Checking Procedures - Daikin altherma 3 M Service Manual

3.18.1 Checking procedures

To perform an electrical check of the reactor
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
electrical hazards" [
2 Visually check the reactor for any damage or burnt‑out components. If any
damage is found, replace the reactor, see
3 Check that the reactors are firmly installed on the main PCB.
4 Measure the resistance of the reactor using a low ohm multi meter.
Result: The resistance MUST be as follows:
Measuring points
d‑e
d
b
c
a L1R
b L2R
c L3R
d Measuring point
e Measuring point
Is the resistance measurement correct? Action
Yes
No
"3.17 Plate
4
285].
"3.18.2 Repair
Resistance
24~36 mΩ
a
d e
Proceed with the next step.
Replace the reactor, see
procedures" [
3 Components
|
4
work" [ 230].
"To prevent
4
procedures" [ 244].
e
e
d
"3.18.2 Repair
4
244].
Service manual
243