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 A DIN

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

ENSURE DHW FLOW RATE

Next: &103, f2118

OBSERVATION PUMP RUNS

Next: &2608, f1187

OBSERVATION BURNER IGNITION & ESTABLISH

Next: &356, ?217, ?219, ?221, ?2647

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: &2615, ?764, ?766, ?768, ?770

HOW TO CANCEL PURGE CYCLE

CH & DHW TEMPERATURE

Next: &73, !f1040

FAULT CODE A02

NOT USED

Next: &nff, f1729

FAULT CODE A04

NOT USED

Next: &nff, f1824

HOW TO CANCEL PUMP PURGE CYCLE - FAULT CODES

CH & DHW TEMPERATURE

Next: &nff, !f1692

FAULT CODE A03

NOT USED

Next: &nff, f2323

FAULT CODE A06

NOT USED

Next: &nff, f2358

FAULT CODE A07

NOT USED

Next: &nff, f2366

FAULT CODE A08

NOT USED

Next: &nff, f2374

FAULT CODE A09

NOT USED

Next: &nff, f2382

FAULT CODE A11

NOT USED

Next: &nff, f2586

OBSERVATION FAN SPEEDS

{GAINPCBACS}
LOCA

Next: &216, !f2610

DISABLE PREHEAT FUNCTION

Next: &nff, !f2614

DHW PREHEAT OPERATION

ENSURE THERE IS A DEMAND FOR PREHEAT, BOILER COOL

Next: &358, !f2616

DIAGNOSTICS LITE

DIAGNOSIS RELIES ON

Next: &nff, !f2656

QUICK ACCESS DATA AND INFORMATION


THE TABLE BELOW

Next: &nff, !f2658

HEADER FOR QUICK ACCESS DATA FLOW THERMISTOR

OUTSIDE MODEL

Next: &nff, f2660

HEADER FOR QUICK ACCESS DATA RETURN THERMISTOR

OUTSIDE MODEL

Next: &nff, f2664

HEADER FOR QUICK ACCESS DATA GAS VALVE VOLTAGE

OUTSIDE MODEL

Next: &nff, f2668

HEADER FOR QUICK ACCESS DATA GAS VALVE RESISTANCE

OUTSIDE MODEL

Next: &nff, f2672

HEADER FOR QUICK ACCESS DATA DHW THERMISTOR

OUTSIDE MODEL

Next: &nff, f2680

HEADER FOR QUICK ACCESS DATA FLUE THERMISTOR

Next: &nff, f2679

HEADER FOR QUICK ACCESS DATA PUMP VOLTAGE

OUTSIDE MODEL

Next: &nff, f2691

HEADER FOR QUICK ACCESS DATA FAN RESISTANCE

OUTSIDE MODEL

Next: &nff, f2697

HEADER FOR QUICK ACCESS DATA FAN VOLTAGE

OUTSIDE MODEL

Next: &nff, f2700

HEADER FOR QUICK ACCESS DATA SPARK GENERATOR RESISTANCE

OUTSIDE MODEL

Next: &nff, f2705

HEADER FOR QUICK ACCESS DATA SPARK GENERATOR VOLTAGE

OUTSIDE MODEL

Next: &nff, f2712

HEADER FOR QUICK ACCESS DATA DIVERTER VOLTAGE

OUTSIDE MODEL

Next: &nff, f2717

HEADER FOR QUICK ACCESS DATA DIVERTER RESISTANCE

OUTSIDE MODEL

Next: &nff, f2718

HEADER FOR QUICK ACCESS DATA FAN SPEED CONTROL

OUTSIDE MODEL

Next: &nff, f2725

HEADER FOR QUICK ACCESS DATA FAN SPEED CONTROL RESISTANCE

OUTSIDE MODEL

Next: &nff, f2751

HEADER FOR QUICK ACCESS DATA PUMP RESISTANCE (ERP)

