Sanyo TH3642 / CH3642, XH3642 / CH3642 Service procedures Checking the Protective Devices

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. IV-18.

•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. IV-18

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.

SM830082

4

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