Troubleshooting 21 - Outdoor Unit Error Method: Pump Down Error - Fujitsu Airstage V series Service Manual

Trouble shooting 21
OUTDOOR UNIT Error Method:
Pump Down Error
Detective Actuators:
Outdoor Unit Controller PCB circuit
Discharge Thermistor
Discharge Pressure Sensor
Forecast of Cause : 1. Valve is close 2. Pressure Sensor failure 3. Outdoor Fan failure
4. Outdoor Heat Exchanger clogged 5. Solenoid Valve failure
Check Point 1-1 : Reset Power
Is Discharge pressure sensor error or Suction pressure sensor error indicated?
NO
Check Point 1 : Check if Gas Pipe Valve is open
If it is not open, open it and check the operation.
OK
Check Point 2 : Check Outdoor FAN, Heat Exchanger
Is there anything obstructing the air distribution circuit?
Is there any clogging of Outdoor Heat Exchanger?
Is the Fan rotating? (Check by hand and If it is locked, replac e the motor)
Check Outdoor Fan Motor (PARTS INFORMATION 12)
>>If the Fan Motor is defective, replace it.
OK
Check Point 5 : Check EEV and Solenoid Valve
Check Solenoid Valve (SV4 of Main Unit)(PARTS INFORMATION 9)
>>If EEV or Solenoid Valve is defective, replace it.
Indicate or Display:
Outdoor Unit : LED1 Flash, LED2
Indoor Unit : Operation LED Lighted Continuously (Normal Operation)
(No error display)
ERROR CODE : E : 00
Detective details:
Pump-down has continued for over 10 minutes.
During pump-down, Discharge pressure (High Pressure) is measured higher
than 4.0MPa, and Pressure Sensor Error is occurred, then higher than
120°C of Discharge temperature is detected after 2 minutes of detecting
the discharge temperature of higher than 120°C.
Pump-down completion indication has lasted longer than 3 minutes.
06-32
9 Times Blink
YES
Check Point 1-2 : Check Pressure Sensor
Discharge pressure sensor error
(Refer to Trouble Shooting 34)
Suction pressure sensor error
(Refer to Trouble Shooting 35)
CAUTION
To prevent the discharge of the refrigerant into the
atmosphere, follow the procedure indicated below
to recover the refrigerant from an outdoor unit
before moving or discarding the unit.
Up to approximately 20 kg can be recovered per
outdoor unit.
If the volume od the refrigerant to be recovered is
large, recover it into a refrigerant recovery cylinder
while measuring the weight of the refrigerant.
If many refrigerant, it is a cause of a pump down error.