2 Components
Service manual
21
ATXP20~3 FTXP20~7 ARXP20~3
RXP20~71L2V1B
Split Comfora R32
ESIE18-01 – 2019.02
a
a
Compressor wire terminals cover
4
Disconnect the Faston connectors from the compressor wire
terminals U, V and W.
a
a
a
a
Faston connectors
INFORMATION
Note the position of the Faston connectors on the
compressor wire terminals to allow correct connection
during installation.
5
Measure the resistance between the compressor motor
windings U-V, V-W and U-W. All measurements MUST be the
same.
6
Re-connect the Faston connectors and run the compressor.
7
Measure the current in each phase U-V, V-W and U-W. All
measurements MUST be the same.
Compressor motor winding
measurements are correct?
Action
Yes
Perform an insulation check of
the compressor, see
"2.2.1 Checking procedures" on
page 20
.
No
Replace the compressor, see
"2.2.2 Repair procedures" on
page 22
.
To perform an insulation check of the compressor
Prerequisite:
First perform an electrical check of the compressor,
see
"2.2.1 Checking procedures" on page 20
.
Prerequisite:
Turn OFF the unit via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
.
1
Open the compressor insulation.
WARNING
The smoothing capacitor MUST discharge below 10 V DC
before disconnecting the Faston connectors from the
compressor wiring terminals. Risk of electrocution.
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.
a
a
a
a
Faston connectors
INFORMATION
Note the position of the Faston connectors on the
compressor wire terminals to allow correct connection
during installation.
4
Set the Megger voltage to 500 V DC or 1000 V DC.
5
Connect the Megger ground test lead directly to the compressor
ground wire.
