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:

ALPHA INTEC2 26 & 30CE

GLOBAL PAGE

Next: &16, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

CH OPERATION

CH & DHW TEMPERATURE CONTROLS SET TO MAX

Next: &nff, ?298, ?300, ?302, ?304

DHW OPERATION

CH & DHW TEMPERATURE CONTROLS SET TO MAX

Next: &7, ?290, ?292, ?294, ?296, ?308

PRESSURE GAS INLET

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: &8, !f289

OBSERVATION BURNER IGNITION & ESTABLISH

Next: &9, ?121, ?123, ?125

OBSERVATION PUMP RUNS

Next: &10, f103

DHW FLOW RATE

Next: &75, f67

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &13, !f1272

OBSERVATION BOILER PURGE / SELF CHECK

ENSURE NO DEMANDS
CH & DHW TEMPERATURE CONTROLS SET TO MAX

Next: &14, ?19, ?21, ?23, ?57, ?59, ?1321

INFORMATION CASE REMOVAL

Next: &15, !f17

OBSERVATION FAN RUNS

ENSURE BOILER IS COOL
FLOW RATE SET @ 3 LITRES/MIN

Next: &12, f1448

PARAMETER GUIDANCE

Next: &nff, !f503

PREHEAT DISABLE GUIDANCE

NOT USED

Next: &nff, !f577

FAULT CODE E29

BLANK PAGE

Next: &nff, f744

FAULT CODE E23

BLANK PAGE

Next: &nff, f641

FAULT CODE E12 / 15

BLANK PAGE

Next: &nff, f614

FAULT CODE 10

BLANK PAGE

Next: &nff, f607

FAULT CODE 08

BLANK PAGE

Next: &nff, f1012

FAULT CODE E06

BLANK PAGE

Next: &nff, f598

FAULT CODE E05

BLANK PAGE

Next: &nff, f591

FAULT CODE E04 - E87 - E88

Next: &nff, f1005

FAULT CODE E03

BLANK PAGE

Next: &nff, f941

FAULT CODE E02

BLANK PAGE

Next: &nff, f845

FAULT CODE E16

BLANK PAGE

Next: &nff, f1469

FAULT CODE E37

BLANK PAGE

Next: &nff, f784

FAULT CODE E60

BLANK PAGE

Next: &nff, f792

FAULT CODE E96

BLANK PAGE

Next: &nff, f1222

FAULT CODE E59

BLANK PAGE

Next: &nff, f839

FAULT CODE E74

BLANK PAGE

Next: &nff, f847

FAULT CODE E24

BLANK PAGE

Next: &nff, f1026

FAULT CODE E31

BLANK PAGE

Next: &nff, f1325

FAULT CODE E46

BLANK PAGE

Next: &nff, f1033

FAULT CODE E20

BLANK PAGE

Next: &nff, f1039

FAULT CODE E45

BLANK PAGE

Next: &nff, f1072

FAULT CODE E51

BLANK PAGE

Next: &nff, !f1326

FAULT CODE E61

BLANK PAGE

Next: &nff, f1140

FAULT CODE E77 - E78 - E79

BLANK PAGE

Next: &nff, f1164

FAULT CODE E89 TO E95

BLANK PAGE

Next: &nff, f1178

FAULT CODE E98 - E99

BLANK PAGE

Next: &nff, f1202

FAULT CODE --

BLANK PAGE

Next: &nff, f1239

FUSE FURTHER INVESTIGATION

BLANK PAGE

Next: &nff, f1480

PRHEAT ENABLE GUIDANCE

NOT USED

Next: &nff, !f1314

FAULT CODE E44

BLANK PAGE

Next: &nff, f1316

FAULT CODE E03/E47

WIRING HARNESS

Next: End

FAULT CODE E03/E47

KIT - PCB

Next: End

FAULT CODE E03/E47

KIT - SPARES - EXCHANGER - E03/E47

Next: End

FAULT CODE E04

KIT - SPARES - GAS VALVE

Next: End

FAULT CODE E04 2

KIT - SPARES - GAS VALVE

Next: End

INFORMATION MENU 2

Z REDIRECT

Next: End

FAULT CODE E12/15

KIT - PCB

Next: End

FAULT CODE E24

KEY BOARD - SILICONE

Next: End

FAULT CODE E24

KIT - PCB

Next: End

FAULT CODE E46

KIT - PCB

Next: End

FAULT CODE E20

KIT - SPARES - GAS VALVE

Next: End

FAULT CODE E20 2

KIT - ELECTRODE

Next: End

FAULT CODE E20

KIT - ELECTRODE

Next: End

FAULT CODE E45

WIRING HARNESS

Next: End

FAULT CODE E45 3

KIT - PCB

Next: End

FAULT CODE E45

MOTOR - PUMP HEAD

Next: End

FAULT CODE E45

AIR - HEAT EXCHANGER

Next: End

FAULT CODE E45

PROBE - NTC

Next: End

FAULT CODE E45 3

PROBE - NTC

Next: End

FAULT CODE E45 2

PROBE - NTC

Next: End

FAULT CODE E45 4

PROBE - NTC

Next: End

FAULT CODE E45 2

KIT - PCB

Next: End

PMP DOES NOT RUN

KIT - PCB

Next: End

FAULT CODE E45

KIT - SPARES - EXCHANGER - WATERWAYS

Next: End

FAULT CODE E61

AIR - HEAT EXCHANGER

Next: End

FAULT CODE E61

SERVICE VALVES

Next: End

FAULT CODE E61

KIT - SPARES - EXCHANGER - WATERWAYS

Next: End

FAULT CODE E61 2

KIT - PCB

Next: End

FAULT CODE E61

KIT - PCB

Next: End

FAULT CODE E73

PROBE - NTC

Next: End

FAULT CODE

GAS INLET PRESSURE

Next: End

FAULT CODE E77 - E78 - E79 2

KIT - ELECTRODE

Next: End

FAULT CODE E77 - E78 - E79

KIT - ELECTRODE

Next: End

FAULT CODE E77 - E78 - E79

KIT - SPARES - GAS VALVE

Next: End

FAULT CODE E89 TO E95

GAS INLET PRESSURE

Next: End

FAULT CODE E89 TO E95

FLUE

Next: End

FAULT CODE E89 TO E95

EARTH WIRE - BURNER

Next: End

FAULT CODE E89 TO E95

KIT - ELECTRODE

Next: End

FAULT CODE E89 TO E95

KIT - SPARES - GAS VALVE

Next: End

FAULT CODE E89 TO E95 2

KIT - ELECTRODE

Next: End

FAULT CODE E98 - E99

KIT - PCB

Next: End

FAULT CODE E96

PLASTIC SYPHON ASSEMBLY

Next: End

FAULT CODE E96

GAS MIXER

Next: End

FAULT CODE E96

FLUE

Next: End

FAULT CODE E96

KIT - PCB

Next: End

FAULT CODE --

PROBE - NTC

Next: End

FAULT CODE --

SENSOR - TEMPERATURE - DHW

Next: End

FAULT CODE --

PARAMETER

Next: End

FAULT CODE --

KIT - PCB

Next: End

NO DISPLAY

FUSE - FUSED SPUR

Next: End

NO DISPLAY

FUSE 5 X 20 315 AF

Next: End

DIAGNOSTIC PROCEDURE

Z REDIRECT

Next: End

BURNER DOES NOT IGNITE

PLASTIC SYPHON ASSEMBLY

Next: End

NO DISPLAY

KIT - PCB

Next: End

ENABLE PREHEAT

Z REDIRECT

Next: End

FAULT CODE E44

INSTALLATION - FAULT CODE 44

Next: End

DOES NOT IGNITE

KIT - ELECTRODE

Next: End

FAULT CODE E44

KIT - PCB

Next: End

DOT DISPLAYED

KIT - PCB

Next: End

FAULT CODE E51

BATTERIES - CLIMATIC TRANSMITTER

Next: End

ALPHA CLIMATIC UNIT

KIT - PCB

Next: End

DOES NOT IGNITE 2

KIT - ELECTRODE

Next: End

CH RADS COOL

Next: End

DOES NOT IGNITE

GAS INLET PRESSURE

Next: End

BURNER BAFFLES

FLUE

Next: End

CH DOES NOT RESPOND

PROGRAMMER/TIMER

Next: End

CH DOES NOT RESPOND 2

PROGRAMMER/TIMER

Next: End

CH DOES NOT RESPOND 1

PROGRAMMER/TIMER

Next: End

FAULT CODE E10

SWITCH - PRESSURE