OUTSIDE MODEL

Next: &nff, f2757

BOILER FIRES NO DEMAND

DOMESTIC PLUMBING

Next: End

BOILER FIRES NO DEMAND

ACTUATOR - DHW

Next: End

USER CONTROLS

Z REDIRECT

Next: End

DHW FLOW RATE

STOP COCK - WATER SUPPLY

Next: End

DHW FLOW RATE

COLD WATER SUPPLY

Next: End

PUMP DOES NOT RUN

PRINTED CIRCUIT BOARD

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

VALVE - BY-PASS

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 - HEATING

Next: End

CH OPERATION

DETECTOR - WATER

Next: End

CH OPERATION 2

DETECTOR - WATER

Next: End

CH OPERATION 2

PUMP

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

FAULT CODE 2

Z REDIRECT

Next: End

FAULT CODES

Z REDIRECT

Next: End

FAULT CODE A02 2

THERMOSTAT - HIGH LIMIT

Next: End

FAULT CODE A02 2

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A02 RUNNING SLOW

PUMP

Next: End

FAULT CODE A02 2

DETECTOR - WATER

Next: End

FAULT CODE A02

DETECTOR - WATER

Next: End

FAULT CODE A02

SENSOR - NTC

Next: End

FAULT CODE A04

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

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

VALVE - BY-PASS

Next: End

BOILER DOES NOT EST

ELECTRODE - DETECTION

Next: End

BURNER DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE

HARNESS - WIRING

Next: End

FAULT CODE A02

VALVE - NON RETURN

Next: End

FAULT CODE A02

HEAT EXCHANGER ASSEMBLY - WATERWAYS

Next: End

FAULT CODE A02

PRINTED CIRCUIT BOARD

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

FAN DOES NOT RUN 4

HARNESS - WIRING

Next: End

FAN DOES NOT RUN

PRINTED CIRCUIT BOARD

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 2

HARNESS - WIRING

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 RADS HEAT 2

CARTRIDGE - 3 WAY VALVE

Next: End

CH OPERATION 3

PUMP

Next: End

CH OPERATION 2

VALVE - BY-PASS

Next: End

BOILER FIRES NO DEMAND

DETECTOR - WATER

Next: End

BOILER FIRES NO DEMAND

SENSOR - NTC

Next: End

SELF CHECK

PRINTED CIRCUIT BOARD

Next: End

SELF CHECK 2

PRINTED CIRCUIT BOARD

Next: End

SELF CHECK

MECHANICAL CLOCK

Next: End

FAULT CODE A03 5

HARNESS - WIRING

Next: End

FAULT CODE A03 3

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A03 2

FAN

Next: End

FAULT CODE A03 2

DETECTOR - WATER

Next: End

FAULT CODE A03

DETECTOR - WATER

Next: End

FAULT CODE A03

SENSOR - NTC

Next: End

FAULT CODE A03

HARNESS - WIRING

Next: End

FAULT CODE A06

HARNESS - WIRING

Next: End

FAULT CODE A06

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A07

DETECTOR - WATER

Next: End

FAULT CODE A08 2

DETECTOR - WATER

Next: End

FAULT CODE A08

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A09

SENSOR - FLUE

Next: End

FAULT CODE A07

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A07 2

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A07 2

PUMP

Next: End

FAULT CODE A07 2

DETECTOR - WATER

Next: End

FAULT CODE A07

HEAT EXCHANGER ASSEMBLY - WATERWAYS

Next: End

FAULT CODE A07

VALVE - NON RETURN

Next: End

FAULT CODE A07 3

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A07

DETECTOR - WATER X2

Next: End

FAULT CODE A08 2

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A08 2

PUMP

Next: End

FAULT CODE A08

DETECTOR - WATER

Next: End

FAULT CODE A08

HEAT EXCHANGER ASSEMBLY - WATERWAYS

Next: End

FAULT CODE A08

VALVE - NON RETURN

Next: End

FAULT CODE A08

DETECTOR - WATER X2

Next: End

FAULT CODE A08 3

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE AO9

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A09

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A09 2

PUMP

Next: End

FAULT CODE A09

DETECTOR - WATER

Next: End

FAULT CODE A11

CONDENSATE

Next: End

FAULT CODE A11

FLUE

Next: End

FAULT CODE A11 2

PRINTED CIRCUIT BOARD

Next: End

FAN SPEED

FAN SPEED INCORRECT

Next: End

DISABLE PREHEAT

Z REDIRECT

Next: End

PREHEAT 2

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A11 2

GAS VALVE

Next: End

FAULT CODE A11 2

ELECTRODE - DETECTION

Next: End

BOILER FIRES NO DEMAND 2

HARNESS - WIRING

Next: End

BURNER DOES NOT IGNITE

THERMOSTAT - HIGH LIMIT

Next: End

NO DISPLAY

THERMOSTAT - HIGH LIMIT

Next: End

ONLY 1 ATTEMPT TO IGNITE

SENSOR - PRESSURE

Next: End

ONLY 1 ATTEMPT TO IGNITE

THERMOSTAT - HIGH LIMIT

Next: End

BLANK FOR DIAGNOSICS LITE

Z REDIRECT

Next: End

BLANK FOR QUICK ACCESS DATA AND INFORMATION

Z REDIRECT

Next: End

OUT OF RANGE (QADAI)

DETECTOR - WATER

Next: End

OUT OF RANGE (QADAI) 2

DETECTOR - WATER

Next: End

NO POWER TO GAS VALVE (QADAI)

