14 | Maintenance and service
Installer reference guide
255
ERLA11~16DAV3+W1 + EBVH16SU23DJ
Daikin Altherma 3 R F
4P655196-1 – 2021.09
14.2 Yearly maintenance
14.2.1 Yearly maintenance outdoor unit: overview
Check the following at least once a year:
▪ Heat exchanger
14.2.2 Yearly maintenance outdoor unit: instructions
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.
14.2.3 Yearly maintenance indoor unit: overview
▪ 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
▪ Pressure reducing valve of the domestic hot water tank kit
▪ Temperature and pressure relief valve
14.2.4 Yearly maintenance indoor unit: instructions
Water pressure
Keep water pressure above 1bar. If it is lower, add water.
Magnetic filter/dirt separator
a Screw connection
b Magnetic sleeve
c Drain valve
d Drain cap
The yearly maintenance of the magnetic filter/dirt separator consists of:
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