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:

GLOW-WORM MICRON 30FF (FROM SNO 0035001)

WARNING - IMPORTA

Next: &1258, *

NO FAULT FOUND

Next: nff

GLOW-WORM MICRON 30FF

Next: &1390, !f1448

OPERATIONAL SEQUENCE

NO LONGER USED

Next: &1392, !f1387

CH OPERATION

Next: &1374, ?1346, ?1348, ?1350

DHW OPERATION

{BLRSTATMAX}

Next: &nff, ?1375, ?1377, ?1379

TYPE OF DIAGNOSTIC PROCEDURE

PLEASE SELECT FROM O

Next: &1260, !f1447

ENHANCED FAULT CODES

SELECT APPROPRIATE F

Next: &2254, !f1393

EPROM / PCB / SOFTWARE ERROR

OUTSIDE MODEL

Next: &nff, f1431

POLARITY FAULT

Next: &nff, f1435

BLOCKING ERROR

OUTSIDE MODEL

Next: &nff, f1450

FURTHER INVESTIGATION PCB

OUTSIDE MODEL

Next: &nff, f1471

FURTHER INVESTIGATION FUSE

NOT INSIDE MODEL

Next: &nff, f2152

FAN RUNS WITH DEMAND

{BLRSTATMAX}
EXTERNAL CONTROLS CALLING FOR HEAT
ENSURE BOILER IS COOL

Next: &2260, f1844

OBSERVATION DOES BOILER FIRE WITH NO DEMAND

ENSURE NO DEMANDS

Next: &1770, !f2361

BURNER IGNITION

{BLRSTATMAX}

Next: &1345, ?2261, ?2263, ?2265

OVERHEAT OR EARTH FAULT

OUTSIDE MODEL

Next: &nff, f2324

RADIATORS PROVIDE INSUFFICIENT HEAT

GAS INLET PRESSURE

Next: End

RADIATORS PROVIDE INSUFFICIENT HEAT

THERMISTOR

Next: End

BOILER COOL RADIATORS COOL

BURNER INJECTOR

Next: End

BOILER NOISY PUMP RUNS HIGH

PUMP EXTERNAL

Next: End

DHW TOO HOT

THERMISTOR

Next: End

OPERATIONAL SEQUENCE

SYSTEM CHECKS

Next: End

ENHANCED FAULT CODES

SYSTEM CHECKS

Next: End

PCB ERROR CODE

PCB

Next: End

LED1&2 SLOW FLASH

SOCKET AND SEE

Next: End

TYPE OF DIAG PROC

SYSTEM CHECKS

Next: End

ELECTRICAL CHECKS

SYSTEM CHECKS

Next: End

BOILER NOISY

Next: End

FURTHER INV PCB

GAS VALVE + PCB

Next: End

POLARITY FAULT

EARTH LEAD

Next: End

FURTHER INV FUSE

GAS VALVE + FUSE

Next: End

FURTHER INV RESISTANCES

THERMISTOR + FUSE

Next: End

SHORTING

IGNITION ELECTRODE

Next: End

BLOCKING ERROR

IGNITION LEAD ASSEMBLY

Next: End

PASSING

GAS VALVE

Next: End

FAN RUNS NO DEMAND

FUSE 2A

Next: End

FAN RUNS WITH DEMAND

THERMISTOR

Next: End

SPARKING PRESENT

AIR PRESSURE SWITCH TUBES

Next: End

SPARKING PRESENT

VENTURI

Next: End

NO FAN

EARTH LEAD

Next: End

FAN RUNS NO DEMAND

HARNESS FAN

Next: End

FAN RUNS WITH DEMAND

PCB

Next: End

CH OP NO POWER TO PUMP

Next: End

BOILER TO TEMPERATURE RADIATORS COOL PUMP RUNS HIGH

PUMP EXTERNAL

Next: End

BOILER TO TEMPERATURE RADIATORS COOL

Next: End

BURNER IGNITES BUT FLAME BAFFLES OUT OR DIES AWAY

PCB

Next: End

BURNER IGNITES BUT FLAME BAFFLES OUT OR DIES AWAY

GAS INLET PRESSURE

Next: End

BURNER IGNITES BUT FLAME BAFFLES OUT OR DIES AWAY

HEAT EXCHANGER FLUE WAYS

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH 1

PCB

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

IGNITION ELECTRODE AND GAP

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