PRINTED CIRCUIT BOARD

Next: End

RESISTANCE WRONG (QADAI)

GAS VALVE

Next: End

QADAI

SENSOR - NTC

Next: End

QADAI

SENSOR - FLUE

Next: End

INCORRECT RESISTANCE (QADAI)

FAN

Next: End

NO POWER TO FAN (QADAI)

PRINTED CIRCUIT BOARD

Next: End

NO POWER TO PUMP (QADAI)

PRINTED CIRCUIT BOARD

Next: End

INCORRECT RESISTANCE (QADAI)

TRANSFORMER - IGNITION

Next: End

NO VOLTAGE TO SPARK GEN (QADAI)

PRINTED CIRCUIT BOARD

Next: End

INCORRECT RESISTANCE (QADAI)

ACTUATOR

Next: End

NO VOLTAGE TO DIVERTER (QADAI)

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A03 (QADAI)

HARNESS - WIRING

Next: End

INCORRECT RESISTANCE SPEED CONTROL (QADAI)

FAN

Next: End

LED DOES NOT WORK

FAN

Next: End

NO DISPLAY

SENSOR - PRESSURE

Next: End

QADAI

PUMP

Next: End

OBSERVATION PUMP RUNS - ERP PUMP

HARNESS - WIRING

Next: End

FAULT CODE A02 - ERP PUMP

HARNESS - WIRING

Next: End

FAULT CODE A07 - ERP PUMP

HARNESS - WIRING

Next: End

FAULT CODE A08 - ERP PUMP

HARNESS - WIRING

Next: End

FAULT A09 - ERP PUMP

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION ERP PUMP

FAN

Next: End

RESISTANCE SPARK GENERATOR ERP PUMP

TRANSFORMER - IGNITION

Next: End

FUSE FURTHER INVESTIGATION ERP PUMP

ACTUATOR

Next: End

FUSE INVESTIGATION

PUMP

Next: End

BURNER DOES NOT IGNITE

HARNESS & PRINTED CIRCUIT BOARD

Next: End

FUSE FURTHER INVESTIGATION 5 ERP PUMP

HARNESS - WIRING

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

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

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 - FLEXIBLE

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

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

FAULT CODE

Z REDIRECT

Next: End

FAULT CODE A02 3

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A02 2

HARNESS - WIRING

Next: End

FAULT CODE A02

PRESSURE GAUGE

Next: End

FAULT CODE A02

SYSTEM PRESSURE

Next: End

FAULT CODE A02

THERMOSTAT - HIGH LIMIT

Next: End

FAULT CODE RED A02

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A04

HARNESS - WIRING

Next: End

FAULT CODE A04

SENSOR - PRESSURE

Next: End

FAULT CODE A04

PRESSURE GAUGE

Next: End

FAULT CODE A04

SYSTEM PRESSURE

Next: End

FAULT CODE A04

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

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

BURNER DOES NOT IGNITE

TRANSFORMER - IGNITION

Next: End

FAULT CODE A02

HEAT EXCHANGER - PLATE

Next: End

FAULT CODE A02

FAULT CODE - A02 - A07 -A08

Next: End

DHW OPERATION 4

Next: End

DHW OPERATION 2

Next: End

DHW OPERATION 3

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 4

PRINTED CIRCUIT BOARD

Next: End

FAN DOES NOT RUN 5

PRINTED CIRCUIT BOARD

Next: End

FAN DOES NOT RUN

HARNESS - WIRING

Next: End

FAN DOES NOT RUN 2

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

PRESSURE GAUGE

Next: End

FAN DOES NOT RUN

SYSTEM PRESSURE

Next: End

FAN DOES NOT RUN 3

PRINTED CIRCUIT BOARD

Next: End

FAN DOES NOT RUN 2

FAN

Next: End

DHW RADS BEGIN TO HEAT 2

CARTRIDGE - 3 WAY VALVE

Next: End

DHW RADS BEGIN TO HEAT 3

ACTUATOR

Next: End

CH OPERATION 2

ACTUATOR

Next: End

CH OPERATION 2

Next: End

BOILER FIRES NO DEMAND

FROST PROTECTION MODE

Next: End

BOILER FIRES NO DEMAND 2

PRINTED CIRCUIT BOARD

Next: End

DHW OPERATION SELF CHECK

Next: End

SELF CHECK

Next: End

FAULT CODE A03 3

FAN

Next: End

FAULT CODE A03 3

HARNESS - WIRING

Next: End

FAULT CODE A03

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A03 2

HARNESS - WIRING

Next: End

FAULT CODE A03

