User's Manual

SM830043
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4
4. Service procedures
Fig. 47
Multimeter
Fan motor
Capacitor
0643_X_S
(3) Checking the Electrical Parts
1 Power transformer (TR1) ................. Indoor unit *Measure the coil resistance.
• Primary 220-240 V ; Measure the resistance between two WHT lead wire
terminals of socket connected to power transformer.
• Secondary 10.6V ; Measure the resistance between two BRN lead wires.
Refer to “1–3–(A) Other component specifications”.
2 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 “1–2–(A) Major component specifications”.
3 Outdoor fan motor (FMO) ........... Outdoor unit *Measure the coil resistance.
• Measure the resistance in the same manner as explained above 2.
Refer to “1–2–(B) Major component specifications”.
4 Fan 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. 47. Observe the deflection of the pointer,
setting the resistance measuring range of the multimeter
to the maximum value.
• The capacitor is “acceptable” if the pointer bounces to a
great extent and then gradually returns to its original
position.
NOTE
The range of deflection and the deflection time differ according to
the capacity of the capacitor.