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:

VEISSMAN VITODENS 100-W B1KC COMBI

GLOBALLY REPLACED

Next: &1, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

INFORMATION CASE REMOVAL

Next: &3, !f2

OBSERVATION BOILER SELF CHECK

BOILER ON/OFF PUSHED IN, ON POSITION
ENSURE NO DEMANDS

Next: &71, ?4, ?6, ?8

BOILER CONTROLS SET UP & RESET INFORMATION

Next: &73, !f72

TYPE OF DIAGNOSTIC PROCEDURE

Next: &75, !f74

DHW FLOW RATE

Next: &89, f76

OBSERVATION PUMP RUNS

Next: &103, f90

OBSERVATION FAN RUNS

ENSURE BOILER IS COOL

Next: &216, f104

OBSERVATION BURNER IGNITION & ESTABLISH

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

PRESSURE GAS INLET (DHW DEMAND)

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: &763, !f357

CH OPERATION

Next: &1004, ?359, ?361, ?363, ?365

DISPLAY CODE 30 38

NOT USED

Next: &nff, f528

DISPLAY CODE 51 59

NOT USED

Next: &nff, f536

DISPLAY CODE 52 5A

NOT USED

Next: &nff, f544

DISPLAY CODE B0 B8

NOT USED

Next: &nff, f562

DISPLAY CODE E3

NOT USED

Next: &nff, f571

DISPLAY CODE E5

NOT USED

Next: &nff, f1082

DISPLAY CODE F0

NOT USED

Next: &nff, f585

DISPLAY CODE F1

NOT USED

Next: &nff, f603

DISPLAY CODE F2

NOT USED

Next: &nff, f617

DISPLAY CODE F3

NOT USED

Next: &nff, f1126

DISPLAY CODE F8

NOT USED

Next: &nff, f654

DISPLAY CODE F9

NOT USED

Next: &nff, f668

DISPLAY CODE FD FF

NOT USED

Next: &nff, f678

FUSE FURTHER INVESTIGATION

NOT USED

Next: &nff, f686

DHW OPERATION

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

DISPLAY CODE 10 18

NOT USED

Next: &nff, f959

DISPLAY CODE 0C

NOT USED

Next: &nff, f969

DISPLAY CODE 0A

NOT USED

Next: &nff, f984

COMFORT OPERATION (DHW PREHEAT)

SET BOILER TO DHW CO

Next: &nff, ?1008, ?1010

LITE DIAGNOSTIC

DIAGNOSIS RELIES ON

Next: &nff, !f1150

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f1149

HEADER FOR QADAI FLOW THERMISTOR

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1160

HEADER FOR QADAI GAS VALVE RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1166

HEADER FOR QADAI DHW FLOW SENSOR VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1172

HEADER FOR QADAI GAS VALVE VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1169

HEADER FOR QADAI FAN AC RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1175

HEADER FOR QADAI FAN AC VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1178

HEADER FOR QADAI DIVERTER VALVE RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1184

HEADER FOR FAN QADAI DC VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1181

HEADER FOR QADAI FLUE THERMISTOR

Next: &nff, f1163

HEADER FOR QADAI DHW SENSOR

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1188

DISPLAY CODE A3

INTENTIONALLY BLANK HEADER FOR A3 FAULT CODE

Next: &nff, f1193

HEADER FOR QADAI PUMP VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1224

HEADER FOR QADAI PUMP RESISTANCE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f1225

