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:

EUROCOMBI STYX SX 20 MFFICE

WARNING - IMPORTA

Next: &17, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

EXPANSION VESSEL

MODE SELECTOR SWITCH TO CH POSITION

Next: &nff, !f18

CENTRAL HEATING OPERATION

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: &1, ?125, ?127

HOT WATER

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: &2, ?113, ?115, ?117

CH MODULATION

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: &3, f110

CH BURNER IGNITES

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: &4, !f109

CH FAN RUNS

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: &5, !f108

CH MAIN FLOW SWITCH OPERATION

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: &6, f103

DHW MODULATION

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: &7, f94

DHW FLAME SENSE

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: &8, f91

DHW BURNER IGNITES

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: &9, ?59, ?61

DHW FAN RUNS

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: &10, f45

DHW MAIN FLOW SWITCH OPERATION

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: &11, f30

DHW DEMAND

Next: &12, f25

MAINS SWITCH

Next: &13, f22

COMPENSATION TUBE

Next: &14, !f21

EUROCOMBI STYX SX 20 MFFICE

G.C. NUMBER 47 11

Next: &15, !f19

DHW MODULATION

MODULATION SOLENOID

Next: End

CH MAIN FLOW SWITCH OPERATION

SUMMER/WINTER SWITCH

Next: End

CH FAN RUNS

CH THERMOSTAT

Next: End

CH BURNER IGNITES

CH THERMOSTAT

Next: End

CH MODULATION

DHW MICROSWITCHES

Next: End

DHW BURNER IGNITES

SPARK ELECTRODE LEADS

Next: End

MAINS SWITCH

ON/OFF SWITCH

Next: End

MAINS SWITCH LED ONLY

ON/OFF SWITCH

Next: End

EXPANSION VESSEL

EXPANSION VESSEL

Next: End

ELECTRICAL CHECK

ELECTRICAL CHECK

Next: End

WEAK OR SLOW

WATER PUMP

Next: End

COMPENSATION TUBE

COMPENSATION TUBE

Next: End

MAINS SWITCH

Next: End

DHW DEMAND

DHW FLOW ADJUSTMENT

Next: End

DHW MAIN FLOW SWITCH OPERATION

FUSE 2A LIVE

Next: End

DHW MAIN FLOW SWITCH OPERATION

OVERHEAT THERMOSTAT

Next: End

DHW MAIN FLOW SWITCH OPERATION

SYSTEM PRESSURE

Next: End

DHW MAIN FLOW SWITCH OPERATION

DHW MICROSWITCHES

Next: End

DHW MAIN FLOW SWITCH OPERATION

FUSE 2A NEUTRAL

Next: End

DHW FAN RUNS

DHW MICROSWITCHES

Next: End

DHW FAN RUNS

LIMIT THERMOSTAT

Next: End

DHW FAN RUNS

AIR PRESSURE SWITCH

Next: End

DHW FAN RUNS

LOCKOUT RESET SWITCH

Next: End

NO SPARKING OBSERVED

AIR PRESSURE SWITCH TUBE

Next: End

NO SPARKING OBSERVED

FLUE

Next: End

NO SPARKING OBSERVED

FLUE VENTURI

Next: End

SPARKING OBSERVED

AIR PRESSURE SWITCH TUBE

Next: End

SPARKING OBSERVED

FLUE

Next: End

SPARKING OBSERVED

FLUE VENTURI

Next: End

SPARKING OBSERVED

PRINTED CIRCUIT BOARD - PCB

Next: End

DHW BURNER IGNITES

GAS VALVE OPERATOR SOLENOIDS

Next: End

DHW BURNER IGNITES

GAS VALVE ASSEMBLY

Next: End

DHW FLAME SENSE

SENSE ELECTRODE

Next: End

DHW MODULATION

PRINTED CIRCUIT BOARD - PCB

Next: End

DHW MODULATION

DHW THERMOSTAT

Next: End

DHW MODULATION

