AirStage AO54FJ, Service Manual

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Detective Actuators: Detective Actuators:
Discharge temperature thermistor
Detective details: Detective details:
When discharge temperature sensor detected over 115 deg C during the
pump – down operation.
Releasing condition : Pump –
–
Down Dip SW On OFF
Pump Down Complete
Trouble shooting 16
OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method:
PUMP DOWN ABNORMAL
(Discharge Temp. Abnormal )
Check Point 1 : Check Out of Gas or Gas Leak of Refrigerant Check Point 1 : Check Out of Gas or Gas Leak of Refrigerant
Conduct Leak Check at Piping connection.
Check if the refrigerant amount is proper by measuring Gas pressure.
(Condensation temp., Refrigerant Pressure Chart) Refer to Service manual 8-4-2
Check Leak portion.
SEALING TEST
Charge the piping with nitrogen to the sealing test pressure (4.15Mpa).
After 24 hours, check that pressure has not fallen.
Note: When the ambient temperature changes by 5 deg, the test pressure changes about 0.07Mpa
When the refrigerant is recharged, make sure to perform the vacuuming and charge the originally specified amount.
Check Point 4 : Check Point 4 :
Check for Outdoor Unit fan, control PCB Check for Outdoor Unit fan, control PCB
Check the fan hand and check if it turns normal.
Check around Outdoor fan motor (Parts Information 6) (Parts Information 6)
Check if the air flow route of Outdoor unit fan is blocked.
If Outdoor fan motor is defective, replace it.
Check Point 2 : Check Point 2 :
Error detection by defective mounting thermistor or cut off Error detection by defective mounting thermistor or cut off
Thermistor came off the holder
Check if the cable is caught in etc,
Check the thermistor characteristics Trouble shooting 17 Trouble shooting 17
If the thermistor is abnormal, replace the thermistor
Check Point 6 : Check EV - KIT Check Point 6 : Check EV - KIT
Check around EV - KIT (PARTS INFORMATION 11) (PARTS INFORMATION 11)
Replace EV - KIT if it is defective.
Check Point 3 : Check Point 3 :
SV2 (Bypass valve) operation defective SV2 (Bypass valve) operation defective
Check the connection of SV2 (CN5)of control PCB.
Check around SV2 (Bypass Valve) (Parts Information 7) (Parts Information 7)
If either SV2 or Coil was abnormal, replace it.
Check Point 7 : Check valve opening Check Point 7 : Check valve opening
If the 3 way valve (Gas pipe side) was closed, open it and
check the condition.
Forecast of Cause Forecast of Cause:
1. Leak of refrigerant 5. EEV operation defective
2. Error detection by defective mounting of 6. EV - KIT operation defective
thermistor or cut off. 7. 3 way valve(Gas Side Pipe) was closed
3. SV2 operation defective
4. Check for Outdoor Unit fan
Check Point 5 : Check Outdoor unit EEV1 Check Point 5 : Check Outdoor unit EEV1
Check around Outdoor unit EEV1 (PARTS INFORMATION 10) (PARTS INFORMATION 10)
If Outdoor unit EEV1 is defective , replace it
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 , , LED2 10 10 Time Time s s Blink Blink
ERROR CODE: E:32
06-20