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Bentone
172 615 06 2018-01-10
9. 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?
2.
Are the fuses intact and is the power on?
3.
Are control devices (room thermostat, boiler thermostat, etc.) correctly set?
4.
Is there sufficient gas pressure to the burner?
5.
Are the burner controls on standby and not locked?
6.
Is there sufficient air supply to the burner?
Cause of fault
Action
Burner does not start:
No gas.
Make sure all gas taps are open.
No power.
Check the fuse, thermostat and electrical connections.
Burner motor does not start.
Motor protection has tripped. Motor faulty.
Burner control faulty.
Replace.
Burner motor running, no ignition spark at the end of pre-aeration:
No power in the terminals.
Check the connector. Replace faulty burner controls.
Ignition electrodes in contact with each other or earth.
Adjust.
Ignition electrode porcelain damaged.
Replace the electrodes.
Poor connection to cable connectors.
Adjust connection.
Ignition cables damaged.
Replace.
Transformer damaged, no power to secondary winding.
Replace the transformer.
Ignition cable and ionisation cable swapped around.
Reconnect.
No flame propagation:
Gas solenoid valve faulty.
Replace.
Gas solenoid valve does not open despite having power.
Replace solenoid valve terminals, or entire valve.
No power to solenoid valve.
Check the connection.
No electrical connection through air pressure gauge.
Check the air pressure gauge’s settings and functions.
Ignition load incorrectly set.
Increase/decrease gas supply Reduce airflow.
Burner control faulty
Replace
Air pressure gauge incorrectly set or faulty
Check the settings and reset, or replace
No acknowledgement signal due to incorrect adjustment or
misalignment of the control motor cams.
Check the settings and realign.
Burner trips after safety time limit despite flame propagation:
No ionisation current or UV cell incorrectly positioned.
Adjust ionisation electrode and UV cell Check cables and
connectors.
Burner control monitor faulty.
Replace burner control.
Voltage lower than 185V.
Contact an electrician.
Ignition electrodes disrupting ionisation current.
Adjust ignition electrodes. Re-polarise the transformer.
Poor earth connection.
Ensure adequate earth connection.
Phase and neutral swapped around.
Check wiring diagram and change accordingly.
Summary of Contents for BG 300-2
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