To Drain The Domestic Hot Water Tank; About Cleaning The Water Filter In Case Of Trouble; To Remove The Water Filter - Daikin ERGA04EAV3A Installer's Reference Manual

13.4 To drain the domestic hot water tank

13.5 About cleaning the water filter in case of trouble

13.5.1 To remove the water filter

ERGA04~08EAV3(A) + EHBH/X04+08EA/EJ6V+9W
Daikin Altherma 3 R W
4P629085-1 – 2020.08
▪ 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.
Booster heater of the domestic hot water tank
INFORMATION
Only for wall-mounted units equipped with a domestic hot water tank with a built-in
electrical booster heater (EKHW).
It is recommended to remove lime buildup on the booster heater to extend its life
span, especially in regions with hard water. To do so, drain the domestic hot water
tank, remove the booster heater from the domestic hot water tank and immerse in
a bucket (or similar) with lime-removing product for 24 hours.
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:
▪
"13.5.1 To remove the water
▪
"13.5.2 To clean the water filter in case of
▪
"13.5.3 To install the water
Prerequisite: Stop the unit operation via the user interface.
13 Maintenance and service
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filter" [ 221]
trouble" [ 4 222]
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filter" [ 223]
Installer reference guide
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