XSol Diagnostic System

ARISTON E-SYSTEM

GLOBALLY REPLACED

Next: &219, *

NO FAULT FOUND

Next: nff

OBSERVATION FAN RUNS CH DEMAND

ENSURE CH SYSTEM IS COOL
EXTERNAL CONTROLS CALLING FOR HEAT

Next: &292, f2184

OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: &152, ?70, ?74, ?76

OPERATION CH

CH THERMOSTAT SET TO MAX

Next: &356, ?155, ?157, ?768

ARISTON E-SYSTEM - CASE REMOVAL INSTRUCTIONS

Next: &1092, !f220

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &51, !f265

OBSERVATION PUMP OVERRUN

Next: &nff, !f355

OBSERVATION PUMP RUNS

Next: &69, f293

OPERATION DHW

DHW DEMAND

Next: &268, ?816, ?818

HEADER FOR FUSE INVESTIGATION

OK TO BE BLANK

Next: &nff, f934

HEADER FOR OVERHEAT FAULT CODE 101

OK TO BE BLANK

Next: &nff, f948

HEADER FOR INSUFFICIENT CIRCULATION FAULT CODE 103 - 107 AND 1P1 1P2 1P3

OK TO BE BLANK

Next: &nff, f954

HEADER FOR CH FLOW TEMP PROBE ERROR FAULT CODE 110

OK TO BE BLANK

Next: &nff, f956

HEADER FOR LOW PRESSURE FAULT CODE 108

OK TO BE BLANK

Next: &nff, f2132

HEADER FOR FLOOR THERMOSTAT CONTACT OPEN FAULT CODE 116

OK TO BE BLANK

Next: &nff, f974

HEADER FOR EEPROM ERROR AND MAIN PCB ERROR

OK TO BE BLANK

Next: &nff, f982

HEADER FOR COMMUNICATION ERROR FAULT CODE 302

OK TO BE BLANK

Next: &nff, f1078

HEADER FOR FLAME DETECTED GAS VALVE CLOSED FAULT CODE 502

OK TO BE BLANK

Next: &nff, f992

HEADER FOR THERMOFUSE OPEN FAULT CODE 610

OK TO BE BLANK

Next: &nff, f1000

HEADER FOR FAN ERROR AND INSUFFICIENT FAN SPEED

OK TO BE BLANK

Next: &nff, f1006

HEADER FOR TOO MANY RESETS ERROR CODE 304

OK TO BE BLANK

Next: &nff, f1060

OBSERVATION APPLIANCE SELF CHECK

NO DEMANDS

Next: &1990, ?1097, ?1101, ?1157

HEADER FOR CH RETURN TEMP PROBE ERROR CODE 112

OK TO BE BLANK

Next: &nff, f1166

HOW TO ACTIVATE TEST FUNCTION

Next: &nff, !f1798

USER DISPLAY GUIDE

Next: &264, !f1991

HEADER FOR NOT APPLICABLE ERROR CODES

OK TO BE BLANK

Next: &nff, !f2203

ERROR CODE 610

WIRING - VOLTAGE - LOW

Next: End

ERROR CODE 612

WIRING - VOLTAGE - LOW

Next: End

ERROR CODE 612

FAN ASSEMBLY

Next: End

ERROR CODE 612

PCB - MAIN

Next: End

ERROR CODE 304

PCB - MAIN

Next: End

ERROR CODE 302

PCB - MAIN

Next: End

ERROR CODE 302

WIRING - DISPLAY

Next: End

ERROR CODES 1

ONE DIRECTION

Next: End

NO DISPLAY

FUSE (FUSED SPUR)

Next: End

TEMP PROBE ERROR CODE

PROBE - TEMPERATURE - CH (RETURN)

Next: End

TEMP PROBE ERROR CODE

PROBE - TEMPERATURE - CH (FLOW)

Next: End

ERROR CODE 101

PROBE - TEMPERATURE - CH (FLOW)

Next: End

OVERHEAT

TEMPERATURE PROBE FITMENT

Next: End

ERROR CODE 101

PROBE - TEMPERATURE - CH (RETURN)

