XSol Diagnostic System

BAXI ECOBLUE, 2 SERIES, 4 SERIES, MAINECO, ASSURE HEAT, ULTRA HEAT, TITANIUM

GLOBALLY REPLACED

Next: &1, *

NO FAULT FOUND

Next: nff

CASE REMOVAL

Next: &1545, !f2

POWER UP SELF TEST

CH TEMPERATURE CONTROL SET TO OFF POSITION
ENSURE APPLIANCE IS COOL

Next: &513, ?7, ?9, ?12, ?1547

OBSERVATION FAN RUNS

ENSURE APPLIANCE IS COOL

Next: &269, f1402

CH OPERATION

CH TEMPERATURE CONTROL SET TO MAX

Next: &1108, ?538, ?540, ?542, ?729

DHW OPERATION

HOT WATER DEMAND

Next: &nff, ?609, ?611

OBSERVATION BURNER IGNITION & ESTABLISH

ENSURE APPLIANCE IS COOL

Next: &44, ?270, ?276, ?516

FAULT CODE - SENSORS

NOT USED

Next: &nff, f386

FAULT CODE - MISCELLANEOUS

NOT USED

Next: &nff, f506

FAULT CODE - PARAMETER FAULT

NOT USED

Next: &nff, f499

FAULT CODE FAN FAULT

NOT USED

Next: &nff, !f1423

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &1116, !f514

STATUS CODE - TEMPERATURE PROTECTION

NOT USED

Next: &nff, f685

STATUS CODE - SHUTDOWN INPUT

NOT USED

Next: &nff, f657

STATUS CODE - COMMUNICATION FAULT

NOT USED

Next: &nff, f670

STATUS CODE - MISCELLANEOUS

NOT USED

Next: &nff, f675

FAULT CODE - OVERHEAT

NOT USED

Next: &nff, f869

OBSERVATION EXTERNAL FROST PROTECTION

ENSURE THERE ARE NO DEMANDS FOR HEATING OR HOT WATER

Next: &29, !f1103

OBSERVATION BOILER MODULATION

ATTACH TEMPERATURE CLAMP TO FLOW PIPE JUST ABOVE HEAT EXCHANGER

Next: &45, f1109

OBSERVATION SYSTEM PUMP RUNNING

CH TEMPERATURE CONTROL SET TO OFF POSITION
LOCATE & GAIN ACCESS TO SYSTEM PUMP

Next: &1102, f1117

INFORMATION RESETTING APPLIANCE

Next: &3, !f1546

BOILER NOISY

FLUE

Next: End

FROST PROTECTION

Next: End

MODULATION

KIT - SENSOR

Next: End

MODULATION 2

KIT - SENSOR

Next: End

MODULATION

CONTROLLER - USER INTERACTION

Next: End

BURNER DOES NOT IGNITE AND EST

COMBUSTION CONTROL UNIT

Next: End

BURNER DOES NOT IGNITE & EST

FLUE

Next: End

BURNER DOES NOT IGNITE & EST 2

SET - ELECTRODES C/W SCREW & GASKET

Next: End

BURNER DOES NOT IGNITE & EST

BURNER MESH C/W GASKET

Next: End

BURNER DOES NOT IGNITE & EST

AIR INTAKE

Next: End

PUMP DOES NOT RUN

Next: End

PUMP DOES NOT RUN 2

Next: End

PUMP DOES NOT RUN 3

Next: End

BOILER SYS COOL

GAS INLET PRESSURE

Next: End

BOILER SYS COOL

KIT - SENSOR

Next: End

BOILER SYS COOL 2

KIT - SENSOR

Next: End

BOILER SYS COOL

CONTROLLER - USER INTERACTION

Next: End

FAULT CODE PARAMETER

HARNESS - CABLE 24V HE

Next: End

FAULT CODE PARAMETER

UNIT - PARAMETER (UNIT COMBUSTION CONTROL)

