

Next: p2564, !f2565

INSPECTION FLUE

Next: !p2566, !f2567

RESISTANCE APS

DISCONNECT ONE OF THE ORANGE LEADS FROM THE AIR PRESSURE SWITCH

Next: p2575, !f2576

RESISTANCE OH STAT

DISCONNECT ONE OF THE ORANGE LEADS FROM THE OVERHEAT STAT

Next: p2577, !f2578

RESISTANCE FLUE OVERHEAT STAT

DISCONNECT ONE OF THE ORANGE LEADS FROM THE FLUE OVERHEAT STAT

Next: !p2579, !f2580

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2582, !f2583

INSPECTION FLUE

Next: p1872, !f2594

INSPECTION FAN MEMBRANE

REMOVE AIR/GAS FAN ASSEMBLY

Next: p1873, ?2601, ?2603

RESISTANCE OH STAT

DISCONNECT ONE OF THE ORANGE LEADS FROM THE OVERHEAT STAT

Next: !p2611, !f2612

OBSERVATION FAN TYPE

Next: p2617, f2618

VOLTAGE FAN (AT PCB)

ENSURE NO DEMANDS

Next: p2638, ?2640, ?2642

KEYED PLUG

LOWER THE FACIA PANEL

Next: p2628, !f2629

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2626, !f2627

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2624, !f2625

RESISTANCE SENSOR TEMP FLOW AND HARNESS

DISCONNECT CONNECTOR FROM ST9 ON THE PCB

Next: p2630, f2631

VOLTAGE DEMAND TO FAN FROM PCB

REMOVE THE FAN CONNE

Next: p2634, !f2635

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: !p2636, !f2637

KEYED PLUG

LOWER THE FACIA PANEL

Next: p2648, !f2649

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2644, !f2645

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2646, !f2647

RESISTANCE SENSOR TEMP FLOW AND HARNESS

DISCONNECT CONNECTOR FROM ST9 ON THE PCB

Next: p2650, f2651

VOLTAGE DEMAND TO FAN FROM PCB

REMOVE THE FAN CONNE

Next: p2654, !f2655

RESISTANCE FAN HARNESS

DISCONNECT THE FAN CONNECTOR FROM THE PCB
DISCONNECT THE FAN CONNECTOR FROM THE FAN ASSEMBLY

Next: p2656, !f2657

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2658, !f2659

INSPECTION FLUE

Next: p1594, !f2726

BURNER

REMOVE FAN
REMOVE THE BURNER

Next: !p2734, !f2735

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}

Next: p2737, f2738

RESISTANCE FAN AND HARNESS

DISCONNECT FAN CONNECTOR ST5 FROM THE PCB

Next: p2741, f2742

RESISTANCE TRANSFORMER

REMOVE THE BACK PLATE OF THE CONTROL BOX, REMOVE THE PCB
AND THE TRANSFORMER FROM THE PCB

Next: p2749, !f2750

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2747, !f2748

OBSERVATION REPLACE FUSE WITH FAN DISCONNECTED

REPLACE THE BLOWN FU

Next: !p2751, f2752

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2755, !f2756

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}

Next: p2761, f2762

RESISTANCE FAN AND HARNESS

DISCONNECT FAN CONNECTOR ST5 FROM THE PCB

Next: p2765, f2766

RESISTANCE TRANSFORMER

REMOVE THE BACK PLATE OF THE CONTROL BOX, REMOVE THE PCB
AND THE TRANSFORMER FROM THE PCB

Next: p2773, !f2774

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2771, !f2772

OBSERVATION REPLACE FUSE WITH FAN DISCONNECTED

REPLACE THE BLOWN FU

Next: !p2775, f2776

INSPECTION FAN

REMOVE PCB FROM FAN ASSEMBLY (FOR INSTRUCTIONS CLICK HERE)

Next: !p2779, !f2780

PUMP LIMPET TEST

Next: p322, !f323

BYPASS SYSTEM

Next: p324, !f325

RESISTANCE SENSOR TEMP FLOW

DISCONNECT PLUG (RE

Next: p751, !f327

BYPASS SYSTEM

Next: !p1089, !f335

FAN RUNS

Next: p489, f569

FURTHER INVESTIGATION LED PROBLEM

Next: !p502, !f885

RESISTANCE FUSE F1

REMOVE FUSE FROM FUSE AND HOLDER FROM PCB

Next: p571, f572

RESISTANCE FUSE F2

REMOVE BACK OF CONTROL BOX, REMOVE TRANSFORMER, PULL BACK PCB FROM CONTROL BOX.

Next: p1114, f576

RESISTANCE TRANSFORMER

REMOVE THE BACK PLATE OF THE CONTROL BOX, REMOVE THE PCB
AND THE TRANSFORMER FROM THE PCB

Next: !p579, !f580

CONDENSATE

Next: !p2702, !f766

CONDENSATE

Next: p840, !f844

GAS INLET PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p1591, !f845

GAS INLET PRESSURE

ATTACH PRESSURE GAUGE TO THE INLET PRESSURE TEST POINT

Next: p2036, !f890

Welcome to the XSol Diagnostic System