4. Service procedures
(3)Checking the Electrical Parts
1 Power transformer (TR1) | Indoor unit *Measure the coil resistance. | ||
• | Primary | ; Measure the resistance between No.1 and No.3 | |
|
| (WHT lead wires) terminals of 3P (WHT) socket connected to | |
|
| power transformer. | |
• | Secondary 14.8V | ; Measure the resistance between No.1 and No.2 | |
|
| (RED lead wires). | |
| 14.8V | ; Measure the resistance between No.3 and No.4 | |
|
| (BRN lead wires). |
Refer to
2 Power transformer (TR) | .................... Outdoor unit *Measure the coil resistance. | ||
• | Primary | ||
|
|
| (WHT lead wires) terminals of 3P(WHT) socket jointed to power |
|
|
| transformer. |
• | Secondary | 14 V ; Measure the resistance between No.1 and No.2 | |
|
|
| (BRN lead wires). |
Refer to
3 Indoor fan motor (FMI) | Indoor unit *Measure the coil resistance. |
•Measure the resistance between each terminal of 7P (WHT) socket and 3P (YEL) socket connected to the indoor fan motor.
Refer to
4 Outdoor fan motor (FMO) | .....................Outdoor unit *Measure the coil resistance. |
•Measure the resistance in the same manner as explained above 3. Refer to
Section
1
2
3
4
SM830076
– 89 –