Check Point 3 : Check Outdoor Fan
OK
Check Point 1 : Check connections of Outdoor Unit Electrical Components
1. Defective connection of electric components 2. Outdoor Fan Operation failure
3. Outdoor Heat Exchanger clogged 4. Thermistor failure 5. EEV failure 6. Main PCB failure
Check if the terminal connection is loose.
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>> Upon correcting the removed connector or mis-wiring, reset the power.
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 by hand when operation is off ?
>> If the Fan Motor is locked, replace it.
Check Outdoor Fan Motor. (Refer to Trouble shooting 19)
>> If the Fan Motor is failure, replace it.
Check Thermistor. (Refer to Trouble shooting 5)
>> If the Thermistor is failure, replace it.
Check Point 5 : Check Electronic Expansion Valve
Check Point 4 : Check Thermistor
Check EEV. (PARTS INFORMATION 3)
Excessive high pressure protection on cooling mode has been
activated.
02-25
Check Point 6 : Replace Main PCB
If Check Point 1 5 do not improve the symptom, change Main PCB.
Outdoor Unit Main PCB Circuit
Outdoor Fan Motor
Heat Exchanger Temp. Thermistor
Outdoor unit Electronic Expansion Valve
Trouble shooting 21
OUTDOOR UNIT Error Method:
Detective Actuators: Detective details:
Indicate or Display:
Refer to error code table.
Excessive high pressure protection
on cooling
OK
OK
OK
OK
Forecast of Cause:
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