GAS VALVE ASSEMBLY

Next: End

CH MAIN FLOW SWITCH OPERATION

ROOM THERMOSTAT/LINK

Next: End

CH MAIN FLOW SWITCH OPERATION

PROGRAMMER

Next: End

CH MODULATION

CH THERMOSTAT

Next: End

HOT WATER

SECONDARY HEAT EXCHANGER

Next: End

HOT WATER

DIVERTER VALVE

Next: End

CENTRAL HEATING OPERATION

SECONDARY HEAT EXCHANGER

Next: End

HOT WATER

PRIMARY HEAT EXCHANGER

Next: End

CENTRAL HEATING OPERATION

Next: End

CENTRAL HEATING OPERATION NOISY

Next: End

DHW BURNER INGNITES

SPARK ELECTRODES

Next: End

IGNITION VOLTAGE (FAIL)

PRINTED CIRCUIT BOARD - PCB

Next: End

SYSTEM CHECKS

SYSTEM CHECKS

Next: End

DHW MAIN FLOW SWITCH

SLUDGE

Next: End

DHW MAIN FLOW SWITCH OPERATION

MAIN FLOW SWITCH

Next: End

DHW MAIN FLOW SWITCH

DIAPHRAGM

Next: End

DHW MAIN FLOW SWTICH OPERATION

SERVICE KIT

Next: End

DHW DEMAND

DIVERTER VALVE DIAPHRAGM/SPINDLE

Next: End

SECONDARY HEAT EXCHANGER - SCALED

SECONDARY HEAT EXCHANGER - SCALED

Next: End

DHW MAIN FLOW SWITCH OPERATION

PUMP PRESSURE SWITCH

Next: End

DHW MAIN FLOW SWITCH OPERATION

WATER PUMP

Next: End

DHW FAN RUNS

MAIN FLOW MICROSWITCH

Next: End

DHW FAN RUNS

FAN

Next: End

DHW FAN RUNS

PRINTED CIRCUIT BOARD - PCB

Next: End

NO SPARKING OBSERVED

AIR PRESSURE SWITCH

Next: End

SPARKING OBSERVED

AIR PRESSURE SWITCH

Next: End

DHW BURNER IGNITES

BURNER INJECTORS

Next: End

DHW FLAME SENSE

PRINTED CIRCUIT BOARD - PCB

Next: End

DHW MODULATION

DHW MICROSWITCHES

Next: End

DHW NOISY OPERATION

CHARACTERISTIC TEST FROM HOT WATER

Next: p114

DHW QUIET OPERATION, COLD RADIATORS

CHARACTERISTIC TEST FROM HOT WATER

Next: !p116

DHW QUIET OPERATION, WARM RADIATORS

CHARACTERISTIC TEST FROM HOT WATER

Next: !p118

CH NOISY OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p122

CH NOISY OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p129

CH QUIET OPERATION

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: !p128

FLOW SWITCH BODY DAMAGED

CHARACTERISTIC TEST FROM INSPECTION FLOW DIAPHRAGM

Next: !p179

DIAPHRAGM SPLIT OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION FLOW DIAPHRAGM

Next: !p181

SPRING OR SPINDLE DAMAGED

CHARACTERISTIC TEST FROM INSPECTION FLOW DIAPHRAGM

Next: !p183

NO SPARKING OBSERVED

CHARACTERISTIC TEST FROM DHW BURNER IGNITES

Next: p60

SPARKING OBSERVED

CHARACTERISTIC TEST FROM DHW BURNER IGNITES

Next: p62

18/10/2017 08:57:14 1712_1_50_1 31/01/2018 09:56:55

08/01/2018 14:06:55

Next: End

PROGRAMMER

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: !p105, f104

SELECTOR SWITCH

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: !p107, !f106

CH THERMOSTAT VOLTAGE IN

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: !p112, !f111

SPARK ELECTRODE LEAD RESISTANCE

DISCONNECT BOTH ELECTRODE LEADS FROM THE PCB AND SPARK ELECTRODES

Next: !p148, !f147

MAINS POWER SUPPLY

{GAINPCBACS}

Next: p150, !f23

DHW MIN FLOW RATE

Next: !p27, f26

DHW FLOW SETTING

TURN ON HW TAP FULLY

Next: !p29, !f28

DEMAND VOLTAGE

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p32, f31

FUSE F1 2A (L)

