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 ENVOY 50

GC NUMBER 41 607 62<

Next: &14, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

RE-IGNITE DELAY

Next: &nff, !f15

PUMP OVERRUN

Next: &1, !f151

FROST PROTECTION

Next: &2, !f150

MODULATION

Next: &3, f18

CENTRAL HEATING OPERATION

Next: &4, ?119, ?121, ?123, ?125, ?127

BURNER ESTABLISHED

Next: &5, ?111, ?113

BURNER IGNITES

Next: &6, ?81, ?83

FAN RUNS (LOW POSITION)

Next: &7, ?73, ?75

FAN RUNS (HIGH POSITION)

Next: &8, ?55, ?57

DISPLAY SHOWS '0', '1', '2' OR 'H'

SET THE BOILER CONTROL SWITCH TO O POSITION

Next: &9, ?29, ?31, ?33, ?35, ?37, ?39

DISPLAY ILLUMINATES

SET THE BOILER CONTROL SWITCH TO O POSITION

Next: &10, f24

INFORMATION

{ISOLATEMAINSPOWER}

Next: &11, !f23

SYSTEM CHECKS

{ISOLATEMAINSPOWER}
ENSURE THE FOLLOWING SYSTEM CHECKS ARE COMPLETED

Next: &12, !f22

POTTERTON ENVOY 50

{ISOLATEMAINSPOWER}<

Next: &13, !f21

BURNER IGNITES

CONDENSATE PIPE

Next: End

BURNER IGNITES

GAS VALVE SOLENOID EV1

Next: End

BURNER IGNITES

SOLENOID OPERATOR

Next: End

BURNER ESTABLISHED

FLAME DETECTION ELECTRODE LEAD

Next: End

BOILER NOISY

CONDENSATE PIPE

Next: End

BOILER NOISY

SYPHON

Next: End

CENTRAL HEATING OPERATION

CONTROL ASSEMBLY

Next: End

CENTRAL HEATING OPERATION

SIGHT GLASS

Next: End

CENTRAL HEATING OPERATION

FLUE HOOD/ELBOW SEALING RING

Next: End

PRESSURE LESS THAN +12MBAR

FLUE

Next: End

NEGATIVE PRESSURE ONLY

CONTROL ASSEMBLY

Next: End

BURNER ESTABLISHED

CONTROL ASSEMBLY

Next: End

RE-IGNITE DELAY

CONTROL ASSEMBLY

Next: End

FROST PROTECTION

CONTROL ASSEMBLY

Next: End

PUMP OVERRUN

CONTROL ASSEMBLY

Next: End

DISPLAY BOARD SHOWS 'C'

CONDENSATE PIPE

Next: End

CENTRAL HEATING OPERATION

FLUE

Next: End

HOT SURFACE IGNITOR

CONTROL ASSEMBLY

Next: End

CENTRAL HEATING OPERATION

GAS VALVE ARRANGEMENT (GAS RATE)

Next: End

NO GAS

IMPULSE TUBE

Next: End

NEGATIVE ONLY

IMPULSE TUBE

Next: End

MODULATION

THERMISTOR (FLOW SENSOR)

Next: End

ELECTRICAL SAFETY CHECKS

ELECTRICAL CHECKS

Next: End

SYSTEM CHECKS

SYSTEM CHECKS

Next: End

INFORMATION

INCORRECT USE OF 'FAIL'

Next: End

DISPLAY ILLUMINATES

Next: End

DISPLAY ILLUMINATES

FUSE T3A

Next: End

DISPLAY SHOWS '0', '1', '2' OR 'H'

THERMISTOR (FLOW SENSOR)

Next: End

DISPLAY SHOWS '0', '1', '2' OR 'H'

THERMISTOR (RETURN SENSOR)

Next: End

DISPLAY SHOWS '0', '1', '2' OR 'H'

THERMISTOR (CASE SENSOR)