Next: End

FAULT CODE E10 2

MANOMETER

Next: End

DHW COOL RADS COOL

PLASTIC SYPHON ASSEMBLY

Next: End

DHW COOL RADS COOL

GAS MIXER

Next: End

DHW COOL RADS COOL 2

FLUE

Next: End

DHW COOL RADS COOL 2

FAN

Next: End

BOILER OUTPUT

PARAMETER

Next: End

CH RADS COOL 2

MOTOR - PUMP HEAD

Next: End

CH RADS COOL

PROBE - NTC

Next: End

CH RADS COOL 2

PROBE - NTC

Next: End

BOILER OUTPUT 2

PARAMETER

Next: End

DHW COOL RADS COOL 2

PLASTIC SYPHON ASSEMBLY

Next: End

DHW COOL RADS COOL 2

GAS MIXER

Next: End

DHW COOL RADS COOL

FLUE

Next: End

DHW COOL RADS COOL

FAN

Next: End

BOILER OUTPUT 3

PARAMETER

Next: End

DHW FLOW RATE

PROBE - NTC

Next: End

OUTPUT 4

PARAMETER

Next: End

FAN DOES NOT RUN 2

KIT - PCB

Next: End

FAN DOES NOT RUN

WIRING HARNESS

Next: End

FAN DOES NOT RUN

SENSOR - TEMPERATURE - DHW

Next: End

FAN DOES NOT RUN

PROBE - NTC

Next: End

FAN RUNS

PROBE-NTC- FAST IMMERSION

Next: End

FAN DOES NOT RUN 4

KIT - PCB

Next: End

FAN DOES NOT RUN 5

KIT - PCB

Next: End

FAN DOES NOT RUN 3

WIRING HARNESS

Next: End

FAULT CODE E16 2

KIT - PCB

Next: End

FAULT CODE E16 3

KIT - PCB

Next: End

FAULT CODE E16 3

WIRING HARNESS

Next: End

FAULT CODE E16

WIRING HARNESS

Next: End

DOES NOT IGNITE 2

GAS MIXER

Next: End

FUSE FURTHER INVESTIGATION

MOTOR - PUMP HEAD

Next: End

PMP DOES NOT RUN

WIRING HARNESS

Next: End

PUMP DOES NOT RUN

KIT - PCB

Next: End

DOES NOT IGNITE 2

FLUE

Next: End

DOES NOT IGNITE 3

KIT - ELECTRODE

Next: End

CASE REMOVAL

Z REDIRECT

Next: End

DOES NOT IGNITE

GAS MIXER

Next: End

DOES NOT IGNITE

FLUE

Next: End

DOES NOT IGNITE

FAN

Next: End

BURNER BAFFLES

PLASTIC SYPHON ASSEMBLY

Next: End

BURNER BAFFLES

GAS INLET PRESSURE

Next: End

DOES NOT IGNITE 3

GAS MIXER

Next: End

DOES NOT IGNITE 3

FLUE

Next: End

DOES NOT IGNITE 2

FAN

Next: End

DOES NOT ESTABLISH

PLASTIC SYPHON ASSEMBLY

Next: End

DOES NOT ESTABLISH

GAS INLET PRESSURE

Next: End

DOES NOT ESTABLISH

KIT - ELECTRODE

Next: End

DOES NOT ESTABLISH 2

KIT - ELECTRODE

Next: End

INLET PRESSURE

GAS INLET PRESSURE

Next: End

SELF CHECK

DOMESTIC PLUMBING

Next: End

SELF CHECK

FLOW REGULATOR & FLOWMETER - MOTOR REDUCER GROUP

Next: End

DHW RADS HEAT 2

MOTOR- DIVERTER VALVE

Next: End

DHW TOO HOT

SENSOR - TEMPERATURE - DHW

Next: End

DHW COOL RADS COOL

SENSOR - TEMPERATURE - DHW

Next: End

DHW COOL RADS COOL

PROBE - NTC

Next: End

DHW COOL RADS COOL

MOTOR - PUMP HEAD

Next: End

DHW COOL RADS COOL

PLUMBING ISSUE

Next: End

SELF CHECK

SENSOR - TEMPERATURE - DHW

Next: End

DHW HOT COLD

SENSOR - TEMPERATURE - DHW

Next: End

DHW HOT COLD

PROBE - NTC

Next: End

DHW HOT COLD

MOTOR - PUMP HEAD

Next: End

CH RADS COOL

SERVICE VALVES

Next: End

CH RADS COOL 2

CARTRIDGE - DIVERTER

Next: End

CH RADS COOL

MOTOR - PUMP HEAD

Next: End

CH RADS COOL 2

MOTOR- DIVERTER VALVE

Next: End

CH OPERATION

EXPANSION 8 LITRES

Next: End

POOR FLOW RATE

SERVICE VALVES

Next: End

POOR FLOW RATE

COLD WATER SUPPLY

Next: End

SELF CHECK

PROBE - NTC

Next: End

POOR FLOW RATE

PARAMETER

Next: End

POOR FLOW RATE 2

FLOW REGULATOR & FLOWMETER - MOTOR REDUCER GROUP

Next: End

POOR FLOW RATE 3

FLOW REGULATOR & FLOWMETER - MOTOR REDUCER GROUP

Next: End

CH RADS COOL

CARTRIDGE - BYPASS - COMPLETE

Next: End

PARAMETER GUIDANCE

Z REDIRECT

Next: End

CH DOES NOT RESPOND

KIT - PCB

Next: End

SELF CHECK 2

PROBE - NTC

Next: End

CH DOES NOT RESPOND 5

KIT - PCB

Next: End

CH DOES NOT RESPOND

WIRING HARNESS

Next: End

CH DOES NOT RESPOND 11

KIT - PCB

Next: End

CH DOES NOT RESPOND 13

KIT - PCB

Next: End

FAULT CODE 2

Z REDIRECT

Next: End

CH DOES NOT RESPOND 3

WIRING HARNESS

Next: End

CH DOES NOT RESPOND 9

KIT - PCB

Next: End

CH DOES NOT RESPOND 12

KIT - PCB

Next: End

CH DOES NOT RESPOND 2

WIRING HARNESS

Next: End

PREHEAT GUIDANCE

Z REDIRECT

Next: End

FAULT CODE E05

PROBE - NTC

Next: End

FAULT CODE E05

KIT - PCB

Next: End

FAULT CODE E06

SENSOR - TEMPERATURE - DHW

Next: End

FAULT CODE E06

KIT - PCB

Next: End

FAULT CODE E23

PROBE - NTC

Next: End

FAULT CODE E23

KIT - PCB

Next: End

ST-BY

KIT - PCB

Next: End

WINTER MODE

KIT - PCB

Next: End

DHW FLOW RATE

SERVICE VALVES

Next: End

DHW FLOW RATE

COLD WATER SUPPLY

Next: End

DHW COOL RADS COOL 2

PROBE - NTC

Next: End

FLOW RATE

FLOW REGULATOR & FLOWMETER - MOTOR REDUCER GROUP

Next: End

DHW HOT COLD 2

PROBE - NTC

Next: End

FAULT CODE E29

PROBE - NTC

Next: End

FAULT CODE E29

KIT - PCB

Next: End

FAULT CODE E37

Next: End

FAULT CODE E37

KIT - PCB

Next: End

FAULT CODE E60

WIRING HARNESS

Next: End

FAULT CODE E60

KIT - PCB

Next: End

FAULT CODE E59

Next: End

FAULT CODE E59

KIT - PCB

Next: End

FAULT CODE E74

PROBE - NTC

Next: End

FAULT CODE E74

KIT - PCB

Next: End

FAULT CODE E02

PROBE - NTC

Next: End

FAULT CODE E02 1

WIRING HARNESS

Next: End

FAULT CODE E02 3

KIT - PCB

Next: End

FAULT CODE E02

MOTOR - PUMP HEAD

Next: End

FAULT CODE E02 1

PROBE - NTC

Next: End

FAULT CODE E02 2

PROBE - NTC

Next: End

FAULT CODE E02

KIT - SPARES - EXCHANGER - WATERWAYS

Next: End

FAULT CODE E02 1

KIT - PCB

Next: End

FAULT CODE E02

SENSOR - TEMPERATURE - DHW

Next: End

FAULT CODE E02

AIR - HEAT EXCHANGER

Next: End

FAULT CODE E03

PROBE - NTC

Next: End

FAULT CODE E03/E47 3

MOTOR - PUMP HEAD

Next: End

FAULT CODE E03/E47

PLASTIC SYPHON ASSEMBLY

Next: End

FAULT CODE E03/E47

GAS MIXER

Next: End

FAULT CODE E03/E47

FLUE

Next: End

FAULT CODE E03/E47

FAN

Next: End

FAULT CODE E03/E47

AIR - HEAT EXCHANGER

Next: End

