Glowworm Lighting 40 manual Yes

Page 29

13 Fault Finding

1

Reconnect supply

PM5

Is APS neon lit ?

YES

NO

YES

Is fan running ?

NO

 

 

 

 

Replace APS

 

 

 

Is there 240V at the fan ?

 

Has boiler been

 

NO

 

 

operating for 10

 

Is there 240V

NO

NO

seconds yet ?

 

Replace ignition

 

 

 

YES

 

at C ?

PCB

 

 

YES

 

 

 

 

 

 

Switch High/Low Switch

NO

Will flue hood

NO

 

to 'low'

 

Is there a spark at

 

thermostat reset?

Replace flue hood

 

 

- is there 240V at

thermostat

 

electrode ?

 

the fan?

 

 

 

 

 

YES

 

YES

 

 

YES

Replace fan

 

 

 

 

Flue hood overheating-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

Does gas ignite ?

 

 

 

 

 

 

 

 

blocked secondary heat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

exchanger (clean/replace)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

Can the “low” gas

 

 

 

 

NO

 

 

 

pressure be set

 

 

 

 

 

 

 

 

Isolate supply

 

(see data tables)

 

 

 

 

 

 

 

 

 

at test point on gas

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valve?

 

 

Does discharge tube on

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

ignition PCB flash ?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check continuity of

both main coils

Coils ok?

YES

NO

Does gas

ignite?

NO

Faulty injector

Replace

YES

3 YES

Examine electrode and leads. Repair/replace as necessary

Replace PCB

Replace ignition

PCB

Replace as necessary

Diagram 13.1

29

221834B

Page 28 Page 30
Image 29
Page 28 Page 30
Contents
Energysaver Guarantee RegistrationCE Mark Important InformationInstructions for Use Cleaning Boilers Installed in a Compartment or CupboardBoiler Clearances Protection Against FreezingTo Turn the Boiler On Overheat Safety CutoffTo Turn the Boiler Off Condensation PlumingSheet Metal Parts Statutory Requirements GeneralBSI Certification Range RatingElectrical Supply Gas SupplyCondensate Heating System ControlsWater System Flow Boiler MAX Expansion VesselPressure Gauge Water SytemWater Makeup Filling a Sealed Water SystemBoiler Location Rear Flue Lengths FlueTerminal Guard Terminal PositionRear and Side Flue Application Unpacking diagramPreparation Wall Mounting Bracket Flue Hole CuttingCondensate Connection Water and Condensate ConnectionsWater Connections Flue Installation Flue Duct If a wall liner is used, fit self adhesive seal as follows Wall LinerElectrical Connection Gas ConnectionPump and External Controls Connection Testing ElectricalTesting Gas Initial Lighting, Testing and AdjustmentCommissioning Preliminaries-All SystemsHeating System User InformationCondensate Check Operational ChecksServicing Heat Exchanger CleaningInjector BurnerSpark Electrode Condensate DrainCondensate Sensor Fault FindingElectrical Pump Overrun Operation Is there YES Does High neon light ? Faulty injector ReplaceFaulty PCB flame detection KEY Fault Finding Condensate Sensor diagram Replacement of PartsIgnition Lead diagram Control PCB diagram 14.3 top Printed Circuit Boards PCBs diagramInterconnecting PCB ICB diagram 14.3 bottom Control Thermostat diagram 14.4AAir Pressure Switch diagram High/Low Control diagram 14.4Heat Exchanger diagram Multifunctional Control diagramHeat Exchanger Secondary diagram 14.8 FanBurner diagram Heat Exchanger Primary diagramInsulation Combustion Chamber Front Panel diagram Insulation Rear diagramInsulation Sides diagram Viewing Window Glass diagramDescription GC Part No Spare PartsSpare Parts 6291