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:

GLOWWORM ULTRACOM 2 CXI

GLOBALLY REPLACED

Next: &1, *

FUSE FURTHER INVESTIGATION

NOT USED

Next: nff

CASE REMOVAL

Next: &1599, !f2

TYPE OF DIAGNOSTIC PROCEDURE

Next: &43, !f4

POWER UP SELF TEST

ENSURE NO DEMANDS ARE PRESENT

Next: &715, ?10, ?1865

OBSERVATION PUMP RUNS

Next: &31, f2366

OBSERVATION BURNER IGNITION & ESTABLISH

Next: &1725, ?110, ?112, ?114, ?1635

DHW FLOW RATE

Next: &87, f44

OBSERVATION FAN RUNS - DHW DEMAND

TURN HOT TAP ON AND SET FLOW RATE TO 3.0 L/MIN
ENSURE BOILER IS COOL

Next: &29, ?88, ?90

CH OPERATION

Next: &nff, ?560, ?562, ?564

COMBUSTION CHECK

CONNECT FGA TO THE COMBUSTION TEST POINT ON THE BOILER
ENSURE CH SYSTEM IS COOL

Next: &333, f483

DHW OPERATION

Next: &334, ?336, ?338, ?340, ?342

TEST MODES

NOT USED

Next: &nff, f555

INSTALLATION SETTINGS

NOT USED

Next: &nff, f596

INITIAL SETUP

Next: &3, !f716

FAULT CODE F00/F10

NOT USED

Next: &nff, f735

FAULT CODE F23 - F24

NOT USED

Next: &nff, f1060

FAULT CODE F20

NOT USED

Next: &nff, f1199

FAULT CODE F01/F11

NOT USED

Next: &nff, f747

FAULT CODE F84

NOT USED

Next: &nff, f839

FAULT CODE F83

NOT USED

Next: &nff, f782

FAULT CODE F76

NOT USED

Next: &nff, f1378

FAULT CODE F73 - F74

NOT USED

Next: &nff, f931

FAULT CODE F71

NOT USED

Next: &nff, f1192

FAULT CODE F70

NOT USED

Next: &nff, f1422

FAULT CODE F61 TO F67

NOT USED

Next: &nff, f1388

FAULT CODE F49

NOT USED

Next: &nff, f1361

FAULT CODE F32

NOT USED

Next: &nff, f1152

FAULT CODE F26/F77

NOT USED

Next: &nff, f1142

FAULT CODE ERR

NOT USED

Next: &nff, f1582

FAULT CODE F86

NOT USED

Next: &nff, f1172

FAULT CODE F22

NOT USED

Next: &nff, f948

FACTORY RESET

NOT USED

Next: &nff, f1160

FUSE FURTHER INVESTIGATION

NOT USED

Next: &nff, f2486

FAULT CODE HISTORY

NOT USED

Next: &nff, f1594

OBSERVATION DISPLAY

ON/OFF SWITCH ON (RECESSED POSITION, PUSHED IN)

Next: &7, ?1600, ?1631, ?1674, ?2110

STATUS CODES

NOT USED

Next: &nff, f1671

OBSERVATION BOILER RESPONDS TO CH DEMAND

Next: &335, f1824

LITE DIAGNOSTIC

DIAGNOSIS RELIES ON

Next: &nff, !f2316

QUICK ACCESS DATA AND INFORMATION

THE TABLE BELOW SHOW

Next: &nff, !f2318

HEADER FOR QADAI FLOW THERMISTOR

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2320

HEADER FOR QADAI RETURN THERMISTOR

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2324

HEADER FOR QADAI RESISTANCE GAS VALVE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2328

HEADER FOR QADAI VOLTAGE GAS VALVE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2333

HEADER FOR QADAI PRESSURE SENSOR

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2337

HEADER FOR QADAI FAN VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2342

HEADER FOR QADAI DIVERTER VALVE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2346

HEADER FOR QADAI PUMP VOLTAGE

INTENTIONALLY BLANK - HEADER FOR QADAI

Next: &nff, f2358

HEADER FOR QADAI RESISTANCE PUMP AND HARNESS

Next: &nff, f2362

HEADER FOR QADAI PUMP AND HARNESS ERP

INTENTIONALL LEFT BLANK FOR QADAI

Next: &nff, f2461

HEADER FOR QADAI PUMP VOLTAGE ERP

INTENTIONALL LEFT BLANK FOR QADAI

Next: &nff, f2465

HEADER FOR QADAI FLOW SENSOR RESISTANCE

Next: &nff, f2570

FAN DOES NOT RUN

SENSOR - TEMPERATURE

Next: End

FAN DOES NOT RUN 2

SENSOR - TEMPERATURE

Next: End

FAN DOES NOT RUN

PCB - MAIN

Next: End

FAULT CODE F23 - F24

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F23 - F24

MOTOR/PUMP

Next: End

FAN DOES NOT RUN

HARNESS DIN - MAIN

Next: End

FAULT CODE F23 - F24

SENSOR - TEMPERATURE

Next: End

FAULT CODE F23 - F24 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F23 - F24 4

SENSOR - TEMPERATURE

Next: End

FAULT CODE F23 - F24 3

SENSOR - TEMPERATURE

Next: End

FAULT CODE F23 - F24

Next: End

FAULT CODE F23 - F24

VALVE ISOLATION

Next: End

FAULT CODE F23 - F24

HEAT EXCHANGER - WATER WAYS

Next: End

FAULT CODE F23 - F24

FILTER - HEATING

Next: End

FAULT CODE F23 - F24 2

VALVE ISOLATION

Next: End

FAULT CODE F26

GAS VALVE

Next: End

FAULT CODE F26

PCB - MAIN

Next: End

FACTORY RESET

Z REDIRECTION

Next: End

FAULT CODE F86

WIRE LINK UNDER FLOOR HEATING

Next: End

FAULT CODE F86

UNDER FLOOR SENSOR

Next: End

FAULT CODE F86

PCB - MAIN

Next: End

FAULT CODE F86 2

PCB - MAIN

Next: End

FAULT CODE F71

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F71

SENSOR - TEMPERATURE

Next: End

FAULT CODE F71

PCB - MAIN

Next: End

FAULT CODE F20

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F20

VALVE ISOLATION

Next: End

SELF TEST

FROST PROTECTION NORMAL OPERATION

Next: End

FAULT CODE F20 4

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 3

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 5

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20 6

SENSOR - TEMPERATURE

Next: End

FAULT CODE F20

Next: End

FAULT CODE F20

FILTER - HEATING

Next: End

FAULT CODE F20

HEAT EXCHANGER - WATER WAYS

Next: End

FAULT CODE F20 4

MOTOR/PUMP

Next: End

FAULT CODE F20

PCB - MAIN - PUMP OVER-RUN

Next: End

FAULT CODE F32 3

PCB - MAIN

Next: End

FAULT CODE F32

PCB - MAIN

Next: End

FAULT CODE F32

HARNESS DIN - MAIN

Next: End

FAULT CODE F32 2

PCB - MAIN

Next: End

FAULT CODE F49

PCB - MAIN

Next: End

FAULT CODE F49 2

PCB - MAIN

Next: End

FAULT CODE F83

MOTOR/PUMP

Next: End

FAULT CODE F76

CABLE - SENSOR TO HARNESS - HEAT EXCHANGER

Next: End

FAULT CODE F76

PCB - MAIN

Next: End

FAULT CODE F70

PCB - MAIN

Next: End

FAULT CODE F70

MAIN DSN NUMBER

Next: End

SELF TEST

SENSOR - TEMPERATURE

Next: End

FAULT CODE ERR

CABLE - A1

Next: End

BURNER DOES NOT IGNITE

PCB - MAIN & GAS VALVE

Next: End

DHW FLOW RATE

FLOW RESTRICTOR

Next: End

FAULT CODE HISTORY

Z REDIRECTION

Next: End

NO DISPLAY

FUSE (FUSED SPUR)

