Symptom: The Power Is Reduced; Symptom: Space Heating Does Not Reach The Temperature; Symptom: Hot Water Does Not Reach The Temperature (No Tank Installed); Symptom: Hot Water Does Not Reach The Temperature (Tank Installed) - Daikin Altherma EVLQ05+08CA Installer's Reference Manual

13.3.15 Symptom: The power is reduced

13.3.16 Symptom: Space heating does NOT reach the temperature

13.3.17 Symptom: Hot water does NOT reach the temperature (no tank installed)

13.3.18 Symptom: Hot water does NOT reach the temperature (tank installed)

EVLQ05+08CAV3 + EHYHBH05AF + EHYHBH/X08AF + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1F – 2020.10
Possible causes
At high rpm, the power has fallen by
more than 5%.
Possible causes
Weather-dependent setpoint setting is
incorrect.
Temperature is too low.
No circulation in the installation.
The boiler power has NOT been
correctly set for the installation.
No heat transfer as a result of lime scale
or fouling in the heat exchanger.
Not applicable for Switzerland
Possible causes
Domestic hot water flow is too high.
Temperature setting for water circuit is
too low.
No heat transfer as a result of lime scale
or fouling in the heat exchanger
domestic hot water side.
Cold water temperature <10°C.
The domestic hot water temperature
fluctuates between hot and cold.
Possible causes
The gas boiler has an error code.
The indoor unit has an error code.
13 Troubleshooting
|
Corrective action
▪ Check the appliance and flue system
for fouling.
▪ Clean the appliance and flue system.
Corrective action
Check the setting on the user interface
and adjust if necessary.
Increase the space heating
temperature.
Check whether there is circulation. At
least 2 or 3 radiators MUST be open.
Adjust the power. See "Maximum space
heating power setting" [
Descale or flush the heat exchanger on
the space heating side.
Corrective action
Adjust the inlet assembly.
Increase the domestic hot water
setpoint on the domestic hot water
homepage of the user interface.
Descale or flush the exchanger
domestic hot water side.
The water inlet temperature is too low.
▪ 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.
Corrective action
Check the display of the gas boiler for
more information.
Check for possible errors on the indoor
unit.
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Installer reference guide
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