SENSOR - PRESSURE

Next: End

FAULT CODE A03

PRESSURE GAUGE

Next: End

FAULT CODE A03

SYSTEM PRESSURE

Next: End

FAULT CODE A03 2

PRINTED CIRCUIT BOARD

Next: End

FAULT CODE A03

FAN

Next: End

FAULT CODE A06

SENSOR - NTC

Next: End

FAULT CODE A06

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE A07

HARNESS - WIRING

Next: End

FAULT CODE AO8

HARNESS - WIRING

Next: End

FAULT CODE A09

HARNESS - WIRING

Next: End

FAULT CODE A07

PRESSURE GAUGE

Next: End

FAULT CODE A07

SYSTEM PRESSURE

Next: End

FAULT CODE A07

HEAT EXCHANGER - PLATE

Next: End

FAULT CODE A07

FAULT CODE - A02 - A07 -A08

Next: End

FAULT CODE A08

PRESSURE GAUGE

Next: End

FAULT CODE A08

SYSTEM PRESSURE

Next: End

FAULT CODE A08

HEAT EXCHANGER - PLATE

Next: End

FAULT CODE A08

FAULT CODE - A02 - A07 -A08

Next: End

FAULT CODE A09

PRESSURE GAUGE

Next: End

FAULT CODE A09

SYSTEM PRESSURE

Next: End

FAULT CODE A09

FAULT CODE RESET - A09

Next: End

FAULT CODE A09 2

SENSOR - FLUE

Next: End

FAULT CODE A09

HEAT EXCHANGER ASSEMBLY

Next: End

FAULT CODE A11

ELECTRODE - DETECTION

Next: End

FAULT CODE A11

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

BOILER FIRES NO DEMAND 3

PRINTED CIRCUIT BOARD

Next: End

BURNER DOES NOT IGNITE 2

PRINTED CIRCUIT BOARD

Next: End

ONL Y 1 ATTEMPT TO IGNITE

PRINTED CIRCUIT BOARD

Next: End

FLOW THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

RETURN THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

GAS VALVE VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

GAS VALVE RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

DHW THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

FLUE THERMISTOR SATISFACTORY

RESULT AS EXPECTED

Next: End

SPARK GENERATOR SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

PUMP VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

SPARK GENERATOR VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

DIVERTER RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

DIVERTER VOLTAGE 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 RESISTANCE SATISFACTORY

RESULT AS EXPECTED

Next: End

FAN SPEED CONTROL VOLTAGE SATISFACTORY

RESULT AS EXPECTED

Next: End

PUMP RESISTANCE SATISFACTORY ERP

RESULT AS EXPECTED

Next: End

LEDS DO NOT WORK

PRINTED CIRCUIT BOARD

Next: End

OBSERVATION PUMP RUNS

PUMP

Next: End

FAULT CODE A02

PUMP

Next: End

FAULT CODE A07

PUMP

Next: End

FAULT CODE A08

PUMP

Next: End

FAULT CODE A09

PUMP

Next: End

FUSE FURTHER INVESTIGATION 2 ERP PUMP

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION 3 ERP PUMP

HARNESS - WIRING

Next: End

FUSE FURTHER INVESTIGATION 4 ERP PUMP

HARNESS - WIRING

Next: End

OBSERVATION GAS VALVE TYPE? ERP PUMP

PRINTED CIRCUIT BOARD - FUSE BLOWN

Next: End

FUSE FURTHER INVESTIGATION

HARNESS - WIRING

Next: End

BURNER DOES NOT IGNITE

SOLENOID - GAS VALVE & PRINTED CIRCUIT BOARD

Next: End

FUSE FURTHER INVESTIGATION ERP PUMP

SOLENOID

Next: End

FAULT CODE / NOTIFICATION PRESENT

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p1646

DISPLAY DOES NOT OPERATE

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p1012

BOILER ATTEMPTS TO FIRE AFTER SELF CHECK WITH PREHEAT DISABLED

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p2225

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

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: !p1739

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p1741

BOILER GOES TO FAULT CODE A02 BEFORE 75 °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