Next: End

BURNER IGNITION NO APS

KIT - SENSOR

Next: End

BURNER IGNITION NO APS

FAULT CODE RESET - OVERHEAT - FLUE STAT

Next: End

FAULT CODE OVERHEAT

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT

SWITCH - PRESSURE C/W O-RING

Next: End

FAULT CODE OVERHEAT 12

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 8

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 4

SWITCH - PRESSURE C/W O-RING

Next: End

FAULT CODE OVERHEAT 9

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 2

FLUE

Next: End

FAULT CODE OVERHEAT 3

SWITCH - PRESSURE C/W O-RING

Next: End

FAULT CODE OVERHEAT 10

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 11

KIT - SENSOR

Next: End

AIR INTAKE

Next: End

BURNER IGNITION 2

COMBUSTION CONTROL UNIT

Next: End

BURNER IGNITION

FLUE

Next: End

BURNER IGNITION

SET - ELECTRODES C/W SCREW & GASKET

Next: End

BURNER IGNITION 2

BURNER MESH C/W GASKET

Next: End

FAN RUNS

KIT - SENSOR

Next: End

FAN RUNS 2

KIT - SENSOR

Next: End

FAN RUNS 2

CONTROLLER - USER INTERACTION

Next: End

BOILER SYS COOL

FLUE

Next: End

FAN FAULT CODE

COMBUSTION CONTROL UNIT

Next: End

PARAMETER FAULT CODE

COMBUSTION CONTROL UNIT

Next: End

BOILER NOISY

COMBUSTION SEALS

Next: End

BOILER NOISY

HEAT ENGINE FLUEWAYS

Next: End

BOILER NOISY

BURNER MESH C/W GASKET

Next: End

BOILER SYS COOL

HEAT ENGINE FLUEWAYS

Next: End

BURNER DOES NOT IGNITE & EST

HEAT ENGINE FLUEWAYS

Next: End

BURNER IGNITION

HEAT ENGINE FLUEWAYS

Next: End

BURNER IGNITION 2

FLUE

Next: End

FAULT CODES

Z REDIRECTION

Next: End

GAS VALVE GONE NO POINT CHECKING ANYTHING ELSE

COMBUSTION CONTROL UNIT

Next: End

FUSE FURTHER INVESTIGATION NOT POSSIBLE INFORMATION

FUSE FURTHER INVESTIGATION

Next: End

INFORMATION RESETTING APPLIANCE

Z REDIRECTION

Next: End

CHIMNEY SWEEP ILLUMINATED SOLID

BUTTONS STUCK IN

Next: End

POWER UP SELF TEST

Next: End

CASE OFF

Z REDIRECTION

Next: End

HARNESS DTP - MAINS

CABLE ASSEMBLY / HARNESS - MAINS

Next: End

BURNER IGNITION

TRAP - C/W ELBOW - CONDENSATE

Next: End

BURNER IGNITION

GAS INLET PRESSURE

Next: End

BOILER NOISY

GAS INLET PRESSURE

Next: End

BOILER NOISY

TRAP - C/W ELBOW - CONDENSATE

Next: End

BOILER NOISEY

AIR INTAKE

Next: End

FAULT CODE SENSORS

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE 2

KIT - SENSOR

Next: End

FAULT CODE

KIT - SENSOR

Next: End

STATUS CODE

Z REDIRECTION

Next: End

FAULT CODE MISCELLANEOUS

UNIT - PARAMETER (UNIT COMBUSTION CONTROL)