PUMP DOES NOT RUN

HARNESS CABLE - X20

Next: End

FUSE FURTHER INVESTIGATION

PUMP

Next: End

COMFORT MODE 2

Z REDIRECT

Next: End

FAULT CODE F2 2

THERMAL SWITCH

Next: End

SELF CHECK 2

SENSOR - TEMPERATURE

Next: End

BURNER DOES NOT IGNITE 1

ELECTRODE - IONISATION / IGNITION

Next: End

FAN DOES NOT RUN

SENSOR - TEMPERATURE

Next: End

FAN DOES NOT RUN 2

SENSOR - TEMPERATURE

Next: End

BURNER DOES NOT ESTABLISH 3

ELECTRODE - IONISATION / IGNITION

Next: End

PUMP DOES NOT RUN

CONTROL UNIT- VBC113

Next: End

FAULT CODE E5

IGNITION CABLE - 5K OHMS

Next: End

FAULT CODE E5

ELECTRODE - IONISATION / IGNITION

Next: End

FAULT CODE E5

CONTROL UNIT- VBC113

Next: End

FAULT CODE 5

CONTROL UNIT- VBC113

Next: End

ERROR CODE E5

ELECTRODE - IONISATION / IGNITION

Next: End

ERROR CODE FD FF

CONTROL UNIT- VBC113

Next: End

FD FF

ELECTRODE - IONISATION / IGNITION

Next: End

FAULT CODE 8

CONTROL UNIT- VBC113

Next: End

FAULT CODE 8

ELECTRODE - IONISATION / IGNITION

Next: End

FAULT CODE F3

IGNITION CABLE - 5K OHMS

Next: End

FAULT CODE FD FF 2

ELECTRODE - IONISATION / IGNITION

Next: End

FAULT CODE F3

CONTROL UNIT- VBC113

Next: End

FAULT CODE 3

CONTROL UNIT- VBC113

Next: End

F3

ELECTRODE - IONISATION / IGNITION

Next: End

BLANK FOR QADAI

Z REDIRECT

Next: End

BLANK FOR LITE DIAGNOSTIC

Z REDIRECT

Next: End

QADAI FLOW

SENSOR - TEMPERATURE

Next: End

QADAI

SENSOR - TEMPERATURE - FLUE GAS

Next: End

QADAI

GAS VALVE

Next: End

QADAI NO POWER TO GAS VALVE

CONTROL UNIT- VBC113

Next: End

QADAI

DHW FLOW SENSOR

Next: End

QADAI AC

FAN - NRG

Next: End

QADAI NO POWER TO FAN DC

CONTROL UNIT- VBC113

Next: End

QADAI

STEPPER MOTOR - LINEAR

Next: End

QADAI DHW

SENSOR - TEMPERATURE

Next: End

QADAI NO POWER TO FAN AC

CONTROL UNIT- VBC113

Next: End

BLANK FOR A3 FAULT CODE INFORMATION

Z REDIRECT

Next: End

INCORRECTLY FITTED

FLUE GAS SENSOR FITMENT

Next: End

BLANK FOR INFORMATION NEW PCB

Z REDIRECT

Next: End

QADAI

PUMP

Next: End

QADAI NO POWER TO PUMP

CONTROL UNIT- VBC113

Next: End

DISPLAY DOES NOT OPERATE

FUSE 2.5A (SLOW) 250V

Next: End

CASE REMOVAL

Z REDIRECT

Next: End

BURNER BAFFLES OR NOISY

CONDENSATE PIPEWORK

Next: End

BURNER BAFFLES OR NOISY

GAS INLET PRESSURE

Next: End

BURNER BAFFLES OR NOISY

FLUE

Next: End

BURNER DOES NOT IGNITE 2

CONDENSATE PIPEWORK

Next: End

BURNER DOES NOT ESTABLISH

GAS INLET PRESSURE

Next: End

BURNER DOES NOT IGNITE

CONDENSATE PIPEWORK

Next: End

BURNER DOES NOT IGNITE

GAS VALVE / CONTROLLER - VBC113

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BURNER DOES NOT IGNITE 3

GAS VALVE

Next: End

BURNER DOES NOT IGNITE

ELECTRODE - IONISATION / IGNITION

Next: End

BURNER DOES NOT IGNITE

IGNITION CABLE - 5K OHMS

Next: End

BURNER DOES NOT IGNITE 4

ELECTRODE - IONISATION / IGNITION

Next: End

BURNER DOES NOT IGNITE 2

IGNITION CABLE - 5K OHMS

Next: End

GAS INLET DHW DEMAMD

GAS INLET PRESSURE

Next: End

EXCESSIVE SYSTEM PRESSURE

EXPANSION VESSEL

Next: End

BOILER @ TEMP RADS COOL

SYSTEM PRESSURE

Next: End

BOILER @ TEMP RADS COOL

SERVICE VALVES

Next: End

BOILER @ TEMP RADS COOL 3

HYDRAULIC ASSEMBLY

Next: End

BOILER @ TEMP RADS COOL

PUMP

Next: End

BOILER @ TEMP RADS COOL

CARTRIDGE - BYPASS VALVE

Next: End

CH DOES NOT RESPOND

INTERNAL TIMER/PROGRAMMER

Next: End

SELF CHECK

DOMESTIC PLUMBING

Next: End

BOILER TEMP LOW RADS COOL

SYSTEM PRESSURE

Next: End

BOILER TEMP LOW RADS COOL

PUMP

Next: End

BOILER TEMP LOW RADS COOL

SENSOR - TEMPERATURE

Next: End

FAULT CODE 30

SENSOR - TEMPERATURE

Next: End

FAULT CODE 30

CONTROL UNIT- VBC113

Next: End

FAULT CODE 51

SENSOR - TEMPERATURE

Next: End

FAULT CODE 51

CONTROL UNIT- VBC113

Next: End

FAULT CODE 52 5A 2

DHW FLOW SENSOR

Next: End

SELF CHECK

SENSOR - TEMPERATURE

Next: End

FAULT CODE 52 5A

HARNESS CABLE - X20

Next: End

FAULT CODE 52 5A

CONTROL UNIT- VBC113

Next: End

FAULT CODE 80

SENSOR - TEMPERATURE - FLUE GAS

Next: End

FAULT CODE B0 B8

CONTROL UNIT- VBC113

Next: End

FAULT CODE E3

THERMAL SWITCH

Next: End

FAULT CODE E3

CONTROL UNIT- VBC113

Next: End

FAULT CODE F0

CONTROL UNIT- VBC113

Next: End

NO DISPLAY

CONTROL UNIT- VBC113

Next: End

FAULT CODE F1

SENSOR - TEMPERATURE - FLUE GAS

Next: End

FAULT CODE F1

CONTROL UNIT- VBC113

Next: End

FAULT CODE F1

SYSTEM PRESSURE

Next: End

FAULT CODE F1

PUMP

Next: End

FAULT CODE F1

SENSOR - TEMPERATURE

Next: End

FAULT CODE F1

HEAT EXCHANGER

Next: End

FAULT CODE E3

SYSTEM PRESSURE

Next: End

FAULT CODE E3 2

CONTROL UNIT- VBC113

Next: End

FAULT CODE E3 2

PUMP

Next: End

FAULT CODE E3

SENSOR - TEMPERATURE

Next: End

FAULT CODE F2

HEAT EXCHANGER - PLATE

Next: End

FAULT CODE E3 3

CONTROL UNIT- VBC113

Next: End

FAULT CODE F2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F8

GAS VALVE

Next: End

NO DISPLAY

FUSE (FUSED SPUR)

