12 | Maintenance and service
Installer reference guide
198
EVLQ05+08CAV3 + EHYHBH05AF + EHYHBH/X08AF + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1F – 2020.10
â–ª Check if nothing blocks the water in the valve or in between piping. The water
flow coming from the relief valve must be high enough.
â–ª Check if the water coming out of the relief valve is clean. If it contains debris or
dirt:
- Open the valve until the discharged water does not contain debris or dirt
anymore.
- Flush and clean the complete tank, including the piping between the relief
valve and cold water inlet.
To make sure this water originates from the tank, check after a tank heat up cycle.
INFORMATION
It is recommended to perform this maintenance more than once a year.
Switch box
Carry out a thorough visual inspection of the switch box and look for obvious
defects such as loose connections or defective wiring.
WARNING
If the internal wiring is damaged, it has to be replaced by the manufacturer, its
service agent or similarly qualified persons.
12.5 To disassemble the gas boiler
1 Turn off the appliance.
2 Turn off the main power supply of the appliance.
3 Close the gas tap.
4 Remove the front panel.
5 Wait until the appliance has cooled down.
6 Unscrew the coupling nut at the base of the flue pipe by turning
counterclockwise.
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