Outdoor Unit Fan Motor Lock Error
OK
OK
OK
1. Rotation obstruction by foreign matter
2. Main PCB to Driver PCB to Fan motor wiring, disconnection, open
3. Fan motor defective (winding open, lock)
4. Driver PCB defective
5. Main PCB defective
Outdoor unit fan motor
1. When outdoor fan rotation speed is less than 100rpm in 20 seconds
after fan motor starts, fan motor and compressor stops.
2. After fan motor restarts, if the same operation is repeated
consecutively 4 times, fan motor and compressor stops permanently.
Check if fan can be rotated by hand.
Motor winding resistance check
Motor operation check Refer to the service parts information 22
Check Point 5 : Replace Main PCB
Check Point 2 : Main PCB to Driver PCB to Fan motor wiring connection state
Connector and wiring connection state check.
Check blown fuse of DC FAN motor (5A FUSE)
OK
Check Point 4 : Replace Driver PCB
Check the appearance of Driver PCB.
Change Driver PCB and release the error.
Check if the error reoccurs on a test run.
Change Main PCB and release the error.
Check if the error reoccurs on a test run.
Check Point 3 : Fan motor defective
Check Point 1 : Fan rotation state check
Check for the absence of foreign matter around the fan.
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. 9 7. 1
Error Code : 9 U / 9 7
Trouble shooting 54 E97. 1
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
After fixing the problem and for canceling the Error, Error Reset (F3-40) will be required after power reset
>> If it is abnormal, replace Main PCB.
(When Main PCB is replaced, set up the original setting by Rotary, Dip, and Push SW)
Caution
By changing of DIP SW 4-2 to ON, the Back-up operation can start when the active outdoor unit exists on the multi outdoor unit connection.
(Stand alone outdoor unit is impossible)
The following conditions will be concerned in use of back-up operation. (Please do not use the system with back-up operation for long time.)
- The operating compressor life time becomes shorter.
- The operating performance may drop due to the limited active compressor(s).
- The compressor may stop frequently by protection controlling.
*In order to keep the operating capacity, the release of the Low noise mode setting might be necessary.
04-63
Cable open check. Refer to the service parts information 5