Fujitsu AOU30RLXEH, Service Instruction

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<Cooling operation>
OK
OK
OK
OK
OK
<Heating operation>
3. Outdoor unit operation failure, foreign matter on heat exchanger
4. Discharge temperature thermistor failure 5. Insufficient refrigerant
Test 1 : Check if 3-way valve(gas side) is open.
Discharger thermistor characteristics check
(Check by disconnecting thermistor from PCB.)
Test 4 : Check the discharge thermistor
EEV open?
Strainer clogging check (before and after EEV, ACM
oil return)
Test 3 : Check the outdoor unit fan,heat exchanger
Check for foreign object at heat exchanger
Check if fan can be rotated by hand.
Motor check
(SERVICE PARTS INFORMATION 5)
Test 2 : Check the EEV, strainer
Test 5 : Check the refrigerant amount
Leak check
EEV open?
Strainer clogging check (before and after EEV, ACM
oil return)
Test 2 : Check the EEV, strainer
If the 3-way valve(gas side) was closed, open the
3-way valve(gas side) and check operation.
Test 1 : Check if 3-way valve(liquid side) is open.
If the 3-way valve(liquid side) was closed, open the
3-way valve(liquid side) and check operation.
OK
1. 3-way valve not opened 2. EEV defective, strainer clogged
Trouble shooting 31
OUTDOOR UNIT Error Method:
Discharge Temp. Error
Discharge temperature thermistor
“Protection stop by ”discharge temperature > 239 °F (115 °C) during
compressor operation”” generated 2 times within 24 hours.
Detective Actuators: Detective details:
Indicate of Display:
Forecast of Cause:
Outdoor unit :
POWER
MODE
ERROR
2
0 1
(L1) (L2) (L6) (L5) (L4) (L3)
1
PUMP
DOWN
LOW
NOISE
PEAK
CUT
*
For the characteristics of the thermistor, refer to the Trouble shooting 18 .
(SERVICE PARTS INFORMATION 3) (SERVICE PARTS INFORMATION 3)
02-34
Indoor Unit :
Operation lamp: 10 times Flash,
Timer lamp : 1 times Flash
ERROR CODE : [E : A1]
n: n times blinking : Light ON : Light OFF