Next: End

NO DISPLAY

SYSTEM PRESSURE SENSOR

Next: End

NO DISPLAY

FAN

Next: End

FAULT CODES

Z REDIRECTION

Next: End

STATUS CODES

Z REDIRECTION

Next: End

GAS RATIO ADJUSTMENT

GAS VALVE ADJUSTMENT

Next: End

CH DOES NOT RESPOND 1

PCB - MAIN

Next: End

CH DOES NOT RESPOND 2

PCB - MAIN

Next: End

CH DOES NOT RESPOND

PCB - MAIN

Next: End

CH DOES NOT RESPOND 4

PCB - MAIN

Next: End

CH DOES NOT RESPOND 3

PCB - MAIN

Next: End

BOILER FIRES SELF TEST

PCB - MAIN

Next: End

BOILER FIRES SELF TEST 2

PCB - MAIN

Next: End

SELF TEST 3

PCB - MAIN

Next: End

SELF TEST 2

PCB - MAIN

Next: End

LOW PRESSURE

SYSTEM PRESSURE

Next: End

SYSTEM PRESSURE

DEVICE - FILLING

Next: End

FAULT CODE F20

DEVICE - FILLING

Next: End

FAULT CODE F22

DEVICE - FILLING

Next: End

FAULT CODE F23

DEVICE - FILLING

Next: End

FAULT CODE F73-74

DEVICE - FILLING

Next: End

FAULT CODE F83

DEVICE - FILLING

Next: End

CASE OFF

DIRECTION CHOICE OR CONTINUE

Next: End

DHW COOL RADS COOL

DEVICE - FILLING

Next: End

DHW COOL RADS COOL

MOTOR/PUMP

Next: End

DHW COOL RADS COOL

AIR BOX

Next: End

DHW COOL RADS COOL

SENSOR - TEMPERATURE INSTALLATION

Next: End

DHW COOL RADS COOL

SENSOR - TEMPERATURE

Next: End

DHW COOL RADS COOL 2

SENSOR - TEMPERATURE

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER - WATER WAYS

Next: End

DHW COOL RADS COOL

FILTER - HEATING

Next: End

DHW COOL RADS COOL

MAIN DSN NUMBER

Next: End

DHW TOO HOT

SENSOR - TEMPERATURE INSTALLATION

Next: End

DHW TOO HOT

SENSOR - TEMPERATURE

Next: End

DHW TOO HOT 2

SENSOR - TEMPERATURE

Next: End

DHW RUNS HOT THEN COLD

MOTOR/PUMP

Next: End

DHW RUNS HOT COOL

SENSOR - TEMPERATURE INSTALLATION

Next: End

DHW RUNS HOT THEN COLD

HEAT EXCHANGER - WATER WAYS

Next: End

DHW RUNS HOT THEN COLD

FILTER - HEATING

Next: End

DHW RUNS HOT THEN COLD

SENSOR - TEMPERATURE

Next: End

DHW RUNS HOT THEN COLD 2

SENSOR - TEMPERATURE

Next: End

DHW RUNS HOT THEN COOL

DEVICE - FILLING

Next: End

NO DISPLAY

FUSE PCB

Next: End

NO DISPLAY

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE 2

HARNESS DIN - MAIN

Next: End

FAN DOES NOT RUN

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAN DOES NOT RUN 4

SENSOR - TEMPERATURE

Next: End

FAN DOES NOT RUN 3

SENSOR - TEMPERATURE

Next: End

RESET OPTION

Z REDIRECTION

Next: End

BURNER DOES NOT IGNITE 3

HARNESS DIN - MAIN

Next: End

BURNER DOES NOT IGNITE 4

HARNESS DIN - MAIN

Next: End

BURNER DOES NOT ESTABLISH

PCB - MAIN

Next: End

BURNER DOES NOT ESTABLISH

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT ESTABLISH

HARNESS DIN - MAIN

Next: End

DOES NOT EST

SYPHON

Next: End

DHW COOL RADS COOL

GAS INLET PRESSURE

Next: End

FAULT CODE F83 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F83

SENSOR - TEMPERATURE

Next: End

FAULT CODE F83 4

SENSOR - TEMPERATURE

Next: End

FAULT CODE F83 3

SENSOR - TEMPERATURE

Next: End

FAULT CODE F61-67

GAS VALVE

Next: End

FAULT CODE F61 - 67

PCB - MAIN & GAS VALVE

Next: End

FAULT CODE F61 - 67

MAIN CONNECTIONS

Next: End

FAULT CODE F61 - 67

MAIN DSN NUMBER

Next: End

FAULT CODE F61 - 67

PCB - MAIN

Next: End

DHW NOT RECOGNISED

PCB - MAIN

Next: End

F84 - RUNNING SLOW

MOTOR/PUMP

Next: End

FAULT CODE F84 2

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE RADS ONLY GET WARM

FLUE

Next: End

BURNER DOES NOT IGNITE RADS ONLY GET WARM

BURNER

Next: End

BURNER DOES NOT IGNITE RADS ONLY GET WARM

HEAT EXCHANGER

Next: End

DHW COOL RADS COOL 2

MAIN DSN NUMBER

Next: End

BURNER DOES NOT IGNITE RADS ONLY GET WARM UNABLE TO GAS RATE

FLUE

Next: End

BURNER DOES NOT IGNITE RADS ONLY GET WARM UNABLE TO GAS RATE

BURNER

Next: End

BURNER DOES NOT IGNITE RADS ONLY GET WARM UNABLE TO GAS RATE

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE 2

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BURNER DOES NOT IGNITE

BURNER

Next: End

BURNER DOES NOT IGNITE

HEAT EXCHANGER

Next: End

F70 HAD TO SAVE INCORRECT DS NUMBER FIRST

MAIN DSN NUMBER

Next: End

FAULT CODE F32 3

HARNESS DIN - MAIN

Next: End

FAULT CODE F32 3

FAN

Next: End

FAULT CODE F32 2

HARNESS DIN - MAIN

Next: End

FAULT CODE F32 2

FAN

Next: End

BLANK FOR LITE DIAGNOSTIC

Z REDIRECTION

Next: End

BLANK FOR QADAI

Z REDIRECTION

Next: End

QADAI RETURN

SENSOR - TEMPERATURE

Next: End

QADAI FLOW

SENSOR - TEMPERATURE

Next: End

QADAI VOLTAGE TO DIVERTER VALVE

PCB - MAIN

Next: End

QADAI

GAS VALVE

Next: End

QADAI VOLTAGE TO GAS VALVE

PCB - MAIN

Next: End

QADAI

PCB - MAIN

Next: End

QADAI

MOTOR/PUMP

Next: End

FAN QADAI

PCB - MAIN

Next: End

PUMP DOES NOT RUN

MOTOR/PUMP

Next: End

PUMP DOES NOT RUN

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE

GAS INLET PRESSURE

Next: End

PUMP DOES NOT RUN 1

PCB - MAIN

Next: End

PUMP DOES NOT RUN 3

MOTOR/PUMP

Next: End

PUMP DOES NOT RUN 2

PCB - MAIN

Next: End

PUMP DOES NOT RUN 5

MOTOR/PUMP

Next: End

PUMP DOES NOT RUN 7

MOTOR/PUMP

Next: End

PUMP DOES NOT RUN 3

PCB - MAIN

Next: End

PUMP DOES NOT RUN 4

PCB - MAIN

Next: End

PUMP DOES NOT RUN 8

MOTOR/PUMP

Next: End

QADAI RESISTANCE

MOTOR/PUMP ERP

Next: End

NO VOLTAGE TO ERP PUMP

PCB - MAIN

Next: End

PUMP NOT RUNNING ERP

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE 2

GAS VALVE

Next: End

ERP FUSE FURTHER INVESTIGATION

MOTOR/PUMP ERP

Next: End

FUSE FURTHER INVESTIGATION

MOTOR/PUMP

Next: End

ERP PUMP NOT RUNNING

PUMP CABLE (ERP)

