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:

VOKERA COMPACT 25

GLOBALLY REPLACED

Next: &1, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

INFORMATION CASE REMOVAL

Next: &3, !f2

OBSERVATION BOILER SELF CHECK

CH & DHW TEMPERATURE CONTROLS SET TO MAX
ENSURE NO DEMANDS & BOILER IS COOL

Next: &1039, ?1009, ?1011, ?1013

TYPE OF DIAGNOSTIC PROCEDURE

Next: &75, !f74

DHW FLOW RATE

Next: &89, f1041

OBSERVATION FAN RUNS

CH & DHW TEMPERATURE CONTROLS SET TO MAX
ENSURE BOILER IS COOL

Next: &103, f1053

OBSERVATION PUMP RUNS

Next: &216, f1187

OBSERVATION BURNER IGNITION & ESTABLISH

Next: &356, ?217, ?219, ?221, ?2343

PRESSURE GAS INLET (DHW DEMAND)

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT

Next: &763, !f357

CH OPERATION

Next: &nff, ?359, ?361, ?363, ?365

FUSE FURTHER INVESTIGATION

NOT USED

Next: &nff, f1608

DHW OPERATION

Next: &358, ?764, ?766, ?768, ?770

HOW TO CANCEL PURGE CYCLE

CH & DHW TEMPERATURE

Next: &73, !f1040

FAULT CODE SOLID RED

BLANK

Next: &nff, f1769

FAULT CODE RED BLINKING

BLANK

Next: &nff, f1729

FAULT CODE GREEN FLASHING & GREEN & RED SOLID

BLANK

Next: &nff, f1824

FAULT CODE GREEN & RED FLASHING

BLANK

Next: &nff, f1799

HOW TO CANCEL PUMP PURGE CYCLE - FAULT CODES

CH & DHW TEMPERATURE

Next: &nff, !f1692

PREHEAT ENABLED

NOT USED

Next: &nff, f1863

COMBUSTION MODE

NOT USED

Next: &nff, f1867

NEW QADAI OPTIONS

OUTSIDE MODEL

Next: &nff, ?2193, ?2195, ?2197, ?2199, ?2201, ?2203, ?2205, ?2207, ?2209, ?2211, ?2213, ?2215, ?2217, ?2219, ?2221, ?2223, ?2225, ?2227, ?2229

