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13.3 About cleaning the water filter in case of trouble
13.3.1 To remove the water filter
EPRA14~18D + ETBH/X16E
Daikin Altherma 3 H HT W
4P644736-1D – 2023.10
▪
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.
▪
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.
▪
Using an ohmmeter, check if contactors K1M, K2M, K3M and K5M (depending on
your installation) operate correctly. All contacts of these contactors must be in
open position when the power is turned OFF.
WARNING
If the internal wiring is damaged, it has to be replaced by the manufacturer, its
service agent or similarly qualified persons.
INFORMATION
For yearly maintenance, you do not have to remove the water filter from the unit to
clean it. But in case of trouble with the water filter, you might have to remove it so
that you can thoroughly clean it. Then you need to do as follows:
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"13.3.1 To remove the water
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"13.3.2 To clean the water filter in case of
▪
"13.3.3 To install the water
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 The water filter is located behind the switch box. To get access to it, see:
"7.2.6 To open the indoor
2 Close the stop valves of the water circuit.
3 Close the valve (if equipped) of the water circuit towards the expansion vessel.
4 Remove the cap on the bottom of the magnetic filter/dirt separator.
5 Connect a drain hose to the bottom of the water filter.
13
Maintenance and service
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