HEAT EXCHANGER FLUE WAYS

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

IGNITION LEAD ASSEMBLY

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

FLUE

Next: End

NO SPARKING

AIR PRESSURE SWITCH

Next: End

NO SPARKING

IGNITION ELECTRODE AND GAP

Next: End

NO SPARKING

IGNITION LEAD ASSEMBLY

Next: End

BURNER DOES NOT IGNITE

AIR PRESSURE SWITCH TUBES

Next: End

BURNER DOES NOT IGNITE

VENTURI

Next: End

BURNER DOES NOT IGNITE

FLUE

Next: End

BURNER IGNITION

GAS INLET PRESSURE

Next: End

BOILER DOES NOT IGNITE

THERMOSTAT OVERHEAT

Next: End

BURNER DOES NOT IGNITE

GAS VALVE + PCB

Next: End

BURNER DOES NOT IGNITE

GAS VALVE SOLENOIDS

Next: End

BURNER IGNITION

BURNER INJECTOR

Next: End

EARTH FAULT

SOCKET AND SEE

Next: End

OVERHEAT THERMOSTAT

THERMOSTAT OVERHEAT WATER INGRESS

Next: End

LED 1 ILLU

THERMOSTAT OVERHEAT

Next: End

FURTHER INV OVERHEAT

Next: End

PUMP NOT RUNNING OVERHEAT

Next: End

FURTHER INV OVERHEAT LIMPET FAILED

PUMP EXTERNAL

Next: End

NOT SHUTTING OFF FURTHER INV OVERHEAT

THERMISTOR

Next: End

OVERHEAT FAULT

THERMISTOR

Next: End

OVERHEAT INV

THERMOSTAT OVERHEAT

Next: End

BOILER FIRES WITH NO DEMAND

Next: End

OBSERVATION FAN RUNS - TRIPPING / BLOWING FUSES

Next: End

RADIATORS PROVIDE INSUFFICIENT HEAT

GAS VALVE

Next: End

BOILER COOL RADIATORS COOL

PCB

Next: End

DHW TOO COOL

Next: End

DHW OPERATION

Next: End

DHW TOO HOT

Next: End

LED 1&2 SLOW FLASH

SYSTEM CHECKS

Next: End

PCB ERROR CODE

SYSTEM CHECKS

Next: End

LED 1 & 2 SLOW FLASH

PCB

Next: End

BLOCKING ERROR

SYSTEM CHECKS

Next: End

BOILER NOISY

HEAT EXCHANGER ASSEMBLY

Next: End

FURTHER INV PCB

WATER INGRESS + PCB

Next: End

FURTHER INV PCB

THERMISTOR + PCB

Next: End

FURTHER INV PCB

HARNESS GAS VALVE + PCB

Next: End

FAN RUNS DEMAND

FAN

Next: End

FURTHER INV FUSE

THERMISTOR + FUSE

Next: End

FURTHER INV FUSE

WATER INGRESS + FUSE

Next: End

FURTHER INV FUSE

HARNESS GAS VALVE + FUSE

Next: End

BLOCKING ERROR

PCB

Next: End

FURTHER INVESTIGATION FUSE

SYSTEM CHECKS

Next: End

SPARKING PRESENT

AIR PRESSURE SWITCH

Next: End

PCB FURTHER INVESTIGATION

SYSTEM CHECKS

Next: End

FURTHER INV PCB

PCB

Next: End

BOILER TO TEMPERATURE RADIATORS COOL

Next: End

CH OP BOILER TO TEMP RADS COOL

PUMP EXTERNAL

Next: End

BURNER IGNITES BUT FLAME BAFFLES OUT OR DIES AWAY

FAN

Next: End

BURNER IGNITES BUT FLAME BAFFLES OUT OR DIES AWAY

FLUE

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH

FAN

Next: End

BURNER IGNITES BUT DOES NOT ESTABLISH 2

PCB

Next: End

NO SPARKING

PCB

Next: End

RUNNING SLOW

FAN

Next: End

BURNER DOES NOT IGNITE

HARNESS OVERHEAT

Next: End

BURNER DOES NOT IGNITE

PCB

Next: End

BURNER DOES NOT IGNITE

HARNESS GAS VALVE + PCB

Next: End

BURNER DOES NOT IGNITE

GAS VALVE

Next: End

BURNER DOES NOT IGNITE

HARNESS GAS VALVE