Next: End

CIRCULATION ERROR CODES

TEMPERATURE PROBE FITMENT

Next: End

CIRCULATION ERROR CODES

PROBE - TEMPERATURE - CH (FLOW)

Next: End

CIRCULATION ERROR CODES

PROBE - TEMPERATURE - CH (RETURN)

Next: End

CIRCULATION ERROR CODES

SYSTEM PRESSURE

Next: End

DOES NOT IGNITE

FLUE

Next: End

BURNER DOES NOT IGNITE

EXCHANGER

Next: End

PUMP NOT RUNNING

CABLE - PUMP

Next: End

PUMP DOES NOT RUN

CAPACITOR (CABLE - PUMP 2V 5M (CN10))

Next: End

REACHES TEMP RADS COOL

TAP - SERVICE

Next: End

REACHES TEMP RADS COOL

BY-PASS

Next: End

REACHES TEMP RADS COOL

FILTER

Next: End

BOILER TO TEMP RADS COOL

PUMP

Next: End

INSUFFICIENT CIRCULATION FAULT CODE

TAP - SERVICE

Next: End

CIRCULATION ERROR CODES

BY-PASS

Next: End

CIRCULATION ERROR CODES

FILTER

Next: End

CIRCULATION ERROR CODES

PUMP

Next: End

FAILS TO REACH SET TEMP

SYSTEM PRESSURE

Next: End

OVERHEAT

SYSTEM PRESSURE

Next: End

IGNITES BUT DOES NOT ESTABLISH

SILENCER

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

FLUE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

VENTURI

Next: End

DOES NOT ESTABLISH

EXCHANGER

Next: End

ERROR CODE 502

GAS VALVE

Next: End

FAULT CODE 502

GAS VALVE

Next: End

ERROR CODE 116

HARNESS 6 WIRE

Next: End

FAULT CODE 116

HARNESS 6 WIRE

Next: End

TEST FUNCTION ACTIVATION

ONE DIRECTION

Next: End

BURNER DOES NOT IGNITE 1

PCB - MAIN

Next: End

IGNITES BUT DOES NOT ESTABLISH

CABLE - ELECTRODE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

ELECTRODE - IONISATION

Next: End

OVERHEAT

PUMP

Next: End

OVERHEAT FAULT CODE

TAP - SERVICE

Next: End

OVERHEAT

BY-PASS

Next: End

OVERHEAT

FILTER

Next: End

OVERHEAT

PCB - MAIN

Next: End

FAULT CODE 101

PCB - MAIN

Next: End

OVERHEAT

GAUGE - PRESSURE

Next: End

BURNER DOES NOT IGNITE

CABLE - IGNITOR / GAS VALVE & PCB - MAIN

Next: End

BURNER DOES NOT IGNITE

GAS VALVE & PCB - MAIN

Next: End

BURNER DOES NOT IGNITE 1

CABLE - IGNITOR / GAS VALVE

Next: End

BURNER DOES NOT IGNITE 2

GAS VALVE

Next: End

FUSE INVESTIGATION

CABLE - IGNITOR / GAS VALVE

Next: End

FUSE INVESTIGATION

GAS VALVE

Next: End

NO POWER TO PUMP OVERHEAT

PCB - MAIN

Next: End

PUMP NOT RUNNING OVERHEAT

CABLE - PUMP

Next: End

PUMP DOES NOT RUN OVERHEAT

CAPACITOR (CABLE - PUMP 2V 5M (CN10))

Next: End

PUMP POOR CIRC

PCB - MAIN

Next: End

PUMP NOT RUNNING POOR CIRC

CABLE - PUMP

Next: End

PUMP DOES NOT RUN POOR CIRC

CAPACITOR (CABLE - PUMP 2V 5M (CN10))

Next: End

USER DISPLAY GUIDE

ONE DIRECTION

Next: End

FIRES WITH NO DEMAND

PROBE - TEMPERATURE - CH (FLOW)

Next: End

FIRES WITH NO DEMAND

PROBE - TEMPERATURE - CH (RETURN)