Next: End

DIAGNOSTIC PROCEDURE

Z REDIRECTION

Next: End

BURNER IGNITION

KIT - SENSOR

Next: End

BURNER IGNITION

SWITCH - PRESSURE C/W O-RING

Next: End

BURNER IGNITION

FAULT CODE RESET - OVERHEAT - FLUE STAT

Next: End

BOILER UPTO TEMP RADS COOL 3

Next: End

FAULT CODE OVERHEAT

Next: End

FAULT CODE MISC

FAULT/STATUS CODE MISCELLANEOUS

Next: End

STATUS CODE SHUTDWN 2

CONTROLLER - USER INTERACTION

Next: End

STAUS CODE COMMS

FAULT/STATUS CODE MISCELLANEOUS

Next: End

STATUS CODE MISC

COMBUSTION CONTROL UNIT

Next: End

BURNER IGNITION 2

SWITCH - PRESSURE C/W O-RING

Next: End

STATUS CODE TEMP

Next: End

STATUS CODE TEMP 2

PUMP

Next: End

STATUS CODE TEMP 5

KIT - SENSOR

Next: End

STATUS CODE TEMP 3

KIT - SENSOR

Next: End

STATUS CODE TEMP

KIT - SENSOR

Next: End

STATUS CODE TEMP 2

KIT - SENSOR

Next: End

STATUS CODE TEMP 2

Next: End

STATUS CODE TEMP 4

KIT - SENSOR

Next: End

STATUS CODE TEMP 6

KIT - SENSOR

Next: End

STATUS CODE TEMP 3

Next: End

PWR UP SELF TEST

COMBUSTION CONTROL UNIT

Next: End

LIMPET TEST

PUMP

Next: End

BOILER UPTO TEMP RADS COOL

Next: End

FAULT CODE OVERHEAT 2

PUMP

Next: End

FAULT CODE OVERHEAT 4

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 3

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 2

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT

FLUE

Next: End

FAULT CODE OVERHEAT 2

SWITCH - PRESSURE C/W O-RING

Next: End

STATUS CODE TEMP 4

PUMP

Next: End

STATUS CODE TEMP 7

KIT - SENSOR

Next: End

STATUS CODE TEMP 11

KIT - SENSOR

Next: End

STATUS CODE TEMP 8

KIT - SENSOR

Next: End

STATUS CODE TEMP 10

KIT - SENSOR

Next: End

STATUS CODE TEMP 4

Next: End

STATUS CODE TEMP 9

KIT - SENSOR

Next: End

STATUS CODE TEMP 12

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 2

Next: End

FAULT CODE OVERHEAT

PUMP

Next: End

FAULT CODE OVERHEAT 7

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 6

KIT - SENSOR

Next: End

FAULT CODE OVERHEAT 5

KIT - SENSOR

Next: End

BOILER NOISY

INTERFACE - FLUE C/W SEAL

Next: End

BOILER NOISY

INTERFACE SUMP

Next: End

MODULATION

COMBUSTION CONTROL UNIT

Next: End

PUMP DOES NOT RUN

PUMP

Next: End

BURNER DOES NOT IGNITE & EST 2

COMBUSTION CONTROL UNIT

Next: End

BURNER DOES NOT IGNITE & EST

SET - ELECTRODES C/W SCREW & GASKET

Next: End

BURNER DOES NOT IGNITE & EST

INTERFACE - FLUE C/W SEAL

Next: End

BURNER DOES NOT IGNITE & EST

INTERFACE SUMP

Next: End

BURNER DOES NOT IGNITE EST 3

COMBUSTION CONTROL UNIT

Next: End

BOILER SYS COOL

COMBUSTION CONTROL UNIT

Next: End

PARAMETER FAULT

FAULT CODE RESET

Next: End

BURNER IGNITION NO APS

HARNESS - CABLE 24V HE

Next: End

BURNER DOES NOT IGNITE

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE OVERHEAT

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE OVERHEAT

HARNESS - CABLE 24V HE

Next: End

FAULT CODE OVERHEAT 8

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE OVERHEAT NO APS

HARNESS - CABLE 24V HE

Next: End

FAULT CODE OVERHEAT 6

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE OVERHEAT 2