Next: End

DISPLAY SHOWS '0', '1', '2' OR 'H'

THERMISTOR (DRY FIRE SENSOR)

Next: End

DISPLAY SHOWS '0', '1', '2' OR 'H'

FLAME DETECTION ELECTRODE LEAD

Next: End

DISPLAY SHOWS '0', '1', '2' OR 'H'

REVERSE POLARITY

Next: End

DISPLAY SHOWS '0', '1', '2' OR 'H'

BOILER CONTROL SWITCH (3 POSITION)

Next: End

FAN RUNS (HIGH POSITION)

WIRING LOOM

Next: End

FAN RUNS (HIGH POSITION)

Next: End

FAN RUNS (HIGH POSITION)

BOILER CONTROL SWITCH (3 POSITION)

Next: End

FAN RUNS (HIGH POSITION)

CONTROL ASSEMBLY

Next: End

FAN RUNS (HIGH POSITION)

SENSOR FIXING AND HEAT SINK COMPOUND

Next: End

BURNER IGNITES

BURNER INJECTOR

Next: End

BURNER IGNITES

SYPHON

Next: End

NEGATIVE PRESSURE ONLY

GAS VALVE ARRANGEMENT

Next: End

BURNER ESTABLISHED

GAS VALVE ARRANGEMENT

Next: End

BURNER ESTABLISHED

FLAME DETECTION ELECTRODE

Next: End

CENTRAL HEATING OPERATION

HEAT EXCHANGER

Next: End

BOILER QUIET

Next: End

DISPLAY BOARD SHOWS '1', '2' OR 'H'

Next: End

CENTRAL HEATING OPERATION

PUMP (EXTERNAL)

Next: End

CENTRAL HEATING OPERATION

GASKETS

Next: End

DISPLAY BOARD SHOWS 'C'

SYPHON

Next: End

NO PRESSURE, U-GAUGE RECORDS 0 PRESSURE

FLUE

Next: End

MODULATION

CONTROL ASSEMBLY

Next: End

DISPLAY ILLUMINATES

CONTROL ASSEMBLY

Next: End

DISPLAY BOARD SHOWS '5'

CONTROL ASSEMBLY

Next: End

DISPLAY BOARD SHOWS '6'

CONTROL ASSEMBLY

Next: End

DISPLAY BOARD SHOWS '7'

CONTROL ASSEMBLY

Next: End

DISPLAY BOARD SHOWS '8'

CONTROL ASSEMBLY

Next: End

DISPLAY BOARD SHOWS 'A'

FLAME DETECTION ELECTRODE

Next: End

DISPLAY BOARD SHOWS ANY OTHER DISPLAY

CONTROL ASSEMBLY

Next: End

FAN RUNS (HIGH POSITION)

FAN

Next: End

FAN RUNS (HIGH POSITION)

PUMP (EXTERNAL)

Next: End

FAN RUNS (HIGH POSITION)

Next: End

FAN RUNS (LOW POSITION)

FAN

Next: End

FAN RUNS (LOW POSITION)

BOILER CONTROL SWITCH (3 POSITION)

Next: End

DISPLAY BOARD SHOWS NON-FLASHING 'F'

GAS VALVE ARRANGEMENT

Next: End

BURNER IGNITES

BURNER

Next: End

BURNER IGNITES

HOT SURFACE IGNITER

Next: End

DISPLAY BOARD SHOWS FLASHING 'F'

CHARACTERISTIC TEST FROM BURNER ESTABLISHED

Next: p112

DISPLAY BOARD SHOWS NON-FLASHING 'F'

CHARACTERISTIC TEST FROM BURNER ESTABLISHED

Next: !p114

BOILER NOISY

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: p120

BOILER QUIET

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: p122

DISPLAY BOARD SHOWS '1', '2' OR 'H'

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: p124

DISPLAY BOARD SHOWS '3'

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: p126

DISPLAY BOARD SHOWS 'C'