BOILER FIRES NO DEMAND

DOMESTIC PLUMBING

Next: End

BOILER FIRES NO DEMAND

ACTUATOR - DHW

Next: End

BOILER FIRES NO DEMAND

Next: End

BOILER FIRES NO DEMAND

DETECTOR - WATER

Next: End

BOILER FIRES NO DEMAND

SENSOR - NTC

Next: End

USER CONTROLS

Z REDIRECT

Next: End

DHW FLOW RATE

COCK STOP - WATER SUPPLY

Next: End

DHW FLOW RATE

COLD WATER SUPPLY

Next: End

FAN DOES NOT RUN 4

HARNESS - WIRING

Next: End

FAN DOES NOT RUN

FAN

Next: End

FAN DOES NOT RUN

DETECTOR - WATER

Next: End

FAN DOES NOT RUN 2

DETECTOR - WATER

Next: End

FAN DOES NOT RUN

SENSOR - NTC

Next: End

FAN DOES NOT RUN

PRINTED CIRCUIT BOARD

Next: End

PUMP DOES NOT RUN

PRINTED CIRCUIT BOARD

Next: End

PUMP DOES NOT RUN

HARNESS - WIRING

Next: End

BURNER DOES NOT IGNITE

CONDENSATE

Next: End

BURNER DOES NOT IGNITE

GAS INLET PRESSURE

Next: End

BURNER DOES NOT IGNITE

PIPE - SUCTION

Next: End

BURNER DOES NOT IGNITE

COMPENSATION TUBE

Next: End

BURNER DOES NOT IGNITE 2

COMPENSATION TUBE

Next: End

BURNER DOES NOT IGNITE 2

PIPE - SUCTION

Next: End

BURNER DOES NOT IGNITE 2

HARNESS - WIRING

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BOILER DOES NOT EST

CONDENSATE

Next: End

BOILER DOES NOT EST

COMPENSATION TUBE

Next: End

BOILER DOES NOT EST

GAS INLET PRESSURE

Next: End

BOILER DOES NOT EST 2

ELECTRODE - DETECTION

Next: End

BOILER DOES NOT EST 2

PRINTED CIRCUIT BOARD

Next: End

BOILER DOES NOT EST

FLUE

Next: End

BURNER BAFFLES OR NOISY

CONDENSATE

Next: End

BURNER BAFFLES OR NOISY

COMPENSATION TUBE

Next: End

BURNER BAFFLES OR NOISY

FLUE

Next: End

BURNER BAFFLES OR NOISY

GAS INLET PRESSURE

Next: End

BURNER BAFFLES OR NOISY

PIPE - SUCTION

Next: End

DHW TOO HOT

SENSOR - NTC

Next: End

DHW COOL RADS COOL

PUMP

Next: End

DHW COOL RADS COOL

SENSOR - NTC

Next: End

DHW COOL RADS COOL

DETECTOR - WATER

Next: End

DHW COOL RADS COOL

PLUMBING ISSUE

Next: End

DHW COOL RADS COOL

BY-PASS VALVE - DHW

Next: End

DHW COOL RADS COOL

VALVE - NON RETURN

Next: End

DHW HOT THEN COOL

PUMP

Next: End

DHW HOT THEN COOL

SENSOR - NTC

Next: End

DHW HOT THEN COOL

DETECTOR - WATER

Next: End

DHW HOT THEN COOL

VALVE - NON RETURN

Next: End

CH OPERATION

EXPANSION VESSEL

Next: End

CH OPERATION

COCK 3/4 IN - HEATING - WATER

Next: End

CH OPERATION

DETECTOR - WATER

Next: End

CH OPERATION 2

DETECTOR - WATER

Next: End

CH OPERATION 2

PUMP

Next: End

FUSE FURTHER INVESTIGATION

PUMP

Next: End

RESISTANCE SPARK GENERATOR

TRANSFORMER - IGNITION

Next: End

FUSE FURTHER INVESTIGATION 2

GAS VALVE

Next: End

FUSE FURTHER INVESTIGATION

FAN

Next: End

FUSE FURTHER INVESTIGATION

ACTUATOR

Next: End

FAULT CODE 2

Z REDIRECT

Next: End

FAULT CODES

Z REDIRECT

Next: End

FAULT CODE RED SOLID

THERMOSTAT - HIGH LIMIT

Next: End

FAULT CODE RED SOLID 2

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE RED SOLID 2

HARNESS - WIRING

Next: End

FAULT CODE RED SOLID 2

PUMP

Next: End

FAULT CODE RED SOLID

DETECTOR - WATER

Next: End

FAULT CODE RED SOLID 2

DETECTOR - WATER

Next: End

FAULT CODE RED SOLID

SENSOR - NTC

Next: End

FAULT CODE SOLID RED

DETECTOR - WATER

Next: End

FAULT CODE SOLID RED 2

DETECTOR - WATER

Next: End

FAULT CODE SOLID RED 3

HARNESS - WIRING

Next: End

FAULT CODE BLINKING RED GREEN 2

DETECTOR - WATER

Next: End

FAULT CODE BLINKING RED GREEN

DETECTOR - WATER

Next: End

FAULT CODE BLINKING RED GREEN

SENSOR - FLUE

Next: End

FAULT CODE BLINKING RED GREEN

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE GREEN BLINKING

PRINTED CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND

PRINTED CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND

MECHANICAL CLOCK

Next: End

CH DOES NOT RESPOND 3

PRINTED CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND 3

MECHANICAL CLOCK

Next: End

CH DOES NOT RESPOND 2

PRINTED CIRCUIT BOARD

Next: End

CH DOES NOT RESPOND 2

MECHANICAL CLOCK

Next: End

FAULT CODE SOLID RED 4

HARNESS - WIRING

Next: End

PREHEAT

PRINTED CIRCUIT BOARD

Next: End

COMBUSTION MODE

PRINTED CIRCUIT BOARD

Next: End

DHW COOL RADS COOL

FLUE

Next: End

DHW COOL RADS COOL

PIPE - SUCTION

Next: End

DHW COOL RADS COOL 2

FLUE

Next: End

DHW COOL RADS COOL 2

PIPE - SUCTION

Next: End

DHW COOL RADS COOL 2

BY-PASS VALVE - DHW

Next: End

BOILER DOES NOT EST

ELECTRODE - DETECTION

Next: End

BURNER DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

FAN DOES NOT RUN 2

HARNESS - WIRING

Next: End

BURNER DOES NOT IGNITE

PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

HARNESS - WIRING

Next: End

FAULT CODE RED BLINKING

VALVE - NON RETURN

Next: End

FAULT CODE RED BLINKING

HEAT EXCHANGER ASSEMBLY - WATERWAYS

Next: End

FAULT CODE RED SOLID 3

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE BLINKING RED GREEN 4

HARNESS - WIRING

Next: End

BOILER DOES NOT EST

PIPE - SUCTION

Next: End

CASE REMOVAL

Z REDIRECT

Next: End

DHW OPERATION 4

PRINTED CIRCUIT BOARD

Next: End

DHW OPERATION 2

PRINTED CIRCUIT BOARD

Next: End

DHW OPERATION 3

PRINTED CIRCUIT BOARD

Next: End

FUSE FURTHER INVESTIGATION

SOLENOID

Next: End

DHW RADS BEGIN TO HEAT 2

PRINTED CIRCUIT BOARD

Next: End

DHW RADS BEGIN TO HEAT 2

HARNESS - WIRING

Next: End

CH OPERATION 4

PRINTED CIRCUIT BOARD

Next: End

CH OPERATION 2

HARNESS - WIRING

Next: End

CH OPERATION 3

PUMP

Next: End

CH OPERATION 2

BY-PASS VALVE - DHW

Next: End

DHW RADS BEGIN TO HEAT

PRINTED CIRCUIT BOARD

Next: End

CH OPERATION

HARNESS - WIRING

Next: End

CH OPERATION 2

PRINTED CIRCUIT BOARD

Next: End

CH OPERATION

PUMP

Next: End

CH OPERATION

BY-PASS VALVE - DHW

Next: End

DHW RADS BEGIN TO HEAT

HARNESS - WIRING

Next: End

CH RADS HEAT

CARTRIDGE

Next: End

CH RADS HEAT 2

CARTRIDGE

Next: End

FAULT CODE RED SOLID

SENSOR - FLUE

Next: End

FAULT CODE RED SOLID 6

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE RED SOLID 3

FAN

Next: End

FAULT CODE RED SOLID 5

HARNESS - WIRING

Next: End

FAULT CODE RED SOLID 5

PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

GAS VALVE & PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

SOLENOID - GAS VALVE & PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

THERMOSTAT - HIGH LIMIT

Next: End

NO VOLTAGE TO DIVERTER (QADAI)

PRINTED CIRCUIT BOARD

Next: End

INCORRECT RESISTANCE (QADAI)

ACTUATOR

Next: End

NO VOLTAGE TO SPARK GEN (QADAI)

PRINTED CIRCUIT BOARD

Next: End

INCORRECT RESISTANCE (QADAI)

TRANSFORMER - IGNITION

Next: End

INCORRECT RESISTANCE SPEED CONTROL (QADAI)

FAN

Next: End

FAULT CODE A03 (QADAI)

HARNESS - WIRING

Next: End

NO POWER TO FAN (QADAI)

PRINTED CIRCUIT BOARD

Next: End

INCORRECT RESISTANCE (QADAI)

FAN

Next: End

NO POWER TO PUMP (QADAI)

PRINTED CIRCUIT BOARD

Next: End

INCORRECT RESISTANCE (QADAI)

PUMP

Next: End

NO POWER TO GAS VALVE (QADAI)

PRINTED CIRCUIT BOARD

Next: End

QADAI

SENSOR - FLUE

Next: End

QADAI

SENSOR - NTC

Next: End

OUT OF RANGE (QADAI) 2

DETECTOR - WATER

Next: End

OUT OF RANGE (QADAI)

DETECTOR - WATER

Next: End

DIAG LITE 2

Z REDIRECT

Next: End

QADAI 1

Z REDIRECT

Next: End

QADAI RESISTANCE SIEMENS

GAS VALVE

Next: End

QADAI RESISTANCE SIT

GAS VALVE

Next: End

LEDS DO NOT WORK

FUSE (FUSED SPUR)

