Yearly Maintenance; Yearly Maintenance Outdoor Unit: Instructions; Yearly Maintenance Indoor Unit: Overview; Yearly Maintenance Indoor Unit: Instructions - Daikin ERGA06EAV3H Installer's Reference Manual

14 | Maintenance and service

14.3 Yearly maintenance

14.3.1 Yearly maintenance outdoor unit: instructions

14.3.2 Yearly maintenance indoor unit: overview

14.3.3 Yearly maintenance indoor unit: instructions

Installer reference guide
252
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.
DANGER: RISK OF BURNING/SCALDING
The water in the storage tank and all the connected piping can be very hot.
▪ Water pressure
▪ Magnetic filter/dirt separator
▪ Water pressure relief valve
▪ Relief valve hose
▪ Switch box
▪ Storage tank water level
Water pressure – Space heating/cooling circuit
Keep water pressure above 1 bar. If it is lower, add water.
Magnetic filter/dirt separator
NOTICE
The optional magnetic filter/dirt separator requires yearly maintenance. Follow the
instruction of the manual of the optional equipment.
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.
▪ Dirty water coming out of the relief valve:
- open the valve until the discharged water does NOT contain dirt anymore
- flush the system
It is recommended to do this maintenance more frequently.
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.
ERGA04~08EAV3+V3A+V37 + EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
4P678716-1 – 2022.01