FAULT CODE E03/E47 2

KIT - SPARES - EXCHANGER - WATERWAYS

Next: End

FAULT CODE E03/E47 2

MOTOR - PUMP HEAD

Next: End

FAULT CODE E03/E47

MOTOR - PUMP HEAD

Next: End

FAULT CODE E04

WIRING HARNESS

Next: End

FAULT CODE E04

FAULT CODE RESET

Next: End

INFORMATION MENU

Z REDIRECT

Next: End

FAULT CODE E12/15

FAULT CODE RESET

Next: End

FAULT CODE E24

FAULT CODE RESET

Next: End

FAULT CODE E46

FAULT CODE RESET

Next: End

FAULT CODE E20

FAULT CODE RESET

Next: End

FAULT CODE E20

KIT - PCB

Next: End

FAULT CODE E45 3

MOTOR - PUMP HEAD

Next: End

FAULT CODE E45 2

MOTOR - PUMP HEAD

Next: End

FAULT CODE E45

KIT - PCB

Next: End

FAULT CODE E45

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

FAULT CODE E45

FAULT CODE E02 - E45 - E61 - E73

Next: End

FAULT CODE E46

TERMINAL BLOCK - EXTERNAL CONNECTION 14 & 15

Next: End

FAULT CODE E46

EXTERNAL SAFETY DEVICE

Next: End

FAULT CODE E61

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

FAULT CODE E61

FAULT CODE E02 - E45 - E61 - E73

Next: End

FAULT CODE E77 - E78 - E79 2

FAULT CODE RESET

Next: End

FAULT CODE E77 - E78 - E79

FAULT CODE RESET

Next: End

PMP DOES NOT RUN 2

MOTOR - PUMP HEAD

Next: End

FAULT CODE E89 TO E95

FAULT CODE RESET

Next: End

FAULT CODE E89 TO E95

KIT- SPARES - BURNER

Next: End

FAULT CODE E89 TO E95

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

FAULT CODE E89 TO E95

FULL CALIBRATION - AIR / GAS RATIO

Next: End

FAULT CODE E98 - E99

FAULT CODE RESET

Next: End

FAULT CODE E96

FAN

Next: End

FAULT CODE E96

KIT- SPARES - BURNER

Next: End

FAULT CODE E96

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

FAULT CODE E96

FAULT CODE RESET

Next: End

FAULT CODE -- 2

WIRING HARNESS

Next: End

FAULT CODE --

WIRING HARNESS

Next: End

FAULT CODE --

FAULT CODE RESET

Next: End

NO DISPLAY

WIRING HARNESS

Next: End

NO DISPLAY

Next: End

NO DISPLAY

Z REDIRECT

Next: End

NO DISPLAY 2

Z REDIRECT

Next: End

NO DISPLAY

FAN

Next: End

NO DISPLAY

KIT - SPARES - GAS VALVE

Next: End

NO DISPLAY

MOTOR- DIVERTER VALVE

Next: End

NO DISPLAY

FLOW REGULATOR & FLOWMETER - MOTOR REDUCER GROUP

Next: End

FAULT CODE E44

FAULT CODE RESET

Next: End

DOT DISPLAYED

Z REDIRECT

Next: End

DOES NOT IGNITE

KIT - PCB

Next: End

FAULT CODE E31

ALPHA CLIMATIC CONTROL UNIT

Next: End

CH DOES NOT RESPOND 4

WIRING HARNESS

Next: End

CH DOES NOT RESPOND 5

WIRING HARNESS

Next: End

CH DOES NOT RESPOND 6

WIRING HARNESS

Next: End

FAULT CODE E10 1

SWITCH - PRESSURE

Next: End

DHW COOL RADS COOL

KIT - PCB

Next: End

DHW COOL RADS COOL

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

CH RADS COOL 3

KIT - PCB

Next: End

DHW COOL RADS COOL 3

KIT - PCB

Next: End

DHW COOL RADS COOL 4

KIT - PCB

Next: End

DHW COOL RADS COOL

KIT- SPARES - BURNER

Next: End

DHW COOL RADS COOL 2

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

FAULT CODE E02 3

PROBE - NTC

Next: End

CH RADS COOL

MOTOR- DIVERTER VALVE

Next: End

DHW RADS HEAT

MOTOR- DIVERTER VALVE

Next: End

DHW COOL RADS COOL 2

KIT - PCB

Next: End

FAN DOES NOT RUN

KIT - PCB

Next: End

FAN DOES NOT RUN

FLOW REGULATOR & FLOWMETER - MOTOR REDUCER GROUP

Next: End

FAN DOES NOT RUN 2

FAN

Next: End

FAULT CODE E16 3

FAN

Next: End

FAULT CODE E16

FAN

Next: End

FUSE FURTHER INVESTIGATION

KIT - PCB - FUSE BLOWN

Next: End

FUSE FURTHER INVESTIGATION

WIRING HARNESS

Next: End

PMP DOES NOT RUN

MOTOR - PUMP HEAD

Next: End

DOES NOT IGNITE 2

KIT - SPARES - GAS VALVE

Next: End

DOES NOT IGNITE 3

KIT - SPARES - GAS VALVE

Next: End

DOES NOT IGNITE

KIT- SPARES - BURNER

Next: End

DOES NOT IGNITE 1

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

DOES NOT IGNITE

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

BURNER BAFFLES

KIT- SPARES - BURNER

Next: End

BURNER BAFFLES 2

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

DOES NOT IGNITE

KIT - SPARES - GAS VALVE

Next: End

BURNER BAFFLES

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

DOES NOT ESTABLISH

KIT - PCB

Next: End

DHW RADS HEAT

CARTRIDGE - DIVERTER

Next: End

DHW RADS HEAT

KIT - PCB

Next: End

DHW RADS HEAT 2

KIT - PCB

Next: End

DHW RADS HEAT

WIRING HARNESS

Next: End

DHW TOO HOT

KIT - PCB

Next: End

DHW COOL RADS COOL

KIT - SPARES - EXCHANGER - WATERWAYS

Next: End

SELF CHECK

KIT - PCB

Next: End

DHW COOL RADS COOL

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

DHW HOT COLD

KIT - PCB

Next: End

DHW HOT COLD

KIT - SPARES - EXCHANGER - WATERWAYS

Next: End

DHW HOT COLD

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

SELF CHECK

FROST PROTECTION MODE

Next: End

CH RADS COOL

Next: End

CH RADS COOL

KIT - PCB

Next: End

CH RADS COOL 2

KIT - PCB

Next: End

CH RADS COOL

WIRING HARNESS

Next: End

CH RADS COOL

PIPE DIA8 - EXPANSION VESSEL

Next: End

SELF CHECK 2

KIT - PCB

Next: End

POOR FLOW RATE

KIT - PCB

Next: End

POOR FLOW RATE

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

POOR FLOW RATE 2

KIT - PCB

Next: End

SELF CHECK

Next: End

SELF CHECK 3

KIT - PCB

Next: End

CH DOES NOT RESPOND 3

KIT - PCB

Next: End

CH DOES NOT RESPOND

Next: End

CH DOES NOT RESPOND 4

KIT - PCB

Next: End

CH DOES NOT RESPOND 4

Next: End

CH DOES NOT RESPOND 8

KIT - PCB

Next: End

FAULT CODE

Z REDIRECT

Next: End

CH DOES NOT RESPOND 6

Next: End

CH DOES NOT RESPOND 7

KIT - PCB

Next: End

CH DOES NOT RESPOND 8

Next: End

CH DOES NOT RESPOND 10

KIT - PCB

Next: End

CH DOES NOT RESPOND 5

Next: End

CH DOES NOT RESPOND 6

KIT - PCB

Next: End

CH DOES NOT RESPOND 7