Next: End

LEDS DOT NOT WORK

MAINS INPUT FUSE

Next: End

LEDS DO NOT WORK

FUSE F1

Next: End

ONLY 1 ATTEMPT TO IGNITE

SENSOR - PRESSURE

Next: End

ONLY 1 ATTEMPT TO IGNITE

THERMOSTAT - HIGH LIMIT

Next: End

GAS INLET DHW DEMAMD

GAS INLET PRESSURE

Next: End

TYPE OF DIAGNOSTIC PROCEDURE

Z REDIRECT

Next: End

BOILER FIRES NO DEMAND

PRINTED CIRCUIT BOARD

Next: End

BOILER FIRES NO DEMAND

HARNESS - WIRING

Next: End

BOILER FIRES NO DEMAND

FROST PROTECTION MODE

Next: End

BOILER FIRES NO DEMAND 2

PRINTED CIRCUIT BOARD

Next: End

DHW FLOW RATE

HEAT EXCHANGER - PLATE

Next: End

DHW FLOW RATE

GOVERNOR - FLOW

Next: End

DHW FLOW RATE

ACTUATOR - DHW

Next: End

DHW FLOW RATE

INLET FILTER - DHW

Next: End

FAN DOES NOT RUN 3

PRINTED CIRCUIT BOARD

Next: End

FAN DOES NOT RUN 3

HARNESS - WIRING

Next: End

FAN DOES NOT RUN

SENSOR - PRESSURE

Next: End

FAN DOES NOT RUN 4

PRINTED CIRCUIT BOARD

Next: End

FAN DOES NOT RUN

ACTUATOR - DHW

Next: End

FAN DOES NOT RUN

GOVERNOR - FLOW

Next: End

FAN DOES NOT RUN 2

ACTUATOR - DHW

Next: End

FAN DOES NOT RUN

INLET FILTER - DHW

Next: End

FAN DOES NOT RUN

HARNESS - WIRING

Next: End

PUMP DOES NOT RUN

PUMP

Next: End

BURNER DOES NOT IGNITE 2

GAS VALVE

Next: End

BURNER DOES NOT IGNITE 2

BURNER ASSEMBLY

Next: End

BURNER DOES NOT IGNITE 2

HEAT EXCHANGER ASSEMBLY - FLUEWAYS

Next: End

BOILER DOES NOT EST

HARNESS - WIRING

Next: End

BOILER DOES NOT EST 2

HARNESS - WIRING

Next: End

BURNER BAFFLES OR NOISY

GAS VALVE

Next: End

BURNER BAFFLES OR NOISY

BURNER ASSEMBLY

Next: End

BURNER BAFFLES OR NOISY

HEAT EXCHANGER ASSEMBLY - FLUEWAYS

Next: End

DHW TOO HOT

PRINTED CIRCUIT BOARD

Next: End

DHW COOL RADS COOL

PRINTED CIRCUIT BOARD

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER - PLATE

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER ASSEMBLY - WATERWAYS

Next: End

DHW HOT THEN COOL

PRINTED CIRCUIT BOARD

Next: End

DHW HOT THEN COOL

HEAT EXCHANGER - PLATE

Next: End

DHW HOT THEN COOL

HEAT EXCHANGER ASSEMBLY - WATERWAYS

Next: End

CH OPERATION

PIPE

Next: End

CH OPERATION 3

PRINTED CIRCUIT BOARD

Next: End

CH OPERATION

PRESSURE GAUGE

Next: End

CH OPERATION

SYSTEM PRESSURE

Next: End

CH OPERATION 2

PRESSURE GAUGE

Next: End

CH OPERATION 2

SYSTEM PRESSURE

Next: End

DHW HOT THEN COOL

PRESSURE GAUGE

Next: End

DHW HOT THEN COOL

SYSTEM PRESSURE

Next: End

DHW COOL RADS COOL

PRESSURE GAUGE

Next: End

DHW COOL RADS COOL

SYSTEM PRESSURE

Next: End

FAN DOES NOT RUN

PRESSURE GAUGE

Next: End

FAN DOES NOT RUN

SYSTEM PRESSURE

Next: End

FUSE FURTHER INVESTIGATION

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION 2

PRINTED CIRCUIT BOARD - FUSE BLOWN

Next: End

OBSERVATION GAS VALVE TYPE?

