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Troubleshooting
Installer reference guide
211
EHYH EHYHBH/X08AF + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1F – 2020.10
13.3.15 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.
13.3.16 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
175].
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.
13.3.17 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.
No heat transfer as a result of lime scale
or fouling in the heat exchanger
domestic hot water side.
Descale or flush the exchanger
domestic hot water side.
Cold water temperature <10°C.
The water inlet temperature is too low.
The domestic hot water temperature
fluctuates between hot and cold.
▪
The flow is too low. To guarantee
comfort, a minimum water flow of 5 l/
min is recommended.
▪
Increase the domestic hot water
setpoint on the domestic hot water
homepage of the user interface.
13.3.18 Symptom: Hot water does NOT reach the temperature (tank installed)
Possible causes
Corrective action
The gas boiler has an error code.
Check the display of the gas boiler for
more information.
The indoor unit has an error code.
Check for possible errors on the indoor
unit.
Summary of Contents for Altherma EVLQ05+08CA
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