Next: End

ERP FAULT CODE F83

PUMP CABLE (ERP)

Next: End

PUMP NOT RUNNING ERP F83

PCB - MAIN

Next: End

ERP FAULT CODE F84

PUMP CABLE (ERP)

Next: End

PUMP NOT RUNNING ERP F84

PCB - MAIN

Next: End

ERP FAULT CODE F23 F24

PUMP CABLE (ERP)

Next: End

PUMP NOT RUNNING ERP F23 F24

PCB - MAIN

Next: End

ERP FAULT CODE F20

PUMP CABLE (ERP)

Next: End

PUMP NOT RUNNING ERP F20

PCB - MAIN

Next: End

QADAI

SYSTEM PRESSURE SENSOR

Next: End

QADAI

SENSOR - FLOW

Next: End

SELF TEST 2

SENSOR - TEMPERATURE

Next: End

BURNER DOES NOT IGNITE

SYPHON

Next: End

BURNER NOISY/ BAFFLES OUT

SYPHON

Next: End

BURNER NOISY/ BAFFLES OUT

GAS INLET PRESSURE

Next: End

BURNER NOISY/ BAFFLES OUT

AIR BOX

Next: End

BURNER NOISY/ BAFFLES OUT

FLUE

Next: End

BURNER NOISY/ BAFFLES OUT

BURNER

Next: End

BURNER NOISY/ BAFFLES OUT

HEAT EXCHANGER

Next: End

BURNER DOES NOT IGNITE

AIR BOX

Next: End

DHW COOL RADS HEAT

PCB - MAIN

Next: End

DHW COOL RADS HEAT 2

PCB - MAIN

Next: End

DHW COOL RADS HEAT

HARNESS DIN - MAIN

Next: End

TYPE DIAG PROCEDURE

DIRECTION CHOICE OR CONTINUE

Next: End

DHW FLOW RATE

VALVE ISOLATION DHW

Next: End

FLOW RATE

COLD WATER SUPPLY

Next: End

COMBUSTION CHECK

GAS INLET PRESSURE

Next: End

AIR/GAS RATIO INCORRECT

FLUE

Next: End

AIR/GAS RATIO INCORRECT

COMBUSTION SEALS

Next: End

AIR/GAS RATIO INCORRECT

AIR BOX

Next: End

AIR/GAS RATIO INCORRECT

SYPHON

Next: End

AIR/GAS RATIO INCORRECT

BURNER

Next: End

AIR/GAS RATIO INCORRECT

HEAT EXCHANGER

Next: End

TEST MODE

DIRECTION CHOICE OR CONTINUE

Next: End

RADS DO NOT HEAT

VALVE ISOLATION

Next: End

RADS DO NOT HEAT

MOTOR/PUMP

Next: End

RADS DO NOT HEAT

PCB - MAIN

Next: End

RADS DO NOT HEAT

HARNESS DIN - MAIN

Next: End

RADS DO NOT HEAT 2

PCB - MAIN

Next: End

SYSTEM PRESSURE RISES

EXPANSION VESSEL

Next: End

RAD TEMP LOW

SENSOR - TEMPERATURE

Next: End

RAD TEMP LOW 2

PCB - MAIN

Next: End

CH RAD TEMP LOW

ADJUSTMENT PARAMETER SETTING

Next: End

RADS DO NOT HEAT

BYPASS

Next: End

INSTALLATION SETTINGS

DIRECTION CHOICE OR CONTINUE

Next: End

RAD TEMP LOW 2

SENSOR - TEMPERATURE

Next: End

INITIAL SET UP

DIRECTION CHOICE OR CONTINUE

Next: End

FAULT CODE F00/F10

PCB - MAIN

Next: End

FAULT CODE F00/F10

SENSOR - TEMPERATURE

Next: End

FAULT CODE F01/F11

SENSOR - TEMPERATURE

Next: End

FAULT CODE F01/F11

PCB - MAIN

Next: End

FAULT CODE F83

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F83

HEAT EXCHANGER - WATER WAYS

Next: End

FAULT CODE F83

FILTER - HEATING

Next: End

FAULT CODE F84

SENSOR - TEMPERATURE INSTALLATION

Next: End

FAULT CODE F84

SENSOR - TEMPERATURE

Next: End

FAULT CODE F84 2

SENSOR - TEMPERATURE

Next: End

FAULT CODE F84

PCB - MAIN

Next: End

FAULT CODE F73 - F74

PCB - MAIN

Next: End

FAULT CODE F73 - F74

HARNESS DIN - MAIN

Next: End

FAULT CODE F73 - F74 2

PCB - MAIN

Next: End

FAULT CODE F22

PCB - MAIN

Next: End

FAULT CODE F22 2

PCB - MAIN

Next: End

DHW NOT RECOGNISED

HARNESS DIN - MAIN

Next: End

FAN DOES NOT RUN 2

PCB - MAIN

Next: End

BOILER RESET

FAULT CODE F22

Next: End

FAN DOES NOT RUN

FAN

Next: End

FAULT CODE F23 - F24 2

PCB - MAIN

Next: End

FAULT CODE F23 - F24

FAULT CODE RESET

Next: End

FAULT CODE F23 - F24

HEAT EXCHANGER - PLATE TO PLATE

Next: End

FAULT CODE F26

HARNESS DIN - MAIN

Next: End

FAULT CODE F26

FAULT CODE RESET

Next: End

FACTORY RESET

DIRECTION CHOICE OR CONTINUE

Next: End

FAULT CODE F86

FAULT CODE RESET

Next: End

FAULT CODE F86 2

FAULT CODE RESET

Next: End

FAULT CODE F71

FAULT CODE RESET

Next: End

FAULT CODE F20

PCB - MAIN

Next: End

FAULT CODE F20

FAULT CODE RESET

Next: End

FAULT CODE F20 2

PCB - MAIN

Next: End

FAULT CODE F20 3

PCB - MAIN

Next: End

FAULT CODE F20

HEAT EXCHANGER - PLATE TO PLATE

Next: End

FAULT CODE F32

FAN

Next: End

FAULT CODE F32

FAULT CODE RESET

Next: End

FAULT CODE RESET - F49

FAULT CODE RESET - F49

Next: End

FAULT CODE F49

EBUS CONTROLS

Next: End

FAULT CODE F76

FAULT CODE RESET

Next: End

HEAT EXCHANGER - THERMAL FUSE

HEAT EXCHANGER - THERMAL FUSE

Next: End

FAULT CODE F70

FAULT CODE RESET

Next: End

FAULT CODE F70

FACTORY RESET

Next: End

FAULT CODE F70

DIRECTION CHOICE OR CONTINUE

Next: End

FAULT CODE ERR

FAULT CODE RESET

Next: End

FAULT CODE ERR

FACTORY RESET

Next: End

FAULT CODE ERR

PCB - INTERFACE

Next: End

DHW FLOW RATE

HEAT EXCHANGER - PLATE TO PLATE

Next: End

FAULT CODE HISTORY

DIRECTION CHOICE OR CONTINUE

Next: End

NO DISPLAY

Next: End

FUSE FURTHER INVESTIGATION

Z REDIRECTION

Next: End

FAULT CODES

DIRECTION CHOICE OR CONTINUE

Next: End

BURNER DOES NOT IGNITE

PCB - MAIN - HARNESS DIN - MAIN

Next: End

STATUS CODES

DIRECTION CHOICE OR CONTINUE

Next: End

CH DOES NOT RESPOND 4

Next: End

CH DOES NOT RESPOND 6

INTERNAL PROGRAMMER

Next: End

CH DOES NOT RESPOND

EBUS CONTROLS

Next: End

CH DOES NOT RESPOND 3

Next: End

CH DOES NOT RESPOND 8

INTERNAL PROGRAMMER

Next: End

BOILER FIRES SELF TEST

Next: End

BOILER FIRES SELF TEST 2

INTERNAL PROGRAMMER

Next: End

BOILER FIRES SELF TEST 2

Next: End

SELF TEST

EBUS CONTROLS

Next: End

SELF TEST 2

EBUS CONTROLS

Next: End

LOW SYSTEM PRESSURE

Z REDIRECTION

Next: End

LOW SYSTEM PRESSURE 2

SYSTEM PRESSURE SENSOR

Next: End

LOW SYSTEM PRESSURE

