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:

POTTERTON MIDAS SFI

G.C. NUMBER 47 494 0

Next: &23, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

CH PUMP OVERRUN

PURGE SWITCH IN NORM

Next: &nff, !f24

CH ANTI-CYCLING PERIOD

PURGE SWITCH IN NORM

Next: &1, !f25

HW LOW FAN OVERRUN

PURGE SWITCH IN NORM

Next: &2, !f26

HW PUMP OVERRUN

PURGE SWITCH IN NORM

Next: &3, !f27

CH BURNER MODULATION

{ISOLATEMAINSPOWER}<

Next: &4, f167

HOT WATER

PURGE SWITCH IN NORM

Next: &5, !f166

CH PRESSURE RISE

PURGE SWITCH IN NORM

Next: &6, !f165

CENTRAL HEATING

{ISOLATEMAINSPOWER}<

Next: &7, ?157, ?159, ?161

HW BURNER MODULATES

{ISOLATEMAINSPOWER}<

Next: &8, f148

HW TOP UP OPERATION

PURGE SWITCH IN NORM

Next: &9, ?133, ?135, ?137, ?139, ?141

HW HIGH BURNER

{ISOLATEMAINSPOWER}<

Next: &10, f172

HW PILOT IGNITES

PURGE SWITCH IN NORM

Next: &11, f113

HW HIGH FAN

PURGE SWITCH IN NORM

Next: &12, f108

HW PUMP RUNS

PURGE SWITCH IN NORM

Next: &13, f103

CH LOW BURNER

{ISOLATEMAINSPOWER}<

Next: &14, ?91, ?93

CH PILOT IGNITES

PURGE SWITCH IN NORM

Next: &15, f85

CH SPARKING

PURGE SWITCH IN NORM

Next: &16, f74

CH LOW FAN

PURGE SWITCH IN NORM

Next: &17, f57

CH TIMED PUMP RUNS

PURGE SWITCH IN NORM

Next: &18, f32

CH CONTINUOUS PUMP RUNS

PURGE SWITCH IN NORM

Next: &19, f31

HW FLOW RATE

{ISOLATEMAINSPOWER}

Next: &20, f30

SYSTEM CHECKS

Next: &21, !f29

POTTERTON MIDAS SFI

{ISOLATEMAINSPOWER}<

Next: &22, !f28

CH LOW BURNER

MAIN SOLENOID

Next: End

CH LOW BURNER

GAS VALVE

Next: End

HW PUMP RUNS

HW SELECTOR SWITCH

Next: End

HW HIGH FAN

HW INLET SENSOR

Next: End

HW PILOT IGNITES

AIR FLOW SENSOR

Next: End

HW PILOT IGNITES

AIR FLOW PIPE

Next: End

HW PILOT IGNITES

FLUE ASSEMBLY

Next: End

HW PILOT IGNITES

CH SENSOR

Next: End

HW PILOT IGNITES

HW FLOW SENSOR

Next: End

HW PILOT IGNITES

HW POTENTIOMETER

Next: End

HW TOP UP OPERATION

HW FLOW SENSOR

Next: End

HW TOP UP OPERATION

HW POTENTIOMETER

Next: End

HW BURNER MODULATES

HW FLOW SENSOR

Next: End

HW BURNER MODULATES

HW INLET SENSOR

Next: End

HW BURNER MODULATES

HW POTENTIOMETER

Next: End

HW BURNER MODULATES

MAIN PCB

Next: End

CENTRAL HEATING

CH NON RETURN VALVE

Next: End

CH PRESSURE RISE

EXPANSION VESSEL

Next: End

HOT WATER

SECONDARY HEAT EXCHANGER

Next: End

CH BURNER MODULATION

CH SENSOR

Next: End

CH BURNER MODULATION

CH POTENTIOMETER

Next: End

HW HIGH BURNER

MAIN PCB

Next: End

HW HIGH BURNER

MODUREG SOLENOID

Next: End

HIGH FLOW

AIR FLOW SENSOR

Next: End

CH PUMP OVERRUN