Next: End

BLANK DISPLAY

PCB - MAIN

Next: End

BLANK DISPLAY

WIRING - DISPLAY

Next: End

NO DISPLAY

FUSE 250V 2A

Next: End

FAULT CODE 108

SYSTEM PRESSURE

Next: End

FAULT CODE 108

GAUGE - PRESSURE

Next: End

FAULT CODE 108

HARNESS LOW WATER PRESSURE SWITCH

Next: End

FAILS TO REACH SET TEMP

PROBE - TEMPERATURE - CH (FLOW)

Next: End

FAILS TO REACH SET TEMP

PROBE - TEMPERATURE - CH (RETURN)

Next: End

FAILED GAS RATE

SILENCER

Next: End

FAILED GAS RATE

FLUE

Next: End

FAILED GAS RATE

TRAP

Next: End

FAILED GAS RATE

BURNER

Next: End

FAILED GAS RATE

EXCHANGER

Next: End

FAN NOT RUNNING

WIRING - VOLTAGE - LOW

Next: End

NOT RUNNING WITH DEMAND

FAN ASSEMBLY

Next: End

FAN NOT RUNNING

PROBE - TEMPERATURE - CH (FLOW)

Next: End

CASE REMOVAL

ONE DIRECTION

Next: End

FAN NOT RUNNING

PROBE - TEMPERATURE - CH (RETURN)

Next: End

CH DEMAND NOT RECOGNISED

HARNESS 6 WIRE

Next: End

NOT APPLICABLE ERROR CODES

PCB - MAIN (NOT APPLICABLE ERROR CODES)

