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:

VAILLANT VCW SINE 18

G.C. NUMBER 47 044 0

Next: &18, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

FLUE

Next: &nff, !f20

WATER PRESSURE RISE

{GASONPILOTON}
BO

Next: &1, !f21

CENTRAL HEATING OPERATION

{GASONPILOTON}
BO

Next: &2, ?137, ?139, ?141

HOT WATER

{GASONPILOTON}
BOILER ON/OFF SWITCH ON
CH SWITCH OFF
DHW SWITCH IN INSTANT POSITION

Next: &3, ?120, ?122, ?124

CH BURNER MODULATION

{GASONPILOTON}
BO

Next: &4, f107

CH BURNER IGNITES

{GASONPILOTON}
BO

Next: &5, f104

CH PUMP FLOW VALVE OPERATION

{GASONPILOTON}
BO

Next: &6, f99

DHW DIVERTER VALVE MICROSWITCH 2 RESISTANCE

Next: &7, !f98

DHW PUMP FLOW VALVE OPERATION

{GASONPILOTON}
BOILER ON/OFF SWITCH OFF
CH SWITCH OFF
DHW SWITCH IN INSTANT POSITION

Next: &19, f74

PUMP RUNS

{GASONPILOTON}
BO

Next: &9, f47

PILOT FLAME FAILURE

Next: &11, !f46

PILOT ESTABLISHES

Next: &12, f39

PILOT IGNITES

Next: &13, f34

SPARKING

Next: &14, f29

DHW FLOW RATE

Next: &15, f24

SYSTEM CHECKS

Next: &16, !f23

VAILLANT VCW SINE 18

G.C. NUMBER 47 044 0

Next: &17, !f22

DHW BURNER HIGH FLAME

{GASONPILOTON}
BO

Next: &8, f81

CH PUMP FLOW VALVE OPERATION

SWITCH PCB

Next: End

CH PUMP FLOW VALVE OPERATION

Next: End

CH BURNER IGNITES

DIVERTER VALVE MICROSWITCHES

Next: End

CH BURNER MODULATION

DIVERTER VALVE

Next: End

CH BURNER MODULATION

SENSOR

Next: End

CH BURNER MODULATION

SOLENOID

Next: End

BLOCKED OR SCALED

PRIMARY HEAT EXCHANGER

Next: End

FLUE

Next: End

WATER PRESSURE RISE

EXPANSION VESSEL

Next: End

ELECTRICAL CHECKS

Next: End

SYSTEM CHECKS

Next: End

DHW FLOW RATE

DHW INLET FILTER

Next: End

DHW FLOW RATE

DHW FLOW RESTRICTOR

Next: End

SPARKING

SPARK ELECTRODE

Next: End

SPARKING

SPARK ELECTRODE LEAD

Next: End

PILOT IGNITES

PILOT INJECTOR

Next: End

PILOT IGNITES

PILOT FILTER

Next: End

PILOT ESTABLISHES

PILOT FILTER

Next: End

PILOT FLAME FAILURE

PILOT VALVE

Next: End

PUMP RUNS

FUSES

Next: End

PUMP RUNS

Next: End

PUMP RUNS

DIVERTER VALVE

Next: End

PUMP RUNS

OVERHEAT THERMOSTAT

Next: End

PUMP RUNS

WATER VALVE DIAPHRAGM

Next: End

PUMP RUNS

SWITCH PCB

Next: End

PUMP RUNS

PILOT MICROSWITCH

Next: End

DHW PUMP PLOW VALVE OPERATION

PUMP FLOW VALVE PIPES

Next: End

DHW PUMP VALVE OPERATION

VENTURI

Next: End

DHW PUMP FLOW VALVE OPERATION

PUMP FLOW VALVE DIAPHRAGM

Next: End

DHW BURNER HIGH FLAME

DIVERTER VALVE MICROSWITCHES

Next: End

DHW BURNER HIGH FLAME

SENSOR

Next: End