MAIN PCB

Next: End

CH ANTI-CYCLING PERIOD

MAIN PCB

Next: End

HW LOW FAN OVERRUN

MAIN PCB

Next: End

HW PUMP OVERRUN

MAIN PCB

Next: End

ELECTRICAL SAFETY CHECKS

ELECTRIC CHECKS

Next: End

SYSTEM CHECKS

SYSTEM CHECKS

Next: End

HW FLOW RATE

HW FILTER

Next: End

HW FLOW RATE

HW RESTRICTOR

Next: End

CH CONTINUOUS PUMP RUNS

WATER PRESSURE GAUGE

Next: End

CH CONTINUOUS PUMP RUNS

Next: End

CH CONTINUOUS PUMP RUNS

OVERHEAT THERMOSTAT

Next: End

CH CONTINUOUS PUMP RUNS

CH SELECTOR SWITCH

Next: End

CH CONTINUOUS PUMP RUNS

ROOM THERMOSTAT

Next: End

CH CONTINUOUS PUMP RUNS

TRANSFORMER

Next: End

CH TIMED PUMP RUNS

TIMER

Next: End

CH LOW FAN

PURGE SWITCH

Next: End

CH LOW FAN

CH POTENTIOMETER

Next: End

CH LOW FAN

CH SENSOR

Next: End

IGNITION PCB CIRCUIT 1 VOLTAGE (CH DEMAND)

IGNITION PCB

Next: End

MAIN PCB CIRCUIT 1 VOLTAGE (CH DEMAND)

MAIN PCB

Next: End

CH LOW FAN VOLTAGE

MAIN PCB

Next: End

CH SPARKING

AIR FLOW SENSOR

Next: End

CH SPARKING

AIR FLOW PIPE

Next: End

CH SPARKING

FLUE ASSEMBLY

Next: End

CH SPARKING

IGNITION PCB

Next: End

CH PILOT IGNITES

IGNITION PCB

Next: End

CH PILOT IGNITES

PILOT ASSEMBLY

Next: End

CH LOW BURNER

SPARK ELECTRODE AND LEAD

Next: End

CH LOW BURNER

BURNER INJECTOR

Next: End

HW PUMP RUNS

HW PUMP

Next: End

HW PUMP RUNS

MAIN PCB

Next: End

HW HIGH FAN

FAN ASSEMBLY

Next: End

HW HIGH FAN

MAIN PCB

Next: End

HW PILOT IGNITES

MAIN PCB

Next: End

HW TOP UP OPERATION

HW NON RETURN VALVE

Next: End

HW TOP UP OPERATION

SECONDARY HEAT EXCHANGER

Next: End

HW TOP UP OPERATION

PRIMARY HEAT EXCHANGER

Next: End

HW TOP UP OPERATION

CH NON RETURN VALVE

Next: End

HW TOP UP OPERATION

MAIN PCB

Next: End

HW BURNER MODULATES

GAS VALVE

Next: End

CENTRAL HEATING

HW NON RETURN VALVE

Next: End

QUIET OPERATION, RADIATORS NOT HEATING

Next: End

BOILER NOISY, BURNER OFF QUICKLY

Next: End

CH BURNER MODULATION

MAIN PCB

Next: End

HW HIGH BURNER

GAS VALVE

Next: End

HW HIGH BURNER

MODUREG

Next: End

BLOCKED ON HIGH FLOW

AIR FLOW SENSOR

Next: End

BLOCKED AIR FLOW

PRIMARY HEAT EXCHANGER

Next: End

BLOCKAGE IN AIR FLOW

FLUE ASSEMBLY

Next: End

HW FLOW RATE

SECONDARY HEAT EXCHANGER

Next: End

CH CONTINUOUS PUMP RUNS

WATER PRESSURE SWITCH

Next: End

WATER PRESSURE SWITCH RESISTANCE

MAIN PCB

Next: End

CH CONTINUOUS PUMP RUNS

CH PUMP

Next: End

CH PUMP VOLTAGE

MAIN PCB

Next: End

CH TIMED PUMP RUNS

CH SELECTOR SWITCH

Next: End

PURGE SWITCH RESISTANCE

MAIN PCB

Next: End

MAIN PCB CIRUIT 1 VOLTAGE (CH DEMAND)