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

GAS PRESSURE INLET

Next: End

RADS FAIL TO REACH TEMP

PARAMETER MAX CH POWER

Next: End

FAILS TO REACH SET TEMP SPINDLE SNAPPED

KNOB

Next: End

FOR TYPE DIAG PROCEDURE

ONE DIRECTION

Next: End

NO PUMP OVERRUN

PCB - MAIN

Next: End

BURNER IGNITES BUT BAFFLES

TRAP

Next: End

BURNER IGNITES BUT BAFFLES

SILENCER

Next: End

BURNER DOES NOT ESTABLISH

TRAP

Next: End

BURNER DOES NOT IGNITE

TRAP

Next: End

BURNER DOES NOT IGNITE

PCB - MAIN

Next: End

BURNER DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

CABLE - IGNITOR / GAS VALVE

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BURENR DOES NOT IGNITE 1

SILENCER

Next: End

BURNER DOES NOT IGNITE 1

BURNER

Next: End

BURNER DOES NOT IGNITE 1

EXCHANGER

Next: End

BURNER IGNITES BUT BAFFLES

FLUE

Next: End

BURNER IGNITES BUT BAFFLES

EXCHANGER

Next: End

BURNER IGNITES BUT BAFFLES

BURNER

Next: End

BURNER IGNITES BUT BAFFLES

VENTURI

Next: End

BURNER DOES NOT IGNITE 1

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE

VENTURI

Next: End

PUMP

PCB - MAIN

Next: End

BURNER ESTABLISHES THEN BAFFLES

GAS PRESSURE INLET

Next: End

REACHES TEMP RADS COOL

SYSTEM PRESSURE

Next: End

EXCESSIVE SYSTEM PRESSURE RISE

VESSEL - EXPANSION

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

GAS PRESSURE INLET

Next: End

FUSE INVESTIGATION

PUMP

Next: End

FUSE INVESTIGATION

SPARK GENERATOR

Next: End

ERROR CODE 301

EEPROM KEY

Next: End

ERROR CODE 610

PCB - MAIN

Next: End

ERROR CODE 610

THERMAL FUSE

Next: End

FAULT CODE 612

FAN ASSEMBLY

Next: End

ERROR CODE 303 RESETS CONFIRM BOILER OP

ONE DIRECTION

Next: End

ERROR CODE 302

PCB - DISPLAY

Next: End

ERROR CODES

ONE DIRECTION

Next: End

NO DISPLAY

Next: End

FUSE FURTHER INVESTIGATION

ONE DIRECTION

Next: End

APPLIANCE FIRES WITH NO DEMAND

FROST PROTECTION

Next: End

TEMP PROBE ERRPR CODE

PCB - MAIN

Next: End

TEMP PROBE ERROR CODE

WIRING - VOLTAGE - LOW

Next: End

ERROR CODE 110

PCB - MAIN

Next: End

TEMP PROBE FAULT CODE

WIRING - VOLTAGE - LOW

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

SEIZED

PUMP

Next: End

BOILER UP TO TEMP RADS COOL

SYSTEM BLOCKAGE

Next: End

CIRCULATION ERROR CODES

PCB - MAIN

Next: End

CIRCULATION ISSUES

SYSTEM BLOCKAGE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

BURNER

Next: End

INCORRECT GAP TO BURNER

ELECTRODE - IONISATION

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

PCB - MAIN

Next: End

ERROR CODE 502

PCB - MAIN

Next: End

ERROR CODE 116

UNDERFLOOR HEATING THERMOSTAT LINK

Next: End

ERROR CODE 116

UNDERFLOOR HEATING THERMOSTAT

Next: End

OVERHEAT

SYSTEM BLOCKAGE

Next: End

OVERHEAT FAULT CODE

OVERHEAT

Next: End

BURNER DOES NOT IGNITE 2

PCB - MAIN

Next: End

SEIZED OVERHEAT

PUMP

Next: End

SEIZED POOR CIRC

PUMP

Next: End

CH ON WITH NO DEMAND

Next: End

FIRES WITH NO DEMAND 1

PCB - MAIN

Next: End

BLANK DISPLAY

PCB - DISPLAY

Next: End

FUSE FURTHER INVESTIGATION 1

ONE DIRECTION

Next: End

FAULT CODE 108

PCB - MAIN

Next: End

ERROR CODE 108

SWITCH - PRESSURE - LOW

Next: End

FAULT CODE 108

PUMP MANIFOLD

Next: End

FAULT CODE 108

SWITCH - PRESSURE - LOW

Next: End

BOILER TEMP LOW SYSTEM TEMP LOW

PCB - MAIN

Next: End

FAILED GAS RATE

VENTURI

Next: End

FAILED GAS RATE

FAN ASSEMBLY

Next: End

FAILED GAS RATE

GAS VALVE

Next: End

NO CH DEMAND

Next: End

FAN DOES NOT RUN

FAN ASSEMBLY

Next: End

FAN NOT RUNNING

PCB - MAIN

Next: End

RADS NOT REACHING TEMP

PCB - DISPLAY

Next: End

BURNER DOES NOT IGNITE

GAS PRESSURE INLET

Next: End

BURNER DOES NOT IGNITE

SPARK GENERATOR

Next: End

BURNER DOES NOT IGNITE

BURNER

Next: End

DOES NOT IGNITE

ELECTRODE - IGNITION

Next: End

BURNER DOES NOT IGNITE 1

GAS VALVE

Next: End

BURNER IGNITES BUT BAFFLES

GAS VALVE

Next: End

BURNER DOES NOT IGNITE 1

VENTURI

Next: End

BURNER DOES NOT IGNITE

FAN ASSEMBLY

Next: End

NO HW OPERATION

Next: End

OPERATION DHW

Next: End

EXCESSIVE PRESSURE RISE

PIPE - EXPANSION VESSEL

Next: End

FUSE INVESTIGATION

CABLE - PUMP

Next: End

FUSE INVESTIGATION

PCB - MAIN (FUSE BLOWN)