Next: End

FAULT CODE F8

ELECTRODE - IONISATION / IGNITION

Next: End

FAULT CODE F8

CONTROL UNIT- VBC113

Next: End

FAULT CODE F9 FA FC 2

CONTROL UNIT- VBC113

Next: End

FAULT CODE FD FF

EMC FIELD

Next: End

FAULT CODE FD FF

ELECTRODE - IONISATION / IGNITION

Next: End

FAULT CODE FD FF

CONTROL UNIT- VBC113

Next: End

FUSE FURTHER INVESTIGATION

FAN - NRG

Next: End

FUSE FURTHER INVESTIGATION

GAS VALVE

Next: End

SELF CHECK

DHW FLOW SENSOR

Next: End

FAULT CODE F9

CABLE HARNESS - FAN

Next: End

FAULT CODE F9 FA FC

HARNESS CABLE - X20

Next: End

FAULT CODE F9

CONTROL UNIT- VBC113

Next: End

USER CONTROLS

Z REDIRECT

Next: End

FAULT CODE FD FF

IGNITION CABLE - 5K OHMS

Next: End

TYPE OF DIAGNOSTIC PROCEDURE

Z REDIRECT

Next: End

CH DOES NOT RESPOND

CONTROL UNIT- VBC113

Next: End

CH DOES NOT RESPOND 4

CONTROL UNIT- VBC113

Next: End

DHW HOT COOL

SYSTEM PRESSURE

Next: End

DHW HOT COOL 2

SENSOR - TEMPERATURE

Next: End

DHW HOT COOL

SENSOR - TEMPERATURE

Next: End

DHW HOT COOL

PUMP

Next: End

DHW FLOW RATE

SERVICE VALVES

Next: End

DHW HOT COOL

HEAT EXCHANGER - PLATE

Next: End

DHW TOO HOT

SENSOR - TEMPERATURE

Next: End

DHW COOL RADS HEAT 2

HYDRAULIC ASSEMBLY

Next: End

DHW COOL RADS COOL

SYSTEM PRESSURE

Next: End

DHW COOL RADS COOL 2

SENSOR - TEMPERATURE

Next: End

DHW FLOW RATE

COLD WATER SUPPLY

Next: End

DHW COOL RADS COOL

SENSOR - TEMPERATURE

Next: End

DHW COOL RADS COOL

PUMP

Next: End

DHW COOL RADS COOL

PLUMBING ISSUE

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER - PLATE

Next: End

SERVICE MODE 2

Z REDIRECT

Next: End

FAULT CODE F2

CARTRIDGE - BYPASS VALVE

Next: End

DHW COOL RADS HEAT

STEPPER MOTOR - LINEAR

Next: End

BOILER @ TEMP RADS COOL 2

STEPPER MOTOR - LINEAR

Next: End

DISPLAY DOES NOT OPERATE 2

CONTROL UNIT- VBC113

Next: End

FAULT CODE F1 2

CONTROL UNIT- VBC113

Next: End

FAULT CODE 2

Z REDIRECT

Next: End

BURNER DOES NOT ESTABLISH

IGNITION CABLE - 5K OHMS

Next: End

BURNER DOES NOT ESTABLISH 2

ELECTRODE - IONISATION / IGNITION

Next: End

BOILER @ TEMP RADS COOL

FLUE

Next: End

DISPLAY DOES NOT OPERATE

FAN - NRG

Next: End

FAULT CODE

Z REDIRECT

Next: End

PUMP DOES NOT RUN 3

CONTROL UNIT- VBC113

Next: End

FAULT CODE 10 18

CONTROL UNIT- VBC113

Next: End

FAULT CODE 10 18 2

CONTROL UNIT- VBC113

Next: End

FAULT CODE 0C

Next: End

FAULT CODE 0C

CONTROL UNIT- VBC113

Next: End

FAULT CODE 0A

CONTROL UNIT- VBC113

Next: End

FAULT CODE 0A 2

CONTROL UNIT- VBC113

Next: End

PREHEAT

CONTROL UNIT- VBC113

Next: End

COMFORT MODE

Z REDIRECT

Next: End

FAULT CODE F2

HARNESS CABLE - X20

Next: End

FAULT CODE F2 2

CONTROL UNIT- VBC113

Next: End

SELF CHECK 2

CONTROL UNIT- VBC113

Next: End

BOILER TEMP LOW RADS COOL

CONTROL UNIT- VBC113

Next: End

BOILER TEMP LOW RADS COOL

OUTDOOR SENSOR

Next: End

BOILER TEMP LOW RADS COOL 2

CONTROL UNIT- VBC113

Next: End

DHW FLOW RATE

HEAT EXCHANGER - PLATE

Next: End

BURNER DOES NOT IGNITE 1

GAS VALVE

Next: End

BURNER DOES NOT IGNITE 1

CYLINDER FLAME BODY

Next: End

BURNER DOES NOT IGNITE 1

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE 5

ELECTRODE - IONISATION / IGNITION

Next: End

FAN DOES NOT RUN

CONTROL UNIT- VBC113

Next: End

BURNER DOES NOT ESTABLISH 1

CONTROL UNIT- VBC113

Next: End

BURNER DOES NOT ESTABLISH 1

CYLINDER FLAME BODY

Next: End

BURNER DOES NOT ESTABLISH 1

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE 6

ELECTRODE - IONISATION / IGNITION

Next: End

FAULT CODE E5

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE 5

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

ERROR CODE FD FF

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CDOE 8

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE F3

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE 3

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FLOW THERMISTOR

RESULT AS EXPECTED

Next: End

FLUE TEMPERATURE SENSOR

RESULT AS EXPECTED

Next: End

GAS VALVE

RESULT AS EXPECTED

Next: End

PCB VOLTAGE TO GAS VALVE

RESULT AS EXPECTED

Next: End

DHW FLOW SENSOR

RESULT AS EXPECTED

Next: End

FAN

RESULT AS EXPECTED

Next: End

PCB VOLTAGE AC TO FAN

RESULT AS EXPECTED

Next: End

PCB VOLTAGE DC TO FAN

RESULT AS EXPECTED

Next: End

STEPPER MOTOR

RESULT AS EXPECTED

Next: End

DHW TEMPERATURE SENSOR

RESULT AS EXPECTED

Next: End

A3 FAULT CODE

SENSOR - TEMPERATURE - FLUE GAS

Next: End

PCB VOLTAGE TO PUMP

RESULT AS EXPECTED

Next: End

PUMP

RESULT AS EXPECTED

Next: End

FUSE FURTHER INVESTIGATION

Z REDIRECT

Next: End

BURNER BAFFLES OR NOISY

CONDENSATE P-TRAP

Next: End

BURNER BAFFLES OR NOISY

VENTURI

Next: End

BURNER BAFFLES OR NOISY

FAN - NRG

Next: End

BURNER BAFFLES OR NOISY

GAS VALVE

Next: End

BURNER BAFFLES OR NOISY

CYLINDER FLAME BODY

Next: End

BURNER BAFFLES OR NOISY

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE 2

CONDENSATE P-TRAP

Next: End

BURNER DOES NOT IGNITE

CONDENSATE P-TRAP

Next: End

BURNER DOES NOT IGNITE

CONTROL UNIT- VBC113

Next: End

BURNER DOES NOT IGNITE

CABLE GAS VALVE / CONTROLLER - VBC113

Next: End

BURNER DOES NOT IGNITE

