SM830043
– 69 –
4
4. 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. 46.
• 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.
1 Indoor fan motor thermal protector (49FI) . . . . . . Indoor unit
• Disconnect the connector which leads to the indoor fan motor (FMI).
• Check the socket’s terminals.
2 Compressor motor thermal protector (49C) . . . . . . Outdoor unit
• Disconnect both the connectors in the outdoor unit.
• Check terminal between the plug and socket.
3 Outdoor fan motor thermal protector (49FO) . . . . . . Outdoor unit
• Disconnect both the connector which leads to the outdoor fan motor (FMO).
• Check socket’s terminal.
Fig. 46
Ω
socket
Multimeter
0642_X_S