Next: End

BURNER IGNITION

BURNER

Next: End

LED 1 ILLU

PCB

Next: End

OVERHEAT OR EARTH FAULT

HARNESS OVERHEAT

Next: End

FURTHER INV OVERHEAT NOT RUNNING

PUMP EXTERNAL

Next: End

OVERHEAT LOCKOUT

OVERHEAT

Next: End

NOT SHUTTING OFF FURTHER INV OVERHEAT

PCB

Next: End

OVERHEAT INV

PCB

Next: End

NO FAN - MAINS SUPPLY 2

Z REDIRECT

Next: End

FUSE FURTHER INVESTIGATION - MAINS

Z REDIRECT

Next: End

NO FAULT

FUSE FURTHER INVESTIGATION

Next: End

Boiler to temperature, radiators cool

CHARACTERISTIC TEST FROM CH OPERATION

Next: p2237

RADIATORS HEAT BUT BOILER NOISY

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1349

Boiler cool, radiators cool

CHARACTERISTIC TEST FROM CH OPERATION

Next: p1351

DHW too cool

CHARACTERISTIC TEST FROM DHW OPERATION

Next: !p1376

DHW too hot

CHARACTERISTIC TEST FROM DHW OPERATION

Next: p1378

Boiler does not react to DHW demand

CHARACTERISTIC TEST FROM DHW OPERATION

Next: !p1380

RESISTANCE TO EARTH LOW OR SHORT CIRCUIT

CHARACTERISTIC TEST FROM RESISTANCE THERMISTOR TO EARTH

Next: !p1732

WATER INGRESS IN THERMISTOR POCKET

CHARACTERISTIC TEST FROM RESISTANCE THERMISTOR TO EARTH

Next: !p1731

RESISTANCE TO EARTH LOW OR SHORT CIRCUIT

CHARACTERISTIC TEST FROM RESISTANCE THERMISTOR TO EARTH

Next: !p2170

WATER INGRESS IN THERMISTOR POCKET

CHARACTERISTIC TEST FROM RESISTANCE THERMISTOR TO EARTH

Next: !p2172

Burner does not ignite

CHARACTERISTIC TEST FROM BURNER IGNITION

Next: p2262

BURNER IGNITES BUT DOES NOT ESTABLISH

CHARACTERISTIC TEST FROM BURNER IGNITION

Next: p2264

BURNER IGNITES BUT BAFFLES OUT

CHARACTERISTIC TEST FROM BURNER IGNITION

Next: p2266

BOILER GOES TO LOCKOUT BEFORE REACHING TEMPERATURE

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO TEMP

Next: p2346

BOILER CONTINUES FIRING PAST 85 DEGREES C

CHARACTERISTIC TEST FROM OBSERVATION RUN BOILER TO TEMP

Next: p2348

07/10/2019 09:44:17 1908_1_50_1 22/10/2019 13:03:42

07/10/2019 13:27:46

Next: End

GAS INLET PRESSURE

ATTACH PRESSURE GAUGE TO INLET PRESSURE TEST POINT
EXTERNAL CONTROLS CALLING

Next: !p1354, !f1355

OBSERVATION BOILER RESET

Next: !p1441, !f1433

OBSERVATION BOILER RESET POLARITY FAULT

Next: !p1436, f1442

SOCKET AND SEE TEST

GAIN ACCESS TO APPLIANCE TERMINAL STRIP

Next: p1443, !f1444

OBSERVATION BOILER RESET BLOCKING ERROR

Next: !p1451, f2184

RESISTANCE THERMISTOR TO EARTH

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: p1472, ?1728, ?1730

RESISTANCE GAS VALVE

REMOVE THE CONNECTOR PLUG FROM THE GAS VALVE

Next: !p1764, !f1765

VOLTAGE FAN AT FAN

Next: !p1845, f1925

MAINS POWER SUPPLY

Next: p2208, f2362

THERMISTOR

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: p2167, !f2181

RESISTANCE GAS VALVE

REMOVE THE CONNECTOR PLUG FROM THE GAS VALVE

Next: !p2175, !f2176

RESISTANCE ELECTRODE TO EARTH

