Mitsubishi Electric MXZ-4C36NAHZ Technical & Service Manual page 156

OPERATING PROCEDURE
6. Removing the thermistors
Thermistor <HIC> (TH2) and thermistor <Compressor>
(TH4)
Thermistor <Outdoor pipe> (TH3)
7. Removing the 4-way valve coil (21S4)
[Removing the 4-way valve coil]
8. Removing the 4-way valve
1. Recover refrigerant without spreading it in the air.
2. The welded part can be removed easily by removing
the right side panel.
3. When installing the four-way valve, cover it with a wet
cloth to prevent it from heating 248°F (120°C) or more, then
braze the pipes so that the inside of pipes are not oxidized.
OCH573E
PHOTOS/FIGURES
Photo 9-1
Photo 9-2
Photo 10