REMOVE THE FUSE F1 FROM PCB

Next: p34, !f33

DHW PUMP VOLTAGE

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p42, !f41

MAIN FLOW MICRO-SWITCH

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p47, f46

DHW START VOLTAGE

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p49, !f48

LOCKOUT RESET SWITCH

Next: !p57, !f56

AIR PRESSURE SWITCH TUBES

Next: p66, !f65

AIR PRESSURE SWITCH TUBES

Next: p80, !f79

SENSE VOLTAGE

SELECTOR SWITCH IN D

Next: !p93, !f92

DHW THERMOSTAT VOLTAGE IN

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p96, f95

24V DC SUPPLY

SELECTOR SWITCH IN D

Next: !p98, !f97

MODULATION COIL RESISTANCE

REMOVE BOTH WIRES FROM MODULATION COIL

Next: !p102, !f101

CENTRAL HEATING OPERATION

SELECTOR SWITCH IN CH/DHW WINTER POSITION
HEATING THERMOSTAT SET TO MAXIMUM

Next: !p120, ?121

SPARK ELECTRODE LEADS

SELECTOR SWITCH IN D

Next: !p131, f142

RESISTANCE ON OFF SWITCH

DISCONNECT THE LEADS FROM THE ON/OFF SWITCH, NOTING THEIR CONNECTIONS
ON/OFF SWITCH ON

Next: p153, !f152

INFORMATION MAINS POWER LED

TESTS INDICATE THE L

Next: !p154, !f155

INSPECTION FLOW DIAPHRAGM

BOILER PRIMARY CIRCUIT DRAINED
REMOVE THE FLOW SWITCH ASSEMBLY FROM THE BOILER

Next: !p177, ?178, ?180, ?182

PUMP LIMPET

Next: p171, !f193

DHW PUMP RUNS

REMOVE PUMP SCREW
SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p184, f39

OVERHEAT THERMOSTAT VOLTAGE

Next: p36, !f35

SYSTEM PRESSURE

Next: !p38, !f37

FUSE F2 2A (N)

REMOVE FUSE F2 FROM PCB

Next: !p44, !f43

AIR PRESSURE SWITCH: NO AIR RESISTANCE

REMOVE THE THREE WIRES FROM THE AIR PRESSURE SWITCH NOTING THEIR POSITIONS.

Next: p53, !f52

LIMIT THERMOSTAT

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: !p51, !f50

FAN RELAY

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: !p55, f54

AIR PRESSURE TEST: AIR DETECT

SELECTOR SWITCH IN D

Next: p130, f63

AIR PRESSURE TEST: AIR DETECT

SELECTOR SWITCH IN D

Next: p78, f77

FLUE ASSEMBLY

Next: p68, !f67

FLUE VENTURI

Next: !p70, !f69

IGNITION VOLTAGE

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p86, !f85

FLUE ASSEMBLY

Next: p82, !f81

FLUE VENTURI

Next: !p84, !f83

GV OPERATOR SOLENOID RESISTANCE

REMOVE THE TWO RED WIRES FROM EV1 AND EV2 AND THE BLUE WIRE ON COM

Next: p88, !f87

BURNER PRESSURE

ATTACH U GAUGE TO BU

Next: !p90, !f89

DHW THERMOSTAT VOLTAGE OUT

SELECTOR SWITCH IN DHW SUMMER POSITION
HOT WATER THERMOSTAT SET TO MAXIMUM

Next: p100, !f99

System Information

Total Tests: 136

Sequence Logic: Decoded from encrypted .seq file

Navigation: Dynamic based on pass/fail results

Source: 4731307 GW SWIFTFLOW 100 SIT Control