SYSTEM PRESSURE SENSOR

Next: End

LOW SYSTEM PRESSURE

INLET BLOCK ASSEMBLY

Next: End

FAULT CODE F20

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F20 2

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F20

INLET BLOCK ASSEMBLY

Next: End

FAULT CODE F22

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F22 2

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F22

INLET BLOCK ASSEMBLY

Next: End

FAULT CODE F23 - F24

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F23 - F24 2

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F23 - F24

INLET BLOCK ASSEMBLY

Next: End

FAULT CODE F73 - F74 2

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F73 - F74 3

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F73 - F74

INLET BLOCK ASSEMBLY

Next: End

FAULT CODE F83

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F83 2

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F83

INLET BLOCK ASSEMBLY

Next: End

DHW COOL RADS COOL 2

SYSTEM PRESSURE SENSOR

Next: End

DHW COOL RADS COOL

SYSTEM PRESSURE SENSOR

Next: End

DHW COOL RADS COOL

INLET BLOCK ASSEMBLY

Next: End

DHW COOL RADS COOL

HEAT EXCHANGER - PLATE TO PLATE

Next: End

DHW COOL RADS COOL

PCB - MAIN

Next: End

DHW COOL RADS COOL

DIRECTION CHOICE OR CONTINUE

Next: End

DHW TOO HOT

PCB - MAIN

Next: End

DHW RUNS HOT THEN COLD

HEAT EXCHANGER - PLATE TO PLATE

Next: End

DHW RUNS HOT THEN COLD

PCB - MAIN

Next: End

DHW RUNS HOT THEN COOL

SYSTEM PRESSURE SENSOR

Next: End

DHW RUNS HOT THEN COOL 2

SYSTEM PRESSURE SENSOR

Next: End

DHW RUNS HOT THEN COOL

INLET BLOCK ASSEMBLY

Next: End

NO DISPLAY

DIRECTION CHOICE OR CONTINUE

Next: End

NO DISPLAY 2

PCB - INTERFACE

Next: End

BURNER DOES NOT IGNITE 2

FAN

Next: End

DHW NOT RECOGNISED 2

PCB - MAIN

Next: End

RESET OPTIONS

DIRECTION CHOICE OR CONTINUE

Next: End

BURNER DOES NOT IGNITE

SPARK GENERATOR

Next: End

BURNER DOES NOT IGNITE 2

PCB - MAIN

Next: End

BURNER DOES NOT ESTABLISH 2

PCB - MAIN

Next: End

BURNER DOES NOT ESTABLISH

SPARK GENERATOR

Next: End

FAULT CODE F83

PCB - MAIN

Next: End

FAULT CODE F61 - 67

FAULT CODE RESET

Next: End

FAULT CODE F61 - 67

PCB - MAIN - HARNESS DIN - MAIN

Next: End

FAULT CODE F61 TO F67

DIRECTION CHOICE OR CONTINUE

Next: End

FAULT CODE F61 - 67

FACTORY RESET

Next: End

INTERNALLY SHORTED

SENSOR - FLOW

Next: End

FAULT CODE F84

FAULT CODE RESET

Next: End

DHW COOL RADS COOL - GAS RATE LOW

PCB - MAIN

Next: End

DHW COOL RADS COOL 2

DIRECTION CHOICE OR CONTINUE

Next: End

DHW COOL RADS COOL - GAS RATE LOW UNABLE TO GAS RATE

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

FAULT CODE F32 5

PCB - MAIN

Next: End

FAULT CODE F32 4

PCB - MAIN

Next: End

FLOW THERMISTOR

RESULT AS EXPECTED

Next: End

RETURN THERMISTOR

RESULT AS EXPECTED

Next: End

GAS VALVE

RESULT AS EXPECTED

Next: End

DIVERTER VALVE

RESULT AS EXPECTED

Next: End

GAS VALVE VOLTAGE

RESULT AS EXPECTED

Next: End

PRESSURE SENSOR

RESULT AS EXPECTED

Next: End

FAN

RESULT AS EXPECTED

Next: End

PUMP VOLTAGE

RESULT AS EXPECTED

Next: End

MOTOR/PUMP

RESULT AS EXPECTED

Next: End

PUMP DOES NOT RUN 2

MOTOR/PUMP

Next: End

BURNER DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

PUMP DOES NOT RUN 1

MOTOR/PUMP

Next: End

PUMP DOES NOT RUN 4

MOTOR/PUMP

Next: End

PUMP DOES NOT RUN 6

MOTOR/PUMP

Next: End

PUMP DOES NOT RUN 9

MOTOR/PUMP

Next: End

BURNER DOES NOT IGNITE

PCB - MAIN

Next: End

ERP PUMP

RESULT AS EXPECTED

Next: End

PUMP VOLTAGE ERP

RESULT AS EXPECTED

Next: End

BURNER DOES NOT IGNITE

HARNESS DIN - MAIN

Next: End

ERP 1

MOTOR/PUMP ERP

Next: End

NO DISPLAY ERP

FUSE FURTHER INVESTIGATION

Next: End

NO DISPLAY

FUSE FURTHER INVESTIGATION

Next: End

ERP FAULT CODE F83

MOTOR/PUMP ERP

Next: End

ERP FAULT CODE F84

MOTOR/PUMP ERP

Next: End

ERP FAULT CODE F23 F24

MOTOR/PUMP ERP

Next: End

ERP FAULT CODE F20

MOTOR/PUMP ERP

Next: End

FLOW SENSOR

RESULT AS EXPECTED

Next: End

BURNER NOISY/ BAFFLES OUT

GAS VALVE

Next: End

SELF TEST

PCB - MAIN

Next: End

DHW COOL RADS HEAT

VALVE - ASSEMBLED

Next: End

DHW COOL RADS HEAT

THREE WAY VALVE - MOTOR

Next: End

DHW COOL RADS HEAT 2

THREE WAY VALVE - MOTOR

Next: End

COMBUSTION CHECK

Z REDIRECTION

Next: End

DHW FLOW RATE

SENSOR - FLOW

Next: End

DHW FLOW RATE

FILTER STEEL - FLOW SENSOR

Next: End

AIR/GAS RATIO INCORRECT

GAS VALVE

Next: End

TEST MODE

Z REDIRECTION

Next: End

RADS DO NOT HEAT

THREE WAY VALVE - MOTOR

Next: End

RADS DO NOT HEAT 2

THREE WAY VALVE - MOTOR

Next: End

SYSTEM PRESSURE RISES

PIPE EXPANSION VESSEL

Next: End

RAD TEMP LOW

Z REDIRECTION

Next: End

RADS DO NOT HEAT

Next: End

INSTALLATION SETTINGS

Z REDIRECTION

Next: End

RAD TEMP LOW

PCB - MAIN

Next: End

FAULT CODE F00/F10

FAULT CODE RESET

Next: End

FAULT CODE F00/F10

HARNESS DIN - MAIN

Next: End

FAULT CODE F01/F11

HARNESS DIN - MAIN

Next: End

FAULT CODE F01/F11

FAULT CODE RESET

Next: End

FAULT CODE F83

HEAT EXCHANGER - PLATE TO PLATE

Next: End

FAULT CODE F83

FAULT CODE RESET

Next: End

FAULT CODE F73 - F74

SYSTEM PRESSURE SENSOR

Next: End

FAULT CODE F73 - F74

FAULT CODE RESET

Next: End

DHW NOT RECOGNISED

SENSOR - FLOW

Next: End

CH SYMBOL FLASHING AND CH FLOW TEMPERATURE BELOW 12 °C (FIG 2)

