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:

ARISTON DIA 24 MFFI CE

G.C. NUMBER 47 116 0

Next: &17, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

CH MODULATION

{ISOLATEMAINSPOWER}<

Next: &nff, f124

DHW MODULATION

{ISOLATEMAINSPOWER}<

Next: &1, f119

SYSTEM PRESSURE RISE

MAINS ISOLATOR SWITC

Next: &2, !f118

CENTRAL HEATING

MAINS ISOLATOR SWITC

Next: &3, ?108, ?110, ?112

HOT WATER

MAINS ISOLATOR SWITC

Next: &4, ?94, ?96, ?98

CH BURNER IGNITES

MAINS ISOLATOR SWITC

Next: &5, f89

DHW BURNER HIGH FLAME

{ISOLATEMAINSPOWER}<

Next: &6, f82

DHW FLAME SENSE

MAINS ISOLATOR SWITC

Next: &7, f79

DHW BURNER LOW FLAME

{ISOLATEMAINSPOWER}<

Next: &8, ?69, ?71, ?73

DHW FAN RUNS

MAINS ISOLATOR SWITC

Next: &134, f35

DHW MAIN FLOW SWITCH OPERATION

MAINS ISOLATOR SWITC

Next: &11, f14

DHW DEMAND

{ISOLATEMAINSPOWER}

Next: &12, f11

MAINS ISOLATOR SWITCH (ON/OFF SWITCH)

MAINS ISOLATOR SWITCH (ON/OFF SWITCH) IN ON POSITION

Next: &13, f8

DHW FLOW RATE

Next: &14, f3

SYSTEM CHECKS

{ISOLATEMAINSPOWER}

Next: &15, !f2

ARISTON DIA 24 MFFI CE

{ISOLATEMAINSPOWER}<

Next: &16, !f1

DHW SPARKING

MAINS ISOLATOR SWITC

Next: &9, f135

ELECTRICAL SAFETY CHECKS

ELECTRICAL CHECKS

Next: End

CH QUIET OPERATION

PROBE - TEMPERATURE CHW

Next: End

CH NOISY, DHW PREVIOUSLY OK

PROBE - TEMPERATURE CHW

Next: End

SYSTEM PRESSURE TEST

EXPANSION VESSEL

Next: End

DHW DEMAND

DIVERTER VALVE (WATER SECTION)

Next: End

DHW MODULATION

POTENTIOMETER - SPECIAL

Next: End

DHW MODULATION

PROBE - TEMPERATURE CHW (DHW)

Next: End

CH MODULATION

POTENTIOMETER SPECIAL

Next: End

CH MODULATION

PROBE - TEMPERATURE CHW

Next: End

FUSE F2

FAST FUSE 2AT

Next: End

DHW SPARKING

FLUE

Next: End

DHW SPARKING

PIPE SILICONE

Next: End

DHW SPARKING

VENTURI DEVICE

Next: End

TRANSFORMER OUTPUT VOLTAGE (5V)

PCB - SPECIAL

Next: End

IGNITION TRANSFORMER INPUT VOLTAGE

PCB - SPECIAL

Next: End

DHW SPARKING

CABLE - IGNITION ELECTRODE - SPECIAL

Next: End

DHW SPARKING

ELECTRODE - IGNITION

Next: End

MAINS SWITCH

SWITCH - ON /OFF

Next: End

MAINS SWITCH LED ONLY

SWITCH - ON /OFF

Next: End

DHW MAIN FLOW SWITCH OPERATION

OVERHEAT THERMOSTAT

Next: End

SYSTEM CHECKS

SYSTEM CHECKS

Next: End

DHW MAIN FLOW SWITCH OPERATION

SYSTEM PRESSURE

Next: End

FUSE F1

FAST FUSE 2AT

Next: End

DHW MAIN FLOW SWITCH OPERATION

MICROSWITCH UNIT - SPECIAL

Next: End

DHW PUMP RUNS

PCB - SPECIAL

Next: End

DHW FAN RUNS

PIPE SILICONE

Next: End

DHW FLOW RATE ADJUSTER

DIVERTER VAVE (DHW FLOW ADJUSTER)

Next: End

DHW FAN RUNS

VENTURI DEVICE

Next: End

DHW FAN RUNS

MICROSWITCH - MAIN CIRCUIT FLOW

Next: End

DHW FAN RUNS

PROBE - TEMPERATURE CHW

Next: End

DHW FAN RUNS

PROBE - TEMPERATURE CHW (DHW)

Next: End

DHW FAN RUNS

RESET BUTTON C/W WIRING

Next: End

DHW FLOW RATE ADJUSTER

DHW INLINE FILTER

Next: End

DHW BURNER LOW FLAME

PCB - SPECIAL

Next: End

DHW BURNER LOW FLAME

COILS - GAS VALVE OPERATOR

Next: End

DHW FLAME SENSE

ELECTRODE - DETECTION - CAST

Next: End

DHW BURNER HIGH FLAME

PROBE - TEMPERATURE CHW (DHW)

