<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.
Refer to the Troubleshooting 21
)
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.
02-33
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 32
OUTDOOR UNIT Error Method:
Discharge Temp. Error
Indicate or Display:
Error code : A1
Outdoor unit : No indication
AMP Air Conditioning
www.ampair.co.uk | [email protected]