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

TEST 1 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: p2122

TEST 2 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: p2124

1 FLOW RESTRICTOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p2127

2 FLOW SENSOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p2129

3 DHW INLET FILTER BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p2131

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1193

TEST 1 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: !p2174

TEST 2 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: p2176

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2183

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2185

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1316

BURNER IGNITES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1376

FROST SYMBOL DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p2271

RADIATOR SYMBOL DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p2278

TEST 1 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: !p2337

TEST 2 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: p2339

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2346

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2348

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2436

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2438

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2507

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2509

PRESSURE ON GAUGE OK BUT DOES NOT CHANGE WHEN WATER ADDED

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2535

SYSTEM PRESSURE LOW

CHARACTERISTIC TEST FROM OBSERVATION PRESSURE SYSTEM

Next: !p2537

FAULT CODE A09 OCCURS - FLUE GAS TEMPERATURE BELOW 90°C

CHARACTERISTIC TEST FROM OBSERVATION FLUE GAS TEMPERATURE

Next: !p2571

FLUE TEMPERATURE EXCEEDS 90°C & BOILER STILL FIRING

CHARACTERISTIC TEST FROM OBSERVATION FLUE GAS TEMPERATURE

Next: !p2573

BOILER GOES TO IGNITION LOCKOUT (A01) AFTER ONLY 1 ATTEMPT AT IGNITION

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p2648

TEST 1 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: !p2728

TEST 2 - VOLTAGE NOT AS EXPECTED

CHARACTERISTIC TEST FROM VOLTAGE FAN - SIGNAL CONTROL

Next: !p2749

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: p2204

DHW TOO HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1396

DHW RUNS HOT THEN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1483

20/03/2023 13:26:04 2212_1_46_1 21/06/2023 10:45:03

22/03/2023 08:24:55

Next: End

ISOLATED COLD FEED (BOILER)

ISOLATE COLD FEED TO BOILER
ENSURE NO DEMANDS

Next: p1023, !f1024

RESISTANCE DHW FLOW SWITCH

REMOVE CONNECTORS TO THE DHW FLOW SWITCH
ENSURE NO DEMANDS

Next: !p1027, !f1028

OBSERVATION DHW INLET SERVICE VALVE

Next: p1042, !f1043

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2855, !f1189

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: p1275, f2628

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 P

Next: p1473, ?1478, ?1480

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

ATTACH TEMPERATURE P

Next: p1497, ?1501, ?1503

DISCONNECT EXTERNAL CONTROLS - CH OPERATION

{GAINPCBACS}
DISC

Next: !p2004, !f2005

VOLTAGE MAINS INPUT - BOILER

Next: p1592, f1593

RESISTANCE FUSED SPUR

REMOVE FUSE FROM FUSED SPUR

Next: !p1594, f1595

FUSE FURTHER INVESTIGATION - FUSED SPUR

THE INFORMATION PROV

Next: !p1596, !f1597

FUSE FURTHER INVESTIGATION - MAINS INPUT

THE INFORMATION PROV

Next: !p1600, !f1601

FUSE FURTHER INVESTIGATION - F1 PCB FUSE

THE INFORMATION PROV

Next: !p1604, !f1605

RESISTANCE PUMP AND HARNESS (ERP)

REMOVE CONNECTOR CN2 FROM THE PCB

Next: p2873, f2890

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: p2861, !f1745

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

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}

Next: p1939, !f1938

0TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER (FAULT CODE)

ATTACH TEMPERATURE P

Next: p1954, !f1959

OBSERVATION DHW SYMBOL DISPLAYED

Next: p2164, f2119

VOLTAGE DHW FLOW SENSOR - DEMAND

GAIN ACCESS TO DHW FLOW SENSOR CONNECTIONS

Next: !p2163, ?2121, ?2123

VOLTAGE FAN - POWER SUPPLY AT PCB

{GAINPCBACS}

Next: !p2167, !f2168

RESISTANCE LOW WATER PRESSURE SWITCH

REMOVE 1X ELECTRICAL CONNECTOR FROM LWPS

Next: !p2179, f2180

OBSERVATION PRESSURE SYSTEM

Next: !p2181, ?2182, ?2184

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}

Next: p2207, !f2208

VOLTAGE DIVERTER VALVE AT PCB (CH)

{GAINPCBACS}

Next: p2215, !f2216

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p2274, !f2275

DISCONNECT EXTERNAL CONTROLS - SELF CHECK

{GAINPCBACS}
DISCONNECT EXTERNAL CONTROLS FROM CONNECTOR CN5 & MAKE SAFE

Next: !p2281, !f2282

OBSERVATION FAN RUNS

ENSURE DHW FLOW RATE

Next: p2324, f2327

VOLTAGE FAN - POWER SUPPLY AT FAN

Next: p2328, f2329

VOLTAGE FAN - POWER SUPPLY AT PCB

{GAINPCBACS}

Next: !p2330, !f2331

RESISTANCE LOW WATER PRESSURE SWITCH

REMOVE 1X ELECTRICAL CONNECTOR FROM LWPS

Next: !p2342, f2343

OBSERVATION PRESSURE SYSTEM

Next: !p2344, ?2345, ?2347

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p2359, f2360

RESISTANCE DHW TEMPERATURE SENSOR HARNESS

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

Next: !p2361, !f2362

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS - (FAULT CODE)