HARNESS - CABLE 24V HE

Next: End

FAULT CODE OVERHEAT 7

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE OVERHEAT 2 NO APS

HARNESS - CABLE 24V HE

Next: End

FAULT CODE OVERHEAT 4

COMBUSTION CONTROL UNIT

Next: End

BURNER IGNITION

INTERFACE - FLUE C/W SEAL

Next: End

BURNER IGNITION

INTERFACE SUMP

Next: End

BURNER IGNITION 3

COMBUSTION CONTROL UNIT

Next: End

FAN RUNS

COMBUSTION CONTROL UNIT

Next: End

BOILER SYS COOL

INTERFACE - FLUE C/W SEAL

Next: End

BOILER SYS COOL

INTERFACE SUMP

Next: End

BOILER SYS COOL 2

COMBUSTION CONTROL UNIT

Next: End

MISCELLANEOUS FAULT CODE

COMBUSTION CONTROL UNIT

Next: End

BOILER NOISY 2

COMBUSTION CONTROL UNIT

Next: End

2 RED FLASHES FAULT CODE FOR NO REASON

COMBUSTION CONTROL UNIT

Next: End

CHIMNEY ILLUMINATED SOLID

CONTROLLER - USER INTERACTION

Next: End

FAULT CODES 2

Z REDIRECTION

Next: End

PWR UP SELF TEST

CONTROLLER - USER INTERACTION

Next: End

FAULT CODE SENSOR

FAULT CODE RESET

Next: End

FAULT CODE

HARNESS - CABLE 24V HE

Next: End

FAULT CODE 2

HARNESS - CABLE 24V HE

Next: End

STATUS CODE 2

Z REDIRECTION

Next: End

FAULT CODE MISCELLANEOUS

FAULT CODE RESET

Next: End

BURNER IGNITION

HARNESS - CABLE 24V HE

Next: End

DHW OPERATION

Next: End

DHW OPERATION

Next: End

STATUS CODE SHUT DWN

FAULT CODE RESET

Next: End

STATUS CODE SHUTDWN

CONTROLLER - USER INTERACTION

Next: End

STATUS CODE SHUTDWN

BL TERMINALS - LINK

Next: End

STATUS CODE SHUTDWN

Next: End

STATUS CODE COMS

FAULT CODE RESET

Next: End

STATUS CODE COMMS

COMBUSTION CONTROL UNIT

Next: End

STATUS CODE MISC

FAULT CODE RESET

Next: End

STATUS CODE TEMP 2

COMBUSTION CONTROL UNIT

Next: End

STATUS CODE TEMP

COMBUSTION CONTROL UNIT

Next: End

STATUS CODE TEMP

STATUS CODE RESET - TEMP PROTECTION

Next: End

STATUS CODE TEMP 3

COMBUSTION CONTROL UNIT

Next: End

BOILER UPTO TEMP RADS COOL

Next: End

FAULT CODE OVERHEAT

FAULT CODE RESET - OVERHEAT - FLUE STAT

Next: End

FAULT CODE OVERHEAT 3

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE OVERHEAT 2

COMBUSTION CONTROL UNIT

Next: End

STATUS CODE TEMP 4

COMBUSTION CONTROL UNIT

Next: End

STATUS CODE TEMP 2

STATUS CODE RESET - TEMP PROTECTION

Next: End

STATUS CODE TEMP 6

COMBUSTION CONTROL UNIT

Next: End

STATUS CODE TEMP 5

COMBUSTION CONTROL UNIT

Next: End

STATUS CODE TEMP

PUMP

Next: End

FAULT CODE OVERHEAT 2

FAULT CODE RESET - OVERHEAT - FLUE STAT

Next: End

FAULT CODE OVERHEAT 5

COMBUSTION CONTROL UNIT

Next: End

FAULT CODE OVERHEAT 3

PUMP

Next: End

FLUE INTERFACE RESTRICTED AND/OR BLOCKED

Next: !p1020

SUMP RESTRICTED AND/OR BLOCKED

Next: !p1022

FAULT CODE (CHIMNEY SWEEP LED FLASHING RED)

CHARACTERISTIC TEST FROM POWER UP SELF TEST

Next: p13

FLUE INTERFACE RESTRICTED AND/OR BLOCKED

Next: !p1216

SUMP RESTRICTED AND/OR BLOCKED

Next: !p1218

FLUE INTERFACE RESTRICTED AND/OR BLOCKED

Next: !p1389

SUMP RESTRICTED AND/OR BLOCKED

Next: !p1391

FLUE INTERFACE RESTRICTED AND/OR BLOCKED

Next: !p1415

SUMP RESTRICTED AND/OR BLOCKED

Next: !p1417

CHIMNEY SWEEP LED ILLUMINATED (SOLID RED OR GREEN)