IGNITION PCB

Next: End

CH LOW FAN

FAN ASSEMBLY

Next: End

CH SPARKING

MAIN PCB

Next: End

CH SPARKING

SPARK ELECTRODE AND LEAD

Next: End

CH PILOT IGNITES

GAS VALVE

Next: End

CH LOW BURNER

MODUREG

Next: End

CH LOW BURNER

IGNITION PCB

Next: End

BOILER NOISY, CUTS OUT QUICKLY, FLOW COLD

CHARACTERISTIC TEST FROM HW TOP UP OPERATION

Next: !p134

BOILER NOISY, FLOW WARM, RETURN COLD

CHARACTERISTIC TEST FROM HW TOP UP OPERATION

Next: !p136

BOILER NOISY, BOTH PIPES WARM

CHARACTERISTIC TEST FROM HW TOP UP OPERATION

Next: !p138

TOP UP OPERATION TOO LONG

CHARACTERISTIC TEST FROM HW TOP UP OPERATION

Next: !p143

NO TOP UP OPERATION

CHARACTERISTIC TEST FROM HW TOP UP OPERATION

Next: p142

BOILER NOISY, BURNER OFF QUICKLY

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: p158

CHANGE TO TOP UP OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p160

QUIET OPERATION, RADIATORS NOT HEATING

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p162

BURNER LIGHTS, PRESSURE GREATER THAN MINIMUM

CHARACTERISTIC TEST FROM CH LOW BURNER

Next: !p92

BURNER DOES NOT LIGHT

CHARACTERISTIC TEST FROM CH LOW BURNER

Next: p94

11/12/2012 13:24:39 1303_1_50_1 10/01/2013 13:32:08

11/12/2012 13:40:46

Next: End

HW PUMP VOLTAGE

PURGE SWITCH IN NORM

Next: !p105, f104

HW SWITCH RESISTANCE

{ISOLATEMAINSPOWER}
HW SWITCH IN ON POSITION

Next: !p107, !f106

HW HIGH FAN VOLTAGE

PURGE SWITCH IN NORM

Next: !p110, f109

HW INLET SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE BLUE WIRES FROM THE HW INLET SENSOR

Next: !p112, !f111

AIR FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR MARKED PL3 FROM THE PCB

Next: p115, !f114

HW FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE RED WIRES FROM THE HW FLOW SENSOR

Next: p150, !f149

CH SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE GREY WIRES FROM THE CH FLOW SENSOR

Next: p169, !f168

DOES LED 2 LIGHT GO OUT

PURGE SWITCH IN NORM

Next: p189, f181

IS AIR FLOW SENSOR BLOCKED?

{ISOLATEMAINSPOWER}<

Next: !p196, f197

MODUREG SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p194, !f195

IS MAIN HEAT EXCHANGER BLOCKED?

{ISOLATEMAINSPOWER}
GAIN ACCESS TO COMBUSTION CHAMBER BY REMOVING THE INNER COMBUSTION COVER.

Next: !p198, f199

IS FLUE BLOCKED?

Next: !p200, !f201

HW FILTER

{ISOLATEMAINSPOWER}
WATER OFF

Next: p33, !f34

TRANSFORMER INPUT VOLTAGE

PURGE SWITCH IN NORMAL POSITION
HW SWITCH IN OFF POSITION
CH SWITCH IN OFF POSITION

Next: p38, f37

TIMER RESISTANCE

{ISOLATEMAINSPOWER}
ENSURE TIMER IS IN AN ON PERIOD

Next: !p56, !f55

WATER PRESSURE SWITCH RESISTANCE

{ISOLATEMAINSPOWER}

Next: p40, f39

WATER PRESSURE

{ISOLATEMAINSPOWER}

Next: !p42, !f41

CH SELECTOR SWITCH RESISTANCE (CH CONTINUOUS)

{ISOLATEMAINSPOWER}
CH SWITCH IN CH CONTINUOUS POSITION

Next: p50, !f49

IGNITION PCB SUPPLY VOLTAGE (CH DEMAND)

PURGE SWITCH IN NORM

Next: p59, f58

PURGE SWITCH RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE TWO WHITE WIRES FROM THE PURGE SWITCH

Next: p61, !f60

IGNITION PCB CIRCUIT 1 VOLTAGE (CH DEMAND)