Next: End

FUSE INV

CABLE - IGNITOR / GAS VALVE

Next: End

FAULT CODE 116

PCB - MAIN

Next: End

ERROR CODE 116

PCB - MAIN

Next: End

ERROR CODE 301

PCB - MAIN

Next: End

ERROR CODE SHOWN

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1098

LED DOES NOT ILLUMINATE

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1102

APPLIANCE FIRES WITH NO DEMAND

CHARACTERISTIC TEST FROM OBSERVATION APPLIANCE SELF CHECK

Next: p1158

APPLIANCE REACHES TEMP RADIATORS REMAIN COOL OR DO NOT HEAT

CHARACTERISTIC TEST FROM OPERATION CH

Next: p156

APPLIANCE AND RADIATORS FAIL TO REACH SET TEMPERATURE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p771

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER AND SPARK GAP

Next: !p1768

IONISATION GAP UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION BURNER AND IONISATION GAP

Next: !p1770

PUMP MANIFOLD BLOCKED

CHARACTERISTIC TEST FROM INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

Next: !p2157

LOW WATER PRESSURE SWITCH BLOCKED

CHARACTERISTIC TEST FROM INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

Next: !p2159

AIR GAS MIXER RESTRICTED AND / OR BLOCKED / IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p2176

FAN RESTRICTED AND / OR BLOCKED / IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p2178

NO PRESSURE DROP OBSERVED

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: p496

INLET PRESSURE LOW OR DIES AWAY DURING IGNITION

CHARACTERISTIC TEST FROM PRESSURE GAS INLET DROP

Next: !p498

BURNER RESTRICTED AND / OR IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION BURNER AND SPARK GAP

Next: !p521

SPARK GAP UNSATISFACTORY

CHARACTERISTIC TEST FROM INSPECTION BURNER AND SPARK GAP

Next: !p523

AIR GAS MIXER RESTRICTED AND / OR BLOCKED / IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p609

FAN RESTRICTED AND / OR BLOCKED / IN POOR CONDITION

CHARACTERISTIC TEST FROM INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

Next: !p611

BURNER DOES NOT IGNITE

CHARACTERISTIC TEST FROM OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: p445

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: p75

BURNER IGNITES AND ESTABLISHES BUT BAFFLES OR IS NOISY

CHARACTERISTIC TEST FROM OBSERVATION DOES BURNER IGNITE AND ESTABLISH

Next: p396

EXCESSIVE SYSTEM PRESSURE RISE

CHARACTERISTIC TEST FROM OPERATION CH

Next: p878

APPLIANCE DOES NOT RESPOND TO DHW DEMAND

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p817

DHW OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM OPERATION DHW

Next: !p819

01/12/2020 10:58:37 2011_1_50_1 04/01/2021 10:58:51

02/12/2020 10:48:00

Next: End

RESISTANCE THERMOFUSE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: !p1001, f1002

RESISTANCE HARNESS THERMOFUSE

REMOVE CONNECTOR CN23 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE THERMOFUSE

Next: !p1003, !f1004

RESISTANCE HARNESS FAN

REMOVE CONNECTOR CN23 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FAN

Next: p1007, !f1008

RESET APPLIANCE - ERROR CODE TOO MANY RESETS IN 15 MIN

Next: !p1061, !f1062

VOLTAGE TO DISPLAY PCB

REMOVE DISPLAY HARNESS CONNECTOR FROM THE MAIN PCB AND MAKE SAFE

Next: p1079, !f1080

RESISTANCE FUSE (FUSED SPUR)

REMOVE FUSE FROM FUSED SPUR

Next: !p1105, f1106

FUSE FURTHER INVESTIGATION (FUSED SPUR)

Next: !p1107, !f1108

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: !p1167, f1168

RESISTANCE RETURN TEMPERATURE PROBE

REMOVE THE LEADS FROM THE RETURN TEMPERATURE PROBE (BLUE LEADS)

Next: !p1169, !f1170

RESISTANCE FLOW TEMPERATURE PROBE

REMOVE THE LEADS FROM THE FLOW TEMPERATURE PROBE (RED LEADS)

Next: !p1173, !f1174

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p1596, !f1597

RESISTANCE 6 WIRE HARNESS

REMOVE 6 WIRE CONNECTOR FROM THE PCB

Next: !p1788, !f1789

RESISTANCE 6 WIRE HARNESS

REMOVE 6 WIRE CONNECTOR FROM THE PCB

Next: !p1791, !f1792

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p1928, !f1929

VOLTAGE PUMP AT PCB

REMOVE CONNECTOR CN09 (PUMP CABLE) FROM THE PCB AND MAKE SAFE

Next: p1977, !f1978

VOLTAGE PUMP AT PCB

REMOVE CONNECTOR CN09 (PUMP CABLE) FROM THE PCB AND MAKE SAFE

Next: p1984, !f1985

DISCONNECT EXTERNAL CONTROLS

REMOVE ALL EXTERNAL CONTROL WIRING CONNECTIONS AND MAKE SAFE
ENSURE NO DEMANDS ARE PRESENT

Next: !p2117, f2118

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p2119, !f2120

FUSE FURTHER INVESTIGATION (PCB FUSE)