CHARACTERISTIC TEST FROM POWER UP SELF TEST

Next: p1548

BURNER DOES NOT IGNITE & ESTABLISH

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p271

BURNER IGNITES BUT IS BAFFLING AND/OR NOISY

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p277

FAULT CODE 2 FLASHES RED OCCURS

CHARACTERISTIC TEST FROM OBSERVATION BURNER IGNITION & ESTABLISH

Next: p1291

BOILER AND RADIATORS DO NOT REACH TEMPERATURE

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1233

BOILER UP TO TEMPERATURE, RADIATORS DO NOT HEAT SUFFICIENTLY

CHARACTERISTIC TEST FROM CH OPERATION

Next: p550

BOILER SHUTS DOWN OVERHEAT FAULT - 2 FLASHES RED OCCURS

CHARACTERISTIC TEST FROM CH OPERATION

Next: p543

DHW OPERATION UNSATISFACTORY

CHARACTERISTIC TEST FROM DHW OPERATION

Next: !p610

DHW DEMAND NOT RECOGNISED

CHARACTERISTIC TEST FROM DHW OPERATION

Next: !p612

NO CONNECTIONS - BL TERMINALS

CHARACTERISTIC TEST FROM INSPECTION BL TERMINALS - USER INTERFACE

Next: !p665

EXTERNAL CONNECTIONS - BL TERMINALS

CHARACTERISTIC TEST FROM INSPECTION BL TERMINALS - USER INTERFACE

Next: p667

CONTROL PANEL LEDS DO NOT ILLUMINATE

CHARACTERISTIC TEST FROM POWER UP SELF TEST

Next: p8

BOILER GOES TO TEMPERATURE PROTECTION - FLOW TEMPERATURE BELOW 80°C

CHARACTERISTIC TEST FROM TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

Next: p722

BOILER FLOW TEMPERATURE EXCEEDS 85°C AND STILL FIRED

CHARACTERISTIC TEST FROM TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

Next: p705

BOILER SHUTS DOWN TEMP PROTECTION - 1 FLASH GREEN OCCURS EVERY 3 SECONDS

CHARACTERISTIC TEST FROM CH OPERATION

Next: p762

BOILER GOES TO OVERHEAT - FLOW TEMPERATURE BELOW 80°C

CHARACTERISTIC TEST FROM TEMPERATURE - RUN BOILER TO MAXIMUM

Next: p1370

BOILER FLOW TEMPERATURE EXCEEDS 85°C AND STILL FIRED

CHARACTERISTIC TEST FROM TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

Next: p828

BOILER GOES TO TEMPERATURE PROTECTION - FLOW TEMPERATURE BELOW 80°C

CHARACTERISTIC TEST FROM TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

Next: p851

BOILER FLOW TEMPERATURE EXCEEDS 85°C AND STILL FIRED

CHARACTERISTIC TEST FROM TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

Next: p853

STATUS CODE (CHIMNEY SWEEP LED FLASHING GREEN)

CHARACTERISTIC TEST FROM POWER UP SELF TEST

Next: p10

BOILER GOES TO OVERHEAT - FLOW TEMPERATURE BELOW 80°C

CHARACTERISTIC TEST FROM TEMPERATURE - RUN BOILER TO MAXIMUM

Next: p1361

BOILER FLOW TEMPERATURE EXCEEDS 85°C AND STILL FIRED

CHARACTERISTIC TEST FROM TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

Next: p915

26/02/2020 12:56:49 2002_1_50_1 12/03/2020 13:47:29

02/03/2020 14:30:49

Next: End

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p1110, !f1111

VOLTAGE PUMP AT PUMP

GAIN ACCESS TO PUMPS ELECTRICAL CONNECTIONS

Next: !p1118, !f1230

VOLTAGE RECTIFICATION AT PCB

{GAINPCBACS}
CH TEMPERATURE CONTROL SET TO OFF POSITION

Next: p1162, f1163

DISCONNECT SPARK ELECTRODE AT SPARK GENERATOR

DISCONNECT SPARK ELECTRODE LEAD FROM SPARK GENERATOR

Next: !p1166, !f1167

INSPECTION AIR INTAKE MANIFOLD

REMOVE THE AIR INTAKE MANIFOLD

Next: p1210, !f1229

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS PRESSURE INLET TEST POINT LOCATED UNDERNEATH THE BOILER

Next: p1409, !f1237

RESISTANCE SAFETY CIRCUIT AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: p1304, f1305

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: !p1306, !f1307

OBSERVATION AIR PRESSURE SWITCH FITTED

DOES THE APPLIANCE HAVE AN AIR PRESSURE SWITCH FITTED?

Next: p1318, f1325

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: p1321, !f1322

RESISTANCE SAFETY CIRCUIT AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: !p1326, f1327

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: !p1328, !f1329

OBSERVATION AIR PRESSURE SWITCH FITTED

DOES THE APPLIANCE HAVE AN AIR PRESSURE SWITCH FITTED?

