Symptom: The Burner Ignites Noisily; Symptom: The Burner Resonates; Symptom: No Space Heating By The Gas Boiler - Daikin Altherma EVLQ05+08CA Installer's Reference Manual

13 | Troubleshooting

13.3.12 Symptom: The burner ignites noisily

13.3.13 Symptom: The burner resonates

13.3.14 Symptom: No space heating by the gas boiler

Installer reference guide
210
Possible causes
Gas supply pressure too high.
Incorrect ignition gap.
Gas/air adjustment NOT correctly set.
Weak spark.
a Spark gap (±4.5 mm)
Possible causes
Gas supply pressure too low.
Recirculation of combustion gasses.
Gas/air adjustment NOT correctly set.
Possible causes
Heat pump error
Communication problem with the heat
pump.
Incorrect heat pump settings.
The service display displays " ", the gas
boiler is switched off.
No current (24 V)
The burner does NOT fire on space
heating: sensor S1 or S2 faulty.
Burner does NOT ignite.
Corrective action
The house pressure switch may be
faulty. Contact the gas company.
▪ Replace the ignition pin.
▪ Check the ignition electrode gap.
Check the setting. See
4
CO₂ setting" [ 177].
Check the ignition gap.
Replace the ignition electrode.
Replace the ignition unit on the gas
valve.
a
Corrective action
The house pressure switch may be
faulty. Contact the gas company.
Check the flue gas and the air supply.
Check the adjustment. See
4
the CO₂ setting" [ 177].
Corrective action
Check the user interface.
Make sure the communication cable is
properly installed.
Check the settings in the heat pump
manual.
Switch on the gas boiler with .
▪ Check the wiring.
▪ Check the connector X4.
Replace sensor S1 or S2. See
codes of the gas boiler" [
See "13.3.11 Symptom: The burner
4
does NOT ignite" [ 209].
EVLQ05+08CAV3 + EHYHBH05AF + EHYHBH/X08AF + EHYKOMB33AA
Daikin Altherma hybrid heat pump
"To check the
"To check
"Error
4
218].
4P355634-1F – 2020.10