PURGE SWITCH IN NORM

Next: p69, !f68

CH IGNITION PCB VOLTAGE

PURGE SWITCH IN NORM

Next: p76, f75

AIR FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR MARKED PL3 FROM THE PCB

Next: p78, !f77

CH PILOT VOLTAGE

PURGE SWITCH IN NORM

Next: p87, !f86

SPARK ELECTRODE & LEAD

{ISOLATEMAINSPOWER}

Next: !p98, !f97

AIR FLOW AIR PIPE

{ISOLATEMAINSPOWER}

Next: p117, !f116

FLUE

Next: p119, !f118

CH SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE GREY WIRES FROM THE CH FLOW SENSOR

Next: p121, !f120

HW FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE RED WIRES FROM THE HW FLOW SENSOR

Next: p123, !f122

HW POTENTIOMETER RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR PL5 FROM THE PCB

Next: !p125, !f124

HW FLOW SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE RED WIRES FROM THE HW FLOW SENSOR

Next: p145, !f144

HW POTENTIOMETER RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR PL5 FROM THE PCB

Next: !p147, !f146

HW INLET SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE BLUE WIRES FROM THE HW INLET SENSOR

Next: p152, !f151

HW POTENTIOMETER RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR PL5 FROM THE PCB

Next: p154, !f153

HW MODULATION VOLTAGE

PURGE SWITCH IN NORM

Next: !p156, !f155

CH BYPASS HEAT UP

PURGE SWITCH IN NORM

Next: !p164, !f163

CH POTENTIOMETER RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR MARKED PL5 FROM THE PCB

Next: !p171, !f170

HW FULL MODULATION VOLTAGE

PURGE SWITCH IN NORM

Next: p190, !f191

MODUREG MECHANICAL OPERATION

PURGE SWITCH IN NORM

Next: !p192, f193

HW RESTRICTOR

{ISOLATEMAINSPOWER}
WATER OFF

Next: !p36, !f35

CH PUMP VOLTAGE

PURGE SWITCH IN NORM

Next: !p48, f47

MAINS POWER SUPPLY

PURGE SWITCH IN NORMAL POSITION
HW SWITCH IN OFF POSITION
CH SWITCH IN OFF POSITION

Next: p44, !f43

OVERHEAT THERMOSTAT RESISTANCE

{ISOLATEMAINSPOWER}
ENSURE THAT THE BOILER IS NOT IN AN OVERHEAT CONDITION

Next: !p46, !f45

ROOM THERMOSTAT RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR PL8 FROM THE PCB

Next: p52, !f51

TRANSFORMER OUTPUT VOLTAGE

PURGE SWITCH IN NORMAL POSITION
HW SWITCH IN OFF POSITION
CH SWITCH IN OFF POSITION

Next: !p54, !f53

IGNITION PCB CIRCUIT 2 VOLTAGE (CH DEMAND)

PURGE SWITCH IN NORM

Next: p67, f66

CH POTENTIOMETER RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE MAIN PCB CONNECTOR MARKED PL5 FROM THE PCB

Next: p63, !f62

CH SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT THE GREY WIRES FROM THE CH FLOW SENSOR

Next: !p65, !f64

CH LOW FAN VOLTAGE

PURGE SWITCH IN NORM

Next: !p73, !f72

MAIN PCB CIRCUIT 1 VOLTAGE (CH DEMAND)

PURGE SWITCH IN NORM

Next: !p71, !f70

CH IGNITION PCB SPARKING TUBE

PURGE SWITCH IN NORM

Next: !p84, !f83

AIR FLOW AIR PIPE

{ISOLATEMAINSPOWER}

Next: p80, !f79

FLUE

Next: !p82, !f81

PILOT INJECTOR

{ISOLATEMAINSPOWER}

Next: !p89, !f88

CH GAS VALVE VOLTAGE

PURGE SWITCH IN NORM

Next: p96, f95

GAS VALVE SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: p99, !f100

BURNER GAS PRESSURE

{ISOLATEMAINSPOWER}<

Next: !p102, !f101

System Information

  • Total Tests: 180
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control