XSol Diagnostic System

Welcome to the XSol Diagnostic System

This system provides interactive diagnostic tests with proper sequence navigation based on the decoded .seq file logic.

Start Diagnostic Sequence

or choose a specific test below:

POTTERTON APOLLO 40 SI

G.C. NUMBER 41 494 3

Next: &15, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

CENTRAL HEATING OPERATION

MODE SWITCH IN LOW POSITION

Next: &20, ?93, ?95

BURNER HIGH FLAME

{ISOLATEMAINSPOWER}<

Next: &1, !f29

BURNER IGNITES

MODE SWITCH IN LOW POSITION

Next: &7, f28

FAN RUNS (SWITCH HIGH)

MODE SWITCH IN HIGH POSITION (1)

Next: &104, !f26

FAN RUNS (SWITCH LOW)

MODE SWITCH IN LOW POSITION (1)

Next: &10, f25

PUMP RUNS

Next: &11, f24

REVERSED POLARITY NEON OFF

{ISOLATEMAINSPOWER}
GAIN ACCESS TO PCB

Next: &12, f23

SYSTEM CHECKS

{ISOLATEMAINSPOWER}
PLEASE ENSURE THE FOLLOWING SYSTEM CHECKS ARE COMPLETED.

Next: &13, !f22

POTTERTON APOLLO 40 SI

{ISOLATEMAINSPOWER}<

Next: &14, !f21

RESET

{ISOLATEMAINSPOWER}<

Next: &nff, f35

LOCKOUT

{ISOLATEMAINSPOWER}<

Next: &16, f34

PUMP OVERRUN

MODE SWITCH IN HIGH POSITION

Next: &17, !f33

BURNER OFF (HIGH MODE)

MODE SWITCH IN HIGH POSITION.

Next: &18, !f32

BURNER OFF (LOW)

MODE SWITCH IN LOW POSITION

Next: &19, f31

PILOT IGNITES

MODE SWITCH IN LOW POSITION (1)

Next: &8, f105

RESET

NEON RESET SWITCH

Next: End

PILOT IGNITES

AIR PRESSURE SENSING TUBES

Next: End

PILOT IGNITES

FLUE ASSEMBLY

Next: End

MAIN SOLENOID RESISTANCE

SOLENOID ASSEMBLY

Next: End

PILOT IGNITES

SPARK ELECTRODE LEAD

Next: End

ELECTRODE SPARKING

IGNITION CONTROL PCB

Next: End

ELECTRODE SPARKING

SOLENOID ASSEMBLY

Next: End

PILOT IGNITES

PILOT INJECTOR

Next: End

ELECTRICAL SAFETY CHECK

ELECTRICAL CHECK

Next: End

SYSTEM CHECKS

Next: End

FAN RUNS (SWITCH HIGH)

3 WAY ROCKER SWITCH (MODE SWITCH)

Next: End

BURNER HIGH FLAME

GAS VALVE

Next: End

BURNER OFF (HIGH MODE)

HI THERMOSTAT

Next: End

PUMP OVERRUN

PUMP OVERRUN THERMOSTAT

Next: End

REVERSED POLARITY NEON OFF

Next: End

PUMP RUNS

Next: End

PUMP RUNS

PUMP OVERRUN THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

HI THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

LO THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

AIR PRESSURE SWITCH

Next: End

FAN RUNS (SWITCH LOW)

OVERHEAT THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

NEON RESET SWITCH

Next: End

FAN RUNS (SWITCH LOW)

AIR PRESSURE SENSING TUBES

Next: End

BURNER IGNITES

SPARK ELECTRODE LEAD

Next: End

BURNER IGNITES

SOLENOID ASSEMBLY

Next: End

BURNER OFF (LOW)

LO THERMOSTAT

Next: End

LOCKOUT

IGNITION CONTROL PCB

Next: End

LOCKOUT

NEON RESET SWITCH

Next: End

RESET

IGNITION CONTROL PCB

Next: End

PILOT IGNITES

AIR PRESSURE SWITCH

Next: End

MAIN SOLENOID RESISTANCE

IGNITION CONTROL PCB

Next: End

PILOT IGNITES

SPARK ELECTRODE

Next: End

PILOT IGNITES

GAS VALVE

Next: End

REVERSED POLARITY NEON OFF

IGNITION CONTROL PCB

Next: End

PUMP RUNS

Next: End

PUMP RUNS

PUMP

Next: End

FAN RUNS (SWITCH LOW)