Next: p1338, f1345

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: p1341, !f1342

RESISTANCE SAFETY CIRCUIT AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: !p1346, f1347

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: !p1348, !f1349

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p1403, !f1404

RESISTANCE THERMISTOR FLOW AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: p393, f388

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: !p391, !f392

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p398, !f399

INSPECTION PARAMETER UNIT

Next: p1273, !f1284

RESET APPLIANCE - FAULT/STATUS CODE DISPLAYED

CH TEMPERATURE CONTROL SET TO OFF

Next: !p507, f508

INSPECTION PARAMETER UNIT

Next: p509, !f510

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: p520, !f521

RESET APPLIANCE - STATUS CODE DISPLAYED

CH TEMPERATURE CONTROL SET TO OFF

Next: !p660, f659

INSPECTION BL TERMINALS - USER INTERFACE

GAIN ACCESS TO THE USER CONTROL INTERFACE PCB, (USE INSULATION MAT AS REQUIRED)

Next: !p663, ?664, ?666

RESET APPLIANCE - FAULT/STATUS CODE DISPLAYED

CH TEMPERATURE CONTROL SET TO OFF

Next: !p671, f672

INSPECTION WIRING HARNESS CONNECTIONS

{GAINPCBACS}

Next: !p673, !f674

RESET APPLIANCE - STATUS CODE DISPLAYED

CH TEMPERATURE CONTROL SET TO OFF

Next: !p676, !f678

OBSERVATION SYSTEM WATER

GAIN ACCESS TO SYSTEM AS REQUIRED

Next: p686, !f687

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p717, !f718

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p844, !f845

VOLTAGE PUMP AT PUMP

GAIN ACCESS TO PUMPS ELECTRICAL CONNECTIONS

Next: !p866, !f1231

OBSERVATION SYSTEM WATER

GAIN ACCESS TO SYSTEM AS REQUIRED

Next: p898, !f871

VOLTAGE PUMP AT PUMP

GAIN ACCESS TO PUMPS ELECTRICAL CONNECTIONS

Next: !p927, !f1232

STATUS CODES

Next: !p42, !f43

INSPECTION FLUE

Next: p1426, !f1002

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: p1112, !f1113

RESISTANCE POTENTIOMETER - CH TEMPERATURE

DISCONNECT USER INTE

Next: !p1114, !f1115

OBSERVATION BURNER HEARD TO IGNITE

Next: p1379, f1155

VOLTAGE RECTIFICATION AT PCB - IGNITION

{GAINPCBACS}

Next: !p1164, f1209

INSPECTION FLUE

Next: p1211, !f1212

INSPECTION INTERFACE AND SUMP

Next: p1213, ?1215, ?1217

INSPECTION ELECTRODE IGNITION

REMOVE SPARK ELECTRODE ASSEMBLY FROM THE BOILER

Next: p1219, !f1220

INSPECTION HEAT EXCHANGER FLUEWAYS

REMOVE THE COMBUSTION CONTROL UNIT AND GAIN
ACCESS TO THE HEAT EXCHANGER FLUEWAYS

Next: p1221, !f1491

INSPECTION BURNER

Next: !p1227, !f1228

GAS RATE

Next: p1234, f1235

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p1251, !f1252

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: p1253, !f1254

RESISTANCE POTENTIOMETER - CH TEMPERATURE

DISCONNECT USER INTE

Next: !p1255, !f1256

RESISTANCE HARNESS PARAMETER UNIT

REMOVE CONNECTOR X5 FROM THE PCB
DISCONNECT ELECTRICAL CONNECTOR TO PARAMETER UNIT

Next: p1277, !f1278

RESET APPLIANCE - FAULT/STATUS CODE DISPLAYED

CH TEMPERATURE CONTROL SET TO OFF

Next: !p1285, !f1424

OBSERVATION AIR PRESSURE SWITCH FITTED

DOES THE APPLIANCE HAVE AN AIR PRESSURE SWITCH FITTED?

Next: p517, f1303

FAULT CODES

Next: !p16, !f15

RESET APPLIANCE - FAULT CODE DISPLAYED AT IGNITION

Next: !p1308, !f1309

RESISTANCE SAFETY CIRCUIT AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: !p1319, f1320

RESISTANCE SWITCH AIR PRESSURE

GAIN ACCESS TO AIR PRESSURE SWITCH AND DISCONNECT LEADS

Next: !p1323, !f1324

RESISTANCE SAFETY CIRCUIT AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: !p1339, f1340

RESISTANCE SWITCH AIR PRESSURE

GAIN ACCESS TO AIR PRESSURE SWITCH AND DISCONNECT LEADS

Next: !p1343, !f1344

INSPECTION FLUE

Next: p1357, !f1358

OPERATION AIR PRESSURE SWITCH

REMOVE AIR PRESSURE SWITCH AND DISCONNECT LEADS

Next: !p1359, !f1360

OBSERVATION AIR PRESSURE SWITCH FITTED

DOES THE APPLIANCE HAVE AN AIR PRESSURE SWITCH FITTED?

