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:

ELM LE-BLANC WINDSOR GVM 4.20

G.C. NUMBER 47 241 0

Next: &20, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

CH SYSTEM PRESSURE RISE

ROTARY SWITCH IN CH

Next: &nff, !f21

CENTRAL HEATING

ROTARY SWITCH IN CH

Next: &1, ?22, ?24

HOT WATER

ROTARY SWITCH IN DHW

Next: &2, ?141, ?154

CH DEMAND (SATISFIED)

ROTARY SWITCH IN CH AND DHW POSITION
CH OPERATIVE THERMOSTAT ADJUSTED TO MAXIMUM

Next: &3, !f140

CH HIGH BURNER

ROTARY SWITCH IN CH

Next: &4, !f139

CH HIGH FAN

ROTARY SWITCH IN CH

Next: &5, !f138

CH PUMP FLOW VALVE OPERATION

ROTARY SWITCH IN CH AND DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: &6, f123

DHW BURNER MODULATES

ROTARY SWITCH IN DHW

Next: &7, f116

DHW HIGH BURNER

ROTARY SWITCH IN DHW

Next: &8, f107

DHW LOW BURNER

ROTARY SWITCH IN DHW POSITION
DHW CONTROL ADJUSTED TO MAXIMUM
DEPRESS BOILER CASE SWITCH

Next: &9, f82

DHW DEMAND

ROTARY SWITCH IN DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: &10, f72

GAS VALVE FLAME FAILURE DEVICE

ROTARY SWITCH IN DHW POSITION

Next: &11, !f71

PILOT ESTABLISHED

ROTARY SWITCH IN DHW POSITION

Next: &12, f66

PILOT IGNITES

ROTARY SWITCH IN DHW POSITION

Next: &13, f63

PILOT SPARKING

ROTARY SWITCH IN DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: &14, f51

HIGH FAN (IGNITION DEMAND)

ROTARY SWITCH DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: &15, f48

SLOW FAN OPERATION

ROTARY SWITCH IN DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: &16, f37

DHW FLOW RATE

{ISOLATEMAINSPOWER}

Next: &17, f32

SYSTEM CHECKS

{ISOLATEMAINSPOWER}

Next: &18, !f31

ELM LE-BLANC WINDSOR GVM 4.20

G.C. NUMBER 47 241 0

Next: &19, !f30

DHW LOW BURNER

LIGHTER SWITCH

Next: End

DHW LOW BURNER

GAS VALVE SOLENOID

Next: End

DHW HIGH BURNER

GAS VALVE SOLENOID

Next: End

DHW HIGH BURNER

PCB

Next: End

DHW HIGH BURNER

MODULATION BOX

Next: End

DHW HIGH BURNER

MODULATING GAS VALVE

Next: End

DHW BURNER MODULATES

DHW ADJUSTMENT CAM

Next: End

DHW BURNER MODULATES

MODULATION BOX

Next: End

DHW BURNER MODULATES

MODULATING GAS VALVE

Next: End

CH PUMP FLOW VALVE OPERATION

ROTARY SWITCH

Next: End

CH PUMP FLOW VALVE OPERATION

ROOM THERMOSTAT

Next: End

CH PUMP FLOW VALVE OPERATION

PUMP

Next: End

CH PUMP FLOW VALVE OPERATION

PUMP FLOW VALVE SPINDLE

Next: End

CH PUMP FLOW VALVE OPERATION

PUMP FLOW VALVE DIAPHRAGM

Next: End

CH HIGH FAN

CH CONTROL THERMOSTAT

Next: End

CH HIGH BURNER

PUMP FLOW SWITCH

Next: End

CH DEMAND (SATISFIED)

CH CONTROL THERMOSTAT

Next: End

PILOT SPARKING

LIGHTER SWITCH

Next: End

PILOT SPARKING

SPARK CONNECTOR

Next: End

DHW LOW BURNER

TRANSFORMER

Next: End

DHW FLOW RATE

DHW FLOW VALVE PISTON

Next: End

DHW DEMAND

DHW FLOW VALVE PISTON

Next: End

CH SYSTEM PRESSURE RISE

EXPANSION VESSEL

Next: End

CENTRAL HEATING

CH BYPASS ADJUSTMENT

Next: End

ELECTRICAL CHECKS

ELECTRICAL CHECKS

Next: End

SYSTEM CHECKS

SYSTEM CHECKS

Next: End

DHW FLOW RATE

DHW INLET FILTER

Next: End

SLOW FAN OPERATION

BOILER CASE SWITCH

Next: End

SLOW FAN OPERATION

MAINS POWER

Next: End

SLOW FAN OPERATION

3 AMP FUSE

Next: End

SLOW FAN OPERATION

PCB

Next: End

HIGH FAN (IGNITION DEMAND)

