Mitsubishi Electric PQHY-P72ZLMU-A Service Handbook page 367

[ IX Troubleshooting ]
4. Remove the acoustic insulation from the compressor.
HWE15150
Acoustic insulation
on the compressor
5.
- 358 -
Thermal insulation
on the accumulator
Remove or protect the wiring around the compressor
and the thermal insulation on the accumulator, unbraze
the pipe from the compressor, and replace the
compressor.
GB