XSol Diagnostic System

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:

47-581-29 RAVENHEAT LS80

WARNING - IMPORTA

Next: &1, *

APPLIANCE APPEARS SATISFACTORY

Next: nff

RAVENHEAT LITTLE STAR LS80

G.C. NUMBER 47 581 2

Next: &661, !f2

OPERATIONAL SEQUENCE

Next: &5, !f658

DHW FLOW RATE

Next: &15, f6

DHW PUMP RUNS

Next: &37, f16

DHW FAN RUNS

Next: &51, f38

DHW BURNER LIGHTS (PRESSURE TO MAXIMUM)

LOOSEN THE OUTLET TEST POINT SCREW (P2) AND ATTACH U-GAUGE TO THE TEST POINT.

Next: &106, ?52, ?54, ?58, ?393

DHW OPERATION

Next: &127, ?107, ?109, ?111, ?113

DHW MODULATION

LOOSEN THE OUTLET TE

Next: &135, f128

CH IGNITION

Next: &147, f740

CH OPERATION

LOOSEN THE OUTLET TEST POINT SCREW (P2) AND ATTACH U-GAUGE TO THE TEST POINT.

Next: &170, ?148, ?150, ?152

SYSTEM PRESSURE RISE

SELECTOR SWITCH TO HEATING AND HOT WATER POSITION

Next: &172, !f171

CH MODULATION

LOOSEN THE OUTLET TEST POINT SCREW (P2) AND ATTACH U-GAUGE TO THE TEST POINT.

Next: &178, f173

CH PUMP OVERRUNS

Next: &nff, f179

GAS VALVE VARIATION

DURING THE PRODUCTIO

Next: &3, !f662

BURNER PRESSURE LOW

GAS INLET PRESSURE

Next: End

MOD SOL

GAS VALVE

Next: End

DHW MODULATION

DHW POTENTIOMETER

Next: End

BOILER UP TO TEMP, RADIATORS COLD

3 WAY VALVE

Next: End

BOILER NOISY, KETTLING

3 WAY VALVE

Next: End

EXP VESS

EXPANSION VESSEL

Next: End

CH MODULATION

CH SENSOR

Next: End

CH MODULATION

CH POTENTIOMETER

Next: End

CH PUMP OVERRUNS

CH SENSOR

Next: End

PUMP RUNS

ON/OFF SWITCH

Next: End

DHW PUMP RUNS

FUSE F1 (2A)

Next: End

START

START

Next: End

LOW BURNER PRESS

CH SENSOR

Next: End

BURNER PRESSURE LOW

DHW SENSOR

Next: End

LOW BRUNER PRESS

DHW POTENTIOMETER

Next: End

SPARKING

FLUE

Next: End

SPARKING

FLUE VENTURI

Next: End

SPARKING

AIR PRESSURE SWITCH TUBES

Next: End

SPARKING

CASE NOT SEALING CORRECTLY

Next: End

OH THERMOSTAT

OVERHEAT THERMOSTAT

Next: End

HEAT EX FLUE

HEAT EXCHANGER (FLUEWAYS)

Next: End

GAS INLET PRES

GAS INLET PRESSURE

Next: End

BURNER CROSS LIGHTS BUT BAFFLES OUT

FLUE

Next: End

BAFFLES OUT

CASE NOT SEALING CORRECTLY

Next: End

AIR PRESSURE SWITCH TUBES

AIR PRESSURE SWITCH TUBES

Next: End

DOESN'T CROSS LIGHT, PRESSURE ABSENT

GAS INLET PRESSURE

Next: End

MOD SOL - NOT CROSS LIGHTING

GAS VALVE

Next: End

DOESN'T CROSS LIGHT, PRESSURE ABSENT

PCB

Next: End

FLUE VENTURI

FLUE VENTURI

Next: End

FLUE

FLUE

Next: End

NOT LIGHTING

PCB

Next: End

NOT LIGHTING

GAS VALVE

Next: End

NOT LIGHTING

BURNER

Next: End

DHW SENSOR (FULL DEMAND)

