4
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Components
Service manual
152
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
Inverter voltage measurements are
correct?
Action
Yes
Continue with the next step.
No
Perform a check of the appropriate PCB,
see
99].
13
While compressor is operating, measure the current in each phase U, V and
W. ALWAYS measure at the PCB side.
Result:
All measurements MUST be the same.
Compressor motor winding current
measurements are correct?
Action
Yes
Perform an insulation check of the
compressor, see
No
Preventively replace the compressor,
see
To perform an insulation check of the compressor
Prerequisite:
First perform an electrical check of the compressor, see
148].
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Before proceeding:
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
254].
2
Remove the cover of the compressor wire terminals.
a
a
Compressor wire terminals cover
3
Disconnect the Faston connectors from the compressor wire terminals U, V
and W.
INFORMATION
Note the position of the Faston connectors on the compressor wire terminals to
allow correct connection during installation.
draft – 31/05/2022 15:53
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