PRINTED CIRCUIT BOARD - FUSE BLOWN

Next: End

FUSE FURTHER INVESTIGATION 3

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION 2

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION 4

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION 5

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION 6

HARNESS - WIRING

Next: End

FAULT CODE

Z REDIRECT

Next: End

FAULT CODE RED SOLID

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE RED SOLID

HARNESS - WIRING

Next: End

FAULT CODE RED SOLID

PRESSURE GAUGE

Next: End

FAULT CODE RED SOLID

SYSTEM PRESSURE

Next: End

FAULT CODE RED SOLID

PUMP

Next: End

FAULT CODE RED SOLID 2

THERMOSTAT - HIGH LIMIT

Next: End

FAULT CODE RED SOLID 4

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE SOLID RED

HARNESS - WIRING

Next: End

FAULT CODE SOLID RED 2

HARNESS - WIRING

Next: End

FAULT CODE SOLID RED

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE SOLID RED

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE SOLID RED

Z REDIRECT

Next: End

FAULT CODE BLINKING RED GREEN 2

HARNESS - WIRING

Next: End

FAULT CODE BLINKING RED GREEN

HARNESS - WIRING

Next: End

FAULT CODE BLINKING RED GREEN 3

HARNESS - WIRING

Next: End

FAULT CODE BLINKING RED GREEN

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE GREEN BLINKING

HARNESS - WIRING

Next: End

FAULT CODE GREEN BLINKING

SENSOR - PRESSURE

Next: End

FAULT CODE GREEN BLINKING

PRESSURE GAUGE

Next: End

FAULT CODE GREEN BLINKING

SYSTEM PRESSURE

Next: End

FAULT CODE GREEN BLINKING

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

CH DOES NOT RESPOND

Next: End

CH DOES NOT RESPOND 3

Next: End

CH DOES NOT RESPOND 2

Next: End

FAULT CODE SOLID RED

FAN

Next: End

PREHEAT

PREHEAT - TURNED OFF

Next: End

COMBUSTION

COMBUSTION MODE - CANCELLED

Next: End

DHW COOL RADS COOL 2

PRINTED CIRCUIT BOARD

Next: End

DHW COOL RADS COOL

BURNER ASSEMBLY

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER ASSEMBLY - FLUEWAYS

Next: End

DHW COOL RADS COOL 2

BURNER ASSEMBLY

Next: End

DHW COOL RADS COOL 2

HEAT EXCHANGER ASSEMBLY - FLUEWAYS

Next: End

DHW COOL RADS COOL 3

PRINTED CIRCUIT BOARD

Next: End

BOILER DOES NOT EST

BURNER ASSEMBLY

Next: End

BOILER DOES NOT EST

HEAT EXCHANGER ASSEMBLY - FLUEWAYS

Next: End

BOILER DOES NOT EST 3

ELECTRODE - DETECTION

Next: End

BOILER DOES NOT EST

PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

BURNER ASSEMBLY

Next: End

BURNER DOES NOT IGNITE

HEAT EXCHANGER ASSEMBLY - FLUEWAYS

Next: End

BURNER DOES NOT IGNITE 2

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

FAN DOES NOT RUN 2

PRINTED CIRCUIT BOARD

Next: End

FAN DOES NOT RUN 2

FAN

Next: End

BURNER DOES NOT IGNITE

TRANSFORMER - IGNITION

Next: End

FAULT CODE RED BLINKING 2

HEAT EXCHANGER - PLATE

Next: End

FAULT CODE RED SOLID

FAULT CODE - OVERHEAT

Next: End

FAULT CODE BLINKING RED GREEN 2

SENSOR - NTC

Next: End

DHW OPERATION 4

Next: End

DHW OPERATION 2

Next: End

DHW OPERATION 3

Next: End

DHW RADS BEGIN TO HEAT 2

CARTRIDGE

Next: End

DHW RADS BEGIN TO HEAT 3

ACTUATOR

Next: End

CH OPERATION 2

ACTUATOR

Next: End

CH OPERATION 2

Next: End

CH OPERATION

ACTUATOR

Next: End

CH OPERATION

Next: End

DHW RADS BEGIN TO HEAT

CARTRIDGE

Next: End

DHW RADS BEGIN TO HEAT 2

ACTUATOR

Next: End

FAULT CODE RED SOLID 3

HARNESS - WIRING

Next: End

FAULT CODE RED SOLID 6

HARNESS - WIRING

Next: End

FAULT CODE RED SOLID 2

FAN

Next: End

BURNER DOES NOT IGNITE 3

PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE 2

HARNESS & PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE 2

PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

HARNESS & PRINTED CIRCUIT BOARD

Next: End

STOPPING PRESEQ BREAKING

Z DIRECTION

Next: End

DIVERTER VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

DIVERTER RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

SPARK GENERATOR VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

SPARK GENERATOR SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN SPEED CONTROL RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

FAULT CODE A03 (QADAI)

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A03 2 (QADAI)

PRINTED CIRCUIT BOARD

Next: End

FAN SPEED CONTROL VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

PUMP VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

PUMP RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

GAS VALVE VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

FLUE THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

DHW THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

RETURN THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

FLOW THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

DIAG LITE 1

Z REDIRECT

Next: End

QADAI 2

Z REDIRECT

Next: End

GAS VALVE RESISTANCE SATISFACTORY (SIEMENS)

RESULT AS EXPECTED

Next: End

GAS VALVE RESISTANCE SATISFACTORY (SIT)

RESULT AS EXPECTED

Next: End

LEDS DO NOT WORK

Next: End

FUSE FIURTHER INVESTIGATION 2

Z REDIRECT

Next: End

LEDS DO NOT WORK

HARNESS - WIRING

Next: End

FUSE FIURTHER INVESTIGATION

Z REDIRECT

Next: End

FUSE FIURTHER INVESTIGATION 3

Z REDIRECT

Next: End

NO LEDS NO FAN

PRINTED CIRCUIT BOARD

Next: End

LEDS DO NOT WORK

PRINTED CIRCUIT BOARD

Next: End

SHORT TO EARTH NO DISPLAY

SENSOR - PRESSURE

Next: End

LED DOES NOT WORK

FAN

Next: End

SHORT TO EARTH NO DISPLAY

THERMOSTAT - HIGH LIMIT

Next: End

ONL Y 1 ATTEMPT TO IGNITE

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE / NOTIFICATION PRESENT

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p1646

LEDS DO NOT ILLUMINATE

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p2288

BOILER ATTEMPTS TO FIRE AFTER SELF CHECK COMPLETE - NO DEMAND PRESENT

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p1014

1 FLOW RESTRICTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p1048

2 FLOW SENSOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p1050

3 DHW INLET FILTER BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p1052

TEST 1 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: p1061

TEST 1 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: !p1932

TEST 2 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: p1136

TEST 2 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: p1176

1 FLOW RESTRICTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p1180

2 FLOW SENSOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p1182

3 DHW INLET FILTER BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p1184

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1294

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1296

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1389

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1391

BOILER DOES NOT RESPOND TO CH DEMAND

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1509

DIFFERENTIAL TEMPERATURE EXCESSIVELY HIGH

CHARACTERISTIC TEST FROM TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

Next: !p1481

BOILER DOES NOT RESPOND TO CH DEMAND

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1841

DIFFERENTIAL TEMPERATURE EXCESSIVELY HIGH

CHARACTERISTIC TEST FROM TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

Next: !p1504

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1553

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1556

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1558

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1560

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1562

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1564

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1566

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1568

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1570

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1572

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1739

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1741

BOILER GOES TO FAULT CODE RED LED BLINKING BEFORE 80 °C

CHARACTERISTIC TEST FROM OBSERVATION CH - OVERHEAT OCCUR

Next: !p1759

TEMPERATURE EXCEEDS 85 °C & CONTINUES TO FIRE

CHARACTERISTIC TEST FROM OBSERVATION CH - OVERHEAT OCCUR

Next: !p1761

BOILER ATTEMPTS TO IGNITE 5 TIMES BEFORE LOCKOUT OCCURS

CHARACTERISTIC TEST FROM OBSERVATION - FAULT CODE SOLID RED LED

Next: !p1796

FAN RUNS - FAULT CODE OCCURS APPROXIMATELY 15 SECONDS AFTER FAN STARTS

CHARACTERISTIC TEST FROM OBSERVATION - FAULT CODE SOLID RED LED

Next: p1859

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1831

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1833

GAS RATE UNSATISFACTORY

Next: p1876

UNABLE TO GAS RATE (E.G. LPG INSTALLATION WITH NO METER)

Next: p1887

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1884

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1886

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1895

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1897

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1907

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1909

DETECTION ELECTRODE - INCORRECT GAP AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER, DETECTION ELECTRODE & HEAT EXCHANGER FLUEWAYS

Next: !p1911

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1921

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1923

IGNITION ELECTRODE - INCORRECT GAP AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER, IGNITION ELECTRODE & HEAT EXCHANGER FLUEWAYS

Next: !p1925

FAN DOES NOT RUN

CHARACTERISTIC TEST FROM OBSERVATION - FAULT CODE SOLID RED LED

Next: p2137

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1193

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1316

HEADER FOR DIAGNOSTICS LITE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2269

HEADER FOR QUICK ACCESS DATA AND INFORMATION

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2270

HEADER FOR QUICK ACCESS DATA FLOW THERMISTOR

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2198

HEADER FOR QUICK ACCESS DATA RETURN THERMISTOR

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2200

HEADER FOR QUICK ACCESS DATA DHW THERMISTOR

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2202

HEADER FOR QUICK ACCESS DATA FLUE THERMISTOR

Next: p2204

HEADER FOR QUICK ACCESS DATA GAS VALVE VOLTAGE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2206

HEADER FOR QUICK ACCESS DATA GAS VALVE RESISTANCE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2275

HEADER FOR QUICK ACCESS DATA PUMP RESISTANCE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2210

BURNER IGNITES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1376

HEADER FOR QUICK ACCESS DATA PUMP VOLTAGE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2212

