XSol Diagnostic System

POTTERTON PUMA 80E SIT

GLOBALLY REPLACED

Next: &18, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

PUMP OVERRUN

BOILER SWITCH IN ON

Next: &nff, !f19

CH MODULATION

CENTRAL HEATING SWIT

Next: &1, f123

CH FAN

CENTRAL HEATING SWITCH IN CONSTANT POSITION
BOILER SWITCH IN ON POSITION
ENSURE BOILER IS COOL

Next: &417, f114

DHW WATER PUMP RUNNING

BOILER SWITCH IN ON

Next: &170, f98

RESET LOCKOUT

BOILER SWITCH ON

Next: &319, f74

DHW FAN

BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN OFF (CENTRAL) POSITION

Next: &149, f45

DHW DEMAND LED ON

{GAINPCBACS}
BOIL

Next: &236, f36

FROST THERMOSTAT

{GAINPCBACS}
CENTRAL HEATING SWITCH OFF
DISCONNECT PLUG PL1

Next: &13, !f34

LOW SYSTEM PRESSURE LED

BOILER SWITCH IN STANDBY POSITION
CENTRAL HEATING SWITCH IN OFF(CENTRAL) POSITION

Next: &14, f29

MAINS LED

BOILER SWITCH IN STANDBY POSITION
CENTRAL HEATING SWITCH IN OFF (CENTRAL) POSITION

Next: &15, f370

POTTERTON PUMA 80E SIT

G.C. NUMBER 47 590 1

Next: &16, !f20

DHW SPARKING

BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN OFF(CENTRAL) POSITION

Next: &10, f150

DHW BURNER PRESSURE MINIMUM

ATTACH PRESSURE GAUG

Next: &172, f246

DHW BURNER PRESSURE MAXIMUM

ATTACH PRESSURE GAUG

Next: &331, f250

HOT WATER OPERATION

BOILER SWITCH IN ON

Next: &4, ?206, ?208

DHW FLAME LED

BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN OFF (CENTRAL) POSITION

Next: &7, f225

DHW DEMAND LED OFF

BOILER SWITCH IN STA

Next: &12, f237

DHW BURNER IGNITES

BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN OFF (CENTRAL) POSITION

Next: &224, f320

DHW MODULATION

ATTACH PRESSURE GAUG

Next: &205, ?332, ?334

FUSE FURTHER INVESTIGATION

Next: &nff, f384

CENTRAL HEATING

CENTRAL HEATING SWITCH IN CONSTANT POSITION
BOILER SWITCH IN ON POSITION

Next: &3, ?408, ?410, ?412

OBSERVATION CH FULL RATE

ATTACH PRESSURE GAUG

Next: &407, ?418, ?420, ?426

CH FAN

CH SWITCH

Next: End

CH SWITCH

MODULATION BOARD

Next: End

BOILER SWITCH

MODULATION BOARD

Next: End

CH MODULATION

CH SENSOR

Next: End

DHW FAN

DHW SENSOR

Next: End

DHW SPARKING

SPARK ELECTRODE LEAD

Next: End

DHW SPARKING

FULL SEQUENCE BOARD CABLE

Next: End

DHW SPARKING

AIR PRESSURE SWITCH

Next: End

DHW SPARKING

AIR PRESSURE TUBE

Next: End

NO SPARKING

FAN VENTURI

Next: End

DHW SPARKING

FLUE

Next: End

