Daikin Altherma 3 M - Page 196

3 | Components
Service manual
196
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
To perform a power check of the noise filter PCB
Prerequisite: First perform a functionality check of the noise filter PCB, see
"Checking procedures"[4194].
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see "3.17Plate work"[4230].
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see "To prevent
electrical hazards"[4285].
2 Remove the 3 screws from the main PCB heat sink cover.
3 Lift and pull the cover to remove it from the heat sink.
a
a
a
b
c
f
f
d
f
e
f
a Heat sink cover screw
b Heat sink cover
c Wires U, V and W
d Ground wire screw
e Main PCB mounting plate
f Main PCB mounting plate fixation screw
4 Disconnect all connectors from the main PCB.
5 Loosen the screws to disconnect the U, V and W wires.
6 Cut all cable ties that fix cables to the main PCB mounting plate.
7 Loosen the screw to disconnect the ground wires from the main PCB
mounting plate.
8 Remove all main PCB mounting plate fixation screws.