GAS INLET PRESSURE

Next: End

BURNER DOES NOT IGNITE

CABLE - GAS VALVE

Next: End

BURNER DOES NOT IGNITE

VENTURI

Next: End

BURNER DOES NOT IGNITE

FAN - NRG

Next: End

BURNER DOES NOT IGNITE 2

GAS VALVE

Next: End

BURNER DOES NOT IGNITE 2

CYLINDER FLAME BODY

Next: End

BURNER DOES NOT IGNITE 2

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

BURNER DOES NOT IGNITE

CYLINDER FLAME BODY

Next: End

BURNER DOES NOT IGNITE

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE 2

ELECTRODE - IONISATION / IGNITION

Next: End

BURNER DOES NOT IGNITE 3

CONTROL UNIT- VBC113

Next: End

EXCESSIVE PRESSURE

PIPE - EXPANSION VESSEL

Next: End

BOILER @ TEMP RADS COOL

CONTROL UNIT- VBC113

Next: End

BOILER @ TEMP RADS COOL 2

CONTROL UNIT- VBC113

Next: End

BOILER @ TEMP RADS COOL

STEPPER MOTOR - LINEAR

Next: End

BOILER @ TEMP RADS COOL

Next: End

CH DOES NOT RESPOND 3

CONTROL UNIT- VBC113

Next: End

CH DOES NOT RESPOND2

Next: End

CH DOES NOT RESPOND 2

CONTROL UNIT- VBC113

Next: End

CH DOES NOT RESPOND

Next: End

SELF CHECK 3

CONTROL UNIT- VBC113

Next: End

SELF CHECK

Next: End

BOILER SELF CHECK

FROST PROTECTION NORMAL OPERATION

Next: End

FAULT CODE 30

HARNESS CABLE - X20

Next: End

FAULT CODE 30

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE 51

HARNESS CABLE - X20

Next: End

SELF CHECK

CONTROL UNIT- VBC113

Next: End

FAULT CODE 51

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE 52 5A

DHW FLOW SENSOR

Next: End

FAULT CODE 52 5A

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE B0

HARNESS CABLE - X20

Next: End

FAULT CODE B0

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

DISPLAY FURTHER INVESTIGATION

Z REDIRECT

Next: End

FAULT CODE E3

HARNESS CABLE - X20

Next: End

FAULT CODE E3

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE F0

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

NO DISPLAY 2

CONTROL UNIT- VBC113

Next: End

FAULT CODE F1

BOILER RESET - FAULT CODE F1

Next: End

NO DISPLAY

Next: End

FAULT CODE F2

THERMAL SWITCH

Next: End

FAULT CODE F2

CONTROL UNIT- VBC113

Next: End

NO DISPLAY

Z REDIRECT

Next: End

FAULT CODE F8

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE F8 2

GAS VALVE

Next: End

FAULT CDOE F8

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE F9 FA FC

FAN - NRG

Next: End

FAULT CODE FD FF

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FUSE FURTHER INVESTIGATION

CONTROL UNIT - VBC113 - FUSE BLOWN

Next: End

FUSE FURTHER INVESTIGATION

CABLE HARNESS - FAN

Next: End

FUSE FURTHER INVESTIGATION 2

CABLE - GAS VALVE

Next: End

DHW HOT COOL

CONTROL UNIT- VBC113

Next: End

DHW TOO HOT

CONTROL UNIT- VBC113

Next: End

DHW COOL RADS HEAT

HYDRAULIC ASSEMBLY

Next: End

DHW COOL RADS HEAT 2

CONTROL UNIT- VBC113

Next: End

DHW COOL RADS HEAT

CONTROL UNIT- VBC113

Next: End

DHW COOL RADS HEAT 2

STEPPER MOTOR - LINEAR

Next: End

DHW COOL RADS COOL

CONTROL UNIT- VBC113

Next: End

SERVICE MODE

Z REDIRECT

Next: End

DHW FLOW RATE

HYDRAULIC ASSEMBLY

Next: End

FAULT CODE F2

FAULT CODE F2 - OVERHEAT

Next: End

DHW FLOW RATE

DHW FLOW SENSOR

Next: End

BURNER DOES NOT IGNITE 2

VENTURI

Next: End

BURNER DOES NOT IGNITE 2

FAN - NRG

Next: End

DHW COOL RADS HEAT

HARNESS - CABLE - STEPPER MOTOR

Next: End

BOILER @ TEMP RADS COOL

HARNESS - CABLE - STEPPER MOTOR

Next: End

DHW FLOW RATE

LIMITER TYPE - WATER LEVEL

Next: End

NO DISPLAY

DHW FLOW SENSOR

Next: End

PUMP DOES NOT RUN

PUMP

Next: End

FAULT CODE F1 2

PUMP

Next: End

FAULT CODE E3

PUMP

Next: End

BURNER DOES NOT ESTABLISH

CONTROL UNIT- VBC113

Next: End

BURNER DOES NOT ESTABLISH

CYLINDER FLAME BODY

Next: End

BURNER DOES NOT ESTABLISH

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE 3

ELECTRODE - IONISATION / IGNITION

Next: End

PUMP DOES NOT RUN 2

CONTROL UNIT- VBC113

Next: End

BOILER @ TEMP RADS COOL

VENTURI

Next: End

BOILER @ TEMP RADS COOL

FAN - NRG

Next: End

BOILER @ TEMP RADS COOL

CYLINDER FLAME BODY

Next: End

BOILER @ TEMP RADS COOL

HEAT EXCHANGER

Next: End

BOILER @ TEMP RADS COOL 3

CONTROL UNIT- VBC113

Next: End

FAULT CODE 3

Z REDIRECT

Next: End

FAULT CODE 10 18

OUTDOOR SENSOR

Next: End

FAULT CODE 10 18

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE 10 18 2

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

PUMP DOES NOT RUN

DHW FLOW SENSOR

Next: End

FAULT CODE 0C

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE 0A

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

FAULT CODE 0A

CO LIMITER / GAS PRESSURE SWITCH

Next: End

FAULT CODE 0A

FAULT CODE RESET - RETEST BOILER OPERATION

Next: End

DHW COMFORT (PREHEAT) OPERATION INCORRECT

CHARACTERISTIC TEST FROM COMFORT OPERATION (DHW PREHEAT)

Next: !p1009

HOW TO SET DHW COMFORT (PREHEAT) FUNCTION

CHARACTERISTIC TEST FROM COMFORT OPERATION (DHW PREHEAT)

Next: p1011

OUTDOOR TEMP SENSOR INSTALLED - RESISTANCE NOT AS EXPECTED

CHARACTERISTIC TEST FROM RESISTANCE OUTSIDE TEMPERATURE SENSOR AND HARNESS (CH)

Next: !p1030

NO OUTDOOR TEMP SENSOR FITTED

CHARACTERISTIC TEST FROM RESISTANCE OUTSIDE TEMPERATURE SENSOR AND HARNESS (CH)