NO SPARKING

FAN

Next: End

PUMP OVERRUN

MODULATION BOARD

Next: End

ELECTRICAL SAFETY CHECKS

Next: End

DHW FLAME LED

DISPLAY BOARD

Next: End

DHW FLAME LED

INLET PRESSURE

Next: End

DHW FLAME LED

FLAME SENSE ELECTRODE ALIGNMENT

Next: End

DHW FLAME LED

FLAME SENSE ELECTRODE

Next: End

DHW FLAME LED

FLAME SENSE ELECTRODE LEAD

Next: End

DHW DEMAND LED OFF

DHW FLOW SWITCH

Next: End

DHW DEMAND LED OFF

DHW DEMAND MICROSWITCH

Next: End

DHW DEMAND LED ON

DHW FLOW RATE

Next: End

DHW BURNER PRESSURE MIN

INLET PRESSURE

Next: End

DHW BURNER PRESSURE

DHW SENSOR

Next: End

DHW BURNER PRESSURE

DISPLAY BOARD

Next: End

DHW BURNER PRESSURE MAX

INLET PRESSURE

Next: End

LOW SYSTEM PRESSURE LED

SYSTEM PRESSURE

Next: End

LOW SYSTEM PRESSURE LED

WATER PRESSURE SWITCH

Next: End

DHW BURNER IGNITES

INLET PRESSURE

Next: End

DHW BURNER IGNITES

OVERHEAT THERMOSTAT

Next: End

DHW BURNER IGNITES

SPARK ELECTRODE ALIGNMENT

Next: End

DHW BURNER IGNITES

GAS VALVE (SOLENOID)

Next: End

BURNER CYCLES ON AND OFF

AIR PRESSURE SWITCH

Next: End

BOILER CYCLES ON AND OFF

DHW LIMIT THERMOSTAT

Next: End

FROST THERMOSTAT

Next: End

DHW BURNER CYCLING ON AND OFF

FAN VENTURI

Next: End

DHW BURNER CYLING ON AND OFF

AIR PRESSURE TUBE

Next: End

DHW BURNER CYCLING ON AND OFF

FAN

Next: End

DHW BURNER CYCLING ON AND OFF

HEAT EXCHANGER

Next: End

DHW BURNER CYCLING ON AND OFF

FLUE

Next: End

DHW BURNER MODUALTION

DHW SENSOR

Next: End

DHW BURNER MODULATION

DISPLAY BOARD

Next: End

FUSE F1

MODULATION BOARD

Next: End

MODULATION BOARD VOLTAGE

MODULATION BOARD

Next: End

MAINS LED

DISPLAY BOARD CABLE

Next: End

FUSE INVESTIGATION

WATER PUMP

Next: End

FUSE INVESTIGATION

FAN

Next: End

FUSE INVESTIGATION

TRANSFORMER

Next: End

MAINS LED

FUSE F1 (2 AMP)

Next: End

FUSE INVESTIGATION

GAS VALVE

Next: End

FUSE INVESTIGATION

SOLENOID OPERATOR - SIT

Next: End

CENTRAL HEATING

DIVERTER VALVE

Next: End

CH FULL RATE - SHUTTING DOWN

CH SENSOR

Next: End

CH FULL RATE - STAYING ON LOW

CH SENSOR

Next: End

DHW DEMAND LED ON

DHW DEMAND MICROSWITCH

Next: End

DHW BURNER MODULATION - CYCLING

DHW SENSOR

Next: End

CH FULL RATE

WATER PUMP

Next: End

MAINS LED

MAINS FUSE

Next: End

FUSE INVESTIGATION

WATER PRESSURE SWITCH

Next: End

OBSERVATION CH FULL RATE

WAX SENSOR

Next: End

BOILER SWITCH (POWER IN)