DHW SENSOR

Next: End

DHW RUNS HOT AND COLD BURNER CYCLES ON AND OFF

DHW POTENTIOMETER

Next: End

DHW CYCLING

PUMP

Next: End

DHW TOO COOL RADIATORS COLD

DHW SENSOR

Next: End

DHW MODULATION

DHW SENSOR

Next: End

BOILER COLD, RADIATORS COLD

CH POTENTIOMETER

Next: End

BOILER COLD, RADIATORS COLD

CH SENSOR

Next: End

BOILER NOISY, KETTLING

PUMP

Next: End

TOO HOT

CH POTENTIOMETER

Next: End

TOO HOT

CH SENSOR

Next: End

SYSTEM BYPASS

Next: End

BOILER UP TO TEMP, RADIATORS COLD

PUMP

Next: End

BOILER UP TO TEMP, RADIATORS COLD

Next: End

SHUTING OFF EARLY

CH SENSOR

Next: End

SHUTING DOWN EARLY

CH POTENTIOMETER

Next: End

SPARKING

ELECTRODE LEAD

Next: End

SPARK GAP

ELECTRODE

Next: End

NOT CROSS LIGHTING

BURNER INJECTOR

Next: End

NOT CROSS LIGHTING

BURNER

Next: End

NOT CROSS LIGHTING

HEAT EXCHANGER (FLUEWAYS)

Next: End

DHW PUMP RUNS

Next: End

FAN IMPELLOR

FAN IMPELLOR

Next: End

PUMP RUNS

DHW SENSOR

Next: End

PUMP RUNS

CH SENSOR

Next: End

DHW PUMP RUNS

3 WAY VALVE MICROSWITCH

Next: End

PUMP RUNS

3 WAY VALVE

Next: End

LOW WATER

SYSTEM PRESSURE

Next: End

SEQ OF OPS

SEQ OF OPS

Next: End

GAS VALVE VARIATION

GAS VALVE VARIATION

Next: End

FLOW SENSOR - FAN NOT RUNNING

CH SENSOR

Next: End

FAN NOT RUNNING

DHW SENSOR

Next: End

FAN NOT RUNNING

DHW POTENTIOMETER

Next: End

DHW NOISY

DHW POTENTIOMETER

Next: End

DHW NOISY

DHW SENSOR

Next: End

DHW OPERATION (EFFICIENCY)

PUMP

Next: End

DHW COOL

BURNER INJECTOR

Next: End

PUMP RUNS

SUMMER/WINTER SWITCH

Next: End

EXTERNAL CONTROLS (VOLTS IN)

Next: End

TIMER

Next: End

CH DEMAND CONTROL LINK VOLTAGE (IN)

