Compressor - Daikin 2MXM50M Service Manual

ESIE16-02B | Part 2. Troubleshooting

2.4.2.2. Compressor

Technical specification
Type: inverter driven, swing double swing.
Location
Piping diagram
See "Outdoor unit" on
page 104.
Check procedure
Preliminary check
1. Check if the Daikin unit is connected to earth.
2. Check if the stop valve is open.
Mechanical check
PRELIMINARY ACTIONS
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required (refer to
PROCEDURE
1. Open the compressor insulation.
2. Check if the condition of the compressor dampers and piping is correct.
Electrical check
PRELIMINARY ACTIONS
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required.
PROCEDURE
1. Open the compressor insulation.
2. Switch on the Daikin unit and measure the U, V, W inverter voltages. All voltages must be identical, if not, replace the inverter
PCB.
3. Switch off the Daikin unit via the user interface.
4. Switch off the Daikin unit with the field supplied circuit breaker.
I
NFORMATION
Note the position of the cables on the compressor wire terminals to allow identical wiring during reinstallation.
5. Disconnect the Faston connectors U, V and W from the compressor, take picture.
6. Measure the compressor motor windings U-V, V-W and U-W.
4/04/17 | Version 1.1
RA R32 Split & multi split M-Series
Wiring diagram
See "Outdoor unit" on
page 99.
"Basic removal" on page
Description
The compressor compresses the refrigerant in the refrigerant cir-
cuit.
Switch box
See "Outdoor unit" on
page 111.
68).
2.4. Component checklist
Component overview of unit
See "Outdoor unit" on page 110.
Page 47