Mitsubishi Air Conditioner PURY-EP300YLM-A

Remove the two lock nuts on the control box

Loosen the other two nuts on the control box

Remove the three fixing screws on the service panel

Remove the nine machine screws on the ceiling panel

Upload a photo of the removed service panel

Note: Secure enough service space in the ceiling for welding operation, and conduct the work carefully. If required, dismount the unit from the ceiling, and conduct the work.

Sign off on the disassembling process

Remove both the top and bottom service panels (front panels)

Remove the control box and the compressor cover (front)

Remove the wires that are secured to the frame,and remove the frame

Remove the compressor cover (top)

Remove the compressor wires, compressor cover, and the right

Place protective materials on the insulation lining of the compressor cover and on the sealing material, on the compressor suction pipe to protect them from the torch flame, debraze the pipe, and replace the compressor

Sign off on the compressor disassembling

Warning: This procedure requires trained personnel with PPE!

For the pressure sensors PS1 and PS3, refer to 1. 1), 2).

Pressure sensor connector in trouble removed from the control board

New pressure sensor attached to the correct place

Connector inserted to the control board

Gas leaks from the pressure sensor?

R410A CITY MULTI R2 Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a, CV9a) replacement instructions.

* Following instructions show procedures for replacing service parts for Solenoid valve block ASSY (SV4a, SV4b,

SV4d), Check valve (CV4a, CV6a, CV8a, CV9a). Replace them properly according to the procedures.

2. Parts to be serviced, Set-content

- Check valve (CV4a,CV8a) - Service parts replacement instructions - KB00S879G32.

• Replacement instructions - WT07372X01.

- Check valve (CV6a) - Service parts replacement instructions - KB00S879G33.

• Replacement instructions - WT07372X01.