MODULATION BOARD

Next: End

DHW FAN

AIR PRESSURE SWITCH

Next: End

DHW FAN

DHW LIMIT THERMOSTAT

Next: End

DHW FAN

DISPLAY BOARD CABLE

Next: End

RESET LOCKOUT

DISPLAY BOARD

Next: End

DHW WATER PUMP RUNNING

MODULATION BOARD

Next: End

DHW WATER PUMP RUNNING

WATER PUMP

Next: End

CH FAN

Next: End

CH FAN

CH SENSOR

Next: End

CH MODULATION

DISPLAY BOARD

Next: End

DHW SPARKING

SPARK ELECTRODE

Next: End

DHW SPARKING

IGNITION CONTROL BOARD

Next: End

HOT WATER OPERATION

HEAT EXCHANGER

Next: End

HOT WATER OPERATION

DHW FLOW LIMITER

Next: End

DHW FLAME LED

IGNITION CONTROL BOARD

Next: End

DHW DEMAND LED OFF

MODULATION BOARD

Next: End

DHW DEMAND LED ON

DHW FLOW SWITCH

Next: End

MINIMUM SET WRONG

GAS VALVE

Next: End

DHW BURNER PRESSURE

GAS VALVE

Next: End

DHW BURNER PRESSURE

MODULATION BOARD

Next: End

DHW BURNER IGNITES

MODULATION BOARD

Next: End

DHW BURNER IGNITES

GAS VALVE

Next: End

LOW SYSTEM PRESSURE LED

MODULATION BOARD

Next: End

DHW BURNER CYCLING ON AND OFF

IGNITION CONTROL BOARD

Next: End

DHW BURNER MODULATION

GAS VALVE

Next: End

DHW BURNER MODULATION

MODULATION BOARD

Next: End

MAINS LED

TRANSFORMER

Next: End

MAINS LED

DISPLAY BOARD

Next: End

F1 FUSE INVESTIGATION

Z REDIRECT

Next: End

CENTRAL HEATING

HEAT EXCHANGER

Next: End

CENTRAL HEATING

Next: End

CENTRAL HEATING

DRIPPING TAP OR LEAKING DHW SUPPLY

Next: End

CH FULL RATE

MODULATION BOARD POT

Next: End

CH FULL RATE

MODULATION BOARD

Next: End

DHW DEMAND LED ON

MODULATION BOARD

Next: End

MAINS LED

Next: End

MAINS FUSE FURTHER INVESTIGATION

Z REDIRECT

Next: End

FUSE INVESTIGATION

FUSE BLOWN

Next: End

CH FULL RATE

Next: End

DHW FAN

BOILER SWITCH

Next: End

DHW FAN

FAN

Next: End

FAN VOLTAGE

MODULATION BOARD

Next: End

RESET LOCKOUT

IGNITION CONTROL BOARD

Next: End

MARGINAL INCREASE IN FLOW RATE

CHARACTERISTIC TEST FROM HOT WATER OPERATION

Next: !p207

NO INCREASE IN FLOW RATE

CHARACTERISTIC TEST FROM HOT WATER OPERATION

Next: !p209

BURNER DOES NOT MODULATE

CHARACTERISTIC TEST FROM DHW MODULATION

Next: p333

BURNER REPEATEDLY CUTS OUT BEFORE MODULATION TAKES PLACE

CHARACTERISTIC TEST FROM DHW MODULATION

Next: p335

RADIATORS COLD

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: p409

NOISY OPERATION, WARM RADIATORS

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p411