HEADER FOR QUICK ACCESS DATA FAN RESISTANCE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2214

HEADER FOR QUICK ACCESS DATA FAN VOLTAGE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2216

HEADER FOR QUICK ACCESS DATA FAN SPEED CONTROL

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2218

HEADER FOR QUICK ACCESS DATA FAN SPEED CONTROL RESISTANCE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2220

HEADER FOR QUICK ACCESS DATA SPARK GENERATOR RESISTANCE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2222

HEADER FOR QUICK ACCESS DATA SPARK GENERATOR VOLTAGE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2224

HEADER FOR QUICK ACCESS DATA DIVERTER RESISTANCE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2226

HEADER FOR QUICK ACCESS DATA DIVERTER VOLTAGE

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: p2228

NEEDED OR PRESEQ MESSES UP DIVERTER VOLTAGE FOR SOME REASON

CHARACTERISTIC TEST FROM NEW QADAI OPTIONS

Next: !p2230

TEST 1 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: !p2244

TEST 2 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: !p2246

LEDS STOP WORKING WHEN CN9 RECONNECTED

CHARACTERISTIC TEST FROM OBSERVATION DISCONNECT LOW VOLTAGE COMPONENTS

Next: !p2338

LEDS STOP WORKING WHEN C10 RECONNECTED

CHARACTERISTIC TEST FROM OBSERVATION DISCONNECT LOW VOLTAGE COMPONENTS

Next: !p2340

LEDS STOP WORKING WHEN CN11 RECONNECTED

CHARACTERISTIC TEST FROM OBSERVATION DISCONNECT LOW VOLTAGE COMPONENTS

Next: !p2342

BOILER GOES TO SOLID RED LOCKOUT AFTER ONLY ONE IGNITION ATTEMPT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p2345

BOILER DOES NOT RESPOND TO CH DEMAND

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1850

BOILER REACHES TEMPERATURE - RADIATORS DO NOT HEAT OR ONLY GET WARM

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1522

BOILER TEMPERATURE AND SYSTEM TEMPERATURE LOW - BOILER REMAINS LIT

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1538

EXCESSIVE SYSTEM PRESSURE RISE AS SYSTEM HEATS

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1519

DHW COOL - RADIATORS REMAIN COOL OR DO NOT INCREASE IN TEMPERATURE

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1417

DHW COOL - RADIATORS BEGIN TO HEAT OR INCREASE IN TEMPERATURE

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p2010

DHW TOO HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1396

DHW RUNS HOT THEN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1483

08/11/2022 11:55:06 2209_3_50_1 21/11/2022 09:20:04

11/11/2022 14:25:10

Next: End

ISOLATED COLD FEED (BOILER)

ISOLATE COLD FEED TO BOILER
ENSURE NO DEMANDS

Next: p1023, !f1024

RESISTANCE DHW FLOW SWITCH

DISCONNECT 1X ELECTRICAL CONNECTOR TO THE DHW FLOW SWITCH
ENSURE NO DEMANDS

Next: !p1027, !f1028

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p1033, !f1034

OBSERVATION DHW INLET SERVICE VALVE

Next: p1042, !f1043

VOLTAGE DHW FLOW SENSOR - DEMAND

GAIN ACCESS TO DHW FLOW SENSOR CONNECTIONS

Next: p1054, ?1060, ?1175

VOLTAGE FAN - POWER SUPPLY AT PCB

Next: !p1186, !f1185

RESISTANCE LOW WATER PRESSURE SWITCH

REMOVE 1X ELECTRICAL CONNECTOR FROM LWPS

Next: !p1145, f1146

OBSERVATION PRESSURE SYSTEM

Next: !p1164, ?1569, ?1571

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p1188, !f1189

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: p1275, f2168

VOLTAGE DETECTION ELECTRODE AT PCB

{GAINPCBACS}

Next: !p1341, f1342

VOLTAGE DETECTION ELECTRODE DISCONNECTED AT PCB

REMOVE DETECTION ELECTRODE CONNECTION FA2
FROM THE PCB & MAKE SAFE

Next: p1351, !f1354

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

ATTACH TEMPERATURE PROBES TO FLOW & RETURN
PIPES AS INDICATED BY THE RED ARROWS

Next: p1473, ?1478, ?1480

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

ATTACH TEMPERATURE PROBES TO FLOW & RETURN
PIPES AS INDICATED BY THE RED ARROWS

Next: p1497, ?1501, ?1503

DISCONNECT EXTERNAL CONTROLS - CH OPERATION

{GAINPCBACS}
DISC

Next: !p2004, !f2005

RESISTANCE PUMP AND HARNESS

REMOVE CONNECTOR CN2 FROM THE PCB

Next: p1609, f1610

RESISTANCE PUMP

REMOVE PUMP ELECTRICAL COVER
REMOVE ELECTRICAL CONNECTIONS FROM PUMP ASSEMBLY

Next: !p1611, !f1612

RESISTANCE FAN

REMOVE POWER ELECTRICAL CONNECTOR FROM FAN ASSEMBLY

Next: !p1639, !f1643

RESISTANCE SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR.

Next: !p1638, !f1624

RESISTANCE DIVERTER VALVE ACTUATOR

REMOVE ELECTRICAL CONNECTOR TO DIVERTER ACTUATOR

Next: !p1640, !f1645

RESISTANCE GAS VALVE AND HARNESS (SIEMENS - VALVE) - FUSE

REMOVE CONNECTOR CN2 FROM THE PCB

Next: !p1631, f1632

RESISTANCE GAS VALVE (SIT - VALVE) - FUSE

REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE

Next: !p1641, !f2009

RESISTANCE GAS VALVE (SIEMENS - VALVE) - FUSE

REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE

Next: !p1642, !f1637

RESET APPLIANCE

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p1730, f1731

RESISTANCE OVERHEAT STAT & HARNESS

REMOVE CONNECTOR CN11 FROM THE PCB

Next: !p1732, f1733

RESISTANCE OVERHEAT STAT

REMOVE 1X ELECTRICAL CONNECTOR FROM THE OVERHEAT STAT

Next: !p1734, !f1735

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p1744, !f1745

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN11 FROM THE PCB

Next: p1770, f1771

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p1772, !f1773

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: !p1776, !f1777

RESISTANCE WIRING HARNESS CN11

REMOVE CONNECTOR CN11 FROM THE PCB

Next: !p1792, !f1793

RESISTANCE FLUE TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN11 FROM THE PCB

