– 43 – SM830079
11. SERVICE PROCEDURES
Fan motor
capacitor
Compressor motor
capacitor
1041_X_S
Multimeter
Ω
Fig. 18
3) Checking the Electrical Parts
11
11
1Power transformer (TR1) ................. Indoor unit *Measure the coil resistance.
• Primary230-208 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”.
22
22
2Power 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”.
33
33
3Indoor 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”.
44
44
4Outdoor 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”.
55
55
5Motor 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.
The range of deflection and the deflection
time differ according to the capacity of the
capacitor.
NOTE