Daikin Altherma 3 M - Page 178

3 | Components
Service manual
178
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Are the test results OK? Action
Yes Power modules are OK. Return to
"Checking procedures"[4171] of the
main PCB and continue with the next
procedure.
No Replace the main PCB, see "Repair
procedures"[4178].
Problem solved?
After all checking procedures listed above have been performed:
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of the
specific error and continue with the
next procedure.
Repair procedures
To remove the main PCB
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "3.17Plate work"[4230].
1 Remove the 3 bolts from the main PCB heat sink cover.
2 Lift and pull the cover to remove it from the heat sink.
d
a
a
a
b
c
c
c
e
d d d
ddd
d
d
d
d
d
d
d
d
d
a Heat sink cover screw
b Heat sink cover
c Wires LC, NC, U, V and W
d PCB fixation screw
e Main PCB
3 Disconnect all connectors from the main PCB.