Daikin ERLA03DAV3, Installer'S Reference Manual, Page: 149 / 192

12 | Maintenance and service
Installer reference guide
149
ERLA EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1A – 2020.05
12.3 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.
12.4 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.
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