REMOVE CONNECTOR CN11 FROM THE PCB
ENSURE BOILER IS COOL

Next: p2367, f2368

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p2369, !f2370

RESISTANCE RETURN TEMPERATURE SENSOR & HARNESS - (FAULT CODE)

REMOVE CONNECTOR CN11 FROM THE PCB
ENSURE BOILER IS COOL

Next: p2375, f2376

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: !p2377, !f2378

RESISTANCE FLUE TEMPERATURE SENSOR & HARNESS - (FAULT CODE)

REMOVE CONNECTOR CN11 FROM THE PCB
ENSURE BOILER IS COOL

Next: p2383, f2384

RESISTANCE FLUE TEMPERATURE SENSOR

REMOVE CONNECTOR FROM THE FLUE SENSOR

Next: !p2385, !f2386

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2864, !f2442

0TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER (FAULT CODE)

ATTACH TEMPERATURE P

Next: p2492, !f2493

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2867, !f2513

0TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER (FAULT CODE)

ATTACH TEMPERATURE P

Next: p2522, !f2523

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: p2870, !f2541

RESET APPLIANCE - FAULT CODE A11

ENSURE NO DEMANDS ARE PRESENT

Next: p2594, f2588

OBSERVATION DETECTION ELECTRODE DISCONNECTED

REMOVE LEAD TO DETECTION ELECTRODE & MAKE SAFE

Next: !p2593, !f2606

RESISTANCE OVERHEAT STAT

REMOVE 1X ELECTRICAL CONNECTOR FROM THE OVERHEAT STAT

Next: p2634, !f2639

RESISTANCE GAS VALVE HARNESS

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

Next: !p2895, !f2896

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p2661, !f2662

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: !p2665, !f2666

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: !p2669, !f2670

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR CN2 FROM THE PCB

Next: !p2673, !f2674

RESISTANCE FLUE TEMPERATURE SENSOR

REMOVE CONNECTOR FROM THE FLUE SENSOR

Next: !p2683, !f2684

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS (QADAI)

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p2681, !f2682

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2709, !f2703

RESISTANCE FAN

REMOVE POWER ELECTRICAL CONNECTOR FROM FAN ASSEMBLY

Next: !p2710, !f2699

VOLTAGE FAN - POWER SUPPLY AT FAN

Next: !p2708, !f2702

RESISTANCE SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR.

Next: !p2706, !f2707

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}

Next: !p2714, !f2713

VOLTAGE DIVERTER VALVE AT PCB (QADAI)

{GAINPCBACS}

Next: !p2723, !f2722

RESISTANCE DIVERTER VALVE ACTUATOR

REMOVE ELECTRICAL CONNECTOR TO DIVERTER ACTUATOR

Next: !p2719, !f2720

VOLTAGE FAN - SIGNAL CONTROL

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

Next: p2726, ?2727, ?2729

RESISTANCE FAN SPEED CONTROL AND HARNESS (QADAI)

{GAINPCBACS}
DISCONNECT CN10 AT PCB

Next: !p2752, !f2754

RESISTANCE PUMP (ERP)

REMOVE ELECTRICAL CONNECTIONS FROM PUMP ASSEMBLY

Next: !p2758, !f2771

RESISTANCE FAN

REMOVE POWER ELECTRICAL CONNECTOR FROM FAN ASSEMBLY

Next: !p2876, !f2877

RESISTANCE SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR.

Next: !p2880, !f2881

RESISTANCE DIVERTER VALVE ACTUATOR

REMOVE ELECTRICAL CONNECTOR TO DIVERTER ACTUATOR

Next: !p2884, !f2885

RESISTANCE GAS VALVE HARNESS

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

Next: !p2897, !f2898

RESISTANCE PUMP (ERP)

REMOVE ELECTRICAL CONNECTIONS FROM PUMP ASSEMBLY

Next: !p2891, !f2892

VOLTAGE MAINS INPUT - PCB

{GAINPCBACS}

Next: p1590, f1591

DISCONNECT DHW FLOW SWITCH

DISCONNECT LEADS TO THE DHW FLOW SWITCH & MAKE SAFE
ENSURE NO DEMANDS

Next: p2625, f1022

RESISTANCE DHW FLOW SWITCH & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB
ENSURE NO DEMANDS

Next: !p1025, f1026

OBSERVATION COLD WATER SUPPLY

Next: p1044, !f1045

INSPECTION DHW FLOW COMPONENTS

DRAIN THE DOMESTIC H

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

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

GAIN ACCESS TO DETECTION ELECTRODE CONNECTION
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 C

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 C

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: p2212, ?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 FUSE - PCB

