Overview: Maintenance And Service; Maintenance Safety Precautions; Checklist For Yearly Maintenance Of The Outdoor Unit; Checklist For Yearly Maintenance Of The Indoor Unit - Daikin ERGA08DAV3 Installer's Reference Manual

11 Maintenance and service
NOTICE
Applicable legislation on fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
Formula to calculate the quantity in CO
tonnes: GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
11.1 Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the outdoor unit
▪ The yearly maintenance of the indoor unit
11.2

Maintenance safety precautions

DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
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.
11.3 Checklist for yearly maintenance
of the outdoor unit
Check the following at least once a year:
▪ Heat exchanger
The heat exchanger of the outdoor unit can get blocked up due to
dust, dirt, leaves, etc. It is recommended to clean the heat
exchanger yearly. A blocked heat exchanger can lead to too low
pressure or too high pressure leading to worse performance.
11.4 Checklist for yearly maintenance
of the indoor unit
Check the following at least once a year:
▪ Water pressure
▪ Water filters
▪ 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
Water pressure
Keep water pressure above 1 bar. If it is lower, add water.
Water filters
Clean the water filters.
NOTICE
Handle the water filters with care. Do NOT use excessive
force when you reinsert the water filters so as NOT to
damage the water filters mesh.
Installer reference guide
76
equivalent.
equivalent
2
1 3
2
4
5
Magnetic filter/dirt separator
a
b
c
d
a Screw connection
b Magnetic sleeve
c Drain valve
d Drain cap
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
tightness, hold it firmly, so as NOT to apply stress to
the water piping.
▪ Do NOT isolate the magnetic filter/dirt separator by
closing the shut‑off valves. To properly empty the dirt
separator, sufficient pressure is required.
▪ To prevent dirt from remaining in the dirt separator,
ALWAYS take off the magnetic sleeve.
▪ ALWAYS first unscrew the drain cap, and connect a
drain hose to the bottom of the water filter, then open
the drain valve.
ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06