EN
Service
Troubleshooting
The list of faults/causes/possible solutions for a set of main failures is a guideline for professional personell authorised to carry out
service and maintenance. Irregular burner operation or malfunction: check that every adjustment parameter is correctly set as per
instruction on this manual.
The burner does not start.
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Main switch in "0".
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Fuses are blown.
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Boiler thermostats are in open position.
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Control box is defective.
The burner runs the prepurging but does not ignite and then switches into safety condition.
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Control box is defective.
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Ignition transformer is defective.
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Electrodes are dirty.
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Electrodes are defective.
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Electrodes are in wrong position.
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Nozzles are clogged.
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Nozzles are too worn.
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Filters are clogged.
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Oil pressure too low.
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Combustion air flow rate excessively high related to nozzle's flow rate.
The burner ignites but then switches into safety condition.
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Control box is defective.
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Nozzles are clogged.
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Nozzles are too worn.
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The photocell does not detect the flame.
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Filters are clogged.
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Oil pressure too low.
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Combustion air flow rate excessively high related to nozzle's flow rate.
The burner does not switch to High flame.
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1st(Low flame) and 2nd (High flame) stage manual switch on control board is in wrong position.
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Control box is defective.
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2nd (3rd) stage solenoid valve coil is defective.
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Oil pressure too low.
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Filters are clogged.
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2nd (3rd) stage nozzle is too worn.
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2nd (3rd) stage nozzle is clogged.
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Air damper motor jack not properly adjusted or defective.
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