DHW BURNER HIGH FLAME

PCB FUSE

Next: End

DHW BURNER HIGH FLAME

WATER VALVE MICROSWITCH

Next: End

DHW BURNER HIGH FLAME

PILOT MICROSWITCH

Next: End

DHW BURNER HIGH FLAME

SOLENOID

Next: End

DHW DIVERTER VALVE MICROSWITCH 2 RESISTANCE

DIVERTER VALVE MICROSWITCHES

Next: End

CH PUMP FLOW VALVE OPERATION

OVERRUN SWITCH CONNECTION

Next: End

CH BURNER IGNITES

SOLENOID MICROSWITCH

Next: End

CH BURNER MODULATION

DIVERTER VALVE MICROSWITCHES

Next: End

CH BURNER MODULATION

WAX CAPSULE

Next: End

CH BURNER MODULATION

CONTROL PCB

Next: End

CH BURNER MODULATION

GAS VALVE

Next: End

HW QUIET OPERATION,RADS COLD

SECONDARY HEAT EXCHANGER

Next: End

HW QUIET OPERATION, RADS WARM

DIVERTER VALVE

Next: End

CENTRAL HEATING OPERATION

DIVERTER VALVE

Next: End

CENTRAL HEATING OPERATION

Next: End

PILOT MICROSWITCH 1 RESISTANCE

SWITCH PCB

Next: End

FUSES 2 AMP

SWITCH PCB

Next: End

CH QUIET OPERATION, FLOW HOT

Next: End

SCALED OR BLOCKED

SECONDARY HEAT EXCHANGER

Next: End

DHW FLOW RATE

SECONDARY HEAT EXCHANGER

Next: End

SPARKING

PIEZO IGNITER

Next: End

PILOT IGNITES

PILOT VALVE

Next: End

PILOT ESTABLISHES

MAG VALVE

Next: End

PILOT ESTABLISHES

THERMOCOUPLE

Next: End

PUMP RUNS

WAX CAPSULE

Next: End

PUMP RUNS

DIVERTER VALVE MICROSWITCHES

Next: End

PUMP RUNS

WATER VALVE MICROSWITCH

Next: End

PUMP RUNS

WATER VALVE

Next: End

PUMP RUNS

PUMP

Next: End

DHW PUMP FLOW VALVE OPERATION

PUMP FLOW VALVE

Next: End

DHW BURNER HIGH FLAME

CONTROL PCB

Next: End

DHW BURNER HIGH FLAME

BURNER INJECTORS

Next: End

DHW BURNER HIGH FLAME

GAS VALVE

Next: End

BOILER NOISY WHEN HOT WATER OPERATES

CHARACTERISTIC TEST FROM HOT WATER

Next: p143

POOR HW, QUIET OPERATION, RADS COLD

CHARACTERISTIC TEST FROM HOT WATER

Next: !p123

HW QUIET OPERATION, RADS WARM

CHARACTERISTIC TEST FROM HOT WATER

Next: !p125

CH NOISY HEAT EXCHANGER, HW PREVIOUSLY QUIET

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p161

CH QUIET OPERATION, FLOW COLD

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p140

CH QUIET OPERATION, FLOW HOT

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p142

31/12/2014 13:41:27 1409_1_50_1 12/05/2015 10:44:14

31/12/2014 15:07:10

Next: End

DIVERTER VALVE MICROSWITCH OPERATION

ENSURE THE BURNER HA

Next: !p106, !f105

CH DIVERTER VALVE MICROSWITCH 2 RESISTANCE

REMOVE THE DIVERTER

Next: p109, f108

CH DIVERTER VALVE OPERATION

REMOVE DIVERTER VALV

Next: !p111, f110

CH DIVERTER VALVE OPEN

DISCHARGE AND DRAIN

Next: !p113, !f112

