11. SERVICE PROCEDURES

3)Checking the Electrical Parts

1 Power transformer (TR1)

Indoor unit *Measure the coil resistance.

Primary 230-208 V ; Measure the resistance between two WHT lead wire terminals of socket connected to power transformer.

Secondary 10.6 V ; Measure the resistance between two BRN lead wires.

Refer to “2. (3) (A) Other component specifications”.

2 Power transformer (TR)

Outdoor unit *Measure the coil resistance.

Primary 230-208 V ; Measure the resistance between two WHT lead wire terminals of socket jointed to power transformer.

Secondary 19 V ; Measure the resistance between two BRN lead wires.

Refer to “2. (3) (B) Other component specifications”.

3 Indoor fan motor (FMI)

Indoor unit

*Measure the coil resistance.

Measure the resistance between each terminal of the socket connected to the indoor fan motor.

Refer to “2. (2) (A) Major component specifications”.

4 Outdoor fan motor (FMO)

Outdoor unit

*Measure the coil resistance.

Measure the resistance in the same manner as explained above 2. Refer to “2. (2) (B) Major component specifications”.

5 Motor capacitor

Both in indoor and outdoor unit

Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in Fig. 18. Observe the deflec- tion of the pointer, setting the resis- tance measuring range of the multim- eter to the maximum value.

The capacitor is “good” if the pointer bounces to a great extent and then gradually returns to its original posi- tion.

NOTE

The range of deflection and the deflection time differ according to the capacity of the capacitor.

Multimeter

Ω

Compressor motor capacitor

Fan motor capacitor

Fig. 18

1041_X_S

 

SM830079

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Image 43
Sanyo C1852 Indoor fan motor FMI Indoor unit Measure the coil resistance, Motor capacitor Both in indoor and outdoor unit

XS1852, CL1852, C1852 specifications

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