Next: End

DHW DHW BURNER HIGH FLAME

GAS VALVE MODUREG - SIT - TANDEM

Next: End

MAINS ISOLATOR SWITCH (ON/OFF SWITCH)

Next: End

CH BURNER IGNITES

Next: End

CH BURNER IGNITES

TIMER

Next: End

CENTRAL HEATING

HEAT EXCHANGER - DHW

Next: End

CH QUIET OPERATION

HEAT EXCHANGER - DHW

Next: End

HOT WATER

MAIN EXCHANGER

Next: End

CH NOISY, DHW PREVIOUSLY OK

HEAT EXCHANGER - DHW

Next: End

CH NOISY, DHW PREVIOUSLY NOISY

PROBE - TEMPERATURE CHW

Next: End

CH QUIET OPERATION

Next: End

CH NOISY, DHW PREVIOUSLY OK

Next: End

DHW MODULATION

PCB - SPECIAL

Next: End

CH MODULATION

PCB - SPECIAL

Next: End

DHW DEMAND

DIVERTER VALVE (SPINDLE)

Next: End

PUMP PRESSURE SWITCH VOLTAGE

PCB - SPECIAL

Next: End

DHW SPARKING

PRESSURE SWITCH AIR

Next: End

DHW SPARKING

IGNITION TRANSFORMER

Next: End

ON OFF SWITCH

SYSTEM CHECKS

Next: End

DHW MAIN FLOW SWITCH OPERATION

SERVICE KIT - MAIN CIRCUIT FLOW SWITCH - SPINDLE

Next: End

DHW MAIN FLOW SWITCH OPERATION

SERVICE KIT - MAIN CIRCUIT - DIAPHRAGM

Next: End

DHW MAIN FLOW SWITCH

CHW FLOW / RETURN GROUP

Next: End

DHW MAIN FLOW SWITCH OPERATION

PRESSURE SWITCH 1/4INCH

Next: End

DHW MAIN FLOW SWITCH OPERATION

PUMP

Next: End

DHW FAN RUNS

PRESSURE SWITCH AIR

Next: End

DHW FAN RUNS

FAN

Next: End

DHW FAN RUNS

PCB - SPECIAL

Next: End

DHW FLOW RATE ADJUSTER

HEAT EXCHANGER - DHW

Next: End

DHW BURNER LOW FLAME

CARTRIDGE - GAS MODULATOR

Next: End

DHW BURNER LOW FLAME

PACK 10 OFF INJECTORS

Next: End

DHW BURNER LOW FLAME

GAS VALVE - TANDEM - SIT

Next: End

DHW FLAME SENSE

PCB - SPECIAL

Next: End

DHW BURNER HIGH FLAME

PCB - SPECIAL

Next: End

DHW DHW BURNER HIGH FLAME

CARTRIDGE - GAS MODULATOR

Next: End

CH BURNER IGNITES

SWITCH COMMUTATOR - 3 POSITION

Next: End

DHW QUIET OPERATION, RADIATORS COLD

HEAT EXCHANGER - DHW

Next: End

HOT WATER

DIVERTER VALVE

Next: End

CH QUIET OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p103

CH NOISY, DHW PREVIOUSLY NOISY

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p105

CH NOISY, DHW PREVIOUSLY OK

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p107

CH QUIET OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: p109

CH NOISY, DHW PREVIOUSLY NOISY

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p111

CH NOISY, DHW PREVIOUSLY OK

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: p113

DIAPRAGM SPLIT OR DAMAGED

CHARACTERISTIC TEST FROM MAIN FLOW SWITCH DIAPHRAGM

Next: !p160

WEEP TUBE OR HOUSING RESTRICTED / BLOCKED

CHARACTERISTIC TEST FROM MAIN FLOW SWITCH DIAPHRAGM

Next: !p162

BURNER LIGHTS, BURNER PRESSURE GREATER THAN MINIMUM

CHARACTERISTIC TEST FROM DHW BURNER LOW FLAME

Next: !p70

BURNER DOES NOT LIGHT, BUT BURNER PRESSURE IS AT MINIMUM

CHARACTERISTIC TEST FROM DHW BURNER LOW FLAME

Next: !p72

BURNER DOES NOT LIGHT, NO BURNER PRESSURE

CHARACTERISTIC TEST FROM DHW BURNER LOW FLAME

Next: p74

DHW NOISY OPERATION

CHARACTERISTIC TEST FROM HOT WATER

Next: p95

DHW QUIET OPERATION, RADIATORS COLD

CHARACTERISTIC TEST FROM HOT WATER

Next: !p97

DHW QUIET, RADIATORS WARM

CHARACTERISTIC TEST FROM HOT WATER

Next: !p99

22/02/2018 11:16:02 1802_1_50_1 06/03/2018 13:34:03

23/02/2018 08:25:42

Next: End

WATER SECTION DIAPHRAGM

{ISOLATEMAINSPOWER}
MAINS WATER OFF AND BOILER DISCHARGED

Next: !p13, !f12

DHW POTENTIOMETER RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p121, !f120

CH POTENTIOMETER RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p126, !f125

AIR PRESSURE SWITCH: AIR DETECT

{ISOLATEMAINSPOWER}<

Next: p136, f137

FLUE

Next: p138, !f139

TRANSFORMER OUTPUT VOLTAGE (12V)

{ISOLATEMAINSPOWER}<

Next: p16, f15

PUMP PRESSURE SWITCH VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p18, f17

OVERHEAT THERMOSTAT VOLTAGE

MAINS ISOLATOR SWITCH (ON/OFF SWITCH) IN ON POSITION

Next: p20, !f19

DIVERTER VALVE MICROSWITCH RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE BOTH RED/BLACK WIRES FROM DIVERTER VALVE MICROSWITCH.