QUIET OPERATION, WARM RADIATORS

CHARACTERISTIC TEST FROM CENTRAL HEATING

Next: !p413

BOILER REMAINS ON LOW RATE

CHARACTERISTIC TEST FROM OBSERVATION CH FULL RATE

Next: p419

BOILER SHUTS DOWN BEFORE IT CAN RUN FOR 2 MINUTES

CHARACTERISTIC TEST FROM OBSERVATION CH FULL RATE

Next: p441

BOILER INCREASES TO MAXIMUM RATE IMMEDIATELY

CHARACTERISTIC TEST FROM OBSERVATION CH FULL RATE

Next: !p427

18/07/2018 11:49:52 1807_1_50_1 20/07/2018 14:22:43

18/07/2018 14:33:45

Next: End

ROOM THERMOSTAT

{GAINPCBACS}
CENT

Next: p116, f115

CH SWITCH

{GAINPCBACS}
CENTRAL HEATING SWITCH IN CONSTANT POSITION

Next: p118, !f117

CH TEMPERATURE SENSOR RESISTANCE

Next: !p125, !f124

SPARK GENERATOR

REMOVE SPARK ELECTRO

Next: !p151, f152

SPARK ELECTRODE LEAD

Next: p153, !f154

LOCKOUT OCCURS

Next: p226, !f227

DHW FLOW SWITCH OPERATION

Next: p238, !f239

INLET PRESSURE

BOILER SWITCH IN ON

Next: !p247, !f248

INLET PRESSURE

BOILER SWITCH IN ON

Next: p278, !f293

DHW TEMPERATURE SENSOR

Next: p289, !f290

SYSTEM PRESSURE

Next: p31, !f30

INLET PRESSURE

BOILER SWITCH IN ON

Next: p321, !f322

OVERHEAT THERMOSTAT RESISTANCE

REMOVE WHITE WIRES FROM OVERHEAT THERMOSTAT

Next: !p325, !f326

DHW FLOW SWITCH

Next: p38, f37

DHW TEMPERATURE SENSOR

Next: p366, !f367

WATER FLOW CHECK

Next: !p244, !f245

TRANSFORMER VOLTAGE (24V)

{GAINPCBACS}
BOILER SWITCH IN ON POSITION

Next: p371, f372

FUSE F1

REMOVE FUSE F1 FROM MODULATION CONTROL BOARD

Next: p373, f394

RESISTANCE PUMP

DISCONNECT INLINE CONNECTOR FOR THE PUMP

Next: p385, !f390

FUSE FURTHER INVESTIGATION

Next: !p395, !f396

RESISTANCE MAINS FUSE

REMOVE FUSE FROM FUSED SPUR

Next: !p449, f448

FUSE FURTHER INVESTIGATION

Next: !p450, !f451

BOILER SWITCH (POWER OUT)

{GAINPCBACS}
BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN OFF (CENTRAL) POSITION

Next: p47, f46

BOILER SWITCH (POWER IN)

BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN OFF (CENTRAL) POSITION

Next: !p49, !f48

AIR PRESSURE SWITCH - NO AIR

REMOVE ORANGE AND PURPLE LEADS FROM AIR PRESSURE SWITCH

Next: p53, !f52

LOCKOUT RESET SWITCH

Next: !p76, !f75

WATER PUMP VOLTAGE

BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN CONSTANT POSITION

Next: !p100, !f99

BOILER SWITCH

CENTRAL HEATING SWITCH IN CONSTANT POSITION
BOILER SWITCH IN ON POSITION

Next: !p122, !f121

ROOM THERMOSTAT (INPUT)

