Daikin Altherma EHVH04S23DAV - To Clean the Water Filter in Case of Trouble; To Install the Water Filter; 12 Troubleshooting; Overview: Troubleshooting

11 Maintenance and service
Installer reference guide
81
ERGA04~08DAV3(A) + EHVH04+08S23DAV
Daikin Altherma – Low temperature split
4P499573-1 – 2017.12
Anti-legionella heater of the domestic hot water tank
It is recommended to remove lime buildup on the anti-legionella
heater to extend its life span, especially in regions with hard water.
To do so, drain the domestic hot water tank, remove the anti-
legionella heater from the domestic hot water tank and immerse in a
bucket (or similar) with lime-removing product for 24 hours.
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.
Descaling
Depending on water quality and set temperature, scale can deposit
on the heat exchanger inside the domestic hot water tank and can
restrict heat transfer. For this reason, descaling of the heat
exchanger may be required at certain intervals.
Chemical disinfection
If the applicable legislation requires a chemical disinfection in
specific situations, involving the domestic hot water tank, please be
aware that the domestic hot water tank is a stainless steel cylinder.
We recommend to use a non-chloride based disinfectant approved
for use with water intended for human consumption.
NOTICE
When using means for descaling or chemical disinfection,
it must be ensured that the water quality remains compliant
with EU directive 98/83EC.
11.4.1 To drain the domestic hot water tank
DANGER: RISK OF BURNING
The water in the tank can be very hot.
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Close the cold water supply.
Prerequisite: Open all the hot water tapping points to allow air to
enter the system.
1 Remove the top panel, the user interface panel and the front
panel.
2 Connect a drain hose to the drain valve.
3 Open the drain valve.
a
a Drain valve
11.5 About cleaning the water filter in
case of trouble
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:
▪ "11.5.1To remove the water filter"on page81
▪ "11.5.2To clean the water filter in case of trouble" on
page82
▪ "11.5.3To install the water filter"on page82
11.5.1 To remove the water filter
Prerequisite: Turn OFF the unit 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:
▪ "7.2.3To open the indoor unit"on page30
▪ "7.2.5 To lower the switch box on the indoor unit" on
page31
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 water filter.
5 Connect a drain hose to the bottom of the water filter.
6 Open the valve on the bottom of the water filter to drain water
from the water circuit. Collect the drained water in a bottle, sink,
… using the installed drain hose.
7 Remove the 2 clips that fix the water filter.
aa b
a Clip
b Water filter
8 Remove the water filter.
9 Remove the drain hose from the water filter.
CAUTION
Although the water circuit is drained, some water may be
spilled when removing the water filter from the filter
housing. ALWAYS clean spilled water.
Final English - Tanslations in progress