PCB

Next: End

EXTERNAL CONTROLS

Next: End

NO HEATING

CH SENSOR

Next: End

CH POT

CH POTENTIOMETER

Next: End

DHW FLOW RATE

DHW ISOLATING VALVE

Next: End

DHW TOO COOL RADIATORS HOT WITH NO CH DEMAND

3 WAY VALVE

Next: End

DHW FLOW RATE

DHW INLET FILTER

Next: End

DHW TOO COOL RADIATORS COLD

HEAT EXCHANGER

Next: End

BLOCKED

3 WAY VALVE

Next: End

DHW PUMP RUNS

PUMP

Next: End

CH MODULATION

PCB

Next: End

CH PUMP OVERRUNS

PCB

Next: End

FAN

FAN

Next: End

FLOW SENSOR - LOW BURNER PRESS

WIRING HARNESS

Next: End

DHW SENSOR - LOW BURNER PRESS

WIRING HARNESS

Next: End

BURNER PRESSURE LOW

PCB

Next: End

SPARKING

AIR PRESSURE SWITCH

Next: End

BAFFLES OUT

FLAME SENSE ELECTRODE

Next: End

BAFFELS OUT

HARNESS FLAME SENSE

Next: End

FLAME SENSE

PCB

Next: End

AIR PRESSURE SWITCH

AIR PRESSURE SWITCH

Next: End

NOT LIGHTING

GAS INLET PRESSURE

Next: End

NOT LIGHTING

BURNER INJECTOR

Next: End

DHW SENSOR - HOT WATER CYCLES

WIRING HARNESS

Next: End

DHW RUNS HOT AND COLD BURNER CYCLES ON AND OFF

PCB

Next: End

DHW CYCLING

SECONDARY (DHW) HEAT EXCHANGER

Next: End

DHW SENSOR - DHW TOO COOL

WIRING HARNESS

Next: End

DHW OPERATION NOISY

HEAT EXCHANGER

Next: End

DHW MODULATION

PCB

Next: End

DHW SENSOR - MOD

WIRING HARNESS

Next: End

BOILER COLD, RADIATORS COLD

PCB

Next: End

FLOW SENSOR - BOILER AND RADS COLD

WIRING HARNESS

Next: End

BOILER TOO HOT

PCB

Next: End

FLOW SENSOR - BOILER TOO HOT

WIRING HARNESS

Next: End

BOILER NOISY, KETTLING

HEAT EXCHANGER

Next: End

BOILER TOO HOT

Next: End

BOILER UP TO TEMP, RADIATORS COLD

Next: End

FLOW SENSOR - BOILER SHUT DOWN RADS COLD

WIRING HARNESS

Next: End

SHUTTING DOWN EARLY

PCB

Next: End

APS AIR DETECT

PCB

Next: End

NOT CROSS LIGHTING

FLUE

Next: End

DHW SENSOR - PUMP RUNS

WIRING HARNESS

Next: End

FLOW SENSOR - PUMP RUNS

WIRING HARNESS

Next: End

DV PUMP RUNS

PCB

Next: End

LOW WATER

LOW WATER PRESSURE SWITCH

Next: End

FLOW SENSOR - FAN NOT RUNNING

WIRING HARNESS

Next: End

FAN NOT RUNNING DHW SENSOR

WIRING HARNESS

Next: End

FAN NOT RUNNING

PCB

Next: End

FAN

WIRING HARNESS

Next: End

LOW IGN PRESSURE

GAS VALVE ADJUSTMENT

Next: End

GAS INLET PRESSURE (FULL DEMAND)

GAS VALVE ADJUSTMENT

Next: End

DOESNT CROSS LIGHT

GAS VALVE ADJUSTMENT

Next: End

DHW MODULATION

GAS VALVE ADJUSTMENT

Next: End

CH MODULATION

GAS VALVE ADJUSTMENT

Next: End

DHW NOISY

GAS VALVE ADJUSTMENT

Next: End

DHW NOISY

PCB

Next: End

DHW NOISY

WIRING HARNESS

Next: End

DHW NOISY OPERATION KETTLES

SECONDARY (DHW) HEAT EXCHANGER

Next: End

DHW TOO COOL RADIATORS COLD

DHW POTENTIOMETER

Next: End

FLOW SENSOR - NO HEATING

WIRING HARNESS

Next: End

POTENITOMETER RESISTANCE CH

PCB

Next: End

SCALED

SECONDARY (DHW) HEAT EXCHANGER

Next: End

DHW RUNS HOT AND COLD, BURNER CYCLES ON AND OFF

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p470

DHW TOO COOL, RADIATORS HOT

CHARACTERISTIC TEST FROM DHW OPERATION

Next: !p110

DHW INLET FILTER BLOCKED

CHARACTERISTIC TEST FROM DIVERTER VALVE AND DHW FILTER

Next: !p12

DHW TOO COOL, RADS COLD

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p112

DHW NOISY OPERATION, KETTLES

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p114

DIVERTER VALVE BLOCKED

CHARACTERISTIC TEST FROM DIVERTER VALVE AND DHW FILTER

Next: !p14

BOILER NOISY, KETTLING

CHARACTERISTIC TEST FROM CH OPERATION

Next: p149

BOILER HOT BUT RADIATORS COLD

CHARACTERISTIC TEST FROM CH OPERATION

Next: p151

BOILER COLD, RADIATORS COLD

CHARACTERISTIC TEST FROM CH OPERATION

Next: p567

BURNER DOES NOT CROSS LIGHT CORRECTLY

CHARACTERISTIC TEST FROM DHW BURNER LIGHTS (PRESSURE TO MAXIMUM)

Next: p394

LEAD OK BUT ELECTRODE IN POOR CONDITION

CHARACTERISTIC TEST FROM FLAME SENSE ELECTRODE AND LEAD

Next: !p405

ELECTRODE OK BUT LEAD IN POOR CONDITION

CHARACTERISTIC TEST FROM FLAME SENSE ELECTRODE AND LEAD

Next: !p407

PRESSURE DROPS AWAY COMPLETELY

CHARACTERISTIC TEST FROM GAS INLET PRESSURE (BLIP)