Next: End

FAULT CODE E05

WIRING HARNESS

Next: End

FAULT CODE E05

FAULT CODE RESET

Next: End

FAULT CODE E06

WIRING HARNESS

Next: End

FAULT CODE E06

FAULT CODE RESET

Next: End

SELF CHECK

Z REDIRECT

Next: End

FAULT CODE E10

SYSTEM PRESSURE

Next: End

FAULT CODE E10

MANOMETER

Next: End

SELF CHECK 3

Z REDIRECT

Next: End

FAULT CODE E10

WIRING HARNESS

Next: End

FAULT CODE E10

KIT - PCB

Next: End

FAULT CODE E10 1

KIT - PCB

Next: End

FAULT CODE E10 1

WIRING HARNESS

Next: End

FAULT CODE E23

WIRING HARNESS

Next: End

FAULT CODE E23

FAULT CODE RESET

Next: End

DHW FLOW RATE

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

FAULT CODE E29

WIRING HARNESS

Next: End

FAULT CODE E29

FAULT CODE RESET

Next: End

FAULT CODE E37

WIRING HARNESS

Next: End

FAULT CODE E37

FAULT CODE RESET

Next: End

FAULT CODE E60 2

MOTOR - PUMP HEAD

Next: End

FAULT CODE E60

MOTOR - PUMP HEAD

Next: End

FAULT CODE E59

FAULT CODE RESET

Next: End

FAULT CODE E74

WIRING HARNESS

Next: End

FAULT CODE E74

FAULT CODE RESET

Next: End

FAULT CODE E02 2

MOTOR - PUMP HEAD

Next: End

FAULT CODE E02 1

MOTOR - PUMP HEAD

Next: End

FAULT CODE E02

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

FAULT CODE E02

KIT - PCB

Next: End

FAULT CODE E02 4

KIT - PCB

Next: End

FAULT CODE E02

FAULT CODE E02 - E45 - E61 - E73

Next: End

FAULT CODE E03

KIT - PCB

Next: End

FAULT CODE E03/E47

KIT - SPARES - EXCHANGER - FLUEWAYS

Next: End

FAULT CODE E03/E47

KIT - HEAT EXCHANGER - 18 PLATE

Next: End

FAULT CODE E03/E47

FAULT CODE RESET

Next: End

RESISTANCE NOT AS EXPECTED - WIRE LINK FITTED BETWEEN 14 & 15

CHARACTERISTIC TEST FROM RESISTANCE OPTIONAL EXTERNAL SAFETY SENSOR (E46)

Next: !p1134

RESISTANCE NOT AS EXPECTED - EXTERNAL SAFETY DEVICE FITTED BETWEEN 14 & 15

CHARACTERISTIC TEST FROM RESISTANCE OPTIONAL EXTERNAL SAFETY SENSOR (E46)

Next: !p1136

BURNER RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1194

HEAT EXCHANGER FLUEWAYS RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1196

BURNER IGNITES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p232

BURNER IGNITES BUT DOES NOT ESTABLISH (SPARKING CONTINUES)

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p124

BURNER RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1233

HEAT EXCHANGER FLUEWAYS RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1235

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p126

DISPLAY STOPS OPERATING WHEN GAS VALVE IS RECONNECTED

CHARACTERISTIC TEST FROM RECONNECT LOW VOLTAGE COMPONENTS

Next: !p1292

DISPLAY STOPS OPERATING WHEN DIVERTER VALVE MOTOR IS RECONNECTED

CHARACTERISTIC TEST FROM RECONNECT LOW VOLTAGE COMPONENTS

Next: !p1294

DISPLAY STOPS OPERATING WHEN FLOW REGULATOR MOTOR IS RECONNECTED

CHARACTERISTIC TEST FROM RECONNECT LOW VOLTAGE COMPONENTS

Next: !p1296

SMALL DOT DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION BOILER PURGE / SELF CHECK

Next: p1322

BURNER RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1416

HEAT EXCHANGER FLUEWAYS RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p1418

BURNER RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p208

HEAT EXCHANGER FLUEWAYS RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p209

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

CHARACTERISTIC TEST FROM OBSERVATION BOILER PURGE / SELF CHECK

Next: p20

FAULT CODE DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION BOILER PURGE / SELF CHECK

Next: p54

DISPLAY DOES NOT OPERATE CORRECTLY

CHARACTERISTIC TEST FROM OBSERVATION BOILER PURGE / SELF CHECK

Next: p24

BURNER RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p274

HEAT EXCHANGER FLUEWAYS RESTRICTED, BLOCKED AND/OR DAMAGED

CHARACTERISTIC TEST FROM INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

Next: !p276

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

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p334

DHW COOL - RADIATORS BEGIN TO HEAT OR INCREASE IN TEMPERATURE

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p293

DHW TOO HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p295

DHW RUNS HOT THEN COOL

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p297

BOILER DOES NOT RESPOND TO CH DEMAND

CHARACTERISTIC TEST FROM CH OPERATION

Next: p561

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

CHARACTERISTIC TEST FROM CH OPERATION

Next: p301

BOILER TEMPERATURE AND SYSTEM TEMPERATURE LOW - BOILER REMAINS LIT

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1392

EXCESSIVE SYSTEM PRESSURE RISE AS SYSTEM HEATS

CHARACTERISTIC TEST FROM CH OPERATION

Next: p305

DHW POOR FLOW RATE

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p472

VOLTAGE NOT AS EXPECTED ON TEST 1

CHARACTERISTIC TEST FROM VOLTAGE STEPPER MOTOR (FLOW REGULATOR)

Next: p315

VOLTAGE NOT AS EXPECTED ON TEST 2/3

CHARACTERISTIC TEST FROM VOLTAGE STEPPER MOTOR (FLOW REGULATOR)

Next: !p317

BOILER DOES NOT RESPOND TO CH DEMAND

CHARACTERISTIC TEST FROM CH OPERATION

Next: p546

DIFFERENTIAL TEMPERATURE EXCESSIVELY HIGH

CHARACTERISTIC TEST FROM TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

Next: !p353

GAS RATE UNSATISFACTORY

Next: p1379

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

Next: p1401

BOILER DOES NOT RESPOND TO CH DEMAND

CHARACTERISTIC TEST FROM CH OPERATION

Next: p427

DIFFERENTIAL TEMPERATURE EXCESSIVELY HIGH

CHARACTERISTIC TEST FROM TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

Next: !p429

VOLTAGE NOT AS EXPECTED ON TEST 1

CHARACTERISTIC TEST FROM VOLTAGE STEPPER MOTOR (FLOW REGULATOR)