Next: p1800, f1819

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p1803, !f1804

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: !p1807, !f1808

RESISTANCE FLUE TEMPERATURE SENSOR

REMOVE CONNECTOR FROM THE FLUE SENSOR

Next: !p1820, !f1821

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p1825, f1826

RESISTANCE LOW WATER PRESSURE SWITCH

REMOVE 1X ELECTRICAL CONNECTOR FROM LWPS

Next: !p1827, f1828

OBSERVATION PRESSURE SYSTEM

Next: !p1829, ?1830, ?1832

DISCONNECT EXTERNAL CONTROLS - CH OPERATION

{GAINPCBACS}
DISC

Next: !p2002, !f2003

DISCONNECT EXTERNAL CONTROLS - CH OPERATION

{GAINPCBACS}
DISC

Next: !p2006, !f2007

OBSERVATION - PREHEAT TURNED OFF

DISENGAGE DHW CONTRO

Next: !p1864, !f1865

OBSERVATION - COMBUSTION MODE CANCELLED

Next: !p1871, !f1870

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}

Next: p1939, !f1938

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER (FAULT CODE)

ATTACH TEMPERATURE PROBES TO FLOW & RETURN
PIPES AS INDICATED BY THE RED ARROWS

Next: p1954, !f1959

RESISTANCE DHW TEMPERATURE SENSOR HARNESS

REMOVE ELECTRICAL CONNECTOR TO DHW TEMPERATURE SENSOR
& CONNECTOR CN9 FROM THE PCB

Next: !p1970, !f1971

OBSERVATION DIVERTER VALVE OPERATION DHW (2X LOCKING PIN)

REMOVE ACTUATOR FROM THE 3-WAY VALVE ASSEMBLY & PLACE IN A SAFE POSITION TO OBSERVE ITS OPERATION

Next: !p2020, f2021

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}

Next: p2022, !f2023

OBSERVATION DIVERTER VALVE OPERATION CH (2X LOCKING PIN)

REMOVE ACTUATOR FROM THE 3-WAY VALVE ASSEMBLY & PLACE IN A SAFE POSITION TO OBSERVE ITS OPERATION

Next: p2109, f2042

VOLTAGE DIVERTER VALVE AT PCB (CH)

{GAINPCBACS}

Next: p2043, !f2044

RESISTANCE ACTUATOR HARNESS

REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE (DV) ACTUATOR

Next: !p2081, !f2082

RESISTANCE ACTUATOR HARNESS

REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE (DV) ACTUATOR

Next: !p2102, !f2103

RESISTANCE FLUE TEMPERATURE SENSOR

REMOVE CONNECTOR FROM THE FLUE SENSOR

Next: !p2131, !f2132

VOLTAGE FAN - POWER SUPPLY AT PCB

Next: !p2140, !f2141

RESISTANCE OVERHEAT STAT

REMOVE 1X ELECTRICAL CONNECTOR FROM THE OVERHEAT STAT

Next: p2180, !f2191

RESISTANCE GAS VALVE AND HARNESS (SIEMENS - VALVE)

REMOVE CONNECTOR CN2 FROM THE PCB

Next: !p2183, f2184

RESISTANCE GAS VALVE (SIEMENS - VALVE)

REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE

Next: !p2185, !f2186

RESISTANCE GAS VALVE (SIT - VALVE)

REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE

Next: !p2189, !f2190

RESISTANCE GAS VALVE (SIEMENS - VALVE)

REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE

Next: !p2286, !f2279

VOLTAGE MAINS INPUT - PCB

{GAINPCBACS}

Next: p2311, f2312

VOLTAGE MAINS INPUT - BOILER

Next: p2313, f2314

RESISTANCE FUSED SPUR

REMOVE FUSE FROM FUSED SPUR

Next: !p2315, f2316

FUSE FURTHER INVESTIGATION - FUSED SPUR

THE INFORMATION PROV

Next: !p2317, !f2318

FUSE FURTHER INVESTIGATION - MAINS INPUT

THE INFORMATION PROV

Next: !p2321, !f2322

FUSE FURTHER INVESTIGATION - F1 PCB FUSE

THE INFORMATION PROV

Next: !p2325, !f2326

DISCONNECT DHW FLOW SWITCH

DISCONNECT 1X CONNECTOR TO THE DHW FLOW SWITCH & MAKE SAFE
ENSURE NO DEMANDS

Next: p1021, f1022

DISCONNECT EXTERNAL CONTROLS

{GAINPCBACS}
DISCONNECT EXTERNAL CONTROLS FROM CONNECTOR CN5 & MAKE SAFE
NO DEMANDS

Next: p1029, !f1030

RESISTANCE DHW FLOW SWITCH & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB
ENSURE NO DEMANDS

Next: !p1025, f1026

TEMPERATURE FLOW PIPE - FROST PROTECTION

ATTACH FGA TEMPERATURE SENSOR TO THE BOILER'S FLOW PIPE

Next: !p1031, f1032

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p1035, !f1036

OBSERVATION COLD WATER SUPPLY

Next: p1044, !f1045

INSPECTION DHW FLOW COMPONENTS

DRAIN THE DOMESTIC H

Next: !p1046, ?1047, ?1049, ?1051

VOLTAGE FAN - POWER SUPPLY AT FAN

Next: p1089, f1086

RESISTANCE HARNESS DHW FLOW SENSOR

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p1174, !f1063

VOLTAGE FAN - SIGNAL CONTROL

{GAINPCBACS}
REMOVE CONNECTOR CN10 FROM THE PCB AND MAKE SAFE
ENSURE NO DEMANDS

Next: p1929, ?1070, ?1072

FAN RUNS - SIGNAL CONTROL DISCONNECTED

REMOVE SIGNAL CONTROL CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p1064, !f1098