3 WAY ROCKER SWITCH (MODE SWITCH)

Next: End

FAN RUNS (SWITCH LOW)

FAN

Next: End

FAN RUNS (SWITCH LOW)

IGNITION CONTROL PCB

Next: End

BURNER IGNITES

IGNITION CONTROL PCB

Next: End

BURNER IGNITES

BURNER INJECTOR

Next: End

BURNER IGNITES

GAS VALVE

Next: End

CENTRAL HEATING OPERATION

HEAT EXCHANGER

Next: End

CENTRAL HEATING OPERATION

Next: End

BURNER OFF (LOW)

GAS VALVE

Next: End

HEAT EXCHANGER NOISY OPERATION WATER CIRCULATING

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p94

QUIET OPERATION RADS NOT HEATING

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p96

09/01/2018 11:57:49 1801_1_50_1 31/01/2018 09:50:58

09/01/2018 13:18:33

Next: End

ELECTRODE SPARKING

{ISOLATEMAINSPOWER}
REMOVE BOILER INNER CASE AND COMBUSTION CHAMBER COVER

Next: p106, f107

AIR PRESSURE SWITCH: AIR DETECT VOLTAGE

Next: p108, f109

AIR PRESSURE SENSING TUBES

{ISOLATEMAINSPOWER}

Next: p110, !f111

ELECTRODE LEAD RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p118, !f119

MAINS POWER POLARITY

Next: !p37, !f36

ROOM THERMOSTAT VOLTAGE (OUTPUT)

Next: p39, f38

MODE SWITCH OUTPUT VOLTAGE (LOW POSITION)

MODE SWITCH IN LOW POSITION

Next: p45, f44

MAIN GAS VALVE VOLTAGE

MODE SWITCH IN LOW POSITION

Next: p86, f85

LO THERMOSTAT RESISTANCE (OPEN)

ENSURE THE BOILER HA

Next: !p98, !f97

LOCKOUT NEON VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p100, !f99

RESET SWITCH RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT PCB CONNECTOR PL4

Next: !p102, !f101

MAINS POWER SUPPLY

Next: !p41, !f40

HI THERMOSTAT RESISTANCE (CLOSED)

{ISOLATEMAINSPOWER}
ENSURE THAT THE BOILER HAS NOT REACHED ITS HIGH OPERATING MODE TEMPERATURE.

Next: p47, !f46

OVERHEAT THERMOSTAT RESISTANCE

{ISOLATEMAINSPOWER}

Next: p59, !f54

ELECTRODE LEAD RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p88, !f87

MAIN SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p92, !f91

PILOT VOLTAGE

Next: p120, !f121

MAIN SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: p114, !f115

FLUE

Next: !p112, !f113

ELECTRODE AND ELECTRODE LEAD RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE THE SPARK ELECTRODE LEAD ASSY AND ELECTRODE FROM THE BOILER.

Next: !p116, f117

PILOT SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: p122, !f123

PILOT INJECTOR

{ISOLATEMAINSPOWER}

Next: !p124, !f125

PUMP VOLTAGE (CH DEMAND)

MODE SWITCH IN LOW POSITION

Next: !p43, !f42

AIR PRESSURE SWITCH: NO AIR RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p51, !f50

LO THERMOSTAT RESISTANCE (CLOSED)

{ISOLATEMAINSPOWER}
ENSURE THAT THE BOILER HAS NOT REACHED ITS LOW OPERATING MODE TEMPERATURE.

Next: !p49, !f48

FAN VOLTAGE

MODE SWITCH IN LOW POSITION

Next: !p53, f52

RESET SWITCH RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT PCB CONNECTOR PL4

Next: p62, !f60

AIR PRESSURE SENSING TUBES

{ISOLATEMAINSPOWER}

Next: !p64, !f63

BURNER GAS PRESSURE

{ISOLATEMAINSPOWER}<

Next: !p90, f89

System Information

Total Tests: 94
Sequence Logic: Decoded from encrypted .seq file
Navigation: Dynamic based on pass/fail results
Source: 4731307 GW SWIFTFLOW 100 SIT Control