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Carrier 38MARBQ12AA3 - PCB Board 4

Carrier 38MARBQ12AA3
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SG-38MARB-01 Specifications subject to change without notice. 93
Procedure Illustration
1) Remove the top cover screws (2).
2) Loosen the hooks (4) and open the
electronic control box cover.
3) Disconnect the fan motor connector
from the electronic control board.
4) Remove the compressor connector.
5) Pull out the two blue wires connected
to the 4-way valve.
6) Pull out condenser connectors
coil temp. sensor(T3), outdoor
ambient temp. sensor(T4) and
the discharge temp. sensor.
7) Disconnect the electronic expansion
valve wire.
8) Remove the electronic control board.
Compressor
T3, T4, TP
Electronic Expansion Valve
4-Way Valve

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