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p1137, f1144

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p1138, !f1139

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: p1140, !f1141

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p1142, !f1143

INSPECTION DHW FLOW COMPONENTS

DRAIN THE DOMESTIC H

Next: !p1177, ?1179, ?1181, ?1183

RESISTANCE PUMP HARNESS

REMOVE CONNECTOR CN2 FROM THE PCB
DISCONNECT ELECTRICAL CONNECTIONS AT PUMP

Next: !p1192, !f1191

INSPECTION CONDENSATE

Next: p1215, !f1195

OBSERVATION GAS VALVE OPENS

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT
ENSURE NO DEMANDS

Next: p1231, f1219

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p1194, !f1218

OBSERVATION SPARKING OCCURS

REMOVE ELECTRODE LEA

Next: p1257, f1936

INSPECTION AIR INTAKE

Next: p1918, !f1239

INSPECTION COMPENSATION TUBE

Next: p1232, !f1271

INSPECTION COMPENSATION TUBE

Next: p1284, !f1277

INSPECTION AIR INTAKE

Next: p1305, !f1291

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

REMOVE BURNER ASSEMBLY FROM BOILER

Next: !p1292, ?1293, ?1295

RESISTANCE GAS VALVE HARNESS

REMOVE CONNECTOR CN2 FROM THE PCB & ELECTRICAL CONNECTOR AT GAS VALVE

Next: p1285, !f1304

INSPECTION FLUE

Next: p1297, !f1315

INSPECTION CONDENSATE

Next: p1317, !f1318

INSPECTION COMPENSATION TUBE

Next: p1972, !f1320

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p1321, !f1322

VOLTAGE DETECTION ELECTRODE

ENSURE NO DEMANDS

Next: p1904, f1324

INSPECTION DETECTION ELECTRODE

REMOVE DETECTION ELECTRODE

Next: !p1352, !f1353

INSPECTION FLUE

Next: p1319, !f1375

INSPECTION CONDENSATE

Next: p1377, !f1378

INSPECTION COMPENSATION TUBE

Next: p1379, !f1380

INSPECTION FLUE

Next: p1385, !f1382

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p1383, !f1384

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

REMOVE BURNER ASSEMBLY FROM BOILER

Next: !p1386, ?1388, ?1390

INSPECTION AIR INTAKE

Next: p1381, !f1392

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p1397, !f1398

OBSERVATION PRESSURE SYSTEM

Next: p1426, ?1565, ?1567

PUMP LIMPET TEST

Next: p1420, !f1421

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p1423, !f1422

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p1424, !f1425

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE PROBES TO FLOW & RETURN
PIPES AS INDICATED BY THE RED ARROWS

Next: p1435, f1472

OBSERVATION DHW OUTPUT (MIXER TAP PASSING)

Next: p1418, !f1434

GAS RATE

Next: p1443, ?1872, ?1874

INSPECTION BY-PASS VALVE

ENSURE BOILER IS COO

Next: !p1446, !f1445

INSPECTION NON-RETURN VALVE

ENSURE BOILER IS COO

Next: !p1475, !f1476

OBSERVATION PRESSURE SYSTEM

Next: p1484, ?1561, ?1563

PUMP LIMPET TEST

Next: p1486, !f1487

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p1488, !f1489

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p1490, !f1491

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE PROBES TO FLOW & RETURN
PIPES AS INDICATED BY THE RED ARROWS

Next: !p1496, f1493

INSPECTION NON-RETURN VALVE

ENSURE BOILER IS COO

Next: !p1499, !f1500

OBSERVATION INTERNAL OR EXTERNAL TIMER/PROGRAMMER FITTED

Next: p1510, f1511

DISCONNECT TIMER - CH OPERATION

{GAINPCBACS}
DISC

Next: p1837, !f1838

INSPECTION EXPANSION VESSEL PRESSURE

DRAIN BOILER PRIMARY SYSTEM WATER

Next: !p1520, !f1521

OBSERVATION SERVICE VALVE FLOW & RETURN

Next: p1523, !f1524

OBSERVATION PRESSURE SYSTEM

Next: p2026, ?1557, ?1559

OBSERVATION PRESSURE SYSTEM

Next: p1545, ?1552, ?1554

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p1541, !f1542

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: !p1543, !f1544

PUMP LIMPET TEST

Next: p1539, !f1551

RESISTANCE FAN AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p1613, f1614

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE CONNECTOR CN1 FROM THE PCB

Next: p1615, f1616

RESISTANCE DIVERTER VALVE ACTUATOR & HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: p1617, f1618

OBSERVATION GAS VALVE TYPE?

Next: p1627, f1628

RESISTANCE GAS VALVE AND HARNESS (SIT - VALVE) - FUSE

REMOVE CONNECTOR CN2 FROM THE PCB

Next: !p1633, f1630

FAULT CODE / NOTIFICATION

Next: !p1647, !f1648

OBSERVATION PRESSURE SYSTEM

Next: p1736, ?1738, ?1740

OBSERVATION PUMP RUNS

Next: p1742, f1743

PUMP LIMPET TEST

Next: p1748, !f1749

RESISTANCE PUMP HARNESS

REMOVE CONNECTOR CN2 FROM THE PCB
DISCONNECT ELECTRICAL CONNECTIONS AT PUMP

Next: !p1746, !f1747

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p1750, !f1751

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: p1752, !f1753

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p1942, !f1755

OBSERVATION CH - OVERHEAT OCCUR

ATTACH FGA TEMPERATURE CLAMP TO THE FLOW PIPE

Next: p1962, ?1758, ?1760

RESISTANCE RETURN TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN11 FROM THE PCB

Next: p2116, f1775

RESET APPLIANCE - SOLID RED LED

ENSURE NO DEMANDS ARE PRESENT

Next: p1790, f1791

OBSERVATION - FAULT CODE SOLID RED LED

Next: !p1794, ?1795, ?1797, ?2135

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN11 FROM THE PCB

Next: p1801, f1802

RESISTANCE RETURN TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN11 FROM THE PCB