Next: !p1032

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1052

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1054

ELECTRODE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

Next: !p1056

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1076

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1078

ELECTRODE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

Next: !p1080

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p218

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p220

BURNER IGNITES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p222

AIR INTAKE RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p234

VENTURI RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p236

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p239

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p241

NO PRESSURE DROP OBSERVED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: p279

PRESSURE DROPS BELOW 10MB N G / 25MB L P G

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: !p281

AIR INTAKE RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p291

VENTURI RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p293

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p296

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p298

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p310

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p312

ELECTRODE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

Next: !p314

BOILER DOES NOT RESPOND TO CH DEMAND

CHARACTERISTIC TEST FROM CH OPERATION

Next: p360

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

CHARACTERISTIC TEST FROM CH OPERATION

Next: p362

BOILER TEMPERATURE AND SYSTEM TEMPERATURE LOW - BOILER REMAINS LIT

CHARACTERISTIC TEST FROM CH OPERATION

Next: p438

EXCESSIVE SYSTEM PRESSURE RISE AS SYSTEM HEATS

CHARACTERISTIC TEST FROM CH OPERATION

Next: p366

PUMP RUNS CONTINUOUSLY OR BOILER ATTEMPTS TO FIRE AFTER SELF CHECK COMPLETE

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p1203

VOLTAGE NOT AS EXPECTED ON TEST 1.

CHARACTERISTIC TEST FROM VOLTAGE DIVERTER VALVE

Next: p408

VOLTAGES NOT AS EXPECTED ON TEST 2/3.

CHARACTERISTIC TEST FROM VOLTAGE DIVERTER VALVE

Next: !p410

FAULT CODE DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p902

BOILER GOES TO FAULT CODE F2 BEFORE 80 °C

CHARACTERISTIC TEST FROM OBSERVATION CH - OVERHEAT OCCUR

Next: !p639

TEMPERATURE EXCEEDS 85 °C & CONTINUES TO FIRE

CHARACTERISTIC TEST FROM OBSERVATION CH - OVERHEAT OCCUR

Next: !p641

DELAY IN RETURNING TO STANDING PRESSURE

CHARACTERISTIC TEST FROM PRESSURE STANDING RETURN

Next: !p660

BOILER DOES NOT RESET - FAULT CODE REMAINS THE SAME

CHARACTERISTIC TEST FROM PRESSURE STANDING RETURN

Next: p1102

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

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p765

DHW COOL - RADIATORS BEGIN TO HEAT OR INCREASE IN TEMPERATURE

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p767

DHW TOO HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p769

DHW RUNS HOT THEN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p771

VOLTAGE NOT AS EXPECTED ON TEST 1.

CHARACTERISTIC TEST FROM VOLTAGE DIVERTER VALVE

Next: p788

VOLTAGES NOT AS EXPECTED ON TEST 2/3.

CHARACTERISTIC TEST FROM VOLTAGE DIVERTER VALVE

Next: !p790

DISPLAY DOES NOT OPERATE CORRECTLY

CHARACTERISTIC TEST FROM OBSERVATION BOILER SELF CHECK

Next: p9

GAS RATE INCORRECT @ 100% OUTPUT

Next: p928

HOW TO SET BOILER TO 100% OUTPUT

CHARACTERISTIC TEST FROM BOILER OUTPUT

Next: p815

1 RETURN CASING BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p84

2 FLOW SENSOR BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p86

AIR INTAKE RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p860

VENTURI RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p862

3 FLOW LIMITER BLOCKED OR RESTRICTED

CHARACTERISTIC TEST FROM INSPECTION DHW FLOW COMPONENTS

Next: !p88

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p922

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p924

ELECTRODE GAP TO BURNER SURFACE INCORRECT

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

Next: !p926

AIR INTAKE RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p934

VENTURI RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION AIR INTAKE AND VENTURI

Next: !p936

BURNER RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p939

HEAT EXCHANGER FLUEWAYS RESTRICTED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p941

RESISTANCE NOT AS EXPECTED

CHARACTERISTIC TEST FROM RESISTANCE OUTSIDE TEMPERATURE SENSOR AND HARNESS

Next: !p962

NO OUTSIDE TEMPERATURE SENSOR FITTED

CHARACTERISTIC TEST FROM RESISTANCE OUTSIDE TEMPERATURE SENSOR AND HARNESS

Next: p964

18/07/2022 13:13:37 2109_1_50_1 20/10/2022 11:32:45

07/09/2022 15:35:49

Next: End

RESISTANCE OVERHEAT STAT AND HARNESS

ENSURE BOILER IS COOL
REMOVE CONNECTOR X20 FROM PCB

Next: !p1018, f1015

RESISTANCE OVERHEAT STAT

REMOVE 1 X SPADE CONNECTOR FROM OVERHEAT STAT

Next: !p1016, !f1017

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p1020, !f1021

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p105, !f106

RESISTANCE ELECTRODE AND LEAD

REMOVE ELECTRODE ASSEMBLY FROM BOILER
DISCONNECT LEAD FROM THE PCB

Next: p1049, !f1057

RESISTANCE ELECTRODE AND LEAD

REMOVE ELECTRODE ASSEMBLY FROM BOILER
DISCONNECT LEAD FROM THE PCB

Next: p1073, !f1081

OBSERVATION WHICH TYPE OF ELECTRODE IS FITTED

Next: p1090, f1097

RESISTANCE ELECTRODE AND LEAD

REMOVE ELECTRODE ASSEMBLY FROM BOILER
DISCONNECT LEAD FROM THE PCB

Next: p1098, !f1101

VOLTAGE FAN ASSEMBLY (MAINS VOLTAGE)

{GAINPCBACS}

Next: p869, f13

RESISTANCE ELECTRODE AND LEAD

REMOVE ELECTRODE ASSEMBLY FROM BOILER
DISCONNECT LEAD FROM THE PCB

Next: p1117, !f1120

INSPECTION IGNITION / IONISATION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER
DISCONNECT LEAD FROM THE PCB

Next: p1122, !f1125

OBSERVATION WHICH TYPE OF ELECTRODE IS FITTED

Next: p1134, f1141

RESISTANCE ELECTRODE AND LEAD

REMOVE ELECTRODE ASSEMBLY FROM BOILER
DISCONNECT LEAD FROM THE PCB

Next: p1142, !f1146

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p1161, !f1162

RESISTANCE FLUE TEMPERATURE SENSOR

DISCONNECT FLUE SENSOR INLINE CONNECTOR

Next: !p1164, !f1165

RESISTANCE GAS VALVE AND HARNESS (FUSE)

