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 50 SI

G.C. NUMBER 41 494 3

Next: &12, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

PUMP OVERRUN

MODE SWITCH IN HIGH POSITION

Next: &nff, !f15

BURNER OFF (HIGH MODE)

MODE SWITCH IN HIGH POSITION

Next: &1, !f16

BURNER OFF (LOW MODE)

MODE SWITCH IN LOW POSITION

Next: &2, f17

CENTRAL HEATING OPERATION

MODE SWITCH IN LOW POSITION

Next: &3, ?20, ?22

BURNER HIGH FLAME

{ISOLATEMAINSPOWER}<

Next: &4, !f75

BURNER IGNITES

MODE SWITCH IN LOW POSITION

Next: &5, f66

PILOT IGNITES

MODE SWITCH IN LOW POSITION (1)

Next: &6, f47

FAN RUNS (SWITCH HIGH)

MODE SWITCH IN HIGH POSITION

Next: &7, !f46

FAN RUNS (SWITCH LOW)

MODE SWITCH IN LOW POSITION (1)

Next: &8, f31

PUMP RUNS

Next: &9, f24

SYSTEM CHECKS

{ISOLATEMAINSPOWER}
PLEASE ENSURE THE FOLLOWING SYSTEM CHECKS ARE COMPLETED

Next: &10, !f14

POTTERTON APOLLO 50 SI

{ISOLATEMAINSPOWER}<

Next: &11, !f13

ELECTRICAL SAFETY CHECK

ELECTRICAL CHECK

Next: End

SYSTEM CHECKS

Next: End

PUMP OVERRUN

PUMP OVERRUN THERMOSTAT

Next: End

BURNER OFF (HIGH MODE)

HIGH THERMOSTAT

Next: End

BURNER OFF (LOW MODE)

LOW THERMOSTAT

Next: End

PUMP RUNS

Next: End

PUMP RUNS

PUMP OVERRUN THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

HIGH THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

LOW THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

AIR PRESSURE SWITCH

Next: End

FAN RUNS (SWITCH LOW)

OVERHEAT THERMOSTAT

Next: End

FAN RUNS (SWITCH LOW)

AIR PRESSURE SENSING TUBE

Next: End

FAN RUNS (SWITCH HIGH)

MODE SWITCH

Next: End

PILOT IGNITES

AIR PRESSURE SENSING TUBE

Next: End

PILOT IGNITES

FLUE ASSEMBLY

Next: End

PILOT IGNITES

PILOT SOLENOID

Next: End

PILOT IGNITES

PILOT INJECTOR

Next: End

BURNER IGNITES

SPARK ELECTRODE AND LEAD

Next: End

BURNER IGNITES

MAIN SOLENOID

Next: End

BURNER HIGH FLAME

GAS VALVE

Next: End

PILOT SOLENOID RESISTANCE

IGNITION PCB

Next: End

PCB SPARK

IGNITION PCB

Next: End

BURNER OFF (LOW MODE)

GAS VALVE

Next: End

CENTRAL HEATING OPERATION

HEAT EXCHANGER

Next: End

CENTRAL HEATING OPERATION

Next: End

PUMP RUNS

Next: End

PUMP RUNS

PUMP

Next: End

FAN RUNS (SWITCH LOW)

MODE SWITCH

Next: End

FAN RUNS (SWITCH LOW)

FAN

Next: End

FAN RUNS (SWITCH LOW)

IGNITION PCB

Next: End

PILOT IGNITES

AIR PRESSURE SWITCH

Next: End

PILOT IGNITES

GAS VALVE

Next: End

BURNER IGNITES

IGNITION PCB

Next: End

BURNER IGNITES

BURNER INJECTOR

Next: End

BURNER IGNITES

GAS VALVE

Next: End

PILOT IGNITES

SPARK ELECTRODE AND LEAD

Next: End

HEAT EXCHANGER NOISY OPERATION, WATER CIRCULATING

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p21

HEAT EXCHANGER QUIET OPERATION, RADIATORS NOT HEATING

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p23

09/01/2018 10:56:07 1801_1_50_1 31/01/2018 09:51:14

09/01/2018 13:18:08

Next: End

LOW THERMOSTAT RESISTANCE (SATISFIED)

ENSURE THE BOILER HA

Next: !p18, !f19

ROOM THERMOSTAT/EXTERNAL CONTROLS VOLTAGE (OUTPUT)

{ISOLATEMAINSPOWER}
GAIN ACCESS TO BOILER TERMINAL BLOCK

Next: p26, f25

MAINS POWER SUPPLY

Next: !p28, !f27

MODE SWITCH VOLTAGE (LOW POSITION)

{ISOLATEMAINSPOWER}
MODE SWITCH IN LOW POSITION
GAIN ACCESS TO APPLIANCE TERMINAL STRIP

Next: p33, f32

HIGH THERMOSTAT RESISTANCE (CALLING)

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

Next: p35, !f34

OVERHEAT THERMOSTAT RESISTANCE

{ISOLATEMAINSPOWER}

Next: p43, !f42

ELECTRODE SPARKING

{ISOLATEMAINSPOWER}<

Next: p49, f48

AIR PRESSURE SWITCH (AIR DETECT VOLTAGE)

{ISOLATEMAINSPOWER}
GAIN ACCESS TO BOILER TERMINAL BLOCK

Next: p77, f50

AIR PRESSURE SENSING TUBE

{ISOLATEMAINSPOWER}

Next: p53, !f52

MAIN GAS VALVE VOLTAGE

{ISOLATEMAINSPOWER}
MODE SWITCH IN LOW POSITION
REMOVE PLASTIC COVER FROM GAS VALVE

Next: p68, f67

ELECTRODE AND LEAD RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p70, !f69

MAIN SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p73, !f74

PUMP VOLTAGE (CH DEMAND)

MODE SWITCH IN LOW POSITION

Next: !p30, !f29

AIR PRESSURE SWITCH (NO AIR RESISTANCE)

{ISOLATEMAINSPOWER}

Next: p39, !f38

LOW THERMOSTAT RESISTANCE (CALLING)

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

Next: !p37, !f36

FAN VOLTAGE

MODE SWITCH IN LOW POSITION

Next: !p41, f40

AIR PRESSURE SENSING TUBE

{ISOLATEMAINSPOWER}

Next: !p45, !f44

PILOT SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE PLASTIC COVER FROM GAS VALVE

Next: p59, !f58

FLUE ASSEMBLY

Next: !p55, !f54

PILOT VOLTAGE

MODE SWITCH IN LOW POSITION

Next: p61, !f76

PILOT INJECTOR

{ISOLATEMAINSPOWER}

Next: !p63, !f62

BURNER GAS PRESSURE

{ISOLATEMAINSPOWER}<

Next: !p72, f71

SPARK ELECTRODE AND LEAD

{ISOLATEMAINSPOWER}

Next: !p78, !f79

System Information

Total Tests: 76
Sequence Logic: Decoded from encrypted .seq file
Navigation: Dynamic based on pass/fail results
Source: 4731307 GW SWIFTFLOW 100 SIT Control