UPDATED A5 Panasonic technical handbook F 2025 - Flipbook - Page 165
Outdoor DC Fan Motor
Outdoor PCB check
Check fuse F4
1 : Turn off the power.
2 : Disconnect the outdoor unit fan motor connector .
3 : Reinstate the power supply,
: Start the indoor unit .
: If the voltage is not detected, the outdoor PCB is defective, but the fan motor needs checking as well.
Conduct both tests
while disconnected.
1
4
5
6
Yellow
Blue
Measuring
Point CEFAN
White
Black
Red
FMo
Voltage
when normal
1 to 4
DC 308 j 336V
3 to 4
DC 15V
6 to 7
DC several V ( 4 j 7V )
7
Measuring
Point (Motor side)
Outdoor PCB
CN-FM
DC308 ~ 336V
165
GND
DC15V
DC several V ( 4 ~ 7V )
Resistance
when normal
6 to 4 Red j Black
>1 M' or higher
3 to 4 White j Black
>20 K' or higher
