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3.4 Alarm display and back-up function
3.4.1 Alarm list
Alarm
Alarm
grouping code
F101
HPS activated within 2 seconds after operation start or protection device
activated 5 times at start-up operation or Fuse 1 brown (Refer to Page 7-7).
F109
Low- pressure drops to–85kPa or lower within 2 seconds after operation start.
F111
HPS does not activate when it reaches to the set value.
F301
Temperature setting required (SRAM failure)
F401
Return/Supply air sensor malfunction (at chilled mode)
F403
Return/Supply air sensor malfunction (at partial frozen mode)
F603
Suction modulating valve (SMV) does not fully close contrary to the designation
or initial setting of the controller is wrong.
F701
Abnormal high voltage (over 530V)
F705
S phase became open phase
F803
If E101, E103, E105, or E109 is counted for ten times or E107,
E201 or E205 is counted for twice, the unit stops and enters
the standby mode for four hours.
E101
High-pressure switch activated during normal operation.
E103
CTP or electronic OC activated during normal operation.
E105
Micro processor OC activated during normal operation.
E107
The DCHS is excessively hot during operation.
The LPT exceeds 400 KPa within five minutes after startup,
(when the amount of circulated refrigerant is small)
E109
Low pressure drops to–90kPa or lower for 2 seconds
or longer successively during normal operaton.
E201
Pump down is not completed within 120 seconds.
E203
Overcool protection activates in the chilled or partial frozen mode.
(Control temperature ≦ SP–3˚C or for 3 minutes)
E205
Abnormal lock current at the evaporator fan motor is detected
(E205 is displayed if a fan motor is faulty, and F803 is displayed if two fan motors are faulty)
E207
Defrosting is not completed within 90 minutes
(120 minutes if the inside temperature is -20˚C or lower)
E303
Humidity setting required (SRAM failure)
E305
Defrost timer setting required (SRAM failure)
E307
Calendar setting required (SRAM failure)
E311
Trip-start setting required (SRAM failure)
E315
PT/CT board failure
E401
Supply air temperature sensor (SS) malfunction
E402
Data recorder supply air temperature sensor (DSS) malfunction
E403
Return air temperature sensor (RS) malfunction
E404
Data recorder return air temperature sensor (DRS) malfunction
E405
Discharge air temperature sensor (DCHS) malfunction
E406
Suction gas temperature sensor (SGS) malfunction
E407
Evaporator inlet temperature sensor (EIS) malfunction
E409
Evaporator outlet sensor (EOS) malfunction
E411
Ambient sensor (AMBS) malfunction
E413
Low pressure transducer (LPT) malfunction
E415
High pressure transducer (HPT) malfunction
E417
Voltage sensor (PT1) malfunction
E421
Current sensor (CT1) malfunction
E423
Current sensor (CT2) malfunction
E425
Pulp temperature sensor (USDA1) malfunction
E427
Pulp temperature sensor (USDA2) malfunction
E429
Pulp temperature sensor (USDA3) malfunction
E431
Humidity sensor (HuS) malfunction
E433
Cargo temperature sensor (CTS) or box temperature sensor
(CBS) malfunction
E603
Board of suction modulating valve (SMV) malfunction
E607
MDS (sheet key) malfunction
E707
Momentary power failure
Note 1) The alarm LED does not blink when E code alarm is generated.
To check if any alarm generates, use alarm indication function in the section "1. Current indication
mode" of "3.3.2 Mode operation procedure.
2) In case of sensor malfunction, the judgment for sensor malfunction does not perform for 3 minutes
before the pressure or temperature reaches to the specified value.
Alarm content
3-33
Action with alarm
Unit stops
Unit stops
Unit stops
Unit stops
Unit stops
Unit stops
Unit stops
Unit stops
Unit stops
Unit stops
Restart after 3-minute
Restart after 3-minute
Restart after 3-minute
Restart after 3-minute
Restart after 3-minute
Only alarm display
Restart after 3-minutes
Only alarm display
Only alarm display
Only alarm display
Only alarm display
Only alarm display
Restart after 3-minutes
Back-up operation
Back-up operation
Back-up operation
Back-up operation
Only alarm display
Back-up operation
Back-up operation
Back-up operation
Only alarm display
Back-up operation
Back-up operation
Only alarm display
Only alarm display
Restart after 3-minutes
Only alarm display
Only alarm display
Only alarm display
Only alarm display
Only alarm display
Back-up operation
Only alarm display
Restart after 3-minutes
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Troubleshooting
