Further Troubleshooting - Winterwarm DXE80 Installation Manual

Case 11: Insufficient air passage through the heat
exchanger. Pressure switch does not close.
• Check if the combustion fan is running.
• Check if the flue system is blocked or restricted.
• Check the pressure switch and the connections.
• Check the heat exchanger for flue leakage.
Case 12: E-error for more than 24 hours.
• Switch the air heater off and on and check the error
code.
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.
18

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.
value is important for a proper
2