Daikin Altherma 3 M Installer's Reference Manual page 233

EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620241-1 – 2020.06
INFORMATION
It is recommended to perform this maintenance more than once a year.
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.
WARNING
If the internal wiring is damaged, it has to be replaced by the manufacturer, its
service agent or similarly qualified persons.
14 Maintenance and service
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Installer reference guide
233