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Trouble shooting 29
OUTDOOR UNIT Error Method:
Inverters Communication Error
Detective Actuators:
Outdoor unit Main PCB
1. Noise
Forecast of Cause :
3. Main PCB defective 4. Inverter PCB defective
Check Point 1-1 :
Turn the power on again
Error displayed again?
YES
Check Point 2 : Check the main PCB to Inverter PCB wiring
Connector connection state check
Cable open check
OK
Check Point 3 : Check Main PCB
Chack Main PCB. (Refer to "Servise Parts Information 3, 4")
OK
Check Point 4 : Replace Inverter PCB
Replace Inverter PCB.
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.
Indicate or Display:
E62. 6
Outdoor Unit : E. 6 2. 6
Indoor Unit
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Error Code
: 9 U / 6 2
Detective details:
Communication not received from Inverter PCB for 10 seconds or more
2. Main PCB to Inverter PCB wiring connection defective
Check Point 1-2 : Noise
NO
Check if ground is connection correctly or there are no related cables near the
power line.
04-38
Filter LED Continuous Flash.
- Quick Links:
- Service Manual
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Troubleshooting