Next: p30, !f29

DHW FLOW ADJUSTER

{ISOLATEMAINSPOWER}

Next: p5, !f4

AIR PRESSURE SWITCH: NO AIR

{ISOLATEMAINSPOWER}<

Next: p37, f36

AIR PRESSURE SWITCH TUBES N.C.

{ISOLATEMAINSPOWER}

Next: p39, !f38

LOCKOUT RESET BUTTON RESISTANCE

{ISOLATEMAINSPOWER}<

Next: !p51, !f50

DHW FLAME SENSE VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p81, !f80

MAINS POWER SUPPLY

Next: p152, !f9

MODUREG SUPPLY VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p84, f83

DHW HIGH FLAME SENSOR PROBE RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED WIRES FROM DHW SENSOR PROBE

Next: !p86, !f85

ROOM THERMOSTAT/EXTERNAL CONTROLS

{ISOLATEMAINSPOWER}
ROOM THERMOSTAT CALLING FOR HEAT OR SHORTING LINK IN PLACE.

Next: p91, !f90

CH HIGH FLAME SENSOR PROBE RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT WHITE WIRES FROM CH SENSOR PROBE

Next: !p115, !f114

CH HIGH FLAME SENSOR PROBE RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT WHITE WIRES FROM CH SENSOR PROBE

Next: !p117, !f116

DHW MODULATION SENSOR PROBE RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED WIRES FROM DHW SENSOR PROBE

Next: !p123, !f122

CH MODULATION SENSOR PROBE RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT WHITE WIRES FROM CH SENSOR PROBE

Next: !p128, !f127

FUSE F2

{ISOLATEMAINSPOWER}
REMOVE FUSE F2 FROM PCB

Next: !p132, !f133

TRANSFORMER OUTPUT VOLTAGE (5V)

{ISOLATEMAINSPOWER}<

Next: p144, !f145

AIR PRESSURE SWITCH TUBES N.O.

{ISOLATEMAINSPOWER}

Next: p140, !f141

FLUE VENTURI

{ISOLATEMAINSPOWER}

Next: !p142, !f143

IGNITION TRANSFORMER INPUT VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p146, !f147

SPARK ELECTRODE LEADS

{ISOLATEMAINSPOWER}
DISCONNECT SPARK ELECTRODE LEADS FROM ELECTRODES AND PCB

Next: p148, !f149

ELECTRODE

{ISOLATEMAINSPOWER}
REMOVE FRONT COMBUSTION COVER AND INSULATION PANEL.

Next: !p150, !f151

RESISTANCE ON OFF SWITCH

{ISOLATEMAINSPOWER}<

Next: p153, !f154

INFORMATION MAINS POWER LED

TESTS INDICATE THE L

Next: !p155, !f156

MAIN FLOW SWITCH DIAPHRAGM

{ISOLATEMAINSPOWER}
BOILER DISCHARGED AND DRAINED

Next: !p158, ?159, ?161

DHW PUMP RUNS

MAINS ISOLATOR SWITC

Next: p157, f27

FUSE F1

{ISOLATEMAINSPOWER}
REMOVE THE FUSE F1 FROM PCB.

Next: p131, !f23

SYSTEM PRESSURE

{ISOLATEMAINSPOWER}

Next: !p22, !f21

WATER PUMP VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p32, !f31

MAIN FLOW SWITCH MICROSWITCH RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p43, !f42

FLUE VENTURI

{ISOLATEMAINSPOWER}

Next: !p41, !f40

CH SENSOR PROBE RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT WHITE WIRES FROM CH SENSOR PROBE

Next: p45, !f44

DHW SENSOR PROBE RESISTANCE

{ISOLATEMAINSPOWER}
DISCONNECT RED WIRES FROM DHW SENSOR PROBE

Next: p47, !f46

FAN VOLTAGE

MAINS ISOLATOR SWITC

Next: !p49, f48

DHW INLINE FILTER

{ISOLATEMAINSPOWER}

Next: !p7, !f6

GAS RELAY VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p76, !f75

GAS VALVE SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}<

Next: !p78, !f77

MODUREG SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}<

Next: !p88, !f87

TIMER

{ISOLATEMAINSPOWER}
ENSURE TIMER IS CALLING

Next: !p93, !f92

CENTRAL HEATING

MAINS ISOLATOR SWITC

Next: !p101, ?102, ?104, ?106

System Information

  • Total Tests: 154
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control