PROBLEM |
| CAUSE |
| REMEDY | |
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LOCKOUT: |
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Pulsation on start |
| Combustion settings incorrect |
| Set up as in installation instructions | |
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| Faulty nozzle |
| Replace nozzle | |
Intermittent lockout |
| Bad electrical connection |
| Check control box/electrical connections | |
|
| Intermittent flame detection fault |
| See flame detection fault | |
Burner motor fails to |
| Faulty motor or electrical supply |
| Check for 230v at motor plug during | |
operate |
| to motor |
| startup period | |
|
| Control box fault |
| Replace control box | |
Flame detection |
| Photocell filmed over (dirty) |
| Wipe clean | |
fault |
| Photocell faulty |
| Replace | |
|
| Control box faulty |
| Replace | |
Incorrect CO2 |
| Air adjustment fault |
| Set up as in installation instructions | |
|
| Oil pressure incorrect |
| Set up as in installation instructions | |
No oil from nozzle |
| No oil at pump |
| Check and refill oil tank/bleed oil line | |
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| Check and clean filters & valves from oil | |
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| tank to boiler | |
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| Air in pump |
| Bleed pump | |
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| Nozzle blocked |
| Replace nozzle | |
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| Faulty pump or drive |
| Replace | |
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| Faulty mechanical shut off valve |
| Clean or replace | |
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| (12/18 & 18/25 only) |
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Ignition failure |
| Electrode settings incorrect |
| Set up as in installation instructions | |
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| Faulty ignition transformer |
| Replace | |
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| Open circuit ignition |
| Check and replace electrodes or high | |
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| tension leads if necessary | |
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| Faulty control box or electrical |
| Correct control box electrical | |
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| connections not properly made |
| connections or replace control box | |
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BURNER FAILS |
| No power to boiler |
| Check electrical / control circuit | |
TO START |
| Faulty boiler thermostat |
| Check by temporarily linking out high | |
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| limit and control thermostats | |
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| Programmer open circuit |
| Check by temporarily linking 8 & 9 on | |
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| the connector | |
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| Faulty control box |
| Replace | |
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HIGH SMOKE |
| Air intake/flue blocked |
| Check & clear air intake/flue | |
NUMBER |
| Incorrect combustion settings |
| Set up as in installation instructions | |
|
| Oil pressure incorrect |
| Adjust to correct pressure | |
|
| Incorrect components used on |
| Check with installation instructions | |
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| combustion head |
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| Faulty nozzle |
| Replace nozzle | |
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FAULT FINDING
BOILER LOCKOUT :
Indicated by the illumination of the 'Lockout' indicator on the fascia.
To reset, wait 2 minutes then press the lockout reset button.
Also refer to fault finding logic on pages 46 and 47.
FAULT FINDING | & DIAGRAMS |
UNDER NO CIRCUMSTANCES MUST AN APPLIANCE BE LEFT TO OPERATE WITH ANY CONTOL LINKED OUT OR OVERRIDDEN.
44
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL
