8-2. Checking Motor Capacitor
Remove the lead wires from the capacitor terminals, and
then place a probe on the capacitor terminals as shown in
Fig. 4. Observe the deflection of the pointer, setting the
resistance measuring range of the multimeter to the
maximum value.
The capacitor is “good” if the pointer bounces to a great
extent and then gradually returns to its original position.
The range of deflection and deflection time differ according
to the capacity of the capacitor.
8-3. Checking Fan Motor Winding
Referring to the electrical diagram, disconnect fan motor
connectors, and measure the resistance between each lead
wire with a tester.
The tester should be set in the X1 range. If the fan motor is
hot, allow a few minutes until it gets cooled down.
When the resistances between each lead wire are those
listed in "2-2. Major Component Specifications" the fan
motor should be normal.
8-4. Checking Compressor Motor
Winding
Checking compressor motor winding can be done in the
similar manner.
Remove the terminal cover of the compressor motor, set the
resistance measuring range of the multimeter to "X1
Ω
" and
check the continuity between each pair out of the
3 terminals as shown in Fig. 5.
Refer to "2-2. Major Component Specifications" for coil
resistance.
18
Compressor motor
capacitor
Fan motor
capacitor
Multimeter
Fig. 4
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Compressor motor
coil terminal
Multimeter
Fig. 5