CHARACTERISTIC TEST FROM CENTRAL HEATING OPERATION

Next: p128

DISPLAY BOARD SHOWS '5'

CHARACTERISTIC TEST FROM DISPLAY SHOWS '0', '1', '2' OR 'H'

Next: p30

DISPLAY BOARD SHOWS '6'

CHARACTERISTIC TEST FROM DISPLAY SHOWS '0', '1', '2' OR 'H'

Next: p32

DISPLAY BOARD SHOWS '7'

CHARACTERISTIC TEST FROM DISPLAY SHOWS '0', '1', '2' OR 'H'

Next: p34

DISPLAY BOARD SHOWS '8'

CHARACTERISTIC TEST FROM DISPLAY SHOWS '0', '1', '2' OR 'H'

Next: p36

DISPLAY BOARD SHOWS 'A'

CHARACTERISTIC TEST FROM DISPLAY SHOWS '0', '1', '2' OR 'H'

Next: p38

DISPLAY BOARD SHOWS ANY OTHER DISPLAY

CHARACTERISTIC TEST FROM DISPLAY SHOWS '0', '1', '2' OR 'H'

Next: p40

DISPLAY BOARD SHOWS '0', '1', '2' OR 'H'

CHARACTERISTIC TEST FROM FAN RUNS (HIGH POSITION)

Next: p56

DISPLAY BOARD SHOWS ANY OTHER DISPLAY

CHARACTERISTIC TEST FROM DISPLAY SHOWS '0', '1', '2' OR 'H'

Next: p58

DISPLAY BOARD SHOWS '9'

CHARACTERISTIC TEST FROM FAN RUNS (LOW POSITION)

Next: !p74

FAN DOES NOT RUN

CHARACTERISTIC TEST FROM FAN RUNS (LOW POSITION)

Next: !p76

BURNER DOES NOT IGNITE AND DISPLAY BOARD SHOWS FLASHING F

CHARACTERISTIC TEST FROM BURNER IGNITES

Next: p82

BURNER DOES NOT IGNITE AND DISPLAY BOARD SHOWS NON-FLASHING F

CHARACTERISTIC TEST FROM BURNER IGNITES

Next: !p84

PRESSURE LESS THAN +11.8 MBAR

CHARACTERISTIC TEST FROM GAS VALVE IGNITION PRESSURE

Next: p89

NEGATIVE PRESSURE ONLY

CHARACTERISTIC TEST FROM GAS VALVE IGNITION PRESSURE

Next: p162

NO PRESSURE, U-GAUGE RECORDS 0 PRESSURE

CHARACTERISTIC TEST FROM GAS VALVE IGNITION PRESSURE

Next: p159

NO NEGATIVE PRESSURE AND ABOVE +16MBAR

CHARACTERISTIC TEST FROM GAS VALVE IGNITION PRESSURE

Next: !p100

10/07/2014 09:06:28 1712_1_50_1 09/01/2018 08:43:41

15/12/2017 09:28:56

Next: End

VOLTAGE TO PUMP

{ISOLATEMAINSPOWER}<

Next: !p139, !f138

FLOW SENSOR RESISTANCE (CALLING OR MODULATION)

{ISOLATEMAINSPOWER}
REMOVE FUNCTIONAL CASE DOOR
REMOVE THE RED WIRES FROM THE FLOW SENSOR

Next: !p20, !f19

MAINS POWER SUPPLY

{ISOLATEMAINSPOWER}<

Next: p26, !f25

EXTERNAL CONTROLS/ROOM THERMOSTAT VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p66, !f64

IGNITER VOLTAGE

{ISOLATEMAINSPOWER}<

Next: !p98, !f157

FLUE

Next: !p104, !f147

GAS VALVE 1 SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE BLACK PLUG FROM THE LOWER SOLENOID ON GAS VALVE

Next: p108, !f107

GAS VALVE 2 SOLENOID RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE BLACK PLUG FROM THE UPPER SOLENOID ON THE GAS VALVE