Next: !p2130, !f2131

OBSERVATION SYSTEM PRESSURE

Next: p2133, !f2134

RESISTANCE LOW WATER PRESSURE SWITCH HARNESS

REMOVE CONNECTOR CN12 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE WATER PRESSURE SWITCH

Next: p2152, !f2153

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p2167, !f2168

BYPASS EXTERNAL CONTROLS

DISCONNECT EXTERNAL

Next: !p2185, f2186

RESISTANCE 6 WIRE HARNESS

REMOVE 6 WIRE CONNECTOR FROM THE PCB

Next: p2190, !f2201

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p2197, !f2198

INSPECTION CH CONTROL SPINDLE

REMOVE CH TEMPERATURE CONTROL KNOB

Next: !p2231, !f2232

VOLTAGE PUMP AT PCB

REMOVE CONNECTOR CN09 (PUMP CABLE) FROM THE PCB AND MAKE SAFE

Next: p655, !f656

RESISTANCE GAS VALVE HARNESS

REMOVE THE 4 WAY CONNECTOR FROM THE PCB
REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p1943, !f1944

VOLTAGE SPARK GENERATOR AT PCB

REMOVE THE LEAD FROM THE SPARK GENERATOR AND MAKE SAFE

Next: p506, !f507

RESISTANCE PUMP AND HARNESS FOR FUSE INVESTIGATION

REMOVE CONNECTOR CN09 FROM THE PCB

Next: p935, f936

RESISTANCE PUMP FOR FUSE INVESTIGATION

REMOVE PUMP COVER AND DISCONNECT ELECTRICAL CONNECTOR

Next: !p937, !f938

RESISTANCE SPARK GENERATOR FOR FUSE INVESTIGATION

DISCONNECT ELECTRICAL CONNECTOR FROM THE SPARK GENERATOR

Next: !p945, !f946

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p1283, !f1297

OBSERVATION TEMPERATURE PROBES CORRECTLY FITTED

Next: p1372, !f1373

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: !p1171, f1172

OBSERVATION UNDERFLOOR HEATING

Next: p975, f976

RESISTANCE UNDERFLOOR HEATING THERMOSTAT LINK

REMOVE 6 WIRE CONNECTOR FROM THE PCB

Next: !p977, f1787

INSPECTION EEPROM KEY

Next: !p983, !f984

INSTALLATION TIGHTNESS TEST

Next: p1776, !f1778

RESISTANCE FAN

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p1009, !f1010

VOLTAGE FAN DEMAND

Next: !p1011, !f1012

RESISTANCE HARNESS DISPLAY PCB

DISCONNECT THE DISPL

Next: !p1086, !f1091

ERROR CODES

Next: !p1099, !f1100

VOLTAGE MAINS POWER INPUT AT PCB

Next: p1103, f1104

RESISTANCE FUSE PCB

REMOVE FUSE FROM PCB

Next: p2124, f2129

TEMPERATURE FLOW

ATTACH A TEMPERATURE

Next: !p1159, f2111

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p1284, !f1285

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p1298, !f1309

OBSERVATION SYSTEM PRESSURE

Next: p1692, !f1732

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p1374, !f1375

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p1376, !f1377

OBSERVATION SYSTEM PRESSURE

Next: p1378, !f1379

OBSERVATION PUMP RUNS

Next: p1380, f1983

PUMP LIMPET

Next: p1593, !f1602

INSPECTION FLUE

Next: !p1518, !f1519

CAPACITANCE PUMP

MULTIMETER SET TO CA

Next: !p1523, !f1524

PUMP LIMPET

Next: p1587, !f1592

OBSERVATION SYSTEM PRESSURE

Next: p800, !f812

