Winterwarm XR - Further Troubleshooting

21
INSTRUCTION MANUAL AIR HEATER TYPE XR
• The heat exchange sensor consists of two internal
sensors. The readings of these sensors may dier
too much:
– Measure the resistance of each sensor. The
resistance should be 20 KΩ at 25 °C and 25
KΩ at 20 °C.
– If the measured values dier too much,
replace the sensor.
Case 5: Too many flame failures while burning.
• The gas supply is not constant. This results in a
drop in gas supply pressure while burning and
causes the flame to extinguish.
– Check the gas supply pressure while the
heater is burning.
• The burner pressure for Low fire is too low. This
causes the flame to extinguish because it is too
small to be detected.
– Check the burner pressure at Low fire and
adjust if necessary (see §8.1).
• Recirculation of flue gas. Due to a problem with the
flue terminal the flue gas is sucked back into the air
inlet. This results into a lack of oxygen and causes
the flame to stop.
– Check the flue system and fresh air supply.
Only certified, original parts should be used.
Case 6: Burner fan does not work.
• Check if the burner fan is blocked.
• Check if the wiring is damaged.
• The burner fan is defective.
Case 7: Burner fan rotates at the wrong speed.
• Check if the burner fan runs smoothly.
• Check if the wiring is damaged.
Case 9: Too many reset actions in a short timespan.
• This error will disappear after some time or if the
main power is disconnected for a while.
Case 11: Insucient 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 o 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.
9.5 Further troubleshooting
When the air heater does start but shows a dierent
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
2
value is important for a proper
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.