9 | Troubleshooting
User reference guide
55
EHYHBH05AF + EHYHBH/X05+08AF + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355632-1E – 2020.10
▪ When auto emergency is activated and a heat pump failure occurs, the boiler
will automatically take over the heat load.
▪ When auto emergency is not activated and a heat pump failure occurs, the
domestic hot water and space heating operations will stop and need to be
recovered manually. The user interface will then ask you to confirm whether the
boiler can take over the entire heat load or not.
When the heat pump fails, will appear on the user interface.
Possible cause Corrective action
Heat pump is damaged. ▪ Press to view a description of the
problem.
▪ Press again.
▪ Select to allow the gas boiler to
take over the entire heat load.
▪ Call your local dealer to get the heat
pump fixed.
INFORMATION
When the gas boiler takes over the entire heat load, gas consumption will be
considerably higher.
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