10 Maintenance And Service; Overview: Maintenance And Service; Maintenance Safety Precautions; Checklist For Yearly Maintenance Of The Indoor Unit - Daikin Altherma 3 H HT F Installation Manual

10 Maintenance and service
NOTICE
General maintenance/inspection checklist. Next to the
maintenance instructions in this chapter, a general
maintenance/inspection checklist is also available on the
Daikin Business Portal (authentication required).
The general maintenance/inspection
complementary to the instructions in this chapter and can
be used as a guideline and reporting template during
maintenance.
NOTICE
Maintenance MUST be done by an authorized installer or
service agent.
We recommend performing maintenance at least once a
year. However, applicable legislation might require shorter
maintenance intervals.
10.1 Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the outdoor unit
▪ The yearly maintenance of the indoor unit
10.2

Maintenance safety precautions

DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
NOTICE: Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
10.3 Checklist for yearly maintenance of
the indoor unit
Check the following at least once a year:
▪ Water pressure
▪ Magnetic filter/dirt separator
▪ Water pressure relief valve
▪ Relief valve hose
▪ Pressure relief valve of the domestic hot water tank
▪ Switch box
▪ Descaling
▪ Chemical disinfection
▪ Temperature and pressure relief valve
Water pressure
Keep water pressure above 1 bar. If it is lower, add water.
ETVH16SU18+23EA6V
Daikin Altherma 3 H HT F
4P644729-1 – 2021.02
Magnetic filter/dirt separator
checklist is
The yearly maintenance of the magnetic filter/dirt separator consists
of:
▪ Checking if both parts of the magnetic filter/dirt separator are
still screwed tight (a).
▪ Emptying the dirt separator as follows:
1 Take off the magnetic sleeve (b).
2 Unscrew the drain cap (d).
3 Connect a drain hose to the bottom of the water filter so that the
water and dirt can be collected in a suitable container (bottle,
sink...).
4 Open the drain valve for a couple of seconds (c).
Result: Water and dirt will come out.
5 Close the drain valve.
6 Screw the drain cap back on.
7 Reattach the magnetic sleeve.
8 Check the pressure of the water circuit. If required, add water.
NOTICE
▪ When checking the magnetic filter/dirt separator for
▪ Do NOT isolate the magnetic filter/dirt separator by
▪ To prevent dirt from remaining in the dirt separator,
▪ ALWAYS first unscrew the drain cap, and connect a
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:
▪
▪
▪
Water pressure relief valve
Open the valve and check if it operates correctly. The water may be
very hot!
Checkpoints are:
▪ The water flow coming from the relief valve is high enough, no
blockage of the valve or in between piping is suspected.

10 Maintenance and service

a
b
c
d
a Screw connection
b Magnetic sleeve
c Drain valve
d Drain cap
tightness, hold it firmly, so as NOT to apply stress to
the water piping.
closing the shut‑off valves. To properly empty the dirt
separator, sufficient pressure is required.
ALWAYS take off the magnetic sleeve.
drain hose to the bottom of the water filter, then open
the drain valve.
filter" [ 4 37]
"10.6.1 To remove the water
"10.6.2 To clean the water
trouble" [ 4 38]
filter" [ 4 38]
"10.6.3 To install the water
filter in case of
Installation manual
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