Daikin Altherma 3 M - Page 190

3 | Components
Service manual
190
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
VDC Com Ref VDC Com Ref
U CB+ 0.560V CB+ U O.L
V CB+ 0.560V CB+ V O.L
W CB+ 0.560V CB+ W O.L
CB- U 0.560V U CB- O.L
CB- V 0.560V V CB- O.L
CB- W 0.560V W CB- O.L
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.
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 (or flip over) the protective cover sheet.
3 Unplug the compressor U, V and W Faston connectors from the main PCB.
4 Unplug the L1C, L2C and L3C Faston connectors from the main PCB.