Inverter Compressor Start UP Error
OK
OK
1. Inverter PCB to inverter compressor wiring disconnection, open
2. Inverter PCB defective
3. Inverter compressor defective (lock, winding short)
Inverter PCB
"Protection stop by "overcurrent generation at inverter compressor starting"
restart" generated consecutively 60 times x 2 sets (total 120 times)
* The shortest time up to error generation is about 130 minutes
* Restart is not performed if an indoor unit in the same refrigerant system is
not turned ON by thermostat.
* After the end of the 1st set, the 2nd set is not started if all the compressors in
the same refrigerant system are not temporarily stopped.
Wiring connection state check
Cable open check
Check Point 3 : Replace the Inverter compressor
Inverter compressor replacement
Check Point 2 : Check the Inverter PCB
Inverter PCB check (Refer to Service Parts Information 4)
Check Point 1 : Check the Inverter PCB to inverter compressor connection state
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. 9 3. 1
Error Code : 9 U / 9 3
Trouble shooting 51 E93. 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
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.
04-60
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