Daikin EBLA04E V Series, Service Manual, Page: 145 / 324

4 | Components
Service manual
145
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
a
a Booster heater contactor K3M
Are the measured voltages of the
booster heater contactor correct
(contacts closed)? Action
Yes Continue with the next step.
No Skip the next steps and continue with
the operating voltage check of the
contactor.
5 Deactivate booster heater test.
6 Measure the voltage between the following terminals of the booster heater
contactor.
▪ K3M: 1‑3
The measured voltages MUST be 0 V AC (contacts open).
Are the measured voltages of the
booster heater contactor correct
(contacts open)? Action
Yes Return to "4.5.1 Checking
procedures" [
4
142] of the booster
heater and continue with the next
procedure.
No Continue with the next step.
7 Measure the operating voltage on the contactor.
Result: The measured operating voltage MUST be:
▪ 230 V AC when the contacts should be closed.
▪
0 V AC when the contacts should be open.
Is the measured operating voltage of
the booster heater contactor correct? Action
Yes Replace the specific booster heater
contactor(s), see
"4.5.2 Repair
procedures" [
4
146].
draft – 31/05/2022 15:53