CHARACTERISTIC TEST FROM POWER UP SELF TEST

Next: p11

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p234

BURNER IGNITES SMOOTHLY BUT DOES NOT ESTABLISH - SPARKING CONTINUES

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p2126

BURNER IGNITES BUT IS NOISY AND/OR BAFFLES OUT

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p279

BOILER GOES TO FAULT CODE F20 - TEMPERATURE BELOW 97°C

CHARACTERISTIC TEST FROM RUN BOILER TO MAX TEMP - FAULT CODE F20

Next: p1302

BOILER FLOW TEMPERATURE EXCEEDS 85°C AND BOILER STILL FIRED

CHARACTERISTIC TEST FROM RUN BOILER TO MAX TEMP - FAULT CODE F20

Next: p1304

FAN DOES NOT RUN

CHARACTERISTIC TEST FROM ? OBSERVATION FAN RUNS - FAULT CODE F32

Next: p1344

FAN RUNS AND/OR STOPS AND RESTARTS - FAULT CODE F32 OCCURS

CHARACTERISTIC TEST FROM ? OBSERVATION FAN RUNS - FAULT CODE F32

Next: p2310

DISPLAY NOT ILLUMINATED (BLANK)

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p1601

FAULT CODE DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p1632

FAULT CODE F32 DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p2305

LOW SYSTEM PRESSURE DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p1941

24 VOLT EXTERNAL CONTROLS FITTED

CHARACTERISTIC TEST FROM OBSERVATION EXTERNAL CONTROLS FITTED

Next: p1846

EBUS CONTROLS FITTED

CHARACTERISTIC TEST FROM OBSERVATION EXTERNAL CONTROLS FITTED

Next: p1854

CH SYMBOL FLASHING AND CH FLOW TEMP ABOVE 12°C (FIG 3)

CHARACTERISTIC TEST FROM POWER UP SELF TEST

Next: p1867

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1956

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1958

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1963

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1965

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1971

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1973

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1979

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1981

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1987

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1989

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1995

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p1997

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2006

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2008

SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2062

MANIFOLD RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

Next: !p2064

RESET DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION DISPLAY

Next: p2111

UNABLE TO GAS RATE (EG LPG INSTALLATION)

Next: p2271

GAS RATE INCORRECT

Next: p2274

TEMPERATURE RISE UNSATISFACTORY, RADIATORS HEAT WITH NO CH DEMAND

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p346

TEMPERATURE RISE UNSATISFACTORY, RADIATORS REMAIN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1999

DHW TOO HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p2033

DHW RUNS HOT THEN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p2040

FLOW SENSOR RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR FLOW - DHW

Next: !p52

FILTER RESTRICTED AND/OR BLOCKED

CHARACTERISTIC TEST FROM INSPECTION SENSOR FLOW - DHW

Next: !p54

BOILER REACHES TEMPERATURE RADIATORS DO NOT HEAT

CHARACTERISTIC TEST FROM CH OPERATION

Next: p561

EXCESSIVE SYSTEM PRESSURE AS CH TEMPERATURE RISES

CHARACTERISTIC TEST FROM CH OPERATION

Next: p563

BOILER AND RADIATOR TEMPERATURE LOW

CHARACTERISTIC TEST FROM CH OPERATION

Next: p565

FAN DOES NOT RUN - DHW DEMAND RECOGNISED (TAP SYMBOL FLASHING)

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS - DHW DEMAND

Next: p99

FAN DOES NOT RUN - DHW DEMAND NOT RECOGNISED (TAP SYMBOL NOT FLASHING)

CHARACTERISTIC TEST FROM OBSERVATION FAN RUNS - DHW DEMAND

Next: p92

15/08/2023 09:38:55 2301_5_50_2 29/11/2023 12:57:27

15/08/2023 09:42:56

Next: End

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p102, !f103

RESET APPLIANCE - FAULT CODE F20 TO F24

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p1061, f1089

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1090, !f1091

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p1136, !f1141

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p1147, f1144

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p1148, !f1149

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: p1153, !f1339

FACTORY RESET PROCEDURE

FACTORY RESET PRO

Next: !p1161, !f1162

OBSERVATION UNDERFLOOR HEATING

Next: p1175, f1180

RESISTANCE SENSOR UNDER FLOOR

{GAINPCBACS}
REMOVE UNDER FLOOR HEATING SENSOR CONNECTOR FROM X18 ON THE PCB

Next: p1185, !f1186

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p1193, !f1194

RESET APPLIANCE - FAULT CODE F20 TO F24

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p1206, f1201

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1202, !f1203

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p1314, !f1321

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1362, f1363

OBSERVATION ARE ANY EBUS CONTROLS FITTED

{GAINPCBACS}

Next: p1364, !f1365

RESISTANCE THERMAL FUSE AND HARNESS

REMOVE CONNECTOR X20 FROM THE PCB

Next: p1384, f1380

RESISTANCE HARNESS THERMAL FUSE

REMOVE CONNECTOR X20 FROM THE PCB
REMOVE CONNECTOR TO THERMAL FUSE

Next: !p1387, !f1382

RESET APPLIANCE - FAULT CODE F61 - F67

ENSURE NO DEMANDS ARE PRESENT

Next: p2231, f2235

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1423, f1424

OBSERVATION DSN NUMBER

PARAMETER DSN NUM

Next: p2300, f1426

DSN NUMBER ALTERED CORRECTLY

THE DSN PARAMETER IS

Next: !p1429, !f1430

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1583, f1584

FACTORY RESET - PCB MAIN

FACTORY RESET PRO

Next: !p1585, f1586

RESISTANCE HARNESS INTERFACE

REMOVE CONNECTOR X51 FROM THE PCB
REMOVE PCB TO INTERFACE PCB CONNECTOR

Next: !p1587, !f1588

FAULT CODE HISTORY ACCESS

Next: !p1595, !f1596

RESISTANCE FUSE (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: !p1604, f1605

FUSE FURTHER INVESTIGATION (FUSED SPUR)

THE INFORMATION PROV

Next: !p1606, !f1607

ACTIVATE STATUS CODES

STATUS CODES OF T

Next: !p1672, !f1673

OBSERVATION EXTERNAL CONTROLS FITTED

{GAINPCBACS}

Next: p1858, ?1845, ?1853

OBSERVATION INTERNAL PROGRAMMER FITTED

Next: p1849, !f1850

OBSERVATION INTERNAL PROGRAMMER FITTED

Next: p1861, !f1862

OBSERVATION EXTERNAL CONTROLS FITTED - SELF TEST

{GAINPCBACS}

Next: p1881, f1885

DISCONNECT INTERNAL PROGRAMMER (SELF TEST)

