Midea MCH2U-18PHH2 Service Manual page 129

CN8: Discharge temperature sensor
(2p,white)
CN12：Heatsink temperature
sensor(2p,red)
CN9:T3/T4 temperature sensor
(2p/2p,white)
CN11:T2B-A,B,C,D,E temperature
sensor (2p/2p/2p/2p/2p,white)
CN15/CN23/CN26/CN30/CN33:
Electronic expansive valve
(6p/6p/6p/6p/6p,red)
CN37/CN29/CN21/CN16/CN13: S-
A,S-B,S-C,S-D,S-E
(3p/3p/3p/3p/3p,white)
CN10: High and low pressure switch
(2p/2p, white)
Wires:
CN17/CN18: 4-way valve (blue-blue)
CN19/CN20: connected to crankcase
heating cable. (black-red)
CN24/CN25: Electric heater of
chassis (orange-orange)
CN1:L-IN (red)
CN3:N-IN (black)
6) Disconnect the
grounding wire (yellow-green)
after removing the big handle.
7) Remove the PCB board.
129