11. SERVICE PROCEDURES
2)Checking the Protective Devices
•Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device.
•Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 17.
•Normality of the protective device can be judged by the following table.
The Protective Device is proved normal if there is a continuity between terminals.
socket
Multimeter
Ω
Fig. 17
0642_X_S
1Indoor fan motor thermal protector (49FI) . . . . . . Indoor unit
•Disconnect the connector which leads to the indoor fan motor (FMI).
•Check the socket’s terminals.
2Compressor motor thermal protector . . . . . . Outdoor unit
•Disconnect the wires from terminals of compressor.
•Check the terminals of compressor.
3Outdoor fan motor thermal protector (49FO) . . . . . . Outdoor unit
•Disconnect both the connector which leads to the outdoor fan motor (FMO).
•Check socket’s terminal.
SM830079
– 42 –