Further Troubleshooting - Winterwarm Qwikshift QSG Installation Manual

Case 13: Internal error.
• Isolate the electrical supply and reenergise. If this
does not help:
– Replace the burner control unit.
Case 14: Pressure switch is closed in stand-by mode.
• Check if the contact is stuck. If so:
– Replace the pressure switch.
• Check if there is water in the hose. If so:
– Dry the hose.
Case 15: Flame detected after closing the gas valve.
• Check if the gas valve closes too slow. If so:
– Replace the gas valve.
• Check if the ionisation electrode is wet. If so:
– Dry, clean or replace the electrode.
Case 16: Flame detected before opening the gas valve.
• Check if there really is a flame before ignition. If so:
– Replace the gas valve.
• Check if the ionisation electrode is wet. If so:
– Dry, clean or replace the electrode.
Case 19: Heater configuration error
• The heater does not know which program to run,
due to a mismatch between the burner control unit
and the display. If so:
– Contact your supplier.

9.5. Further troubleshooting

When the air heater does start but shows a different
problem than described above, check if the following
problems apply.
9.5.1. Explosive ignition and/or frequent flame failures
• Check if the gas control settings are correct (see
§8.1). A correct CO
ignition.
• Check the ignition cable. It should have a
resistance of 1 kΩ.
• Check the position of the ignition electrode.
The spark has to be formed between the two
electrodes, not between the electrode and the
burner.
9.5.2. Insufficient output
The heat output of the air heater is insufficient if there is
INSTALLATION MANUAL AIR HEATER TYPE QSG
value is important for a proper
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too much resistance in the inlet or outlet flue system. The
burner fan still rotates at full speed, but the resistance
prevents enough gas mixture from entering the burner.
• Check the flue system for blockage.
• Check the burner for dust or other pollution.
9.5.3. Non modulating system fan
System fan (M1) sometimes does not start or does not vary
in speed.
• Check the functioning of this fan by connecting it to
a supply of 230 V.
• Check if the fan is energised. Use a multi-meter.
If so, the cause of the problem lies in the burner
control unit.
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