{GAINPCBACS}
CENT

Next: !p120, !f119

FULL SEQUENCE BOARD CABLE

VISUAL AND MECHANICAL CHECK OF CABLE AND CONNECTIONS

Next: p155, !f156

AIR PRESSURE SWITCH - AIR DETECT

DISCONNECT LEADS FRO

Next: p157, !f158

AIR PRESSURE SWITCH TUBES

Next: p159, !f160

INSPECTION FAN VENTURI

REMOVE THE FAN VENTURI, TOP OF HEAT EXCHANGER
AND SIDE OF FAN ASSEMBLY

Next: p165, !f162

FLUE INSPECTION

Next: !p163, !f164

INSPECTION FAN ASSEMBLY

REMOVE FAN ASSEMBLY FROM BOILER

Next: p161, !f169

INLET PRESSURE

BOILER SWITCH IN ON

Next: p228, !f229

FLAME SENSE ELECTRODE ALIGNMENT

Next: p230, !f231

FLAME SENSE ELECTRODE

Next: p232, !f233

FLAME SENSE ELECTRODE LEAD

Next: !p234, !f235

DHW MICROSWITCH

REMOVE BOTH ORANGE WIRES FROM DHW DEMAND MICROSWITCH

Next: !p240, !f241

GAS VALVE 3 VOLTAGE

BOILER SWITCH IN ON

Next: !p287, f288

DHW POTENTIOMETER

TURN / SET THE HOT WATER CONTROL (POTENTIOMETER) TO APPROXIMATELY MID POSITION

Next: !p291, !f292

WATER PRESSURE SWITCH

REMOVE BOTH YELLOW LEADS FROM WATER PRESSURE SWITCH

Next: !p33, !f32

GAS VALVE 1 & 2 VOLTAGE

{GAINPCBACS}
BOILER SWITCH IN ON POSITION
CENTRAL HEATING SWITCH IN OFF (CENTRAL) POSITION

Next: p323, f324

SPARK ELECTRODE ALIGNMENT

Next: p327, !f328

GAS VALVE 2 RESISTANCE

Next: !p329, !f330

MODUREG VOLTAGE

BOILER SWITCH IN ON

Next: !p359, f365

AIR PRESSURE SWITCH TEST

DISCONNECT LEADS FRO

Next: p336, !f337

DHW LIMIT THERMOSTAT

REMOVE PURPLE WIRES FROM DHW LIMIT THERMOSTAT

Next: p428, !f339

INSPECTION FAN VENTURI

REMOVE THE FAN VENTURI, TOP OF HEAT EXCHANGER
AND SIDE OF FAN ASSEMBLY

Next: p340, !f341

AIR PRESSURE SWITCH TUBES

Next: p342, !f343

INSPECTION FAN ASSEMBLY

REMOVE FAN ASSEMBLY FROM BOILER

Next: p344, !f345

HEAT EXCHANGER INSPECTION

Next: p346, !f347

FLUE INSPECTION

Next: !p348, !f349

DHW POTENTIOMETER

TURN / SET THE HOT WATER CONTROL (POTENTIOMETER) TO APPROXIMATELY MID POSITION

Next: !p368, !f369

MODULATION BOARD VOLTAGE

LOWER FRONT FASCIA PANEL

Next: p379, !f380

MAINS POWER SUPPLY

LOWER CONTROL PANEL (HINGED)

Next: p375, f397

TRANSFORMER INPUT (240 VOLTS)

Next: !p377, !f378

DISPLAY BOARD CABLE (POTENTIOMETERS)

VISUAL AND MECHANICAL SOUNDNESS CHECK OF THE CONNECTIONS

Next: !p381, !f382

DHW DEMAND MICROSWITCH

REMOVE BOTH ORANGE WIRES FROM DHW DEMAND MICROSWITCH
BOILER SWITCH IN STANDBY POSITION

Next: !p44, !f43

RESISTANCE FAN

DISCONNECT INLINE CONNECTOR FOR THE PUMP

Next: p386, !f391

RESISTANCE GAS VALVE OPERATING SOLENOID

REMOVE PLUG FROM THE

Next: p401, !f406

RESISTANCE TRANSFORMER

DISCONNECT CONNECTOR PL6 AT THE PCB

Next: p452, !f393

RESISTANCE GAS VALVE MOD AND SAFETY SOLENOIDS

DISCONNECT SPADE CONNECTORS FROM MODULATING SOLENOID
DISCONNECT PLUG FROM SAFETY SOLENOIDS

Next: p388, !f405

DIVERTER VALVE OPERATION

TURN OFF THE MAINS W

Next: !p416, !f415

CH TEMPERATURE SENSOR RESISTANCE

Next: !p424, !f425

CH TEMPERATURE SENSOR RESISTANCE

Next: p457, !f423

DHW TEMPERATURE SENSOR

Next: p338, !f440

PUMP LIMPET TEST

Next: p421, !f445

RESISTANCE WATER PRESSURE SWITCH TO EARTH

REMOVE BOTH YELLOW LEADS FROM WATER PRESSURE SWITCH

Next: !p453, !f456

DIVERTER VALVE OPERATION

TURN OFF THE MAINS W

Next: !p458, !f459

FAN VOLTAGE

BOILER SWITCH ON

Next: !p51, f50

DHW LIMIT THERMOSTAT

REMOVE PURPLE WIRES FROM DHW LIMIT THERMOSTAT

Next: p55, !f54

DISPLAY BOARD CABLE (POTENTIOMETERS)

VISUAL AND MECHANICAL SOUNDNESS CHECK OF THE CONNECTIONS

Next: p57, !f56

DHW TEMPERATURE SENSOR

Next: !p59, !f148

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