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p2204, !f2228

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p1588, !f1589

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p1590, !f1591

TEMPERATURE DIFFERENTIAL CH

ATTACH A TEMPERATURE

Next: !p1594, f1595

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p1598, !f1599

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p1600, !f1601

INSPECTION CH CONTROL KNOB OPERATION

Next: p158, f2230

OBSERVATION SYSTEM PRESSURE RISE

Next: p1919, !f1938

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p1759, !f1760

INSPECTION FLUE

Next: p1761, !f1762

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p1763, !f1764

INSPECTION BURNER AND IONISATION GAP

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p1765, ?1767, ?1769

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p1771, !f1772

PRESSURE STANDING RETURN

ATTACH PRESSURE GAUG

Next: !p1779, !f1780

RESISTANCE IONISATION CABLE

REMOVE IONISATION LEAD FROM CN04 ON PCB
DISCONNECT IONISATION LEAD AT THE INLINE CONNECTOR

Next: p540, !f1893

OBSERVATION PUMP RUNS

Next: p1920, f1976

PUMP LIMPET

Next: p1924, !f1925

TEMPERATURE DIFFERENTIAL CH

ATTACH A TEMPERATURE

Next: p1926, f1927

OBSERVATION RUN APPLIANCE TO TEMPERATURE

ATTACH A TEMPERATURE

Next: p1934, !f1935

INSPECTION INTERNAL BYPASS

APPLIANCE DRAINED AN

Next: p1930, !f1931

INSPECTION CH FILTER

APPLIANCE DRAINED AN

Next: !p1932, !f1933

OBSERVATION PUMP OVERRUN FOR OVERHEAT

Next: !p1936, !f1937

RESISTANCE GAS VALVE

REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: !p1945, !f1946

RESISTANCE GAS VALVE

REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p528, !f1965

RESISTANCE GAS VALVE FOR FUSE INVESTIGATION

REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p939, !f1975

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR CN09 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTION FROM THE PUMP ASSEMBLY

Next: p1979, !f1980

CAPACITANCE PUMP

MULTIMETER SET TO CA

Next: !p1981, !f1982

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR CN09 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTION FROM THE PUMP ASSEMBLY

Next: p1986, !f1987

CAPACITANCE PUMP

MULTIMETER SET TO CA

Next: !p1988, !f1989

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: !p2121, !f2122

VOLTAGE TO DISPLAY PCB

REMOVE DISPLAY HARNESS CONNECTOR FROM THE MAIN PCB AND MAKE SAFE

Next: p2125, !f2126

RESISTANCE HARNESS DISPLAY PCB

DISCONNECT THE DISPL

Next: !p2127, !f2128

OBSERVATION SYSTEM PRESSURE RISE

Next: p2135, !f2136

RESISTANCE LOW WATER PRESSURE SWITCH AND HARNESS

REMOVE CONNECTOR CN12 FROM THE PCB

Next: !p2150, f2151

INSPECTION WATER PRESSURE SWITCH AND MANIFOLD

APPLIANCE DRAINED AN

Next: !p2154, ?2156, ?2158

RESISTANCE FLOW TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p2161, !f2162

