Daikin Altherma EHYKOMB33AA, Инструкция по установке и эксплуатации

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12 Troubleshooting
Installation and operation manual
35
EHYKOMB33A
Daikin Altherma hybrid heat pump – gas boiler module
4P353067-1K – 2020.10
12 Troubleshooting
If a malfunction occurs, is displayed on the home pages. You can
press
to display more information about the malfunction.
For the symptoms listed below, you can try to solve the problem
yourself. For any other problem, contact your installer. You can find
the contact/helpdesk number via the user interface.
12.1 General guidelines
Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the unit and look for obvious defects such as
loose connections or defective wiring.
12.2 Precautions when troubleshooting
WARNING
▪ When carrying out an inspection on the switch box of
the unit, ALWAYS make sure that the unit is
disconnected from the mains. Turn off the respective
circuit breaker.
▪ When a safety device was activated, stop the unit and
find out why the safety device was activated before
resetting it. NEVER shunt safety devices or change
their values to a value other than the factory default
setting. If you are unable to find the cause of the
problem, call your dealer.
DANGER: RISK OF ELECTROCUTION
WARNING
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
DANGER: RISK OF BURNING/SCALDING
12.3 Solving problems based on
symptoms
12.3.1 Symptom: The burner does NOT ignite
Possible causes Corrective action
Gas tap is closed. Open the gas tap.
Air in the gas tap. Remove air from the gas pipe.
Gas supply pressure too low. Contact the gas supply company.
No ignition. Replace the ignition electrode.
No spark. Ignition unit on gas
valve faulty. ▪ Check the cabling.
▪ Check the spark plug cap.
▪ Replace the ignition unit.
Gas/air adjustment NOT correctly
set. Check the adjustment. See "To
check the CO ₂ setting" [
4
29].
Fan faulty. ▪ Check the wiring.
▪ Check the fuse. If necessary,
replace the fan.
Fan dirty. Clean the fan.
Gas valve faulty. ▪ Replace the gas valve.
▪ Re-adjust the gas valve, see
"To check the CO ₂
setting" [
4
29].
12.3.2 Symptom: The burner ignites noisily
Possible causes Corrective action
Gas supply pressure too high. The house pressure switch may
be faulty. Contact the gas
company.
Incorrect ignition gap. ▪ Replace the ignition pin.
▪ Check the ignition electrode
gap.
Gas/air adjustment NOT correctly
set. Check the setting. See "To check
the CO ₂ setting" [
4
29].
Weak spark. Check the ignition gap.
Replace the ignition electrode.
Replace the ignition unit on the
gas valve.
28.3~30.2 mm
a
a Spark gap (±4.5 mm)
12.3.3 Symptom: The burner resonates
Possible causes Corrective action
Gas supply pressure too low. The house pressure switch may
be faulty. Contact the gas
company.
Recirculation of combustion
gasses. Check the flue gas and the air
supply.
Gas/air adjustment NOT correctly
set. Check the adjustment. See "To
check the CO ₂ setting" [
4
29].
12.3.4 Symptom: No space heating by the gas
boiler
Possible causes Corrective action
Heat pump error Check the user interface.
Communication problem with the
heat pump. Make sure the communication
cable is properly installed.
Incorrect heat pump settings. Check the settings in the heat
pump manual.
The service display displays " ",
the gas boiler is switched off. Switch on the gas boiler with .
No current (24 V) ▪ Check the wiring.
▪ Check the connector X4.
The burner does NOT fire on
space heating: sensor S1 or S2
faulty. Replace sensor S1 or S2. See
"Error codes of the gas
boiler"
[
4
36].
Burner does NOT ignite. See "12.3.1 Symptom: The
burner does NOT ignite" [
4
35].
12.3.5 Symptom: The power is reduced
Possible causes Corrective action
At high rpm, the power has fallen
by more than 5%. ▪ Check the appliance and flue
system for fouling.
▪ Clean the appliance and flue
system.