Carrier 38MBR series Service Manual page 47

Outdoor unit single zone ductless system sizes 36 to 48
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DISASSEMBLY INSTRUCTIONS SIZE 48 (CONT)
CN2(yellow)
CN1(red)
CN6(black)
CN3(yellow)
U
V
W(black)
CN9(10p,white)
4) Remove the screws securing
the IPM board and remove
the IBM board.
5) Disconnect the connectors and
wires connected from the PCB
and other parts.
Connectors:
CN8: Discharge temperature sensor
(2p,white)
CN12
Heatsink temperature
sensor(2p,red)
CN9:T3/T4 temperature sensor
(2p/2p,white)
CN15: Electronic expansive valve
(6p,red)
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 or white)
CN3:N-IN (black)
47
CN1/CN3
CN17/CN18
CN19/CN20
CN24/CN25

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