Daikin FTXF25B - Repair Procedures

2 | Components
Service manual
49
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
4 Set the Megger voltage to 500VDC or 1000VDC.
5 Measure the insulation resistance between the following terminals. The
measured insulation resistance MUST be >3MΩ.
▪ U–ground,
▪ V–ground,
▪ W–ground.
Compressor insulation measurements
are correct?
Action
Yes Compressor is OK. Return to
troubleshooting of the specific error
and continue with the next procedure.
No Replace the compressor, see
"2.2.2Repair procedures"[449].
2.2.2 Repair procedures
To remove the compressor
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.10Plate work"[4101].
Prerequisite: Remove the compressor insulation.
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see
"3.2.2Repair procedures"[4133].
1 If needed, remove any parts to create more space for the removal of the
compressor.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10VDC before proceeding.
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.