REMOVE FUSE FROM PCB

Next: p2760, f1603

RESISTANCE FUSE - MAINS INPUT

REMOVE MAINS INPUT FUSE FROM TERMINAL BLOCK

Next: !p1598, f1599

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 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

RESET APPLIANCE - FAULT CODE A04

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

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 SPARK GENERATOR HARNESS

REMOVE CN1 FROM THE PCB

Next: !p1940, !f1941

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE C

Next: p1754, f1953

INSPECTION NON-RETURN VALVE

ENSURE BOILER IS COO

Next: !p1957, !f1958

OBSERVATION PUMP OVERRUN

Next: !p1963, !f1964

INSPECTION AIR INTAKE

Next: p1355, !f1996

OBSERVATION DISCONNECT LOW WATER PRESSURE SWITCH

REMOVE ELECTRICAL CONNECTORS FROM THE LOW WATER PRESSURE SWITCH AND MAKE SAFE

Next: !p2769, !f2770

RESISTANCE HARNESS DHW FLOW SENSOR

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p2132, !f2133

INSPECTION DHW FLOW COMPONENTS

DRAIN THE DOMESTIC H

Next: !p2125, ?2126, ?2128, ?2130

VOLTAGE FAN - POWER SUPPLY AT FAN

Next: p2165, f2166

FAN RUNS - SIGNAL CONTROL DISCONNECTED

REMOVE SIGNAL CONTROL CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p2169, !f2170

VOLTAGE FAN - SIGNAL CONTROL

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

Next: p2171, ?2173, ?2175

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p2192, !f2193

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p2177, f2178

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p2186, !f2187

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: p2188, !f2189

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p2190, !f2191

OBSERVATION DIVERTER VALVE OPERATION DHW

Next: !p2205, f2206

RESISTANCE ACTUATOR HARNESS

REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE (DV) ACTUATOR

Next: !p2209, !f2210

OBSERVATION DIVERTER VALVE OPERATION CH

Next: p2213, f2214

INSPECTION DIVERTER VALVE SPINDLE

ACTUATOR REMOVED AND PRIMARY WATER DRAINED FROM PREVIOUS TEST

Next: p2219, !f2220

RESISTANCE ACTUATOR HARNESS

REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE (DV) ACTUATOR

Next: !p2217, !f2218

PUMP LIMPET TEST

Next: p2221, !f2222

INSPECTION BY-PASS VALVE

ENSURE BOILER IS COO

Next: !p2223, !f2224

OBSERVATION DISPLAY

ENSURE NO DEMANDS PRESENT

Next: p1014, ?2258, ?2260

TEMPERATURE FLOW PIPE - FROST PROTECTION

ATTACH FGA TEMPERATURE SENSOR TO THE BOILER'S
FLOW PIPE NEAR THE FLOW THERMISTOR

Next: !p2272, f2273

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p2276, !f2277

OBSERVATION INTERNAL OR EXTERNAL TIMER/PROGRAMMER FITTED

Next: p2279, f2280

DISCONNECT TIMER/PROGRAMMER- SELF CHECK

{GAINPCBACS}
DISCONNECT WIRES FROM CONNECTOR CN5 & MAKE SAFE

Next: p2283, !f2284

RESISTANCE TIMER SWITCH - SELF CHECK

ENSURE NO CH DEMAND

Next: !p2285, !f2286

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p2325, !f2326

FAN RUNS - SIGNAL CONTROL DISCONNECTED

REMOVE SIGNAL CONTROL CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p2332, !f2333

VOLTAGE FAN - SIGNAL CONTROL

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

Next: p2334, ?2336, ?2338

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p2355, !f2356

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: p2340, f2341

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p2349, !f2350

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: p2351, !f2352

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p2353, !f2354

RESET APPLIANCE - FAULT CODE (SENSORS)

ENSURE NO DEMANDS ARE PRESENT

Next: !p2363, !f2364

RESET APPLIANCE - FAULT CODE (SENSORS)

ENSURE NO DEMANDS ARE PRESENT

Next: p2433, !f2432

RESET APPLIANCE - FAULT CODE (SENSORS)

ENSURE NO DEMANDS ARE PRESENT

Next: p2504, !f2380

RESET APPLIANCE - FAULT CODE (SENSORS)

ENSURE NO DEMANDS ARE PRESENT

Next: p2532, !f2531

OBSERVATION PRESSURE SYSTEM

Next: p2434, ?2435, ?2437

OBSERVATION PUMP RUNS

Next: p2439, f2440

PUMP LIMPET TEST

Next: p2467, !f2446

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE CONNECTORS FROM RETURN SENSOR