Next: p913, !f1369

OBSERVATION AIR PRESSURE SWITCH FITTED

DOES THE APPLIANCE HAVE AN AIR PRESSURE SWITCH FITTED?

Next: p826, !f1378

INSPECTION AIR INTAKE MANIFOLD

REMOVE THE AIR INTAKE MANIFOLD

Next: p1380, !f1381

OBSERVATION SPARK GENERATOR

{GAINPCBACS}
REMOVE SPARK IGNITION LEAD FROM THE SPARK GENERATOR AND MAKE SAFE

Next: p1382, !f1383

INSPECTION FLUE

Next: p1384, !f1385

INSPECTION INTERFACE AND SUMP

Next: p1386, ?1388, ?1390

INSPECTION ELECTRODE IGNITION

REMOVE SPARK ELECTRODE ASSEMBLY FROM THE BOILER

Next: p1392, !f1393

INSPECTION HEAT EXCHANGER FLUEWAYS

REMOVE THE COMBUSTION CONTROL UNIT AND GAIN
ACCESS TO THE HEAT EXCHANGER FLUEWAYS

Next: p1394, !f1493

INSPECTION BURNER

Next: !p1400, !f1401

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: p1405, !f1406

RESISTANCE POTENTIOMETER - CH TEMPERATURE

DISCONNECT USER INTE

Next: !p1407, !f1408

INSPECTION FLUE

Next: p1410, !f1411

INSPECTION INTERFACE AND SUMP

Next: p1412, ?1414, ?1416

INSPECTION HEAT EXCHANGER FLUEWAYS

REMOVE THE COMBUSTION CONTROL UNIT AND GAIN
ACCESS TO THE HEAT EXCHANGER FLUEWAYS

Next: !p1418, !f1489

INSPECTION COMBUSTION CIRCUIT SEALS

Next: p1446, !f1445

INSPECTION HEAT EXCHANGER FLUEWAYS

REMOVE THE COMBUSTION CONTROL UNIT AND GAIN
ACCESS TO THE HEAT EXCHANGER FLUEWAYS

Next: p1466, !f1465

INSPECTION BURNER

Next: !p1487, !f1485

INSPECTION FLUE

Next: !p1496, !f1497

RESISTANCE GAS VALVE

REMOVE ELECTRICAL CONNECTOR FROM THE GAS VALVE

Next: p1120, !f1542

INSPECTION BUTTON STUCK IN

Next: !p1549, !f1550

VOLTAGE MAINS AT PCB

{GAINPCBACS}

Next: p19, !f20

RESISTANCE FUSE PCB

REMOVE FUSE FROM THE PCB

Next: p21, !f1544

OBSERVATION BOILER RESPONDS

Next: !p25, !f795

INSPECTION CONDENSATE

Next: p280, !f281

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS PRESSURE INLET TEST POINT LOCATED UNDERNEATH THE BOILER

Next: p340, !f341

PRESSURE GAS INLET

ATTACH PRESSURE GAUGE TO GAS PRESSURE INLET TEST POINT LOCATED UNDERNEATH THE BOILER

Next: p1498, !f283

INSPECTION CONDENSATE

Next: p342, !f343

INSPECTION AIR INTAKE MANIFOLD

REMOVE THE AIR INTAKE MANIFOLD

Next: p929, !f345

RESET APPLIANCE - FAULT CODE

CH TEMPERATURE CONTROL SET TO OFF

Next: !p389, !f390

RESISTANCE THERMISTOR RETURN AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: p387, f397

