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14. Troubleshooting
Conditions favourable to trouble-free operation of the system can only be
guaranteed through the interaction between three factors: electricity, gas flow and
combustion air. If any of these factors change, it may cause a malfunction.
Before requesting servicing, check the following points:
1.
Are the system's gas taps open?
Are the fuses intact and is the power on?
2.
Are control devices (room thermostat, boiler thermostat, etc.) correctly set?
3.
Is there sufficient gas pressure to the burner?
4.
5.
Are the burner controls on standby and not locked?
6.
Is there sufficient air supply to the burner?
Cause of fault
Burner does not start:
No gas.
No power.
Burner motor does not start.
Burner control faulty.
Burner motor running, no ignition spark at the end of pre-aeration:
No power in the terminals.
Ignition electrodes in contact with each other or earth.
Ignition electrode porcelain damaged.
Poor connection to cable connectors.
Ignition cables damaged.
Transformer damaged, no power to secondary winding.
Ignition cable and ionisation cable swapped around.
No flame propagation:
Gas solenoid valve faulty.
Gas solenoid valve does not open despite having power.
No power to solenoid valve.
No electrical connection through air pressure gauge.
Ignition load incorrectly set.
Burner control faulty
Air pressure gauge incorrectly set or faulty
No acknowledgement signal due to incorrect adjustment or
misalignment of the control motor cams.
Burner trips after safety time limit despite flame propagation:
No ionisation current or UV cell incorrectly positioned.
Burner control monitor faulty.
Voltage lower than 185V.
Ignition electrodes disrupting ionisation current.
Poor earth connection.
Phase and neutral swapped around.
50
Bentone
Action
Make sure all gas taps are open.
Check the fuse, thermostat and electrical connections.
Motor protection has tripped. Motor faulty.
Replace.
Check the connector. Replace faulty burner controls.
Adjust.
Replace the electrodes.
Adjust connection.
Replace.
Replace the transformer.
Reconnect.
Replace.
Replace solenoid valve terminals, or entire valve.
Check the connection.
Check the air pressure gauge's settings and functions.
Increase/decrease gas supply Reduce airflow.
Replace
Check the settings and reset, or replace
Check the settings and realign.
Adjust ionisation electrode and UV cell Check cables and
connectors.
Replace burner control.
Contact an electrician.
Adjust ignition electrodes. Re-polarise the transformer.
Ensure adequate earth connection.
Check wiring diagram and change accordingly.
172 615 06 2018-01-10
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