REMOVE CONNECTOR 35 FROM THE PCB

Next: !p1167, !f1168

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: !p1170, !f1171

VOLTAGE FLOW SENSOR - DEMAND

{GAINPCBACS}

Next: !p1173, !f1174

RESISTANCE FAN AND HARNESS

REMOVE CONNECTOR 100 FROM THE PCB

Next: !p1176, !f1177

VOLTAGE FAN ASSEMBLY (MAINS VOLTAGE)

{GAINPCBACS}

Next: !p1179, !f1191

VOLTAGE FAN CONTROL

REMOVE 1 CONNECTOR F

Next: !p1182, !f1183

RESISTANCE STEPPER MOTOR

REMOVE DIVERTER VALVE MOTOR FROM MANIFOLD
REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE MOTOR

Next: !p1185, !f1186

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM DHW SENSOR

Next: !p1189, !f1190

INFORMATION A3 FAULT CODE

Next: p1194, !f1196

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p1229, !f1230

RESISTANCE PUMP AND HARNESS

REMOVE CONNECTOR 20 FROM THE PCB

Next: !p1231, !f1228

RESISTANCE FUSE F4 (PCB)

REMOVE PCB FUSE

Next: p60, f15

FUSE FURTHER INVESTIGATION - F4 (PCB)

Next: !p16, !f17

INSPECTION CONDENSATE PIPE

Next: !p225, !f226

INSPECTION CONDENSATE PIPE

Next: !p244, !f245

INSPECTION CONDENSATE PIPE

Next: !p268, !f269

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR 35 FROM THE PCB

Next: !p272, f273

RESISTANCE GAS VALVE

REMOVE CONNECTOR FROM GAS VALVE

Next: !p274, !f275

RESISTANCE GAS VALVE

REMOVE CONNECTOR FROM GAS VALVE

Next: !p286, !f287

RESISTANCE IGNITION LEAD

DISCONNECT SPARK IGNITION LEAD FROM ELECTRODE AND PCB

Next: p317, !f318

VOLTAGE DIVERTER VALVE

{GAINPCBACS}
NO DEMAND

Next: p406, ?407, ?409

ISOLATE COLD FEED (BOILER)

ISOLATE COLD WATER FEED TO BOILER

Next: p42, !f43

DISCONNECT INTERNAL PROGRAMMER

DISCONNECT INTERNAL PROGRAMMER CONNECTOR (X7) FROM PCB
CH DEMAND FROM EXTERNAL CONTROLS

Next: p421, !f422

VOLTAGE SEND EXTERNAL CONTROLS

Next: !p425, !f762

VOLTAGE SEND EXTERNAL CONTROLS

Next: !p433, !f760

DISCONNECT EXTERNAL CONTROLS

{GAINPCBACS}
DISCONNECT EXTERNAL CONTROLS FROM TERMINAL BLOCK, MAKE SAFE
NO DEMANDS

Next: !p48, f1019

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: p529, f530

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p54, !f55

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: !p531, !f532

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: p537, f538

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM DHW SENSOR

Next: !p539, !f540

INSPECTION WATER INGRESS - FLOW SENSOR

REMOVE ELECTRICAL CONNECTOR TO FLOW SENSOR

Next: p545, !f546

RESISTANCE FLOW SENSOR HARNESS

REMOVE ELECTRICAL CONNECTOR TO FLOW SENSOR
REMOVE CONNECTOR X20 FROM PCB

Next: !p549, !f550

RESISTANCE FLUE TEMPERATURE SENSOR AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: p563, f564

RESISTANCE FLUE TEMPERATURE SENSOR

DISCONNECT FLUE SENSOR INLINE CONNECTOR

Next: !p565, !f566

RESISTANCE OVERHEAT STAT AND HARNESS

ENSURE BOILER IS COOL
REMOVE CONNECTOR X20 FROM PCB

Next: p572, f573

RESISTANCE OVERHEAT STAT

REMOVE 1 X SPADE CONNECTOR FROM OVERHEAT STAT

Next: !p574, !f575

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p586, !f587

RESISTANCE FLUE TEMPERATURE SENSOR

DISCONNECT FLUE SENSOR INLINE CONNECTOR

Next: p604, !f605

RESET APPLIANCE - FAULT CODE F2

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p618, f1014

RESISTANCE FUSED SPUR

REMOVE FUSE FROM FUSED SPUR

Next: !p63, f64

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p913, !f627

FUSE FURTHER INVESTIGATION - FUSED SPUR

Next: !p65, !f66

INSTALLATION TIGHTNESS TEST

Next: p655, !f656

VOLTAGE FAN ASSEMBLY (MAINS VOLTAGE)

{GAINPCBACS}

Next: p669, !f670

OBSERVATION - STRONG INTERFERENCE (EMC) FIELD PRESENT

Next: p1108, !f680

RESISTANCE FAN AND HARNESS

REMOVE CONNECTOR 100 FROM THE PCB

Next: p687, f688

RESISTANCE FAN

REMOVE MAINS VOLTAGE CONNECTOR TO FAN ASSEMBLY

Next: !p757, !f690

RESISTANCE GAS VALVE (FUSE)

REMOVE CONNECTOR FROM GAS VALVE.

