Trouble shooting 32
OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 3 : Check Outdoor Fan
OK
OK
Indicate or Display:
Refer to error code table.
OKOK
OKOK
Check Point 1 : Check connections of Outdoor Unit Electrical Components
Excessive high pressure protection
on cooling
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 connector is removed.
Check if the terminal connection is loose.
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 18)
>> 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
(PARTS INFORMATION 4)
Check EEV.
Excessive high pressure protection on cooling mode has been
activated.
02-37
Check Point 6 : Replace Main PCB
OKOK
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
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