Fujitsu ACUH09LUAS1, Service Manual

Page: 95 / 153

¢ Models: AOUH12LUAS1 and AOUH18LUAS1
Check point 1. Check connection
Check terminal connection of compressor.
(loose or incorrect wiring)
R(U)
S(V)
(WHITE)
T(W)
(BLACK)
(RED)
Terminal cover opened
Check point 2. Check winding resistance
Check winding resistance of each terminal.
Resistance value: 1.916 ±8 % Ω at 68 °F (20 °C)
C
S
R
If the resistance value is 0 Ω or infinite, replace compressor.
Check point 3. Replace inverter PCB
If check point 1 to 2 do not improve the symptom, replace main PCB.
4-2. Inverter compressor
- (03-47) -
4. Service parts information
TR
O
U
B
LESH
O
O
TI
N
G
TR
O
U
B
LESH
O
O
TI
N
G