Next: !p110, !f109

FLAME DETECT VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p116, !f149

FLAME DETECT LEAD RESISTANCE

{ISOLATEMAINSPOWER}<

Next: !p118, !f117

CONDENSATE PIPE

Next: p130, !f129

GAS RATE

Next: !p135, !f158

EXTERNAL PUMP RUNS

SET BOILER CONTROL SWITCH TO H POSITION

Next: !p137, f136

SIGHT GLASS

{ISOLATEMAINSPOWER}
REMOVE THE FUNCTIONAL CASE DOOR

Next: p141, !f140

CONDENSATE PIPE

Next: p152, !f153

SYPHON

{ISOLATEMAINSPOWER}
REMOVE THE FUNCTIONAL CASE DOOR

Next: !p133, !f132

FLUE HOOD/ELBOW SEALING RING

{ISOLATEMAINSPOWER}
REMOVE THE FUNCTIONAL CASE DOOR

Next: !p143, !f142

FLUE

Next: !p154, !f155

INSPECTION IMPULSE TUBE

{ISOLATEMAINSPOWER}
REMOVE IMPULSE TUBE FROM GAS VALVE TO FAN

Next: !p160, !f161

INSPECTION IMPULSE TUBE

{ISOLATEMAINSPOWER}
REMOVE IMPULSE TUBE FROM GAS VALVE TO FAN

Next: p91, !f170

FUSE (T3) RESISTANCE

{ISOLATEMAINSPOWER}<

Next: !p28, !f27

FLOW SENSOR RESISTANCE (CALLING OR MODULATION)

{ISOLATEMAINSPOWER}
REMOVE FUNCTIONAL CASE DOOR
REMOVE THE RED WIRES FROM THE FLOW SENSOR

Next: !p42, !f41

RETURN SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE FUNCTIONAL CASE DOOR
REMOVE THE ORANGE LEADS FROM THE SENSOR

Next: !p44, !f43

CASE SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE FUNCTIONAL CASE DOOR
REMOVE THE YELLOW WIRES FROM THE CASE SENSOR

Next: !p46, !f45

DRY FIRE SENSOR RESISTANCE

{ISOLATEMAINSPOWER}
REMOVE FUNCTIONAL CASE DOOR
REMOVE THE GREY WIRES FROM THE DRY FIRE SENSOR

Next: !p48, !f47

FLAME DETECT LEAD SHORT TO EARTH

{ISOLATEMAINSPOWER}<

Next: !p50, !f49

POLARITY CHECK

{ISOLATEMAINSPOWER}<

Next: p52, !f51

BOILER CONTROL SWITCH RESISTANCE

{ISOLATEMAINSPOWER}<

Next: !p54, !f53

EXTERNAL PUMP RUNS

SET BOILER CONTROL SWITCH TO H POSITION

Next: p63, f62

WIRING LOOM

{ISOLATEMAINSPOWER}<

Next: !p61, !f60

SENSOR FITTING AND HEAT SINK COMPOUND

{ISOLATEMAINSPOWER}
REMOVE FUNCTIONAL CASE DOOR

Next: !p72, !f71

BOILER CONTROL SWITCH RESISTANCE

{ISOLATEMAINSPOWER}<

Next: p68, !f67

VOLTAGE TO PUMP

{ISOLATEMAINSPOWER}<

Next: !p70, !f69

GAS VALVE IGNITION PRESSURE

{ISOLATEMAINSPOWER}<

Next: p87, ?88, ?90, ?92, ?99

HOT SURFACE IGNITER

SET BOILER CONTROL SWITCH TO H POSITION

Next: !p95, f94

CONDENSATE PIPE

Next: p102, !f101

GAS VALVE VOLTAGE

{ISOLATEMAINSPOWER}<

Next: p106, !f148

System Information

  • Total Tests: 144
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control