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Troubleshooting
Installer reference guide
181
C08AF + EHYKOMB33A
Daikin Altherma R Hybrid
4P471761-1E – 2020.10
13.3.15 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.
186].
Burner does NOT ignite.
See
179].
13.3.16 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.
13.3.17 Symptom: Space heating does NOT reach the temperature
Possible causes
Corrective action
Weather-dependent setpoint setting is
incorrect.
Check the setting on the user interface
and adjust if necessary.
Temperature is too low.
Increase the space heating
temperature.
No circulation in the installation.
Check whether there is circulation. At
least 2 or 3 radiators MUST be open.
The boiler power has NOT been
correctly set for the installation.
Adjust the power. See
145].
No heat transfer as a result of lime scale
or fouling in the heat exchanger.
Descale or flush the heat exchanger on
the space heating side.
13.3.18 Symptom: Hot water does NOT reach the temperature (no tank installed)
Not applicable for Switzerland
Possible causes
Corrective action
Domestic hot water flow is too high.
Adjust the inlet assembly.
Temperature setting for water circuit is
too low.
Increase the domestic hot water
setpoint on the domestic hot water
homepage of the user interface.