SENSOR MODULATION RESISTANCE

BOILER AT OPERATING TEMPERATURE

Next: !p117, !f116

DHW INLET FILTER

WATER OFF

Next: p26, !f25

SPARK ELECTRODE

Next: p31, !f30

PILOT INJECTOR

Next: p36, !f35

THERMOCOUPLE MILLIVOLTAGE

Next: !p43, f42

PILOT FILTER

Next: !p45, !f44

DHW DIVERTER VALVE MICROSWITCH 1 OUTPUT VOLTAGE

BOILER ON/OFF SWITCH

Next: p49, f48

ON/OFF SWITCH OUTPUT VOLTAGE

BOILER ON/OFF SWITCH ON
CH SWITCH OFF
DHW SWITCH IN INSTANT POSITION

Next: p51, f50

FUSES 2 AMP

Next: p53, !f52

DHW DIVERTER VALVE CLOSES

DISCHARGE AND DRAIN

Next: !p59, !f58

WATER VALVE OPERATION

Next: !p65, f64

WATER VALVE DIAPHRAGM

WATER OFF

Next: !p67, !f66

PILOT MICROSWITCH 1 RESISTANCE

{GASONPILOTON}

Next: !p158, !f72

PUMP FLOW VALVE PIPES

DRAIN AND DISCHARGE BOILER

Next: p75, !f76

DHW GAS VALVE VOLTAGE

{GASONPILOTON}
BOILER ON/OFF SWITCH ON
CH SWITCH OFF
DHW SWITCH IN INSTANT POSITION

Next: p83, f82

DHW DIVERTER VALVE MICROSWITCH 2 OPERATION

Next: p85, !f84

SOLENOID OPERATION

{GASONPILOTON}
BO

Next: !p97, !f96

CH SWITCH OUTPUT VOLTAGE (CH ON)

BOILER ON/OFF SWITCH

Next: p101, !f100

ROOM THERMOSTAT OUTPUT VOLTAGE

BOILER ON/OFF SWITCH ON
CH SWITCH ON
DHW SWITCH IN INSTANT POSITION

Next: !p103, !f102

CH MODULATION VOLTAGE

{GASONPILOTON}
BO

Next: p115, f114

SOLENOID OPERATION

{GASONPILOTON}
BO

Next: !p119, !f118

OPERATION CH (DHW NOISY)

{GASONPILOTON}
BO

Next: !p171, !f172

DHW FLOW RESTRICTOR

WATER OFF

Next: !p28, !f27

SPARK ELECTRODE LEAD

Next: !p33, !f32

PILOT FILTER

Next: !p38, !f37

DHW WATER VALVE MICROSWITCH RESISTANCES

Next: p63, f62

DHW DIVERTER VALVE OPERATION

REMOVE DIVERTER VALVE MICROSWITCH COVER

Next: p57, f56

MAINS POWER SUPPLY

BOILER ON/OFF SWITCH OFF

Next: !p159, !f54

OVERHEAT THERMOSTAT RESISTANCE

Next: !p61, !f60

CH SWITCH OUTPUT VOLTAGE (CH OFF)

BOILER ON/OFF SWITCH

Next: p69, !f68

DHW PUMP VOLTAGE

{GASONPILOTON}
BO

Next: !p71, f70

VENTURI

BOILER DRAINED AND DISCHARGED

Next: p78, !f77

PUMP FLOW VALVE DIAPHRAGM

BOILER DRAINED AND DISCHARGED

Next: !p80, !f79

DHW BURNER GAS PRESSURE

BOILER ON/OFF SWITCH

Next: !p95, f94

SENSOR RESISTANCE

ENSURE BOILER IS COOL

Next: p87, !f86

PCB FUSE

Next: p89, !f88

DHW WATER VALVE MICROSWITCH RESISTANCES

Next: p91, !f90

PILOT MICROSWITCH 2 RESISTANCE

{GASONPILOTON}

Next: !p93, !f92

System Information

Total Tests: 133
Sequence Logic: Decoded from encrypted .seq file
Navigation: Dynamic based on pass/fail results
Source: 4731307 GW SWIFTFLOW 100 SIT Control