LIGHTER SWITCH

Next: End

PILOT SPARKING

SPARK ELECTRODE

Next: End

PILOT SPARKING

TRANSFORMER

Next: End

PILOT SPARKING

SPARK ELECTRODE LEAD

Next: End

PILOT IGNITES

PILOT

Next: End

PILOT ESTABLISHED

OVERHEAT THERMOSTAT

Next: End

PILOT ESTABLISHED

THERMOCOUPLE

Next: End

GAS VALVE FLAME FAILURE DEVICE

PUSH BUTTON GAS VALVE

Next: End

DHW DEMAND

DHW FLOW VALVE SPINDLE

Next: End

DHW DEMAND

DHW FLOW VALVE DIAPHRAGM

Next: End

DHW DEMAND

MODULATION BOX

Next: End

DHW LOW BURNER

AIR PRESSURE SWITCH TUBES

Next: End

DHW LOW BURNER

FLUE

Next: End

DHW LOW BURNER

0.25 AMP FUSE

Next: End

DHW LOW BURNER

CH LIMIT THERMOSTAT

Next: End

DHW LOW BURNER

DHW LIMIT THERMOSTAT

Next: End

DHW LOW BURNER

DHW FLOW SWITCH MICROSWITCHES

Next: End

DHW LOW BURNER

PCB

Next: End

DHW LOW BURNER

BURNER INJECTOR

Next: End

DHW LOW BURNER

GAS VALVE

Next: End

DHW HIGH BURNER

GAS VALVE

Next: End

DHW BURNER MODULATES

DHW PHIAL/THERMOSTAT

Next: End

CH PUMP FLOW VALVE OPERATION

TIMER

Next: End

CH PUMP FLOW VALVE OPERATION

DHW FLOW SWITCH MICROSWITCHES

Next: End

CH PUMP FLOW VALVE OPERATION

CH NON RETURN VALVE

Next: End

HOT WATER

HEAT EXCHANGER

Next: End

PILOT SPARKING

SPARK GENERATOR

Next: End

HOT WATER

CH NON RETURN VALVE

Next: End

SYSTEM FAULT

Next: End

CENTRAL HEATING

HEAT EXCHANGER

Next: End

DHW FLOW RATE

HEAT EXCHANGER

Next: End

SLOW FAN OPERATION

ROTARY SWITCH

Next: End

SLOW FAN OPERATION

FAN

Next: End

HIGH FAN (IGNITION DEMAND)

PCB

Next: End

PILOT IGNITES

GAS CONTROL VALVE

Next: End

PILOT ESTABLISHED

MAGNETIC HEAD

Next: End

DHW DEMAND

DHW FLOW SWITCH MICROSWITCHES

Next: End

DHW LOW BURNER

AIR PRESSURE SWITCH

Next: End

DHW NOT HEATING, RADIATORS COLD

CHARACTERISTIC TEST FROM HOT WATER

Next: !p142

DHW NOT HEATING, RADIATORS WARM

CHARACTERISTIC TEST FROM HOT WATER

Next: !p155

HEAT EXCHANGER NOISY OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: p23

HEAT EXCHANGER QUIET OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p25

26/08/2014 14:47:20 1408_1_50_1 27/08/2014 14:54:59

27/08/2014 09:41:11

Next: End

GAS VALVE SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p106, !f105

GAS VALVE SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}

Next: p109, !f108

DHW TEMPERATURE ADJUSTMENT CAM

{ISOLATEMAINSPOWER}

Next: p118, !f117

CH PUMP VOLTAGE

ROTARY SWITCH IN CH

Next: p125, f124

TIMER OUTPUT VOLTAGE

ROTARY SWITCH IN CH AND DHW POSITION
KEEP CASE SWITCH DEPRESSED

Next: p127, f126

CH THERMOSTAT OUTPUT VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p129, !f128

DHW INLET FILTER

{ISOLATEMAINSPOWER}
TURN OFF MAINS WATER SUPPLY

Next: p34, !f33

BOILER CASE SWITCH OUTPUT VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p39, f38

BOILER CASE SWITCH RESISTANCE

{ISOLATEMAINSPOWER}

Next: p41, !f40

LIGHTER SWITCH CONTACTS 1 AND 3 RESISTANCE

{ISOLATEMAINSPOWER}

Next: !p50, !f49

SPARK ELECTRODE

{ISOLATEMAINSPOWER}

Next: p54, !f53

PILOT INJECTOR

{ISOLATEMAINSPOWER}

Next: !p65, !f64

OVERHEAT THERMOSTAT RESISTANCE

{ISOLATEMAINSPOWER}

Next: p68, !f67

DHW FLOW VALVE PISTON

{ISOLATEMAINSPOWER}
TURN OFF MAINS WATER SUPPLY

Next: p75, !f158

LOW BURNER GAS VALVE VOLTAGE (DHW DEMAND)