GAIN ACCESS TO UPPER

Next: !p1879, !f1880

DISCONNECT EBUS CONTROLS - SELF TEST

REMOVE EBUS WIRING C

Next: !p1886, !f1887

DISCONNECT EBUS CONTROLS - SELF TEST

REMOVE EBUS WIRING C

Next: !p1888, !f1889

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p1953, !f1952

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p1960, !f1966

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p1976, !f1982

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p1984, !f1990

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p1992, !f1998

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p2001, !f2002

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p2022, !f2023

DSN NUMBER ALTERED CORRECTLY

THE DSN PARAMETER IS

Next: !p2028, !f2029

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p2048, !f2049

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p2057, !f2058

FUSE FURTHER INVESTIGATION

THE INFORMATION PROV

Next: !p2092, !f2093

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: p2122, f2100

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p2101, !f2102

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p2115, !f2116

INSPECTION ELECTRODE IGNITION

REMOVE IGNITION ELECTRODE

Next: p2132, !f2133

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2198, !f2199

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p2236, f2237

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p2238, !f2239

DSN NUMBER ALTERED CORRECTLY

THE DSN PARAMETER IS

Next: !p2244, !f2245

VOLTAGE FLOW SENSOR - SEND (FLOW SENSOR DISCONNECTED)

REMOVE THE CONNECTOR FROM THE DHW FLOW SENSOR AND MAKE SAFE

Next: !p2249, !f2250

DSN NUMBER ALTERED CORRECTLY

THE DSN PARAMETER IS

Next: !p2282, !f2283

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: !p2321, !f2340

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2325, !f2326

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p2331, !f2349

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE AND MAKE SAFE

Next: !p2351, !f2350

VOLTAGE SENSOR SYSTEM PRESSURE - RETURN

{GAINPCBACS}

Next: !p2352, !f2568

VOLTAGE FAN 22 VDC AT PCB

REMOVE ELECTRICAL CONNECTOR FROM FAN ASSEMBLY, LEAVE IN A SAFE LOCATION

Next: !p2355, !f2365

VOLTAGE DIVERTER VALVE AT PCB - DIVERTER DISCONNECTED

REMOVE ELECTRICAL CONNECTOR TO DIVERTER VALVE AND MAKE SAFE
ENSURE NO DEMANDS ARE PRESENT

Next: !p2347, !f2348

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2359, !f2360

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: !p2363, !f2364

OBSERVATION TYPE OF PUMP

Next: p2367, f2369

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: p2370, !f2371

VOLTAGE SPARK GENERATOR AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND MAKE SAFE

Next: p238, f2098

OBSERVATION TYPE OF PUMP

Next: p2563, f2380

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: p2381, !f2435

OBSERVATION TYPE OF PUMP

Next: p2558, f2391

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: p2392, !f2448

OBSERVATION TYPE OF PUMP

Next: p2548, f2405

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: p2406, !f2444

OBSERVATION TYPE OF PUMP

Next: p2553, f2418

RESISTANCE PUMP AND HARNESS

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: p2419, !f2445

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: !p246, f247

RESISTANCE PUMP AND HARNESS ERP

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: !p2462, !f2463

VOLTAGE PUMP AT PCB ERP

{GAINPCBACS}

Next: !p2466, !f2467

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p1669, !f1589

OBSERVATION TYPE OF PUMP

Next: p2540, f2543

RESISTANCE GAS VALVE

REMOVE LEFT - HAND SIDE BOILER CASE
REMOVE ELECTRICAL CONNECTOR TO THE GAS VALVE

Next: !p252, !f253

RESISTANCE PUMP AND HARNESS (FUSE FURTHER INVESTIGATION)

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: !p2544, !f2545

VOLTAGE FLOW SENSOR DHW - RETURN

{GAINPCBACS}
ENSURE A FLOW RATE OF 3 LITRES PER MINUTE

Next: !p2571, !f2572

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}
ENSURE NO DEMANDS ARE PRESENT

Next: p369, f383

VOLTAGE DIVERTER VALVE AT PCB - DIVERTER DISCONNECTED

REMOVE ELECTRICAL CONNECTOR TO DIVERTER VALVE AND MAKE SAFE
ENSURE NO DEMANDS ARE PRESENT

Next: p384, !f385

OBSERVATION DHW ISOLATION VALVE

Next: p45, !f46

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p504, !f485

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER
REMOVE LEFT-HAND SIDE CASE IF REQUIRED

Next: p549, !f550

TEST MODE ACTIVATION

Next: !p556, !f557

VOLTAGE DIVERTER VALVE AT PCB

{GAINPCBACS}
ENSURE NO DEMANDS ARE PRESENT

Next: p573, f574

VOLTAGE DIVERTER VALVE AT PCB - DIVERTER DISCONNECTED

REMOVE ELECTRICAL CONNECTOR TO DIVERTER VALVE AND MAKE SAFE
ENSURE NO DEMANDS ARE PRESENT

Next: p575, !f576

ADJUSTMENT - MAXIMUM HEATING PARAMETER SETTING

Next: p588, !f590

INSTALLATION SETTINGS ACTIVATION

Next: !p597, !f598

RESISTANCE THERMISTOR FLOW AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p736, f737

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: !p740, !f741

RESISTANCE THERMISTOR RETURN AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p748, f749

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p750, !f751

RESET APPLIANCE - FAULT CODE 83

ENSURE NO DEMANDS ARE PRESENT

Next: p785, f2197

INSPECTION FILTER HEATING

ISOLATED COLD WATER

Next: !p803, !f804

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p840, !f841

VOLTAGE SENSOR SYSTEM PRESSURE - RETURN

{GAINPCBACS}

Next: p932, f933

VOLTAGE SENSOR SYSTEM PRESSURE - SEND

Next: p934, !f935

VOLTAGE FLOW SENSOR - SEND

Next: p95, f2248

ADJUST PRIMARY SYSTEM PRESSURE - FAULT CODE F22

{GAINPCBACS}
LOCATE PRIMARY SYSTEM FILLING LOOP

Next: p949, f950

VOLTAGE SENSOR SYSTEM PRESSURE - SEND

Next: p1967, !f954

VOLTAGE FAN 22 VDC AT PCB

REMOVE ELECTRICAL CONNECTOR FROM FAN ASSEMBLY, LEAVE IN A SAFE LOCATION

Next: p106, !f107

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p104, !f105

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p108, !f109

OBSERVATION SYSTEM PRESSURE

Next: p1062, f1975

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p1069, !f1070

OBSERVATION PUMP RUNS

Next: p1097, f2389

PUMP LIMPET TEST

Next: p1077, !f1078

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ENSURE DHW FLOW RATE

Next: p1130, f1135

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1092, !f1093

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1111, !f1125

TEMPERATURE FLOW - FROST PROTECTION

REMOVE LEFT HAND SID

Next: p12, !f13

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p1071, !f1126

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: !p1128, !f1129

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p1127, !f1134

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p1137, !f1138

INSPECTION FILTER HEATING

ISOLATED COLD WATER

Next: !p1139, !f1140

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1150, !f1151

OBSERVATION FAN RUNS - FAULT CODE F32

Next: !p1358, ?1340, ?1342

RESISTANCE LINK UNDER FLOOR HEATING CONNECTOR

{GAINPCBACS}
REMOVE UNDER FLOOR HEATING SENSOR CONNECTOR FROM X18 ON THE PCB

Next: p1183, !f1184

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1189, !f1190

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1191, !f1188

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1195, !f1196

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1197, !f1198

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p24, !f15

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1204, !f1205

OBSERVATION SYSTEM PRESSURE

Next: p1240, f1959

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p1214, !f1215

OBSERVATION PUMP RUNS

Next: p1286, f2378

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p1207, !f1268

PUMP LIMPET TEST

Next: p1287, !f1322

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ENSURE DHW FLOW RATE

Next: p1289, f1313

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - CH

ATTACH TEMPERATURE C

Next: p1323, !f1319

RUN BOILER TO MAX TEMP - FAULT CODE F20

REMOVE LEFT HAND SID

Next: !p1299, ?1301, ?1303

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1305, !f1306

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p1309, !f1310

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1307, !f1308

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p1311, !f1312

INSPECTION FILTER HEATING

ISOLATED COLD WATER

Next: !p1318, !f1320

OBSERVATION PUMP OVERRUN TIME

Next: p1297, !f1338

VOLTAGE FAN CONTROL PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM FAN ASSEMBLY, LEAVE IN A SAFE LOCATION

Next: p1345, !f1355

VOLTAGE FAN 22 VDC AT PCB

REMOVE ELECTRICAL CONNECTOR FROM FAN ASSEMBLY, LEAVE IN A SAFE LOCATION

Next: p1351, !f1352

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p1353, !f1354

DISCONNECT EBUS CONTROLS

REMOVE CONNECTOR X17 FROM THE PCB

Next: !p1366, !f1367

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1385, !f1386

FACTORY RESET - PCB MAIN

FACTORY RESET PRO

Next: !p1427, !f1428

INSPECTION RESTRICTOR FLOW (DHW)