DISCONNECT THE SPARK ELECTRODE FROM THE IGNITION LEAD ASSEMBLY CONNECTOR

Next: p2185, !f2186

FUSE FURTHER INVESTIGATION

THE INFORMATION PROV

Next: !p2211, !f2212

AIR PRESSURE SWITCH TUBES

Next: p2217, !f2218

VOLTAGE TO PUMP

REMOVE PUMP COVER

Next: !p2253, !f2247

FAN VOLTAGE

{BLRSTATMAX}

Next: !p2269, !f2270

FAN VOLTAGE

{BLRSTATMAX}

Next: !p2277, !f2278

PRESSURE APS SWITCHING

DISCONNECT LEADS FROM THE AIR PRESSURE SWITCH NOTING THE CONNECTIONS

Next: p2289, !f2290

IGNITION ELECTRODE AND GAP

DISCONNECT IGNITION LEAD TO THE ELECTRODE

Next: p2293, !f2294

GAS INLET PRESSURE

ATTACH PRESSURE GAUGE TO INLET PRESSURE TEST POINT
EXTERNAL CONTROLS CALLING

Next: p2305, !f2306

RESISTANCE OVERHEAT THERMOSTAT AND HARNESS

REMOVE THE OVERHEAT CONNECTOR FROM THE PCB
THIS IS THE CONNECTOR WHICH HAS THE 2 BROWN WIRES

Next: p2309, f2310

OVERHEAT THERMOSTAT

REMOVE ONE OF THE BROWN LEADS FROM THE OVERHEAT THERMOSTAT
ENSURE APPLIANCE IS COOL

Next: !p2311, !f2312

RESISTANCE GAS VALVE

REMOVE THE CONNECTOR PLUG FROM THE GAS VALVE

Next: !p2315, !f2316

RESISTANCE GAS VALVE

REMOVE THE CONNECTOR PLUG FROM THE GAS VALVE

Next: !p2319, !f2320

OBSERVATION BOILER RESET OVERHEAT

ENSURE BOILER IS COOL

Next: p2325, f2326

SOCKET AND SEE TEST

GAIN ACCESS TO APPLIANCE TERMINAL STRIP

Next: p2327, !f2328

OVERHEAT THERMOSTAT

REMOVE ONE OF THE BROWN LEADS FROM THE OVERHEAT THERMOSTAT
ENSURE APPLIANCE IS COOL

Next: !p2333, !f2334

VOLTAGE TO PUMP

REMOVE PUMP COVER

Next: !p2339, !f2340

INFORMATION NO VOLTAGE TO APPLIANCE

THIS APPLIANCE DOES

Next: !p2363, f2364

MAINS IN OBSERVATION REMOVE PERMANENT MAINS SUPPLY TO APPLIANCE (NO FAN)

REMOVE THE LIVE, NEU

Next: !p2365, !f2366

PUMP LIMPET TEST

Next: p1588, !f1361

BURNER PRESSURE

{BLRSTATMAX}
ATTACH PRESSURE GAUGE TO BURNER PRESSURE TEST POINT

Next: p1352, f1353

THERMISTOR

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: p1356, !f1357

GAS RATE

Next: !p1358, !f1359

THERMISTOR

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: !p1381, !f1382

RESISTANCE BURNER EARTH WIRE

Next: !p1445, !f1767

RESISTANCE GAS VALVE AND HARNESS TO EARTH

DISCONNECT THE GAS V

Next: !p2231, f1479

EXTERNAL BYPASS

Next: !p1589, !f1590

RESISTANCE THERMISTOR TO EARTH

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: p2168, ?2169, ?2171

RESISTANCE GAS VALVE AND HARNESS TO EARTH

DISCONNECT THE GAS V

Next: !p2367, f2174

RESISTANCE IGNITION LEAD

DISCONNECT THE IGNITION LEAD ASSEMBLY CONNECTOR FROM THE SPARK ELECTRODE AND FROM THE PCB

Next: p2190, !f2188

OBSERVATION GAS VALVE PASSING

REMOVE BURNER
CONNECT U-GAUGE TO BURNER INJECTOR

Next: !p2192, !f2191

FUSE 2A

REMOVE THE FUSE FROM THE PCB

Next: p2209, f2210

THERMISTOR

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: p2213, !f2214

AIR PRESSURE SWITCH N/O

REMOVE THE LEADS FROM THE AIR PRESSURE SWITCH (MAKE A NOTE OF THE CONNECTIONS)

