Compressor 1 Temperature Abnormal
<Cooling/ Cooling main operation>
OK
OK
OK
OK
OK
<Heating/ Heating main operation>
Compressor temp. sensor 1
"Protection stop by "compressor 1 temp. 115°C (239°F)during compressor 1
operation"" generated 2 times within 40 minutes.
Check Point 1 : Check if 3-way valve is open.
Compressor 1 temp. sensor characteristics check
(Check by disconnecting sensor from PCB.)
* For the characteristics of the sensor, refer to the "Service Parts Information 25".
Check Point 4 : Check the compressor 1 temp. sensor
EEV (EEV1, EEV2, EEV3, indoor unit EEV) open?
Strainer clogging check (before and after EEV, ACM
oil return)
Refer to "Service Parts Information 15, 16, 17".
Check Point 3 : Check the outdoor unit fan,heat exchanger
Check for foreign matter at heat exchanger
Check if fan can be rotated by hand.
Motor check
Check Point 2 : Check the EEV, strainer
Check Point 5 : Check the refrigerant amount
Leak check
EEV (EEV1, EEV2, EEV3) open?
Strainer clogging check (before and after EEV, ACM
oil return)
Refer to "Service Parts Information 15, 16, 17".
Check Point 2 : Check the EEV, strainer
If the 3-way valve was closed, open the
3-way valve and check operation.
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. A 3. 1
Error Code : 9 U / A 3
Check Point 1 : Check if 3-way valve is open.
If the 3-way valve was closed, open the
3-way valve and check operation.
OK
1. 3-way valve not opened
2. EEV defective, strainer clogged
3. Outdoor unit operation defective, foreign matter on heat exchanger
4. Compressor 1 temp. sensor defective
5. Insufficient refrigerant
Trouble shooting 62 EA3. 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)
T
he following conditions will be concerned in use of back-up operation. (Please do not use the system with back-up operation for long time.)
- T
he operating compressor life time becomes shorter.
- T
he operating performance may drop due to the limited active compressor(s).
- T
he 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.
04-71
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