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TheAChub
Electronic Expansion Valve Coil Abnormality / Dust Clogging
Error Code A9
Applicable Models
FXFQ Method of Error Detection
Check coil condition of electronic expansion valve by using micro-computer. Check dust clogging condition of electronic expansion valve main body by using micro-computer.
Error Decision Conditions
Pin input for electronic expansion valve coil is abnormal when initializing micro-computer. Either of the following conditions is seen/caused/ occurs while the unit stops operation. z R1T – R2T > 8°C (46.4°F) z R2T shows fixed degrees or below.
R1T: temperature of suction air
R2T: temperature of liquid pipe of heat exchanger
Supposed Causes
Defective of electronic expansion valve coil Defective PCB indoor unit
Defective relay cables 
Electronic Expansion Valve Coil Abnormality
Error Code A9
Applicable Models
Indoor units except FXFQ models Method of Error Detection
Check coil condition of electronic expansion valve by using micro-computer. Error Decision Conditions
Pin input for electronic expansion valve coil is abnormal when initializing micro-computer. Supposed Causes
Defective of electronic expansion valve coil Defective PCB indoor unit
Defective relay cables 
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