ISOLATED COLD WATER

Next: !p1591, !f1592

VOLTAGE MAINS POWER INPUT AT PCB

{GAINPCBACS}

Next: p2065, f1603

DISCONNECT WATER PRESSURE SENSOR CONNECTOR

REMOVE WATER PRESSURE SENSOR CONNECTOR AND MAKE SAFE

Next: p1608, !f1609

DISCONNECT FAN CONNECTOR

REMOVE ELECTRICAL CONNECTOR TO FAN ASSEMBLY AND MAKE SAFE

Next: p1610, !f1611

VOLTAGE DISPLAY AT INTERFACE PCB

GAIN ACCESS TO INTERFACE PCB (USE INSULATION MAT AS REQUIRED)

Next: !p2096, !f2097

FAULT CODES

Next: !p1633, !f1634

BYPASS EXTERNAL CONTROLS - 24V

DISCONNECT 24V EXTER

Next: !p1847, f1848

DISCONNECT INTERNAL PROGRAMMER

GAIN ACCESS TO UPPER

Next: !p1851, !f1852

DISCONNECT EBUS CONTROLS - CH DEMAND

DISCONNECT EBUS WIRING CONNECTIONS TO CONNECTOR X17 AND MAKE SAFE

Next: !p1855, !f1856

BYPASS EXTERNAL CONTROLS - 240V

DISCONNECT 240V EXTE

Next: !p1859, f1860

DISCONNECT INTERNAL PROGRAMMER

GAIN ACCESS TO UPPER

Next: !p1863, !f1864

OBSERVATION INTERNAL PROGRAMMER FITTED

Next: p1868, f1869

OBSERVATION EXTERNAL CONTROLS FITTED - SELF TEST

{GAINPCBACS}

Next: p1876, f1884

DISCONNECT EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p1877, f1878

DISCONNECT EXTERNAL CONTROLS

REMOVE ALL EXTERNAL

Next: !p1882, !f1883

OBSERVATION SYSTEM PRESSURE - LOW PRESSURE

Next: p1942, f1951

SYSTEM PRESSURE SET CORRECTLY

THE SYSTEM PRESSURE

Next: !p1949, !f1950

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p1954, ?1955, ?1957

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p1961, ?1962, ?1964

INSPECTION FILLING LOOP

ISOLATE COLD FEED AS REQUIRED

Next: p1968, !f1974

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p1969, ?1970, ?1972

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p1977, ?1978, ?1980

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p1985, ?1986, ?1988

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p1993, ?1994, ?1996

OBSERVATION SYSTEM PRESSURE

Next: p2138, f2000

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p2003, ?2005, ?2007

PUMP LIMPET TEST

Next: p2010, !f2011

INSPECTION AIR BOX

REMOVE AIR BOX FROM GAS VALVE

Next: p2012, !f2013

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2014, !f2015

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2016, !f2017

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p2018, !f2019

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ENSURE DHW FLOW RATE

Next: p2262, f2021

OBSERVATION DSN NUMBER - DHW

PARAMETER DSN NUM

Next: !p2026, f2027

INSPECTION FILTER HEATING

ISOLATED COLD WATER

Next: !p2024, !f2025

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2034, !f2035

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2036, !f2037

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2038, !f2039

OBSERVATION SYSTEM PRESSURE

Next: p2041, f2056

PUMP LIMPET TEST

Next: p2042, !f2043

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2044, !f2045

TEMPERATURE DIFFERENTIAL FLOW AND RETURN - DHW

ENSURE DHW FLOW RATE

Next: p2046, f2047

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2052, !f2053

INSPECTION FILTER HEATING

ISOLATED COLD WATER

Next: !p2050, !f2051

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2054, !f2055

INSPECTION SENSOR SYSTEM PRESSURE AND MANIFOLD

DRAIN PRIMARY SYSTEM

Next: !p2059, ?2061, ?2063

RESISTANCE FUSE PCB

REMOVE FUSE FROM PCB

Next: p1602, f2091

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2104, !f2105

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2106, !f2107

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2108, !f2109

RESET OPTIONS

Next: !p2112, !f2113

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: !p2123, !f2124

INSPECTION CONDENSATE PIPE

Next: p2127, !f2137

VOLTAGE RECTIFICATION AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND MAKE SAFE
ENSURE NO DEMANDS

Next: p2128, !f2129

VOLTAGE RECTIFICATION - BURNER IGNITED

Next: !p2130, f2131

RESISTANCE HARNESS SPARK GENERATOR

REMOVE ELECTRICAL CONNECTOR TO SPARK GENERATOR AND CONNECTOR X21 FROM THE PCB

Next: !p2134, !f2135

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p2009, !f2162

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p2179, !f2195

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p788, !f2196

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p2200, !f2201

OBSERVATION GAS VALVE CLOSURE

Next: !p2232, !f2233

OBSERVATION PCB CONNECTIONS

Next: p2240, !f2241

OBSERVATION DSN NUMBER

PARAMETER DSN NUM

Next: p2242, f2243

FACTORY RESET - PCB MAIN

FACTORY RESET PRO

Next: !p2246, !f2247

OBSERVATION PUMP RUNS

Next: p2252, f2416

PUMP LIMPET TEST

Next: p2258, !f2259

DHW OPERATION - FAULT CODE

Next: !p2260, !f2261

GAS RATE

Next: p2020, ?2270, ?2272

OBSERVATION DSN NUMBER - DHW

PARAMETER DSN NUM

Next: p2284, f2281

INSPECTION FLUE ASSEMBLY

Next: p2275, !f2276

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER
REMOVE LEFT-HAND SIDE CASE IF REQUIRED

Next: p2277, !f2278

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p2279, !f2280

INSPECTION FLUE ASSEMBLY

Next: p2285, !f2286

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER
REMOVE LEFT-HAND SIDE CASE IF REQUIRED

Next: p2287, !f2288

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p2289, !f2290

INSPECTION ELECTRODE IGNITION

REMOVE IGNITION ELECTRODE

Next: p2292, !f2293

INSPECTION FLUE ASSEMBLY

Next: p2294, !f2295

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER
REMOVE LEFT-HAND SIDE CASE IF REQUIRED

