119
Bentone
Cause of fault
Action
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.
Burner trips during pre-aeration:
Air sensor faulty or incorrectly set.
Increase/decrease air setting. Reduce air volume.
Ignition load incorrectly set.
Increase/decrease gas supply Reduce airflow.
Gas pressure too low.
Increase pressure. If necessary, contact gas supplier.
Pulsations at start-up:
Ignition electrodes incorrectly set.
Adjust .
Gas pressure too high.
Check and adjust using pressure gauge and pressure
control valve.
Flue gas side blocked.
Check the chimney flue.
Burner pulsates during operation:
Burner incorrectly set.
Adjust.
Burner dirty.
Clean the burner.
Incorrect chimney.
Check and modify dimensions if necessary.
Burner functioning properly but with occasional blockage:
Ionisation current too low.
Check. Must be at least 6µA, but should ideally lie
between 8-20µA.
UV cell incorrectly positioned.
Adjust.
Voltage drop at certain times.
Must not drop below 15% of rated voltage. Contact an
electrician if necessary.
Incorrectly set or faulty air sensor.
Check the settings and reset, or replace.
Ignition electrode overload.
Replace.
Burner control ambient temperature too high.
Insulate for heat, Max. 60 °C.
Ignition spark too weak.
Check the transformer.
Summary of Contents for STG 146i/2
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