Next: !p458

NO DROP OBSERVED

CHARACTERISTIC TEST FROM GAS INLET PRESSURE (BLIP)

Next: p460

BURNER LIGHTS BUT PRESSURE REMAINS LOW

CHARACTERISTIC TEST FROM DHW BURNER LIGHTS (PRESSURE TO MAXIMUM)

Next: p53

BURNER DOES NOT LIGHT

CHARACTERISTIC TEST FROM DHW BURNER LIGHTS (PRESSURE TO MAXIMUM)

Next: p337

BURNER LIGHTS BUT BAFFLES OUT

CHARACTERISTIC TEST FROM DHW BURNER LIGHTS (PRESSURE TO MAXIMUM)

Next: p59

23/12/2011 15:49:12 1_1_50_2 05/01/2012 13:22:15

13/12/2011 13:48:15

Next: End

DHW MODULATION VOLTAGE

SET FLOW RATE AT TAP TO APPROXIMATELY 5 L/MIN

Next: !p716, f130

DHW POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: p494, !f132

PUMP VOLTAGE

Next: !p17, f18

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: p174, !f175

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p180, !f181

ON/OFF SWITCH VOLTAGE (INPUT)

Next: p182, !f636

RESISTANCE HARNESS AND FLOW SENSOR

DISCONNECT SENSOR PLUG FROM THE PCB

Next: p223, f224

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p225, !f232

RESISTANCE DHW SENSOR

DISCONNECT PLUG FROM DHW SENSOR (PURPLE AND GREY LEADS)

Next: !p248, !f242

OVERHEAT THERMOSTAT RESISTANCE

REMOVE BOTH WIRES FROM THE OVERHEAT THERMOSTAT.

Next: p352, !f379

CASE FITTED CORRECTLY

Next: p356, !f378

AIR PRESSURE SWITCH RESISTANCE (NORMALLY OPEN)

REMOVE PLASTIC COVER FROM THE PCB
DISCONNECT THE CONNECTOR AT M3 FROM THE PCB

Next: p39, f40

AIR PRESSURE SWITCH TUBES

Next: p41, !f42

GAS INLET PRESSURE

ATTACH U-GAUGE TO GAS VALVE INLET PRESSURE TEST POINT

Next: p418, !f420

RESISTANCE DHW SENSOR

DISCONNECT PLUG FROM DHW SENSOR (PURPLE AND GREY LEADS)

Next: !p474, !f475

PUMP LIMPET TEST

Next: !p479, !f480

RESISTANCE DHW SENSOR

DISCONNECT PLUG FROM DHW SENSOR (PURPLE AND GREY LEADS)

Next: !p482, !f483

RESISTANCE DHW SENSOR

DISCONNECT PLUG FROM DHW SENSOR (PURPLE AND GREY LEADS)

Next: !p497, !f498

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p572, !f573

PUMP LIMPET TEST

Next: !p605, !f591

MODULATION VOLTAGE - CH

Next: !p717, f596

CH POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: p597, !f598

DHW ISOLATING VALVE

Next: p7, !f8

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p601, !f602

PUMP LIMPET TEST

Next: p608, !f609

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p615, !f616

RESISTANCE DHW SENSOR

DISCONNECT PLUG FROM DHW SENSOR (PURPLE AND GREY LEADS)

Next: !p642, !f643

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p646, !f647

SYSTEM PRESSURE

Next: !p653, !f655

FAN VOLTAGE FROM PCB

Next: !p712, f700

RESISTANCE HARNESS AND FLOW SENSOR

DISCONNECT SENSOR PLUG FROM THE PCB

Next: p701, f702

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p703, !f704

RESISTANCE DHW SENSOR

DISCONNECT PLUG FROM DHW SENSOR (PURPLE AND GREY LEADS)

Next: !p707, !f708

DHW MODULATION

LOOSEN THE OUTLET TE

Next: p728, f719

DHW MODULATION VOLTAGE

SET FLOW RATE AT TAP TO APPROXIMATELY 5 L/MIN

Next: !p720, f721

DHW POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: p722, !f723

RESISTANCE DHW SENSOR

DISCONNECT PLUG FROM DHW SENSOR (PURPLE AND GREY LEADS)

Next: !p726, !f727

BURNER INJECTOR CONDITION

REMOVE GAS RAIL FROM BOILER FOR INSPECTION.