INSPECTION WIRING HARNESS CONNECTIONS

{GAINPCBACS}

Next: !p1425, !f650

RESISTANCE SAFETY CIRCUIT AND HARNESS

REMOVE CONNECTOR X5 FROM THE PCB

Next: p518, f519

RESET APPLIANCE - FAULT CODE DISPLAYED AT IGNITION

Next: p681, !f526

RESISTANCE SWITCH AIR PRESSURE

GAIN ACCESS TO AIR PRESSURE SWITCH AND DISCONNECT LEADS

Next: !p522, !f523

OBSERVATION SYSTEM WATER

GAIN ACCESS TO SYSTEM AS REQUIRED

Next: p812, !f614

OBSERVATION SYSTEM WATER

GAIN ACCESS TO SYSTEM AS REQUIRED

Next: p807, !f552

DISCONNECT EXTERNAL BL CONNECTIONS

REMOVE EXTERNAL CONN

Next: !p668, !f669

OPERATION AIR PRESSURE SWITCH

REMOVE AIR PRESSURE SWITCH AND DISCONNECT LEADS

Next: p1495, !f683

OBSERVATION SYSTEM PUMP RUNNING

CH TEMPERATURE CONTROL SET TO OFF POSITION
LOCATE & GAIN ACCESS TO SYSTEM PUMP

Next: p688, f865

PUMP LIMPET TEST

Next: p690, !f691

RESET APPLIANCE - STATUS CODE - TEMPERATURE PROTECTION

ENSURE BOILER IS COOL

Next: p692, f716

TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

ATTACH TEMPERATURE CLAMP TO FLOW PIPE

Next: !p721, ?702, ?704

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p706, !f707

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p708, !f709

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p719, !f720

TEMPERATURE FLOW & RETURN DIFFERENTIAL

ENSURE BOILER IS COOL
ATTACH TEMPERATURE CLAMPS TO FLOW & RETURN PIPE

Next: p723, !f724

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p725, !f726

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p727, !f728

OBSERVATION SYSTEM WATER

GAIN ACCESS TO SYSTEM AS REQUIRED

Next: p839, !f764

VOLTAGE EXTERNAL CONTROLS

Next: p17, !f18

PUMP LIMPET TEST

Next: p808, !f809

INSPECTION SYSTEM BYPASS

Next: !p810, !f811

PUMP LIMPET TEST

Next: p813, !f814

RESET APPLIANCE - FAULT CODE - OVERHEAT

ENSURE BOILER IS COOL

Next: p815, f1310

TEMPERATURE - RUN BOILER TO MAXIMUM

ATTACH TEMPERATURE CLAMP TO FLOW PIPE JUST ABOVE HEAT EXCHANGER

Next: !p823, ?825, ?827

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: p833, !f834

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p829, !f830

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p831, !f832

INSPECTION FLUE

Next: p835, !f836

OPERATION AIR PRESSURE SWITCH

REMOVE AIR PRESSURE SWITCH AND DISCONNECT LEADS

Next: !p837, !f838

PUMP LIMPET TEST

Next: p840, !f841

RESET APPLIANCE - STATUS CODE - TEMPERATURE PROTECTION

ENSURE BOILER IS COOL

Next: p842, f843

TEMPERATURE PROTECTION - RUN BOILER TO MAXIMUM

ATTACH TEMPERATURE CLAMP TO FLOW PIPE

Next: !p848, ?850, ?852

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p846, !f847

TEMPERATURE FLOW & RETURN DIFFERENTIAL

ENSURE BOILER IS COOL
ATTACH TEMPERATURE CLAMPS TO FLOW & RETURN PIPE

Next: p858, !f859

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p854, !f855

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p856, !f857

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p860, !f861

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p862, !f863

OBSERVATION SYSTEM PUMP RUNNING

CH TEMPERATURE CONTROL SET TO OFF POSITION
LOCATE & GAIN ACCESS TO SYSTEM PUMP

Next: p899, f926

PUMP LIMPET TEST

Next: p900, !f901

RESET APPLIANCE - FAULT CODE - OVERHEAT

ENSURE BOILER IS COOL

Next: p902, f1330

TEMPERATURE - RUN BOILER TO MAXIMUM

ATTACH TEMPERATURE CLAMP TO FLOW PIPE JUST ABOVE HEAT EXCHANGER

Next: !p910, ?912, ?914

RESISTANCE STAT OVERHEAT

GAIN ACCESS TO OVERHEAT STAT & DISCONNECT LEADS TO STAT

Next: p1356, !f921

RESISTANCE THERMISTOR FLOW

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE FLOW THERMISTOR ELECTRICAL CONNECTOR

Next: p916, !f917

RESISTANCE THERMISTOR RETURN

REMOVE THE AIR INTAKE AND FLUE MANIFOLDS
REMOVE RETURN THERMISTOR ELECTRICAL CONNECTOR

Next: !p918, !f919

INSPECTION INTERFACE AND SUMP

Next: p1000, ?1019, ?1021

Welcome to the XSol Diagnostic System