Next: !p758, !f698

OBSERVATION DHW INLET SERVICE VALVE

Next: p77, !f78

VOLTAGE DIVERTER VALVE

{GAINPCBACS}
NO DEMAND

Next: p786, ?787, ?789

RESISTANCE STEPPER MOTOR

REMOVE DIVERTER VALVE MOTOR FROM MANIFOLD
REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE MOTOR

Next: !p864, !f865

RESISTANCE STEPPER MOTOR

REMOVE DIVERTER VALVE MOTOR FROM MANIFOLD
REMOVE ELECTRICAL CONNECTOR FROM DIVERTER VALVE MOTOR

Next: !p867, !f868

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p910, !f891

OBSERVATION DISPLAY DHW DEMAND

Next: p91, f92

VOLTAGE FLOW SENSOR - DEMAND

{GAINPCBACS}

Next: !p93, f94

VOLTAGE FLOW SENSOR - SUPPLY

REMOVE CONNECTOR FROM FLOW SENSOR

Next: p95, !f96

RESISTANCE OUTSIDE TEMPERATURE SENSOR AND HARNESS

IF INSTALLED DISCONNECT OUTDOOR TEMPERATURE SENSOR
FROM TERMINAL BLOCK PINS 3 & 4

Next: p960, ?961, ?963

VOLTAGE MAINS INPUT PCB - FAULT CODE 0C

{GAINPCBACS}

Next: p970, !f971

OBSERVATION PCB CONNECTOR X15

{GAINPCBACS}

Next: p985, f986

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p999, !f997

DISCONNECT CONNECTOR X15

REMOVE CONNECTOR X15 FROM PCB AND MAKE SAFE

Next: !p995, !f993

SET DHW COMFORT (PREHEAT) FUNCTION

THE COMFORT FUNCTION

Next: !p1012, !f1013

RESISTANCE OUTSIDE TEMPERATURE SENSOR AND HARNESS (CH)

IF INSTALLED DISCONNECT OUTDOOR TEMPERATURE SENSOR
FROM TERMINAL BLOCK PINS 3 & 4

Next: !p1025, ?1029, ?1031

OBSERVATION WHICH TYPE OF ELECTRODE IS FITTED

Next: p323, f1048

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

REMOVE BURNER MODULE UNIT ASSEMBLY FROM BOILER

Next: !p1050, ?1051, ?1053, ?1055

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM DHW SENSOR

Next: !p107, !f108

OBSERVATION WHICH TYPE OF ELECTRODE IS FITTED

Next: p914, f1072

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

REMOVE BURNER MODULE UNIT ASSEMBLY FROM BOILER

Next: !p1074, ?1075, ?1077, ?1079

RESISTANCE IGNITION LEAD

DISCONNECT SPARK IGNITION LEAD FROM ELECTRODE AND PCB

Next: p1091, !f1092

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p1093, !f1094

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1095, !f1096

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1099, !f1100

OBSERVATION WHICH TYPE OF ELECTRODE IS FITTED

Next: p662, f1121

OBSERVATION WHICH TYPE OF ELECTRODE IS FITTED

Next: p721, f1116

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1118, !f1119

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1123, !f1124

RESISTANCE IGNITION LEAD

DISCONNECT SPARK IGNITION LEAD FROM ELECTRODE AND PCB

Next: p1135, !f1136

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p1137, !f1138

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1139, !f1140

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1143, !f1144

INSPECTION FLUE GAS SENSOR FITMENT

Next: !p1202, !f1197

INFORMATION PCB REPLACEMENT

IF THE APPLIANCE HAS

Next: p5, !f1221

INSPECTION CONDENSATE SYPHON

GAIN ACCESS TO CONDENSATE SYPHON

Next: p266, f267

INSPECTION CONDENSATE SYPHON

GAIN ACCESS TO CONDENSATE SYPHON

Next: p242, f243

INSPECTION CONDENSATE SYPHON

GAIN ACCESS TO CONDENSATE SYPHON

Next: p223, f224

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p227, !f228

INSPECTION FLUE

Next: p229, !f230

INSPECTION AIR INTAKE AND VENTURI

REMOVE AIR INTAKE MA

Next: p231, ?233, ?235

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

REMOVE BURNER MODULE UNIT ASSEMBLY FROM BOILER

Next: !p237, ?238, ?240

PRESSURE GAS INLET

ATTACH U-GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p1058, !f247

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}

Next: p270, f271

PRESSURE GAS INLET DROP

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p276, ?278, ?280

OBSERVATION SPARKING OCCURS

REMOVE ELECTRODE LEA

Next: p845, f316

INSPECTION FLUE

Next: p282, !f283

RESISTANCE GAS VALVE AND HARNESS

REMOVE CONNECTOR 35 FROM THE PCB

Next: p284, f285

INSPECTION AIR INTAKE AND VENTURI

REMOVE AIR INTAKE MA

Next: p288, ?290, ?292

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

REMOVE BURNER MODULE UNIT ASSEMBLY FROM BOILER

Next: !p294, ?295, ?297

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p305, !f306

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

REMOVE BURNER MODULE UNIT ASSEMBLY FROM BOILER

Next: !p307, ?309, ?311, ?313

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: !p319, !f320

RESISTANCE IGNITION LEAD

DISCONNECT SPARK IGNITION LEAD FROM ELECTRODE AND PCB

Next: p299, !f335

OBSERVATION INTERNAL OR EXTERNAL PROGRAMMER FITTED

Next: p419, f420

INSPECTION PRESSURE SYSTEM

Next: p400, !f401

PRESSURE EXPANSION VESSEL

BOILER DRAINED, PRIMARY SYSTEM WATER

Next: !p367, !f368

OBSERVATION FLOW TEMPERATURE DISPLAYED (FROST PROTECTION)

NO DEMANDS

Next: p46, f47

INSPECTION SERVICE VALVES

Next: p402, !f403

OBSERVATION DIVERTER VALVE OPERATION (CH)

Next: p404, f405

PUMP LIMPET TEST

Next: p415, !f416

OBSERVATION DIVERTER VALVE PADDLE

REMOVE DIVERTER VALVE STEPPER MOTOR

Next: !p413, !f414

RESISTANCE STEPPER MOTOR AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p411, f866

INSPECTION INTERNAL BY-PASS

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE INTERNAL BY-PASS

Next: !p417, !f418

VOLTAGE RETURN EXTERNAL CONTROLS

{GAINPCBACS}

Next: !p431, f432

DISCONNECT FLOW SENSOR (DHW)

REMOVE ELECTRICAL CONNECTOR TO DHW FLOW SENSOR

Next: !p44, !f70

VOLTAGE RETURN EXTERNAL CONTROLS

{GAINPCBACS}

Next: !p423, f424

INSPECTION PRESSURE SYSTEM

Next: p439, !f440

PUMP LIMPET TEST

Next: p441, !f442

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p1022, !f444

TEMPERATURE FLOW PIPE (FROST PROTECTION)