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p2163, !f2164

APPLIANCE OUTPUT

SET APPLIANCE TO 100% OUTPUT

Next: !p2165, f2166

INSPECTION FLUE

Next: p2169, !f2170

INSPECTION CONDENSATE PIPE

Next: p2171, !f2172

INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p2173, ?2175, ?2177

INSPECTION BURNER

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p2179, !f2180

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p2181, !f2182

RESISTANCE HARNESS FAN

REMOVE CONNECTOR CN23 FROM THE PCB
DISCONNECT THE CONNECTOR FROM THE FAN

Next: p2191, !f2192

RESISTANCE FAN

REMOVE CONNECTOR CN23 FROM THE PCB

Next: p2193, !f2194

VOLTAGE FAN DEMAND

Next: !p2195, f2196

RESISTANCE RETURN TEMPERATURE PROBE AND HARNESS

REMOVE CONNECTOR CN23 FROM THE PCB

Next: !p2199, !f2200

OBSERVATION MAX CH POWER

ENSURE NO DEMANDS

Next: p2160, !f2229

INSPECTION CONDENSATE PIPE

Next: p77, !f410

INSPECTION FLUE

Next: p585, !f593

INSPECTION CONDENSATE PIPE

Next: p472, !f473

VOLTAGE GAS VALVE AT PCB

Next: p479, f499

PRESSURE GAS INLET DROP

ATTACH PRESSURE GAUGE TO GAS INLET PRESSURE TEST POINT

Next: p503, ?495, ?497

INSPECTION FLUE

Next: p526, !f527

OBSERVATION SPARKING OCCURS

DISCONNECT THE IGNIT

Next: p504, f505

RESISTANCE IGNITION ELECTRODE AND LEAD

REMOVE THE IGNITION ELECTRODE FROM THE BURNER DOOR
DISCONNECT LEAD AT THE SPARK GENERATOR

Next: p515, !f616

RESISTANCE HARNESS SPARK GENERATOR

REMOVE 4 WAY CONNECTOR FROM THE PCB
DISCONNECT THE ELECTRICAL LEAD FROM THE SPARK GENERATOR

Next: p511, !f514

RESISTANCE IGNITION ELECTRODE AND LEAD

REMOVE THE IGNITION ELECTRODE FROM THE BURNER DOOR
DISCONNECT LEAD AT THE SPARK GENERATOR

Next: !p512, !f513

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p517, !f623

INSPECTION BURNER AND SPARK GAP

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p519, ?520, ?522

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p1517, !f1520

RESISTANCE GAS VALVE HARNESS

REMOVE THE 4 WAY CONNECTOR FROM THE PCB
REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p1950, !f1964

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p532, !f533

INSPECTION AIR / GAS MIXER AND FAN ASSEMBLY

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p534, ?608, ?610

INSPECTION BURNER

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p536, !f537

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p538, !f539

RESISTANCE IONISATION ELECTRODE

REMOVE IONISATION EL

Next: p1758, !f1894

INSPECTION AIR / GAS MIXER

REMOVE BURNER DOOR ASSEMBLY C/W FAN AND GAS VALVE

Next: p600, !f605

INSPECTION PRIMARY HEAT EXCHANGER FLUEWAYS

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: !p597, !f598

INSPECTION BURNER

THE BURNER DOOR ASSEMBLY SHOULD ALREADY BE REMOVED FROM PREVIOUS TEST

Next: p596, !f604

RESISTANCE HARNESS PUMP

REMOVE CONNECTOR CN09 FROM THE PCB
DISCONNECT THE ELECTRICAL CONNECTION FROM THE PUMP ASSEMBLY

Next: p1521, !f1522

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p90, !f91

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS VALVE PRESSURE INLET TEST POINT

Next: p78, !f79

OBSERVATION SYSTEM PRESSURE

Next: p1657, !f1685

INSPECTION SILENCER

REMOVE THE SILENCER

Next: p422, !f428

INSPECTION FLOW AND RETURN ISOLATION VALVES

Next: p1543, !f1552

INSPECTION EXPANSION VESSEL PRESSURE

APPLIANCE DRAINED AND DISCHARGED

Next: !p879, !f880

INSPECTION CONDENSATE PIPE

Next: p92, !f464

VOLTAGE RECTIFICATION AT PCB

REMOVE THE IONISATION LEAD FROM CONNECTOR CN04 AND MAKE SAFE
ENSURE NO DEMAND

Next: p1831, !f1851

RESISTANCE GAS VALVE HARNESS FOR FUSE INVESTIGATION

REMOVE THE 4 WAY CONNECTOR FROM THE PCB
REMOVE THE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p1968, !f1974

RESISTANCE SPARK GENERATOR AND HARNESS FOR FUSE INVESTIGATION

REMOVE THE 4 WAY CONNECTOR FROM THE PCB

Next: !p943, f944

RESISTANCE UNDERFLOOR HEATING THERMOSTAT

REMOVE 6 WIRE CONNECTOR FROM THE PCB

Next: !p979, f1790

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