– 64 –
SM830078
12. SERVICE PROCEDURES
3)
Checking the Electrical Parts
1
1
1
1
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 “1–3–(A) Other component specifications”.
2
2
2
2
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 14 V
; Measure the resistance between two BRN lead wires.
Refer to “1–3–(B) Other component specifications”.
3
3
3
3
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 “1–2–(A) Major component specifications”.
4
4
4
4
4
Outdoor fan motor (FMO) ........... Outdoor unit
*Measure the coil resistance.
• Measure the resistance in the same manner as explained above
3
.
Refer to “1–2–(B) Major component specifications”.
5
5
5
5
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.
The range of deflection and the de-
flection time differ according to the
capacity of the capacitor.
Fan motor
capacitor
Compressor motor
capacitor
1041_X_S
Multimeter
Ω
NOTE
Fig. 18
