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●E Alarm
Alarm
Diagnosis
code
001
E101
HPS activates during operation
101
E105
Compressor operating current is too high (over DC 51A)
002
E107
DCHS1 or DCHS2 becomes 130 ℃ or more for 10 minutes or 145
℃ or more.
002
E109
LPT drops below -70kPa during operation
010
E115
Condenser fan motor internal thermostat activated
011
E201
Pumpdown control is not completed within rated time
012
E202
Automatic pumpdown failure
013
E203
Overcooling prevention
014
E207
Defrost is not completed in 90 min.
003
E303
Humidity setting request (during dehumidification operation)
015
E304
Incorrect configuration set (Reheat coil)
003
E305
Defrost interval setting request
003
E307
Calendar setting request
003
E311
Trip start setting request
016
E401
Supply air temperature sensor (SS) failure
016
E402
Data recorder supply air temperature sensor (DSS) failure
016
E403
Return air temperature sensor (RS) failure
016
E404
Data recorder return air temperature sensor (DRS) failure
017
E405
Discharge gas temperature sensor (DCHS1) failure
018
E406
Suction gas temperature sensor (SGS) failure
018
E407
Evaporator inlet temperature sensor (EIS) failure
018
E409
Evaporator outlet temperature sensor (EOS) failure
018
E411
Ambient temperature sensor (AMBS) failure
019
E413
Low pressure transducer (LPT) failure
019
E415
High pressure transducer (HPT) failure
020
E417
Power voltage sensor (PT) failure
021
E419
Current sensor (CT) failure
022
E425
USDA #1 sensor failure
022
E427
USDA #2 sensor failure
022
E429
USDA #3 sensor failure
023
E431
Humidity sensor (HuS) failure
022
E433
Cargo temperature sensor (CTS) failure
018
E435
Economizer inlet temperature sensor (ECO IN) failure
018
E437
Economizer outlet temperature sensor (ECO OUT) failure
017
E439
Discharge gas temperature sensor (DCHS2) failure
024
E607
Sheet key failure
005
E701
Abnormal power voltage is detected during operation.
One of R, S or T phase is open during operation
025
E707
Temporary power supply shut down during operation
026
E801
CPU onboard battery failure
027
E805
FA sensor failure
028
E807
Ventilator open warning: Ventilator is open during frozen operation
009
E809
Refrigerant shortage
029
E903
A communication error between CPU board (EC1) and operation
board (EC3)
Alarm content
2-20
Controller action
Restart after 3 min.
Restart after 3 min.
Restart after 3 min.
Restart after 3 min.
Restart after 3 min.
Alarm display only
Alarm display only
Restart after 3 min.
Alarm display only
Alarm display only
Alarm display only
Alarm display only
Alarm display only
Alarm display only
Backup operation
Backup operation
Backup operation
Backup operation
Backup operation
Backup operation
Backup operation
Backup operation
Alarm display only
Backup operation
Backup operation
Alarm display only
Alarm display only
Alarm display only
Alarm display only
Alarm display only
Alarm display only
Alarm display only
Backup operation
Backup operation
Backup operation
Alarm display only
Restart after 3 min.
Restart after 3 min.
Alarm display only
Alarm display only
Alarm display only
Restart after 3 min.
Alarm display only
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