Daikin EBLA04E V Series Service Manual page 144

4 | Components
To perform a check of the booster heater contactor(s)
Service manual
144
draft – 31/05/2022 15:53
Did the fuse blow or did the field
supplied circuit breaker of the booster
heater trip?
Yes
No
Prerequisite: First perform an electrical check of the booster heater, see
"4.5.1 Checking procedures" [
1 Measure the power supply voltage between the following terminals of the
booster heater contactor:
▪ K3M: 2‑4
The measured voltages MUST be 230 V AC ± 10%.
Is the measured power supply voltage
correct?
Yes
No
2 Check the power supply (source) of the booster heater.
Is the power supply (source) of the
booster heater correct?
Yes
No
3 With the Actuator test run still active, activate booster heater test.
4 Measure the voltage between the following terminals of the booster heater
contactor.
▪ K3M: 1‑3 / 2‑4
The measured voltages MUST be 230 V AC ± 10% (contacts closed).
Action
Replace the booster heater, see
"4.5.2 Repair
Return to "4.5.1 Checking
procedures" [
heater and continue with the next
procedure.
4
142].
Action
Skip the next step.
Continue with the next step.
Action
Correct the wiring and/or components
between the power supply (source) and
the booster heater contactor K3M, see
"7.2 Wiring
Adjust the power supply (source) of the
booster heater.
procedures" [ 4 146].
4 142] of the booster
diagram" [ 4 281].
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05