Next: p457

VOLTAGE NOT AS EXPECTED ON TEST 2/3

CHARACTERISTIC TEST FROM VOLTAGE STEPPER MOTOR (FLOW REGULATOR)

Next: !p459

VOLTAGE NOT AS EXPECTED ON TEST 1

CHARACTERISTIC TEST FROM VOLTAGE STEPPER MOTOR (FLOW REGULATOR)

Next: p485

VOLTAGE NOT AS EXPECTED ON TEST 2/3

CHARACTERISTIC TEST FROM VOLTAGE STEPPER MOTOR (FLOW REGULATOR)

Next: !p487

UMBRELLA SYMBOL DISPLAYED (SUMMER MODE)

CHARACTERISTIC TEST FROM OBSERVATION BOILER PURGE / SELF CHECK

Next: p58

ST-BY SYMBOL DISPLAYED

CHARACTERISTIC TEST FROM OBSERVATION BOILER PURGE / SELF CHECK

Next: p60

PRESSURE ADDED (1 - 1 25 BAR) BUT FAULT CODE E10 STILL PRESENT

CHARACTERISTIC TEST FROM OBSERVATION SYSTEM PRESSURE INCORRECT (ADD PRESSURE)

Next: p625

PRESSURE GAUGE DOES NOT CHANGE WHEN PRESSURE ADDED

CHARACTERISTIC TEST FROM OBSERVATION SYSTEM PRESSURE INCORRECT (ADD PRESSURE)

Next: !p627

BOILER GOES TO FAULT CODE E02 BEFORE 85 °C

CHARACTERISTIC TEST FROM OBSERVATION CH - OVERHEAT OCCUR

Next: !p1437

TEMPERATURE EXCEEDS 88 °C & CONTINUES TO FIRE

CHARACTERISTIC TEST FROM OBSERVATION CH - OVERHEAT OCCUR

Next: !p908

26/03/2019 09:22:14 1902_1_50_1 01/04/2019 14:06:38

21/03/2019 10:57:43

Next: End

RESISTANCE GAS VALVE & HARNESS (E04 - E87 - E88)

REMOVE CONNECTOR X13 FROM THE PCB

Next: p1006, f1007

RESISTANCE GAS VALVE

DISCONNECT THE LEAD FROM THE GAS VALVE

Next: !p1008, !f1009

INFORMATION MENU (E08)

Next: !p1017, !f1014

INSPECTION PANEL CONTROL BUTTONS (E24)

GAIN ACCESS TO FACIA KEY PAD BUTTONS

Next: p1027, !f1028

DISCONNECT PUMP SPEED CONTROL CONNECTOR

REMOVE THE SPEED CONTROL ELECTRICAL CONNECTOR TO PUMP & MAKE SAFE

Next: p104, f1485

RESISTANCE OPTIONAL EXTERNAL SAFETY SENSOR (E46)

GAIN ACCESS TO TERMINAL BLOCK

Next: p1034, ?1133, ?1135

INSTALLATION TIGHTNESS TEST (E20)

Next: p1063, !f1041

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: !p1068, !f1069

RESET APPLIANCE - FAULT CODE (E45 - E73)

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p1073, f1107

DISCONNECT PUMP SPEED CONTROL CONNECTOR

REMOVE THE SPEED CONTROL ELECTRICAL CONNECTOR TO PUMP & MAKE SAFE

Next: p1079, f1080

RESISTANCE HARNESS PUMP - HIGH VOLTAGE

REMOVE HIGH VOLTAGE

Next: !p1081, !f1082

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: p1108, !f1109

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

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

Next: !p1115, !f1131

INSPECTION AIR IN HEAT EXCHANGER & SYSTEM (E61)

ENSURE BOILER IS COOL
ENSURE APPLIANCE AUTO AIR VENT IS OPEN (LOCATED PUMP MANIFOLD)

Next: p1141, !f1142

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

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

Next: !p1148, !f1149

PRESSURE GAS INLET (FAULT CODE)

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p1165, !f1166

RESISTANCE IGNITION LEAD

REMOVE ELECTRODE FROM SPARK GENERATOR & PULL BACK INSULATION AT ELECTRODE

Next: p1170, !f1171

PRESSURE GAS INLET - FAULT CODES GAS VALVE CONTROL

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p1179, !f1180

RESISTANCE IGNITION LEAD

REMOVE ELECTRODE FROM SPARK GENERATOR & PULL BACK INSULATION AT ELECTRODE

Next: p1187, !f1188

RESET APPLIANCE - FAULT CODE E98 - E99

REINSTATE POWER TO APPLIANCE AFTER 20 SECONDS HAS ELAPSED
ENSURE NO DEMANDS ARE PRESENT

Next: !p1203, !f1209

INSPECTION CONDENSATE PIPE (E96)

Next: p1223, !f1224

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

GAIN ACCESS TO HEAT EXCHANGER FLUEWAYS & BURNER
REFER TO ADAPT FOR GUIDANCE

Next: !p1231, ?1232, ?1234

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS (--)

REMOVE CONNECTOR X11 FROM THE PCB

Next: p1240, f1241

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: !p1242, !f1243

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: !p1246, !f1247

VOLTAGE MAINS INPUT - TERMINAL BLOCK

GAIN ACCESS TO TERMINAL BLOCK

Next: !p1264, f1265

FUSE FURTHER INVESTIGATION - PCB FUSE

THE INFORMATION PROV

Next: !p1270, !f1271

RESISTANCE FUSED SPUR

REMOVE FUSE FROM FUSED SPUR

Next: !p1266, f1267

FUSE FURTHER INVESTIGATION - FUSED SPUR

THE INFORMATION PROV

Next: !p1268, !f1269

RESISTANCE IGNITION LEAD

REMOVE ELECTRODE FROM SPARK GENERATOR & PULL BACK INSULATION AT ELECTRODE

Next: p131, !f132

OBSERVATION EXTERNAL CONTROLS & DHW INSTALLATION (E44)

ENSURE NO DEMANDS ARE PRESENT

Next: p1317, !f1318

OBSERVATION DISCONNECT ALPHA CLIMATIC CONTROL UNIT

DISCONNECT ALPHA CLIMATIC CONTROL UNIT FROM TERMINALS 44 & 41

Next: !p1330, !f1329

RESISTANCE TIMER/PROGRAMMER

GAIN ACCESS TO TIMER/PROGRAMMER TERMINALS

Next: !p1362, !f1363

RESISTANCE TIMER/PROGRAMMER

GAIN ACCESS TO TIMER/PROGRAMMER TERMINALS

Next: !p1365, !f1366

RESISTANCE TIMER/PROGRAMMER

GAIN ACCESS TO TIMER/PROGRAMMER TERMINALS

Next: !p1368, !f1369

OBSERVATION SYSTEM PRESSURE CORRECT (ADD PRESSURE)

Next: !p1372, !f1378

INSPECTION CONDENSATE PIPE

Next: p1383, !f1384

INSPECTION CONDENSATE PIPE

Next: p1405, !f1406

OBSERVATION DISPLAY DHW DEMAND

FLOW RATE SET @ 3 LITRES/MIN

Next: p1449, f1450

VOLTAGE FLOW SENSOR - DEMAND

{GAINPCBACS}
FLOW RATE SET @ 3 LITRES/MIN

Next: !p1451, f1452

VOLTAGE FLOW SENSOR - SUPPLY

Next: p1453, !f1454

OBSERVATION FAN RUNS (E16)

ENSURE DHW FLOW RATE

Next: p1470, f1471

VOLTAGE FAN - LOW VOLTAGE SUPPLY

{GAINPCBACS}
ENSURE ALL FAN CONNECTORS ARE FITTED CORRECTLY

Next: p1472, !f1473

RESISTANCE PUMP AND HARNESS (MAINS VOLTAGE)

