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Bentone
172 615 06 2018-01-10
13. 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.
Summary of Contents for STG 146i/2
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