AirStage AO54FJ, Service Manual

Page: 98 / 169

Trouble shooting 25
OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method:
COMPRESSOR ROTOR LOCATION
DETECTION ABNORMAL
Detective Actuators: Detective Actuators:
Control PCB detection circuit
Detective details: Detective details:
When the location error of compressor is detected,the compressor is
stopped.(Abnormal Stop) It restarts upon the balance pressure control
(3 min.ST), and if the location error is detected with in 40 seconds again,
it stop again. If it is repeated for 4 Times (5 th time abnormal stop), the
compressor becomes permanent stop. Then LED indicates Error and the
error information is output to the network
Forecast of Cause Forecast of Cause:
1. Connection of electrical parts 4. Check Control PCB
2. Compressor defective
3. TR PWB ASSY defective
Check Point 3 : Diagnosis of TW PWB ASSY Check Point 3 : Diagnosis of TW PWB ASSY
1.If error appears during the compressor running, check if each voltage between U – V,V – W, W – U are output in a good valance.
If the voltage value comparison between each terminal is abnormal when the rotation frequency is constant, replace
TW PWB ASSY.
2. Check TR ASSY(Judgment of Transistor module)
Check the continuity by removing each terminal cable.
Replace TR ASSY if it is abnormal.(Compare with the table on right)
Check Point 1 : Check Point 1 :
Check the electrical parts connection Check the electrical parts connection
Check the connection of CN15,16 between TR PWB ASSY and Control PCB
Check if incorrect wiring is done at the U,V,W terminal between TR PWB ASSY and Compressor
If abnormal connection is found, correct the connection.
P
U
V
W
N
TR PWB ASSY
(+),( - ) shows the terminal of the meter
Outdoor unit grille side
Check Point 2 : Check Point 2 :
Check Compressor Check Compressor
Check motor Coil
1.Check the continuity between each terminals of coil U, V, W (resistance value : 0.187 )
2.Check if there is a cut off between each terminals of U,V,W
If the resistance value is abnormal or open, the compressor is defective
Check Point 3 : Check Control PCB (Location Detector Circuit) Check Point 3 : Check Control PCB (Location Detector Circuit)
Remove CN14 connector on Control PCB, and check the voltage DC5.0V between 1-2.
Replace Control PCB if the voltage is 0V.
Indicate or Display: Indicate or Display:
Indoor Unit : Operation LED Flash Flash , , Timer LED 3 Times Blink 3 Times Blink
Swing LED 3 Times Blink 3 Times Blink
Outdoor Unit : LED1 Flash Flash , , LED4 9 4 Times Blink
ERROR CODE: E:32
14 15
N ( )
N ( )
W ( )
V ( )
14 15
U ( )
P ( )
V ( )
U ( )
W ( )
V ( )
U ( )
P ( )
W ( )
V ( )
U ( )
W ( )
Normal
resistance
value
COMP
TERMINAL
P / N
TERMINAL
06-28
Multimeter
Resistance value
U
1M Ohm or greater
U
W
V
P
W
V
N
The resistance value is changes in a type
of the tester (Digital or Analogue)
and internal resistance.
Confirm method for analog meter.
Simple confirm method for digital meter.