<Cooling operation>
OK
OK
OK
OK
:
OK
<Heating operation>
2. EEV defective, strainer clogged
3. Outdoor unit operation
failure, foreign matter on heat exchanger
4. Discharge temperature thermistor
failure
5. Insufficient refrigerant
Discharge temperature thermistor
"Protection stop by "discharge temperature 115
°C during compressor
operation'''' generated 2 times within 24 hours.
Check Point 1 : Check if 3-way valve(gas side) is open.
Discharger thermistor characteristics check
(Check by disconnecting thermistor from PCB.)
* For the characteristics of the thermistor, refer to the "Service Parts Information 8"
Check Point 4 : Check the discharge thermistor
EEV open?
Strainer clogging check (before and after EEV, ACM
oil return)
Refer to "Service Parts Information 3 "
Check Point 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(PARTS INFORMATION 5)
Check Point 2 : Check the EEV, strainer
Check Point 5 : Check the refrigerant amount
Leak check
EEV open?
Strainer clogging check (before and after EEV, ACM
oil return)
Refer to "Service Parts Information 3 "
Check Point 2 : Check the EEV, strainer
If the 3-way valve(gas side) was closed, open the
3-way valve(gas side) and check operation.
02-34
Check Point 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
Detective Actuators:
Detective details:
Forecast of Cause :
Trouble shooting 33
OUTDOOR UNIT Error Method:
Discharge Temp. Error
Indicate or Display:
Error code : A1
Outdoor unit :
POWER
MODE
ERROR
2
10
(L1) (L2) (L6)(L5)(L4)(L3)
1
PUMP
DOWN
LOW
NOISE
PEAK
CUT
Main PCB
and “Trouble shooting 21”.
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