Next: p2489, !f2469

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE C

Next: p2490, f2491

OBSERVATION CH - FAULT CODE A07 OCCURS

Next: p2496, !f2501

INSPECTION NON-RETURN VALVE

ENSURE BOILER IS COO

Next: !p2494, !f2495

OBSERVATION PUMP OVERRUN

Next: !p2502, !f2499

OBSERVATION PRESSURE SYSTEM

Next: p2505, ?2506, ?2508

OBSERVATION PUMP RUNS

Next: p2510, f2511

PUMP LIMPET TEST

Next: p2516, !f2517

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p2518, !f2519

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

ATTACH TEMPERATURE C

Next: p2520, f2521

OBSERVATION CH - FAULT CODE A08 OCCURS

Next: p2526, !f2527

INSPECTION NON-RETURN VALVE

ENSURE BOILER IS COO

Next: !p2524, !f2525

OBSERVATION PUMP OVERRUN

Next: !p2528, !f2529

OBSERVATION PRESSURE SYSTEM

Next: p2533, ?2534, ?2536

OBSERVATION PUMP RUNS

Next: p2538, f2539

PUMP LIMPET TEST

Next: p2544, !f2545

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p2563, !f2547

OBSERVATION FLUE GAS TEMPERATURE

INSERT TEMPERATURE PROBE INTO FLUE GAS TEST POINT

Next: !p2568, ?2570, ?2572

INSPECTION CONDENSATE

Next: p2595, !f2596

INSPECTION FLUE

Next: p2620, !f2598

INSTALLATION TIGHTNESS TEST

Next: p2621, !f2622

INSPECTION DETECTION ELECTRODE - FAULT CODE A11

REMOVE BURNER ASSEMBLY FROM BOILER

Next: !p2623, !f2624

RESISTANCE HARNESS DHW FLOW SENSOR (SELF CHECK)

DISCONNECT LEADS ON THE DHW FLOW SWITCH
REMOVE CONNECTOR CN9 FROM THE PCB

Next: !p2626, !f2627

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR CN2 FROM THE PCB

Next: !p2635, f2636

OBSERVATION DISCONNECT OVERHEAT STAT

REMOVE ELECTRICAL CONNECTORS FROM THE OVERHEAT STAT AND MAKE SAFE

Next: p1997, !f2644

RESISTANCE LOW WATER PRESSURE SWITCH

REMOVE 1X ELECTRICAL CONNECTOR FROM LWPS

Next: p2649, !f2650

RESISTANCE OVERHEAT STAT

REMOVE 1X ELECTRICAL CONNECTOR FROM THE OVERHEAT STAT

Next: !p2654, !f2653

RESISTANCE FAN HARNESS

REMOVE SIGNAL CONTRO

Next: !p2753, !f2747

DISCONNECT FAN SPEED CONTROL CONNECTOR

REMOVE FAN SPEED CONNECTOR FROM FAN ASSEMBLY AND MAKE SAFE

Next: p2640, !f2768

RESISTANCE PUMP HARNESS (ERP)

REMOVE CONNECTOR FROM PUMP AND UNCLIP
COVER TO EXPOSE ELECTRICAL CONNECTIONS

Next: !p2856, !f2857

RESISTANCE PUMP HARNESS (ERP)

REMOVE CONNECTOR FROM PUMP AND UNCLIP
COVER TO EXPOSE ELECTRICAL CONNECTIONS

Next: !p2862, !f2863

RESISTANCE PUMP HARNESS (ERP)

REMOVE CONNECTOR FROM PUMP AND UNCLIP
COVER TO EXPOSE ELECTRICAL CONNECTIONS

Next: !p2865, !f2866

RESISTANCE PUMP HARNESS (ERP)

REMOVE CONNECTOR FROM PUMP AND UNCLIP
COVER TO EXPOSE ELECTRICAL CONNECTIONS

Next: !p2868, !f2869

RESISTANCE PUMP HARNESS (ERP)

REMOVE CONNECTOR FROM PUMP AND UNCLIP
COVER TO EXPOSE ELECTRICAL CONNECTIONS

Next: !p2871, !f2872

RESISTANCE FAN AND HARNESS

REMOVE CONNECTOR CN3 FROM THE PCB

Next: p2874, f2875

RESISTANCE SPARK GENERATOR AND HARNESS

REMOVE CONNECTOR CN1 FROM THE PCB

Next: p2878, f2879

RESISTANCE DIVERTER VALVE ACTUATOR & HARNESS

REMOVE CONNECTOR CN4 FROM THE PCB

Next: p2882, f2883

RESISTANCE GAS VALVE AND HARNESS - FUSE

REMOVE CONNECTOR CN2 FROM THE PCB

Next: !p2886, f2887

System Information

  • Total Tests: 694
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control