Next: !p732, !f733

SUMMER/WINTER SWITCH RESISTANCE

REMOVE 1 CONNECTOR FROM THE RIGHT HAND SWITCH (PINK LEADS)

Next: p741, !f742

RESISTANCE FLOW SENSOR

DISCONNECT PLUG FROM CH SENSOR (YELLOW LEADS)

Next: !p756, !f757

GAS VALVE MODULATION RESISTANCE

DISCONNECT VIOLET LEADS FROM THE MODULATING SOLENOID

Next: !p713, !f105

RESISTANCE HARNESS AND DHW SENSOR

DISCONNECT M12 PLUG FROM THE PCB.

Next: p119, f481

DIFFERENTIAL TEMPERATURE (PLATE HEX)

Next: !p488, f718

GAS RATE

Next: !p121, f731

DIVERTER VALVE CH POSITION

Next: p589, !f165

DIVERTER VALVE CH POSITION

Next: p606, !f159

CH POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: !p176, !f177

ON/OFF SWITCH VOLTAGE (OUTPUT)

Next: p197, !f184

FUSE F1 RESISTANCE

REMOVE CONTROL BOX COVER
REMOVE FUSE F1 FROM PCB

Next: p638, !f198

FAN FREE TO SPIN

Next: !p220, !f637

RESISTANCE HARNESS AND DHW SENSOR

DISCONNECT M12 PLUG FROM THE PCB.

Next: p247, f241

DHW POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: !p249, !f250

SPARKING AT ELECTRODE

Next: p455, f351

AIR PRESSURE SWITCH AIR DETECT

REMOVE PLASTIC COVER FROM THE PCB
REMOVE AIR PRESSURE SWITCH CONNECTOR FROM M3 ON THE PCB

Next: p621, f355

AIR PRESSURE SWITCH TUBES

Next: p358, !f377

FLUE VENTURI

Next: p360, !f376

FLUE CHECK

Next: !p374, !f375

FAN VOLTAGE

Next: p219, f687

GAS PRESSURE ON IGNITION (BURNER)

ON/OFF SWITCH IN OFF

Next: p626, f417

GAS INLET PRESSURE

ATTACH U-GAUGE TO GAS VALVE INLET PRESSURE TEST POINT

Next: p400, !f401

FLAME SENSE ELECTRODE AND LEAD

DISCONNECT FLAME SENSOR LEAD FROM ELECTRODE AND PCB.

Next: p402, ?404, ?406

FLUE CHECK

Next: p410, !f409

FLUE VENTURI

Next: p43, !f44

CASE FITTED CORRECTLY

Next: !p412, !f411

GAS VALVE MODULATION VOLTAGE (IGNITION)

Next: p419, !f423

GAS VALVE MODULATION RESISTANCE

DISCONNECT VIOLET LEADS FROM THE MODULATING SOLENOID

Next: !p715, !f422

FLUE CHECK

Next: !p45, !f46

GAS INLET PRESSURE DROP

ATTACH U-GAUGE TO GAS VALVE INLET PRESSURE TEST POINT

Next: p456, ?457, ?459

BURNER CONDITION

REMOVE THE BURNER ASSEMBLY FROM THE BOILER.

Next: !p465, !f466

GAS VALVE VOLTAGE

REMOVE PLASTIC COVER FROM THE PCB

Next: p461, !f462

GAS VALVE SOLENOID RESISTANCE

REMOVE THE PLUG FROM THE GAS VALVE.

Next: !p714, !f464

DIFFERENTIAL TEMPERATURE (PLATE HEX)

Next: p471, f478

RESISTANCE HARNESS AND DHW SENSOR

DISCONNECT M12 PLUG FROM THE PCB.

Next: p472, f473

DHW POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: !p476, !f477

RESISTANCE HARNESS AND DHW SENSOR

DISCONNECT M12 PLUG FROM THE PCB.