ROTARY SWITCH IN DHW POSITION

Next: p84, f83

AIR PRESSURE SWITCH CONTINUITY (DHW DEMAND)

{ISOLATEMAINSPOWER}
ROTARY SWITCH IN DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: p86, f85

AIR PRESSURE SWITCH TUBES

{ISOLATEMAINSPOWER}

Next: p88, !f87

LIGHTER SWITCH RESISTANCE (NO IGNITION DEMAND)

{ISOLATEMAINSPOWER}

Next: !p102, !f101

HIGH BURNER GAS VALVE VOLTAGE (DHW DEMAND)

ROTARY SWITCH IN CH AND DHW POSITION

Next: p111, !f110

MODULATION BOX

{ISOLATEMAINSPOWER}

Next: p113, !f112

MODULATING GAS VALVE TEST

DHW THERMOSTAT SET T

Next: !p115, !f114

MODULATION BOX

{ISOLATEMAINSPOWER}

Next: p120, !f119

MODULATING GAS VALVE TEST

DHW THERMOSTAT SET T

Next: !p121, !f122

CH PUMP RUNS

ROTARY SWITCH IN CH AND DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: p133, !f132

ROOM THERMOSTAT OUTPUT VOLTAGE

KEEP BOILER CASE SWITCH DEPRESSED

Next: !p131, !f130

PUMP FLOW VALVE SPINDLE

{ISOLATEMAINSPOWER}
BOILER DRAINED AND DISCHARGED

Next: p135, !f134

PUMP FLOW VALVE DIAPHRAGM

{ISOLATEMAINSPOWER}
BOILER DRAINED AND DISCHARGED

Next: !p137, !f136

LIGHTER SWITCH CONTACTS 2 AND 4 RESISTANCE

{ISOLATEMAINSPOWER}

Next: p150, !f151

INTERMEDIATE SPARK CONNECTOR

{ISOLATEMAINSPOWER}

Next: !p152, !f153

CH BYPASS ADJUSTMENT

{ISOLATEMAINSPOWER}

Next: !p29, !f28

DHW FLOW VALVE PISTON

{ISOLATEMAINSPOWER}
TURN OFF MAINS WATER SUPPLY

Next: !p36, !f157

FUSE 3 AMP RESISTANCE

{ISOLATEMAINSPOWER}

Next: p45, !f44

MAINS POWER SUPPLY

ROTARY SWITCH IN OFF POSITION

Next: !p43, !f42

SLOW FAN VOLTAGE

ROTARY SWITCH IN DHW POSITION
KEEP BOILER CASE SWITCH DEPRESSED

Next: !p47, !f46

TRANSFORMER PRIMARY COIL RESISTANCE

{ISOLATEMAINSPOWER}

Next: p56, !f55

SPARK ELECTRODE LEAD

{ISOLATEMAINSPOWER}

Next: p149, !f57

THERMOCOUPLE MILLIVOLTAGE

ROTARY SWITCH IN DHW POSITION
KEEP GAS VALVE CONTROL KNOB DEPRESSED

Next: !p70, !f69

DHW FLOW VALVE SPINDLE

{ISOLATEMAINSPOWER}
WATER OFF
APPLIANCE DISCHARGED AND DRAINED

Next: p76, !f77

DHW FLOW VALVE DIAPHRAGM

{ISOLATEMAINSPOWER}
WATER OFF
APPLIANCE DISCHARGED AND DRAINED

Next: p79, !f78

MODULATION BOX

{ISOLATEMAINSPOWER}

Next: !p81, !f80

BURNER GAS PRESSURE (DHW DEMAND)

ROTARY SWITCH IN DHW

Next: !p104, f103

FUSE 0.25 AMP RESISTANCE

{ISOLATEMAINSPOWER}

Next: p92, !f91

FLUE

Next: !p90, !f89

CH LIMIT THERMOSTAT RESISTANCE

{ISOLATEMAINSPOWER}
ENSURE THE BOILER IS NOT IN AN OVERHEATED CONDITION

Next: p94, !f93

DHW LIMIT THERMOSTAT RESISTANCE

{ISOLATEMAINSPOWER}
ENSURE THE BOILER IS NOT IN AN OVERHEATED CONDITION

Next: p96, !f95

TRANSFORMER SECONDARY WINDING RESISTANCE

{ISOLATEMAINSPOWER}

Next: p98, !f156

DHW FLOW SWITCH CONTACTS B RESISTANCE (DHW DEMAND)

{ISOLATEMAINSPOWER}

Next: p100, !f99

System Information

  • Total Tests: 143
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control