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Bentone
172 615 06 2018-01-10
10. Troubleshooting
Gas Burner
Conditions favourable to disruption-free operation of the system can only
be guaranteed through the interaction between three factors – electricity,
gas flow and combustion air. A change in any of these factors may cause
disruptions.
It has been shown that a large proportion of disruptions can be attributed
to relatively small things. Therefore, before requesting servicing, you should
ascertain the following:
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 gas pressure to the burner sufficient?
5.
Are the burner controls on standby and not locked?
6.
Is air supply to the burner adequate?
To facilitate troubleshooting, we have created a table of the most common
faults that may arise in a gas burner system and how they should be
rectified.
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
Summary of Contents for STG 120/2
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