Next: !p495, f496

GAS VALVE MODULATION VOLTAGE

Next: p98, f222

CH POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: p568, !f569

RESISTANCE HARNESS AND FLOW SENSOR

DISCONNECT SENSOR PLUG FROM THE PCB

Next: !p570, f571

DIFFERENTIAL TEMPERATURE (HEATING)

Next: p592, f590

HEAT EXCHANGER

REMOVE THE BURNER ASSEMBLY FROM THE BOILER.

Next: p399, !f395

GAS PRESSURE - CH

ATTACH U-GAUGE TO GAS VALVE OUTLET PRESSURE TEST POINT

Next: p593, f594

SYSTEM BYPASS

Next: !p603, !f604

RESISTANCE HARNESS AND FLOW SENSOR

DISCONNECT SENSOR PLUG FROM THE PCB

Next: !p599, f600

DIFFERENTIAL TEMPERATURE (HEATING)

Next: p612, f607

SYSTEM BYPASS

Next: !p610, !f611

CH POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: p613, !f618

RESISTANCE HARNESS AND FLOW SENSOR

DISCONNECT SENSOR PLUG FROM THE PCB

Next: !p617, f614

ELECTRODE LEAD INSPECTION

DISCONNECT ELECTRODE LEAD FROM PCB AND ELECTRODE.

Next: p622, !f623

SPARK ELECTRODE FITTING AND CONDITION

Next: !p624, !f625

BURNER INJECTOR CONDITION

REMOVE GAS RAIL FROM BOILER FOR INSPECTION.

Next: p631, !f628

BURNER CONDITION

REMOVE THE BURNER ASSEMBLY FROM THE BOILER.

Next: p633, !f632

HEAT EXCHANGER

REMOVE THE BURNER ASSEMBLY FROM THE BOILER.

Next: !p634, !f635

LOW WATER PRESSURE SWITCH MADE

LOCATE AND REMOVE CONNECTOR M12 FROM THE PCB

Next: p639, f652

RESISTANCE HARNESS AND DHW SENSOR

DISCONNECT M12 PLUG FROM THE PCB.

Next: p640, f641

RESISTANCE HARNESS AND FLOW SENSOR

DISCONNECT SENSOR PLUG FROM THE PCB

Next: p644, f645

DIVERTER VALVE MICROSWITCH (RESISTANCE)

DISCONNECT PLUG CONN

Next: p648, !f649

PCB DIVERTER VALVE VOLTS

Next: !p650, !f651

FLOW BLOCKAGE OR DAMAGE

BOILERS DHW CIRCUIT FULLY DRAINED AND DISCHARGED.

Next: !p9, ?11, ?13

RESISTANCE HARNESS AND DHW SENSOR

DISCONNECT M12 PLUG FROM THE PCB.

Next: p705, f706

DHW POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: !p709, !f710

RESISTANCE HARNESS AND DHW SENSOR

DISCONNECT M12 PLUG FROM THE PCB.

Next: !p724, f725

PUMP LIMPET TEST

Next: !p729, !f730

TEST EXTERNAL CONTROLS VOLTAGE SUPPLY

REMOVE CONTROL BOX COVER
REMOVE AND MAKE SAFE ONE WIRE FROM THE M5 - TIMER TERMINAL

Next: p743, !f744

TEST TIMER SWITCHING

REMOVE CONTROL BOX COVER
ON/OFF SWITCH IN THE ON POSITION

Next: p745, !f746

TEST ROOM STAT VOLTAGE SUPPLY

REMOVE CONTROL BOX COVER
REMOVE AND MAKE SAFE ONE WIRE FROM THE M5 - "ROOM STAT" TERMINAL

Next: p747, !f748

TEST ROOM STAT SWITCHING

REMOVE CONTROL BOX COVER

Next: p753, !f750

RESISTANCE HARNESS AND FLOW SENSOR

DISCONNECT SENSOR PLUG FROM THE PCB

Next: p754, f755

CH POTENTIOMETER RESISTANCE

REMOVE CONTROL BOX COVER
DISCONNECT PLUG MARKED M11

Next: !p758, !f759

GAS INLET PRESSURE

ATTACH U-GAUGE TO GAS VALVE INLET PRESSURE TEST POINT

Next: p102, !f103

System Information

Total Tests: 277

Sequence Logic: Decoded from encrypted .seq file

Navigation: Dynamic based on pass/fail results

Source: 4731307 GW SWIFTFLOW 100 SIT Control