Next: p2296, !f2297

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p2298, !f2299

OBSERVATION DS NUMBER RESET

SOMETIMES THE SOFTWA

Next: p1425, !f2304

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: p2306, !f2307

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: !p2308, !f2309

RESISTANCE HARNESS FAN

REMOVE ELECTRICAL CONNECTORS X20 FROM THE PCB AND TO THE FAN ASSEMBLY

Next: p2311, !f2312

VOLTAGE FAN HALL SENSOR AT PCB

{GAINPCBACS}

Next: !p2313, !f2314

INSPECTION CONDENSATE PIPE

Next: p235, !f270

OBSERVATION SPARK AT ELECTRODE

Next: p236, f237

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p295, !f243

RESISTANCE PUMP HARNESS ERP

REMOVE X14 PUMP CONNECTOR FROM THE PCB
DISCONNECT PLUG FROM THE PUMP

Next: p2522, !f2547

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2372, !f2373

OBSERVATION SPARKING HEARD

REMOVE IGNITION LEAD FROM SPARK GENERATOR AND MAKE SAFE

Next: !p240, f2114

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2433, !f2434

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2437, !f2438

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p30, !f26

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2459, !f2446

VOLTAGE PUMP AT PCB

{GAINPCBACS}

Next: !p2441, !f2447

VOLTAGE GAS VALVE AT PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM GAS VALVE AND MAKE SAFE

Next: p244, f245

RESISTANCE GAS VALVE AND HARNESS

{GAINPCBACS}
REMOVE CONNECTOR X20 FROM THE PCB

Next: p2291, f251

VOLTAGE PUMP AT PCB ERP

{GAINPCBACS}

Next: !p2523, !f2524

RESISTANCE PUMP AND HARNESS ERP

{GAINPCBACS}
REMOVE X14 PUMP CONNECTOR FROM THE PCB

Next: !p2541, !f2542

RESISTANCE PUMP HARNESS ERP

REMOVE X14 PUMP CONNECTOR FROM THE PCB
DISCONNECT PLUG FROM THE PUMP

Next: p2549, !f2550

VOLTAGE PUMP AT PCB ERP

{GAINPCBACS}

Next: !p2551, !f2552

RESISTANCE PUMP HARNESS ERP

REMOVE X14 PUMP CONNECTOR FROM THE PCB
DISCONNECT PLUG FROM THE PUMP

Next: p2554, !f2555

VOLTAGE PUMP AT PCB ERP

{GAINPCBACS}

Next: !p2556, !f2557

RESISTANCE PUMP HARNESS ERP

REMOVE X14 PUMP CONNECTOR FROM THE PCB
DISCONNECT PLUG FROM THE PUMP

Next: p2559, !f2560

VOLTAGE PUMP AT PCB ERP

{GAINPCBACS}

Next: !p2561, !f2562

RESISTANCE PUMP HARNESS ERP

REMOVE X14 PUMP CONNECTOR FROM THE PCB
DISCONNECT PLUG FROM THE PUMP

Next: p2564, !f2565

VOLTAGE PUMP AT PCB ERP

{GAINPCBACS}

Next: !p2566, !f2567

INSPECTION CONDENSATE PIPE

Next: p284, !f281

PRESSURE GAS VALVE INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p282, !f283

INSPECTION FLUE ASSEMBLY

Next: p289, !f290

INSPECTION AIR BOX

REMOVE AIR BOX FROM GAS VALVE

Next: p280, !f288

INSPECTION BURNER ASSEMBLY

REMOVE COMBUSTION BLOCK FROM BOILER
REMOVE LEFT-HAND SIDE CASE IF REQUIRED

Next: p291, !f292

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p293, !f294

INSPECTION AIR BOX

REMOVE AIR BOX FROM GAS VALVE

Next: p242, !f321

OBSERVATION POSITION DIVERTER VALVE - DHW

Next: !p368, f353

VOLTAGE DIVERTER VALVE - POWER UP

REMOVE ELECTRICAL CONNECTOR TO DIVERTER VALVE AND MAKE SAFE
ENSURE NO DEMANDS ARE PRESENT

Next: !p375, !f376

RESISTANCE HARNESS DIVERTER VALVE

REMOVE CONNECTOR X2 FROM THE PCB AND
ELECTRICAL CONNECTOR TO THE DIVERTER VALVE

Next: !p386, !f387

OBSERVATION COLD WATER SUPPLY

Next: p47, !f48

INSPECTION SENSOR FLOW - DHW

ISOLATE COLD FEED TO BOILER
DRAIN DHW CIRCUIT
REMOVE DHW FLOW SENSOR

Next: p1590, ?51, ?53

INSPECTION FLUE ASSEMBLY

Next: p486, !f487

INSPECTION COMBUSTION SEALS

Next: p488, !f489

ADJUSTMENT AIR/GAS RATIO

CONNECT FGA TO THE COMBUSTION TEST POINT ON THE BOILER
ENSURE CH SYSTEM IS COOL

Next: p490, f548

AIR/GAS RATIO - ADJUSTED CORRECTLY

THE COMBUSTION READI

Next: !p502, !f1686

INSPECTION AIR BOX

REMOVE AIR BOX FROM GAS VALVE

Next: p526, !f524

INSPECTION CONDENSATE PIPE

Next: p484, !f546

INSPECTION FLUEWAYS HEAT EXCHANGER

Next: !p551, !f552

INSPECTION ISOLATION VALVES FLOW AND RETURN

Next: p566, !f567

INSPECTION EXPANSION VESSEL PRESSURE

DISCHARGE PRIMARY SYSTEM WATER

Next: !p581, !f582

OBSERVATION MAXIMUM HEATING POWER

Next: p583, f587

PUMP LIMPET TEST

Next: p568, !f569

OBSERVATION POSITION DIVERTER VALVE - CH

Next: p570, f572

TEMPERATURE DIFFERENTIAL - INTERNAL BYPASS

ENSURE RADIATORS ARE

Next: !p593, !f594

VOLTAGE DIVERTER VALVE - POWER UP

REMOVE ELECTRICAL CONNECTOR TO DIVERTER VALVE AND MAKE SAFE
ENSURE NO DEMANDS ARE PRESENT

Next: !p579, !f580

RESISTANCE HARNESS DIVERTER VALVE

REMOVE CONNECTOR X2 FROM THE PCB AND
ELECTRICAL CONNECTOR TO THE DIVERTER VALVE

Next: !p577, !f578

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p599, !f586

PARAMETER SET CORRECTLY - RADIATOR TEMPERATURE LOW

THE MAXIMUM HEATING

Next: !p591, !f592

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: !p600, !f601

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p738, !f739

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p752, !f753

OBSERVATION SYSTEM PRESSURE

Next: p786, f1991

OBSERVATION THERMISTORS CORRECTLY FITTED

Next: p2163, !f789

OBSERVATION PUMP RUNS

Next: p790, f2403

PUMP LIMPET TEST

Next: p797, !f1377

CH OPERATION - FAULT CODE F83

Next: p799, !f800

DHW OPERATION - FAULT CODE F83

Next: !p807, f802

RESISTANCE THERMISTOR FLOW

REMOVE LEFT HAND SIDE PANEL
REMOVE RED LEADS TO FLOW THERMISTOR

Next: p842, !f843

RESISTANCE THERMISTOR RETURN

REMOVE LEFT HAND SIDE PANEL
REMOVE BLUE LEADS TO RETURN THERMISTOR

Next: p846, !f845

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: p2251, !f848

VOLTAGE FLOW SENSOR DHW - RETURN

{GAINPCBACS}
ENSURE A FLOW RATE OF 3 LITRES PER MINUTE

Next: p2103, f94

ADJUST PRIMARY SYSTEM PRESSURE

LOCATE PRIMARY SYSTEM FILLING LOOP

Next: p938, f1983

RESISTANCE HARNESS SENSOR SYSTEM PRESSURE

REMOVE CONNECTOR X2 FROM THE PCB
REMOVE CONNECTOR TO SYSTEM PRESSURE SENSOR

Next: !p936, !f937

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p945, !f946

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1059, !f952

RESISTANCE HARNESS FLOW SENSOR

REMOVE ELECTRICAL CONNECTORS X2 FROM THE PCB AND
TO THE DHW FLOW SENSOR

Next: !p97, !f98

VOLTAGE FAN CONTROL PCB

{GAINPCBACS}
REMOVE ELECTRICAL CONNECTOR FROM FAN ASSEMBLY, LEAVE IN A SAFE LOCATION

Next: p100, f101

System Information

  • Total Tests: 786
  • Sequence Logic: Decoded from encrypted .seq file
  • Navigation: Dynamic based on pass/fail results
  • Source: 4731307 GW SWIFTFLOW 100 SIT Control

XSol Diagnostic System - Generated from extracted test data