Next: p1965, f1806

RESET APPLIANCE - RED & GREEN BLINKING

ENSURE NO DEMANDS ARE PRESENT

Next: !p1822, !f1823

RESET APPLIANCE - GREEN LED BLINKING

ENSURE NO DEMANDS ARE PRESENT

Next: !p1834, !f1835

RESISTANCE TIMER SWITCH

LOCATE 2X WIRES WHICH ARE CONNECTED TO THE
INTERNAL TIMER / PROGRAMMER SWITCH

Next: !p1839, !f1840

OBSERVATION INTERNAL OR EXTERNAL TIMER/PROGRAMMER FITTED

Next: p1842, f1843

DISCONNECT TIMER - CH OPERATION

{GAINPCBACS}
DISC

Next: p1846, !f1847

RESISTANCE TIMER SWITCH

LOCATE 2X WIRES WHICH ARE CONNECTED TO THE
INTERNAL TIMER / PROGRAMMER SWITCH

Next: !p1848, !f1849

OBSERVATION INTERNAL OR EXTERNAL TIMER/PROGRAMMER FITTED

Next: p1851, f1852

DISCONNECT TIMER - CH OPERATION

{GAINPCBACS}
DISC

Next: p1855, !f1856

RESISTANCE TIMER SWITCH

LOCATE 2X WIRES WHICH ARE CONNECTED TO THE
INTERNAL TIMER / PROGRAMMER SWITCH

Next: !p1857, !f1858

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p1860, !f1861

INSPECTION FLUE

Next: p1877, !f1878

INSPECTION AIR INTAKE

Next: p1879, !f1880

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

REMOVE BURNER ASSEMBLY FROM BOILER

Next: !p1881, ?1883, ?1885

INSPECTION FLUE

Next: p1888, !f1889

INSPECTION AIR INTAKE

Next: p1890, !f1891

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

REMOVE BURNER ASSEMBLY FROM BOILER

Next: p1898, ?1894, ?1896

INSPECTION BY-PASS VALVE

ENSURE BOILER IS COO

Next: !p1899, !f1900

INSPECTION BURNER, DETECTION ELECTRODE & HEAT EXCHANGER FLUEWAYS

REMOVE BURNER ASSEMBLY FROM BOILER

Next: p1912, ?1906, ?1908, ?1910

INSPECTION DETECTION ELECTRODE

REMOVE DETECTION ELECTRODE

Next: !p1913, !f1914

INSPECTION BURNER, IGNITION ELECTRODE & HEAT EXCHANGER FLUEWAYS

REMOVE BURNER ASSEMBLY FROM BOILER

Next: p1926, ?1920, ?1922, ?1924

INSPECTION IGNITION ELECTRODE AND LEAD

REMOVE IGNITION ELECTRODE FROM BOILER

Next: !p1927, !f1928

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p1933, !f1934

RESISTANCE SPARK GENERATOR HARNESS

REMOVE CN1 FROM THE PCB

Next: !p1940, !f1941

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE PROBES TO FLOW & RETURN
PIPES AS INDICATED BY THE RED ARROWS

Next: p1754, f1953

INSPECTION NON-RETURN VALVE

ENSURE BOILER IS COO

Next: !p1957, !f1958

OBSERVATION PUMP OVERRUN

Next: !p1963, !f1964

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p1805, f1969

INSPECTION AIR INTAKE

Next: p1355, !f1996

OBSERVATION DIVERTER VALVE TYPE

Next: p2055, f2019

RESISTANCE ACTUATOR HARNESS

REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE (DV) ACTUATOR

Next: !p2024, !f2025

OBSERVATION DIVERTER VALVE TYPE

Next: p2028, f2040

VOLTAGE DIVERTER VALVE AT PCB (CH)

{GAINPCBACS}

Next: p2084, !f2083

PUMP LIMPET TEST

Next: p2047, !f2048

RESISTANCE ACTUATOR HARNESS

REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE (DV) ACTUATOR

Next: !p2045, !f2046

INSPECTION BY-PASS VALVE

ENSURE BOILER IS COO

Next: !p2049, !f2050

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}

Next: p2066, !f2057

OBSERVATION DIVERTER VALVE OPERATION DHW (1X LOCKING PIN)

Next: !p2100, f2101

OBSERVATION DIVERTER VALVE OPERATION CH (1X LOCKING PIN)

Next: p2104, f2080

PUMP LIMPET TEST

Next: p2074, !f2094

INSPECTION BY-PASS VALVE

ENSURE BOILER IS COO

Next: !p2097, !f2098

INSPECTION DIVERTER VALVE SPINDLE (1X LOCKING PIN)

ACTUATOR REMOVED AND PRIMARY WATER DRAINED FROM PREVIOUS TEST

Next: p2096, !f2108

INSPECTION DIVERTER VALVE SPINDLE (2X LOCKING PIN)

Next: p2041, !f2115

RESISTANCE FLUE TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN11 FROM THE PCB

Next: p1789, f2130

VOLTAGE FAN - POWER SUPPLY AT FAN

Next: p2138, f2139

FAN RUNS - SIGNAL CONTROL DISCONNECTED

REMOVE SIGNAL CONTROL CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p2142, !f2143

VOLTAGE FAN - SIGNAL CONTROL

{GAINPCBACS}
REMOVE CONNECTOR CN10 FROM THE PCB AND MAKE SAFE
ENSURE NO DEMANDS

Next: p2144, !f2167

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p2165, !f2166

OBSERVATION GAS VALVE TYPE?

Next: p2181, f2182

RESISTANCE GAS VALVE AND HARNESS (SIT - VALVE)

REMOVE CONNECTOR CN2 FROM THE PCB

Next: !p2187, f2188

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p2267, !f2268

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: !p2265, !f2266

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS (QADAI)

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p2263, !f2264

RESISTANCE FLUE TEMPERATURE SENSOR

REMOVE CONNECTOR FROM THE FLUE SENSOR

Next: !p2261, !f2262

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: !p2259, !f2260

RESISTANCE PUMP

REMOVE PUMP ELECTRICAL COVER
REMOVE ELECTRICAL CONNECTIONS FROM PUMP ASSEMBLY

Next: !p2255, !f2256

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2253, !f2254

RESISTANCE FAN

REMOVE POWER ELECTRICAL CONNECTOR FROM FAN ASSEMBLY

Next: !p2251, !f2252

VOLTAGE FAN - POWER SUPPLY AT FAN

Next: !p2249, !f2250

VOLTAGE FAN - SIGNAL CONTROL

{GAINPCBACS}
REMOVE CONNECTOR CN10 FROM THE PCB AND MAKE SAFE
ENSURE NO DEMANDS

Next: p2241, ?2243, ?2245

RESISTANCE FAN SPEED CONTROL AND HARNESS (QADAI)

{GAINPCBACS}
DISCONNECT CN10 AT PCB

Next: !p2239, !f2240

RESISTANCE SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR.

Next: !p2237, !f2238

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}

Next: !p2235, !f2236

RESISTANCE DIVERTER VALVE ACTUATOR

REMOVE ELECTRICAL CONNECTOR TO DIVERTER ACTUATOR

Next: !p2233, !f2234

VOLTAGE DIVERTER VALVE AT PCB (QADAI)

{GAINPCBACS}

Next: !p2231, !f2232

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p2247, !f2248

DIAGNOSTICS LITE

DIAGNOSIS RELIES ON

Next: !p2271, !f2272

QUICK ACCESS DATA AND INFORMATION


THE TABLE BELOW

Next: !p2274, !f2273

OBSERVATION GAS VALVE TYPE? DUMMY

OUTSIDE MODEL

Next: p2276, f2277

RESISTANCE GAS VALVE (SIT - VALVE)

REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE

Next: !p2287, !f2283

OBSERVATION IS FAN RUNNING CONSTANTLY

REMOVE COMBUSTION COVER

Next: p2331, f2310

RESISTANCE FUSE - PCB

REMOVE FUSE FROM PCB

Next: !p2336, f2324

RESISTANCE FUSE - MAINS INPUT

REMOVE MAINS INPUT FUSE FROM TERMINAL BLOCK

Next: !p2319, f2320

OBSERVATION DISCONNECT LOW VOLTAGE COMPONENTS

{GAINPCBACS}
DISC

Next: !p2335, ?2337, ?2339, ?2341

RESISTANCE LOW WATER PRESSURE SWITCH

REMOVE 1X ELECTRICAL CONNECTOR FROM LWPS

Next: p2346, !f2347

RESISTANCE OVERHEAT STAT

REMOVE 1X ELECTRICAL CONNECTOR FROM THE OVERHEAT STAT

Next: !p2348, !f2349

System Information

  • Total Tests: 636
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control