ATTACH FGA TEMPERATURE SENSOR TO PRIMARY HEAT EXCHANGER FLOW CONNECTION

Next: !p52, f53

OBSERVATION DISPLAY CH OR DHW SYMBOL

ENSURE NO DEMANDS

Next: p40, f41

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p533, !f534

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p541, !f542

RESISTANCE FLOW SENSOR AND HARNESS

REMOVE CONNECTOR X20 FROM PCB

Next: p547, f548

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p551, !f552

FURTHER INVESTIGATION DISPLAY OPERATION

Next: !p57, !f59

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p567, !f569

RESET APPLIANCE - FAULT CODE E3

ENSURE BOILER IS COOL
ENSURE NO DEMANDS ARE PRESENT

Next: !p576, !f577

VOLTAGE MAINS INPUT PCB

{GAINPCBACS}

Next: !p61, f62

RESET APPLIANCE - FAULT CODE F1

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p606, !f607

INSPECTION PRESSURE SYSTEM

Next: p881, !f609

PUMP LIMPET TEST

Next: p610, !f611

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p612, !f613

OBSERVATION FLUE GAS TEMPERATURE

INSERT TEMPERATURE PROBE INTO FLUE GAS TEST POINT

Next: !p614, !f615

INSPECTION PRESSURE SYSTEM

Next: p622, !f623

OBSERVATION PUMP RUNS

Next: p624, f625

PUMP LIMPET TEST

Next: p630, !f631

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p632, !f646

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM DHW SENSOR

Next: p634, !f635

OBSERVATION CH - OVERHEAT OCCUR

Next: p636, ?638, ?640

OBSERVATION DHW - OVERHEAT OCCUR

Next: p642, !f643

OBSERVATION PUMP OVERRUN

Next: p842, !f645

PRESSURE STANDING RETURN

ATTACH U GAUGE TO IN

Next: !p657, ?659, ?661

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p663, !f664

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p665, !f666

VOLTAGE FAN CONTROL

REMOVE 1 CONNECTOR F

Next: p671, !f708

RESISTANCE FAN CONTROL HARNESS

REMOVE FAN CONTROL CONNECTOR FROM FAN ASSEMBLY

Next: p673, !f707

RESISTANCE POWER CABLE FAN ASSEMBLY

REMOVE FAN POWER CONNECTOR TO FAN ASSEMBLY

Next: !p675, !f705

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p681, !f682

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p683, !f684

RESISTANCE PUMP AND HARNESS

REMOVE CONNECTOR 20 FROM THE PCB

Next: p691, !f1003

RESISTANCE GAS VALVE AND HARNESS (FUSE)

REMOVE CONNECTOR 35 FROM THE PCB

Next: !p710, f696

RESISTANCE IGNITION LEAD

DISCONNECT SPARK IGNITION LEAD FROM ELECTRODE AND PCB

Next: p679, !f727

INSPECTION PRESSURE SYSTEM

Next: p795, !f796

OBSERVATION DIVERTER VALVE OPERATION (DHW)

Next: !p784, f785

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM DHW SENSOR

Next: !p782, !f783

OBSERVATION COLD WATER SUPPLY

Next: p79, !f80

INSPECTION PRESSURE SYSTEM

Next: p772, !f773

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM DHW SENSOR

Next: p774, !f775

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p776, !f777

PUMP LIMPET TEST

Next: p778, !f779

INSPECTION PLATE HEAT EXCHANGER

ISOLATE COLD WATER S

Next: !p780, !f781

OBSERVATION DIVERTER VALVE PADDLE

REMOVE DIVERTER VALVE STEPPER MOTOR

Next: !p793, !f794

RESISTANCE STEPPER MOTOR AND HARNESS

REMOVE CONNECTOR X3 FROM THE PCB

Next: !p791, f863

INSPECTION DHW FLOW COMPONENTS

DRAIN THE DOMESTIC H

Next: !p1033, ?83, ?85, ?87

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM DHW SENSOR

Next: p797, !f798

RESISTANCE FLOW TEMPERATURE SENSOR

REMOVE CONNECTORS FROM FLOW SENSOR

Next: p799, !f800

PUMP LIMPET TEST

Next: p801, !f802

OBSERVATION DHW OUTPUT (MIXER TAP PASSING)

Next: p803, !f804

INSPECTION PLATE HEAT EXCHANGER

ISOLATE COLD WATER S

Next: p810, !f806

BOILER OUTPUT

SET BOILER TO 100% OUTPUT

Next: !p811, ?812, ?814

SERVICE MODE

Next: !p816, !f817

INSPECTION INTERNAL BY-PASS (OVERHEAT)

DRAIN PRIMARY SYSTEM WATER FROM BOILER
REMOVE INTERNAL BY-PASS

Next: !p843, !f844

INSPECTION AIR INTAKE AND VENTURI

REMOVE AIR INTAKE MA

Next: p1034, ?859, ?861

DISCONNECT CONNECTOR X20

REMOVE CONNECTOR X20 FROM PCB AND MAKE SAFE

Next: !p896, !f871

OBSERVATION PUMP RUNS

Next: p608, f889

OBSERVATION FAN RUNS (NO DISPLAY)

REMOVE 1 CONNECTOR FROM OVERHEAT STAT AND MAKE SAFE

Next: p56, f11

FAULT CODES

Next: p951, !f904

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p907, !f109

RESISTANCE IGNITION LEAD

DISCONNECT SPARK IGNITION LEAD FROM ELECTRODE AND PCB

Next: p915, !f916

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p917, !f918

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS / ELECTRODE

REMOVE BURNER MODULE UNIT ASSEMBLY FROM BOILER

Next: !p919, ?921, ?923, ?925

INSPECTION FLUE

Next: p929, !f930

INSPECTION AIR INTAKE AND VENTURI (OUTPUT)

REMOVE AIR INTAKE MA

Next: p942, ?933, ?935

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

REMOVE BURNER MODULE UNIT ASSEMBLY FROM BOILER

Next: !p949, ?938, ?940

INSPECTION FAN - INTERNAL

WITH AIR INTAKE MANIFOLD AND FAN VENTURI REMOVED FROM PREVIOUS TEST

Next: p931, !f950

RESISTANCE HARNESS FLOW SENSOR

REMOVE CONNECTOR FROM FLOW SENSOR

Next: !p97, !f1000

FAULT CODES 2

Next: !p952, !f953

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p967, !f968

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p965, !f966

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p972, !f973

RESET APPLIANCE - FAULT CODE 0A

ENSURE NO DEMANDS ARE PRESENT

Next: !p992, f988

System Information

  • Total Tests: 600
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control