REMOVE CONNECTOR X2 FROM THE PCB

Next: !p1481, f1482

RESISTANCE PUMP (MAINS VOLTAGE)

REMOVE MAINS ELECTRICAL CONNECTOR FROM PUMP ASSEMBLY

Next: !p1483, !f1484

VOLTAGE PUMP - MAINS SUPPLY AT PCB

{GAINPCBACS}

Next: p1486, !f1489

OBSERVATION HEAT EXCHANGER AIR FLOW - PRESSURE DIFFERENTIAL

REFER TO CUSTOMERS C

Next: !p173, f215

INSPECTION AIR INTAKE

Next: p216, !f217

INSPECTION AIR INTAKE

Next: p256, !f257

ISOLATE COLD FEED (BOILER)

ISOLATE COLD WATER FEED TO BOILER

Next: p29, !f30

VOLTAGE STEPPER MOTOR

{GAINPCBACS}
ENSURE NO DEMAND IS PRESENT

Next: !p1443, ?314, ?316

RESISTANCE STEPPER MOTOR

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

Next: !p322, !f323

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

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

Next: !p418, ?350, ?352

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

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

Next: !p430, ?426, ?428

VOLTAGE STEPPER MOTOR

{GAINPCBACS}
ENSURE NO DEMAND IS PRESENT

Next: !p1440, ?456, ?458

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: !p47, !f48

RESISTANCE STEPPER MOTOR

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

Next: !p462, !f463

DISCONNECT EXTERNAL CONTROLS

NO DEMANDS PRESENT

Next: !p50, f51

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: !p52, !f53

VOLTAGE EXTERNAL CONTROLS OUT (PCB)

Next: p529, !f528

VOLTAGE EXTERNAL CONTROLS IN (PCB)

{GAINPCBACS}

Next: !p535, f536

VOLTAGE EXTERNAL CONTROLS OUT (PCB)

Next: p539, !f538

VOLTAGE EXTERNAL CONTROLS IN (PCB)

{GAINPCBACS}

Next: !p549, f550

VOLTAGE EXTERNAL CONTROLS OUT (PCB)

Next: p551, !f552

VOLTAGE EXTERNAL CONTROLS OUT (PCB)

Next: p557, !f558

VOLTAGE EXTERNAL CONTROLS IN (PCB)

{GAINPCBACS}

Next: !p564, f565

VOLTAGE EXTERNAL CONTROLS OUT (PCB)

Next: p566, !f567

VOLTAGE EXTERNAL CONTROLS OUT (PCB)

Next: p572, !f573

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS (E05)

REMOVE CONNECTOR X11 FROM THE PCB

Next: p592, f593

RESISTANCE FLOW TEMPERATURE SENSOR

GAIN ACCESS TO FLOW

Next: !p594, !f595

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS (E06)

REMOVE CONNECTOR X10 FROM THE PCB

Next: p603, f600

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: !p601, !f602

OBSERVATION PRESSURE SYSTEM (E10)

Next: p608, f621

OBSERVATION PARAMETER SETTINGS (E12 - E15)

Next: !p1022, !f1023

OBSERVATION SYSTEM PRESSURE INCORRECT (ADD PRESSURE)

Next: !p622, ?624, ?626

RESISTANCE SWITCH SYSTEM PRESSURE

REMOVE 1X ELECTRICAL CONNECTOR FROM PRESSURE SWITCH

Next: !p631, !f1370

RESISTANCE SWITCH SYSTEM PRESSURE

REMOVE 1X ELECTRICAL CONNECTOR FROM PRESSURE SWITCH

Next: !p639, f1371

RESISTANCE RETURN TEMPERATURE SENSOR & HARNESS (E23)

REMOVE CONNECTOR X12 FROM THE PCB

Next: p642, f643

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM RETURN SENSOR

Next: !p644, !f645

OBSERVATION DHW INLET SERVICE VALVE

Next: p68, !f69

RESISTANCE FLUE TEMPERATURE SENSOR & HARNESS (E29)

REMOVE CONNECTOR X11 FROM THE PCB

Next: p745, f746

RESISTANCE FLUE TEMPERATURE SENSOR

REMOVE CONNECTOR FROM FLUE SENSOR
REMOVE FLUE SENSOR

Next: !p747, !f748

VOLTAGE MAINS INPUT - PCB (E37)

{GAINPCBACS}

Next: p785, f786

VOLTAGE MAINS INPUT - TERMINAL BLOCK

GAIN ACCESS TO TERMINAL BLOCK

Next: !p787, !f788

DISCONNECT PUMP SPEED CONTROL CONNECTOR (E60)

REMOVE THE SPEED CONTROL ELECTRICAL CONNECTOR TO PUMP & MAKE SAFE

Next: p793, f794

RESISTANCE HARNESS PUMP - HIGH VOLTAGE

REMOVE HIGH VOLTAGE

Next: !p795, !f796

VOLTAGE MAINS INPUT (E59)

GAIN ACCESS TO TERMINAL CONNECTION BLOCK

Next: p841, !f842

RESET APPLIANCE - FAULT CODE (E02)

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p854, f855

RESISTANCE SAFETY FLOW TEMPERATURE SENSOR & HARNESS (E74)

REMOVE CONNECTOR X11 FROM THE PCB

Next: p848, f849

RESISTANCE SAFETY FLOW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM FLOW SAFETY SENSOR

Next: !p850, !f851

RESISTANCE SAFETY FLOW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM FLOW SAFETY SENSOR

Next: !p936, !f857

DISCONNECT PUMP SPEED CONTROL CONNECTOR

REMOVE THE SPEED CONTROL ELECTRICAL CONNECTOR TO PUMP & MAKE SAFE

Next: p861, f862

RESISTANCE HARNESS PUMP - HIGH VOLTAGE

REMOVE HIGH VOLTAGE

Next: !p863, !f864

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

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

Next: !p878, !f899

RESET APPLIANCE - FAULT CODE (E03 - E47)

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: p942, f943

RESISTANCE FLUE TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: !p944, !f945

INSPECTION CONDENSATE PIPE

Next: p970, !f971

TEMPERATURE DIFFERENTIAL PRIMARY HEAT EXCHANGER

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

Next: !p983, !f984

DISCONNECT PUMP SPEED CONTROL CONNECTOR

REMOVE THE SPEED CONTROL ELECTRICAL CONNECTOR TO PUMP & MAKE SAFE

Next: p998, f999

RESISTANCE HARNESS PUMP - HIGH VOLTAGE

REMOVE HIGH VOLTAGE

Next: !p1000, !f1001

RESET APPLIANCE - APPLY DEMAND

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: !p1010, !f1011

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1029, !f1030

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1036, !f1037

VOLTAGE PUMP - CONTROL VOLTAGE (PWM)

{GAINPCBACS}
ENSU

Next: !p118, !f113

RESISTANCE IGNITION LEAD

REMOVE ELECTRODE FROM SPARK GENERATOR & PULL BACK INSULATION AT ELECTRODE

Next: p1064, !f1065

RESET APPLIANCE - APPLY DEMAND

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: !p1066, f1067

OBSERVATION PUMP RUNS

Next: p1077, f1078

PUMP LIMPET

Next: p1085, !f1086

VOLTAGE PUMP - CONTROL VOLTAGE (PWM)

{GAINPCBACS}
ENSU

Next: !p1083, !f1084

INSPECTION AIR IN HEAT EXCHANGER

ENSURE BOILER IS COOL
ENSURE AUTO AIR VENT IS OPEN (LOCATED PUMP MANIFOLD)