Next: p2215, f2216

RESISTANCE BURNER EARTH WIRE

Next: p2221, !f2222

VENTURI

Next: !p2219, !f2220

FAN HARNESS

DISCONNECT THE BLUE AND PURPLE LEADS FROM THE FAN
DISCONNECT THE 5 PIN PLUG AT THE PCB

Next: p2223, !f2224

PCB FURTHER INVESTIGATION

THE INFORMATION PROV

Next: !p2225, !f2226

OBSERVATION PUMP RUNNING

Next: p2248, f2246

PUMP LIMPET TEST

Next: p2249, !f2250

EXTERNAL BYPASS

Next: !p2251, !f2252

SPARKING PRESENT

EXTERNAL CONTROLS CALLING FOR HEAT
REMOVE THE COMBUSTION CHAMBER COVER

Next: p2287, f2288

FAN RUNS AT HIGH SPEED

EXTERNAL CONTROLS CALLING FOR HEAT

Next: p2275, f2276

FAN RUNS AT HIGH SPEED

EXTERNAL CONTROLS CALLING FOR HEAT

Next: p2267, f2268

GAS INLET PRESSURE

ATTACH PRESSURE GAUGE TO INLET PRESSURE TEST POINT
EXTERNAL CONTROLS CALLING

Next: p2271, !f2272

HEAT EXCHANGER FLUE WAYS

Next: !p2273, !f2274

IGNITION ELECTRODE AND GAP

DISCONNECT IGNITION LEAD TO THE ELECTRODE

Next: p2279, !f2280

HEAT EXCHANGER FLUE WAYS

Next: p2281, !f2282

IGNITION LEAD ASSEMBLY

DISCONNECT THE IGNITION LEAD ASSEMBLY CONNECTOR
FROM THE PCB AND ELECTRODE

Next: p2283, !f2284

FLUE

Next: !p2285, !f2286

BURNER PRESSURE

{BLRSTATMAX}
ATTACH PRESSURE GAUGE TO BURNER PRESSURE TEST POINT

Next: p2303, f2304

OBSERVATION SPARKING PRESENT APS MADE

Next: p2291, f2292

AIR PRESSURE SWITCH TUBES

Next: p2297, !f2298

RESISTANCE IGNITION LEAD

DISCONNECT THE IGNITION LEAD ASSEMBLY CONNECTOR
FROM THE PCB AND ELECTRODE

Next: !p2295, !f2296

VENTURI

Next: p2299, !f2300

FLUE

Next: !p2301, !f2302

BURNER INJECTOR

Next: !p2321, !f2322

GAS VALVE VOLTAGE

EXTERNAL CONTROLS CA

Next: p2307, f2308

RESISTANCE GAS VALVE AND HARNESS TO EARTH

DISCONNECT THE GAS V

Next: !p2317, f2318

RESISTANCE GAS VALVE AND HARNESS TO EARTH

DISCONNECT THE GAS V

Next: !p2313, f2314

EXTERNAL BYPASS

Next: p2335, !f2336

INSPECTION OVERHEAT THERMOSTAT

Next: p2329, !f2330

RESISTANCE OVERHEAT THERMOSTAT AND HARNESS

REMOVE THE OVERHEAT CONNECTOR FROM THE PCB
THIS IS THE CONNECTOR WHICH HAS THE 2 BROWN WIRES

Next: !p2331, f2332

OBSERVATION PUMP RUNNING

Next: p2337, f2338

PUMP LIMPET TEST

Next: p2341, !f2342

OBSERVATION RUN BOILER TO TEMP

{BLRSTATMAX}
ALLOW BOILER TO RUN AND BURNER TO IGNITE.

Next: !p2343, ?2345, ?2347

THERMISTOR

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: p2351, !f2352

THERMISTOR

DISCONNECT THE THERMISTOR CONNECTOR FROM THE PCB (BLACK LEADS)

Next: !p2349, !f2350

RESISTANCE OVERHEAT STAT AT TEMP

{BLRSTATMAX}

Next: !p2353, !f2354

System Information

Total Tests: 217

Sequence Logic: Decoded from encrypted .seq file

Navigation: Dynamic based on pass/fail results

Source: 4731307 GW SWIFTFLOW 100 SIT Control