Next: p1087, !f1088

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: p1089, !f1090

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM RETURN SENSOR

Next: p1154, !f1092

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM RETURN SENSOR

Next: !p1110, !f1111

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

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

Next: p1113, f1114

OBSERVATION CH - FAULT CODE REOCCURS

Next: !p1130, !f1129

OBSERVATION SERVICE VALVE FLOW & RETURN

Next: p1143, !f1144

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: p1145, !f1152

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

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

Next: p1146, f1147

OBSERVATION CH - FAULT CODE REOCCURS

Next: !p1150, !f1151

RESISTANCE SAFETY FLOW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM FLOW SAFETY SENSOR

Next: p1112, !f1162

RESET APPLIANCE - APPLY DEMAND

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: !p1167, f1169

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p1174, !f1173

FULL CALIBRATION - AIR / GAS RATIO

Next: !p1175, !f1176

INSPECTION FLUE

Next: p1181, !f1182

OBSERVATION BURNER EARTHED CORRECTLY

GAIN ACCESS TO INNER COMBUSTION CHAMBER

Next: p1183, !f1184

RESET APPLIANCE - APPLY DEMAND

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: !p1185, f1186

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p1191, !f1200

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

GAIN ACCESS TO HEAT EXCHANGER FLUEWAYS & BURNER
REFER TO ADAPT FOR GUIDANCE

Next: p1197, ?1193, ?1195

FULL CALIBRATION - AIR / GAS RATIO

Next: !p1198, !f1199

INSPECTION AIR INTAKE

Next: p1225, !f1226

INSPECTION FLUE

Next: p1227, !f1228

OBSERVATION HEAT EXCHANGER AIR FLOW - PRESSURE DIFFERENTIAL

REFER TO CUSTOMERS C

Next: p1229, f1230

RESET APPLIANCE - APPLY DEMAND

ENSURE NO DEMANDS ARE PRESENT
ENSURE BOILER IS COOL

Next: !p1236, !f1237

INSPECTION CONDENSATE PIPE

Next: p281, !f282

RESISTANCE DHW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X10 FROM THE PCB

Next: p1244, f1245

OBSERVATION BOILER PARAMETERS

Next: p1248, !f1249

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1250, !f1251

RESISTANCE FUSE - PCB

REMOVE FUSE FROM PCB

Next: p1254, f1255

DISCONNECT LOW VOLTAGE COMPONENTS

REMOVE ELECTRICAL CO

Next: p1288, !f1289

INSPECTION CONDENSATE PIPE

Next: p127, !f128

OBSERVATION SPARKING OCCURS

Next: p129, f130

RECONNECT LOW VOLTAGE COMPONENTS

RECONNECT ELECTRICAL

Next: !p1290, ?1291, ?1293, ?1295

PRESSURE GAS INLET - IGNITION

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p135, !f136

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: !p133, !f134

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p1319, !f1320

CANCEL DISPLAY MODE

Next: !p1323, !f1324

INSPECTION EXTERNAL BYPASS

Next: p443, !f1352

OBSERVATION GAS VALVE OPENS

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

Next: p137, f172

INSPECTION FLUE

Next: p271, !f1360

INSPECTION AIR INTAKE

Next: p147, !f148

OBSERVATION BOILER OUTPUT PARAMETERS

Next: p1380, !f1391

OBSERVATION HEAT EXCHANGER AIR FLOW - PRESSURE DIFFERENTIAL

REFER TO CUSTOMERS C

Next: !p1381, f1382

INSPECTION AIR INTAKE

Next: p1385, !f1386

INSPECTION FLUE

Next: p1387, !f1388

INSPECTION FAN ASSEMBLY

REMOVE GAS MIXER FROM FAN ASSEMBLY

Next: !p1389, !f1390

OBSERVATION BOILER OUTPUT PARAMETERS

Next: p1393, !f1400

PUMP LIMPET

Next: p1394, !f1395

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: p1396, !f1397

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM RETURN SENSOR

Next: !p1398, !f1399

OBSERVATION BOILER OUTPUT PARAMETERS

Next: p1402, !f1419

OBSERVATION HEAT EXCHANGER AIR FLOW - PRESSURE DIFFERENTIAL

REFER TO CUSTOMERS C

Next: !p1403, f1404

INSPECTION AIR INTAKE

Next: p1407, !f1408

INSPECTION FLUE

Next: p1409, !f1410

INSPECTION FAN ASSEMBLY

REMOVE GAS MIXER FROM FAN ASSEMBLY

Next: p1411, !f1412

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

GAIN ACCESS TO HEAT EXCHANGER FLUEWAYS & BURNER
REFER TO ADAPT FOR GUIDANCE

Next: !p1413, ?1415, ?1417

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: p475, !f1436

OBSERVATION BOILER OUTPUT PARAMETERS

Next: !p1446, !f1447

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: p1457, !f1458

RESISTANCE HARNESS FLOW SENSOR

REMOVE CONNECTOR FROM DHW FLOW SENSOR

Next: !p1455, !f1456

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: p1459, !f1460

RESISTANCE FAST IMMERSION TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM FAST IMMERSION TEMPERATURE SENSOR

Next: p1461, !f1462

VOLTAGE FAN - LOW VOLTAGE SUPPLY

{GAINPCBACS}
ENSURE ALL FAN CONNECTORS ARE FITTED CORRECTLY

Next: p1463, !f1464

VOLTAGE FAN - CONTROL VOLTAGE (PWM)

Next: p1465, !f1466

RESISTANCE HARNESS FAN - LOW VOLTAGE

REMOVE LOW VOLTAGE ELECTRICAL CONNECTOR TO FAN

Next: !p1467, !f1468

INSPECTION FLUE

Next: p149, !f150

RESISTANCE HARNESS FAN - LOW VOLTAGE

REMOVE LOW VOLTAGE ELECTRICAL CONNECTOR TO FAN

Next: !p1478, !f1479

VOLTAGE FAN - CONTROL VOLTAGE (PWM)

Next: p1474, !f1475

RESISTANCE HARNESS FAN - LOW VOLTAGE

REMOVE LOW VOLTAGE ELECTRICAL CONNECTOR TO FAN

Next: !p1476, !f1477

RESISTANCE HARNESS PUMP - HIGH VOLTAGE

REMOVE HIGH VOLTAGE

Next: !p1487, !f1488

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: p151, !f152

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

GAIN ACCESS TO HEAT EXCHANGER FLUEWAYS & BURNER
REFER TO ADAPT FOR GUIDANCE

Next: !p153, ?154, ?156

OBSERVATION DISPLAY CH OR DHW SYMBOL

ENSURE NO DEMANDS

Next: p43, f28

INSPECTION FLUE

Next: p223, !f219

INSPECTION FAN ASSEMBLY

REMOVE GAS MIXER FROM FAN ASSEMBLY

Next: !p229, !f227

INSPECTION CONDENSATE PIPE

Next: p233, !f234

PRESSURE GAS INLET

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p245, !f236

VOLTAGE MAINS INPUT - PCB

{GAINPCBACS}

Next: p1252, f1253

OBSERVATION HEAT EXCHANGER AIR FLOW - PRESSURE DIFFERENTIAL

REFER TO CUSTOMERS C

Next: p1353, f255

INSPECTION FLUE

Next: p278, !f259

INSPECTION BURNER / HEAT EXCHANGER FLUEWAYS

GAIN ACCESS TO HEAT EXCHANGER FLUEWAYS & BURNER
REFER TO ADAPT FOR GUIDANCE

Next: !p277, ?273, ?275

INSPECTION FAN ASSEMBLY

REMOVE GAS MIXER FROM FAN ASSEMBLY

Next: !p279, !f280

PRESSURE GAS INLET - IGNITION

ATTACH U GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p283, !f284

RESISTANCE IGNITION LEAD

REMOVE ELECTRODE FROM SPARK GENERATOR & PULL BACK INSULATION AT ELECTRODE

Next: p285, !f286

INSPECTION ELECTRODE

REMOVE ELECTRODE ASSEMBLY FROM BOILER

Next: !p287, !f288

DISCONNECT FLOW SENSOR (DHW)

REMOVE ELECTRICAL CONNECTOR TO DHW FLOW SENSOR & MAKE SAFE

Next: p38, !f32

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: p326, !f327

OBSERVATION STEPPER MOTOR OPERATION (DHW)

REMOVE DIVERTER VALVE STEPPER MOTOR & PLACE IN A SAFE POSITION WHERE IT CAN BE OBSERVED

Next: !p310, f311

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: !p324, !f325

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: p419, !f420

OBSERVATION SERVICE VALVE FLOW & RETURN

Next: p1331, !f444

INSPECTION EXPANSION VESSEL PRESSURE

DRAIN BOILER PRIMARY SYSTEM WATER

Next: !p466, !f467

RESISTANCE STEPPER MOTOR AND HARNESS

REMOVE CONNECTOR X14 FROM THE PCB

Next: !p320, f321

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: p657, !f329

PUMP LIMPET

Next: p346, !f331

OBSERVATION DHW OUTPUT (MIXER TAP PASSING)

Next: p291, !f344

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

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

Next: p347, f348

GAS RATE

Next: p1444, ?358, ?360

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: !p41, !f42

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: p715, !f422

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

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

Next: !p423, f424

OBSERVATION INTERNAL OR EXTERNAL TIMER/PROGRAMMER FITTED

Next: p524, f534

OBSERVATION FLOW TEMPERATURE DISPLAYED (FROST PROTECTION)

ENSURE NO DEMANDS

Next: p44, f49

PUMP LIMPET

Next: p421, !f440

TEMPERATURE FLOW PIPE (FROST PROTECTION)

ATTACH FGA TEMPERATURE SENSOR TO PRIMARY HEAT EXCHANGER FLOW CONNECTION

Next: !p45, f46

OBSERVATION STEPPER MOTOR OPERATION (CH)

REMOVE DIVERTER VALVE STEPPER MOTOR & PLACE IN A SAFE POSITION WHERE IT CAN BE OBSERVED

Next: p445, f454

OBSERVATION DIVERTER VALVE SPINDLE

REMOVE DIVERTER VALVE STEPPER MOTOR

Next: p447, !f448

PUMP LIMPET

Next: p450, !f451

INSPECTION BY-PASS VALVE

ENSURE BOILER IS COO

Next: !p452, !f501

RESISTANCE STEPPER MOTOR AND HARNESS

REMOVE CONNECTOR X14 FROM THE PCB

Next: !p460, f461

OBSERVATION DHW INLET SERVICE VALVE

Next: p473, !f474

OBSERVATION COLD WATER SUPPLY

Next: p1421, !f476

OBSERVATION PARAMETER A1 (FLOW REGULATOR VALVE SETTING)

Next: p481, !f482

VOLTAGE STEPPER MOTOR (FLOW REGULATOR)

{GAINPCBACS}
ENSURE NO DEMAND IS PRESENT

Next: p489, ?484, ?486

RESISTANCE STEPPER MOTOR AND HARNESS (FLOW REGULATOR)

REMOVE CONNECTOR X15 FROM THE PCB

Next: !p492, !f499

INSPECTION DHW FLOW COMPONENTS

DRAIN THE DOMESTIC H

Next: !p490, !f491

VOLTAGE EXTERNAL CONTROLS IN (PCB)

{GAINPCBACS}

Next: !p525, f526

RESISTANCE TIMER/PROGRAMMER HARNESS

GAIN ACCESS TO TERMINAL BLOCK

Next: !p530, !f544

RESISTANCE TIMER/PROGRAMMER HARNESS

GAIN ACCESS TO TERMINAL BLOCK

Next: !p540, f1361

FAULT CODES

Next: !p55, !f56

OBSERVATION INTERNAL OR EXTERNAL TIMER/PROGRAMMER FITTED

Next: p547, f548

VOLTAGE EXTERNAL CONTROLS IN (PCB)

{GAINPCBACS}

Next: !p555, f556

RESISTANCE TIMER/PROGRAMMER HARNESS

GAIN ACCESS TO TERMINAL BLOCK

Next: !p553, f1364

RESISTANCE TIMER/PROGRAMMER HARNESS

GAIN ACCESS TO TERMINAL BLOCK

Next: !p559, !f560

OBSERVATION INTERNAL OR EXTERNAL TIMER/PROGRAMMER FITTED

Next: p562, f563

VOLTAGE EXTERNAL CONTROLS IN (PCB)

{GAINPCBACS}

Next: !p570, f571

RESISTANCE TIMER/PROGRAMMER HARNESS

GAIN ACCESS TO TERMINAL BLOCK

Next: !p568, f1367

RESISTANCE TIMER/PROGRAMMER HARNESS

GAIN ACCESS TO TERMINAL BLOCK

Next: !p574, !f575

CANCEL SUMMER MODE

Next: !p61, !f66

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p596, !f597

CANCEL ST-BY MODE (POWER ON)

Next: !p63, !f65

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p604, !f605

RESISTANCE SWITCH SYSTEM PRESSURE & HARNESS

REMOVE CONNECTOR X11 FROM PCB

Next: !p636, f638

RESISTANCE SWITCH SYSTEM PRESSURE & HARNESS

REMOVE CONNECTOR X11 FROM PCB

Next: !p635, f630

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p646, !f647

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM RETURN SENSOR

Next: p328, !f714

OBSERVATION COLD WATER SUPPLY

Next: p70, !f71

INSPECTION DHW FLOW COMPONENTS

DRAIN THE DOMESTIC H

Next: !p74, !f73

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM RETURN SENSOR

Next: p431, !f740

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p749, !f750

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p789, !f790

VOLTAGE PUMP - CONTROL VOLTAGE (PWM)

{GAINPCBACS}
ENSU

Next: !p797, !f798

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p843, !f844

RESET APPLIANCE - FAULT CODE

ENSURE NO DEMANDS ARE PRESENT

Next: !p852, !f853

OBSERVATION PUMP RUNS

Next: p858, f860

PUMP LIMPET

Next: p912, !f868

VOLTAGE PUMP - CONTROL VOLTAGE (PWM)

{GAINPCBACS}
ENSU

Next: !p865, !f866

RESISTANCE FLOW TEMPERATURE SENSOR & HARNESS

REMOVE CONNECTOR X11 FROM THE PCB

Next: p869, !f870

RESISTANCE RETURN TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTOR FROM RETURN SENSOR

Next: p871, !f872

RESISTANCE DHW TEMPERATURE SENSOR

REMOVE ELECTRICAL CONNECTIONS FROM DHW TEMPERATURE SENSOR

Next: p875, !f911

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

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

Next: p903, f877

OBSERVATION CH - OVERHEAT OCCUR

Next: p904, ?905, ?907

OBSERVATION PUMP OVERRUN

Next: !p940, !f910

INSPECTION AIR IN HEAT EXCHANGER

ENSURE BOILER IS COOL
ENSURE AUTO AIR VENT IS OPEN (LOCATED PUMP MANIFOLD)

Next: p867, !f932

OBSERVATION PUMP RUNS

Next: p946, f997

PUMP LIMPET

Next: p948, !f949

INSPECTION AIR IN HEAT EXCHANGER

ENSURE BOILER IS COOL
ENSURE AUTO AIR VENT IS OPEN (LOCATED PUMP MANIFOLD)

Next: p967, !f979

OBSERVATION HEAT EXCHANGER AIR FLOW - PRESSURE DIFFERENTIAL

REFER TO CUSTOMERS C

Next: p980, f969

INSPECTION AIR INTAKE

Next: p972, !f973

INSPECTION FLUE

Next: p974, !f975

INSPECTION FAN ASSEMBLY

REMOVE GAS MIXER FROM FAN ASSEMBLY

Next: !p976, !f977

TEMPERATURE DIFFERENTIAL PLATE HEAT EXCHANGER

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

Next: p981, f982

OBSERVATION FAULT CODE E03 /E47 OCCURS

Next: !p995, !f1004

VOLTAGE PUMP - CONTROL VOLTAGE (PWM)

{GAINPCBACS}
ENSU

Next: !p1002, !f1003

System Information

  • Total Tests: 712
  • 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