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3.4 Alarm display and back-up function
3.4.1 Alarm list
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.
3) The unit enters the standby mode for 4 hours if E101, E103, E105, E107 (DCHS abnormally high),
E109, E315, E707 are generated 9 times.
Alarm
grouping
Alarm code
Alarm content
Action with alarm
Permanent
stop
F101
After powered on, if HPS starts to operate before the compressor
starts. Or the compressor fails to start 5 times.
Unit stops
F109
If the low pressure becomes –90kPa or lower within 2 seconds after the compressor started.
Unit stops
F111
Error in communication between the CPU and the I/O board
Unit stops
F301
Temperature setting request (Error in the CPU board)
Unit stops
F401
Return/Supply air sensor malfunction (at chilled mode)
Unit stops
F403
Return/Supply air sensor malfunction (at partial frozen mode)
Unit stops
F603
If the initial settings of the controller are wrong, or if the suction
modulating valve (SMV) does not close even when instructed to close.
Unit stops
F701
Error in power supply voltage (530V or more, 300V or less)
Unit stops
F705
S phase became open phase
Unit stops
F803
If any of the following conditions are applicable
1) E107 is generated twice due to EV opening error.
2) Errors are identified in the 2 evaporator fans. (Refer to E205.)
3) The contacts of magnetic switch for the compressor is welded.
4) 2 of the HPT sensor, LPT sensor and DCHS sensor are abnormal.
Unit stops
Display
alone
or
restortable
a
larm
E101
High-pressure switch activated during normal operation.
Restart after 3-minute
E103
CTP or electronic OC activated during normal operation.
Restart after 3-minute
E105
Micro processor OC activated during normal operation.
Restart after 3-minute
E107
The DCHS is excessively hot during operation.
The EV opening error continues 5 minutes.
F803 is displayed when E107 due to EV opening error is generated twice.
Restart after 3-minute
E109
Low pressure drops to -90KPa or lower for 2 seconds or longer successively during normal operation.
Low pressure is higher than 400KPa for 5 minutes or longer successively.
Restart after 3-minute
E201
Pump down is not completed within 120 seconds.
Only alarm display
E203
Overcool protection activates in the chilled or partial frozen mode.
(Control temperature
≦
SP–3˚C or for 3 minutes)
Restart after 3-minute
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)
Only alarm display
E207
Defrosting is not completed within 90 minutes
(120 minutes if the inside temperature is -20˚C or lower)
Only alarm display
E303
Humidity setting required (CPU board malfunction)
Only alarm display
E305
Defrost timer setting required (CPU board malfunction)
Only alarm display
E307
Calendar setting required (CPU board malfunction)
Only alarm display
E311
Trip-start time setting required (CPU board malfunction)
Only alarm display
E315
PT/CT board malfunction
Restart after 3-minute
E401
Supply air temperature sensor (SS) malfunction
Back-up operation
E402
Data recorder supply air temperature sensor (DSS) malfunction
Back-up operation
E403
Return air temperature sensor (RS) malfunction
Back-up operation
E404
Data recorder return air temperature sensor (DRS) malfunction
Back-up operation
E405
Discharge air temperature sensor (DCHS) malfunction
Only alarm display
E406
Suction gas temperature sensor (SGS) malfunction
Back-up operation
E407
Evaporator inlet temperature sensor (EIS) malfunction
Back-up operation
E409
Evaporator outlet sensor (EOS) malfunction
Back-up operation
E411
Ambient sensor (AMBS) malfunction
Only alarm display
E413
Low pressure transducer (LPT) malfunction
Back-up operation
E415
High pressure transducer (HPT) malfunction
Back-up operation
E417
Voltage sensor (PT1) malfunction
Only alarm display
E421
Current sensor (CT1) malfunction
Only alarm display
E423
Current sensor (CT2) malfunction
Restart after 3-minute
E425
Pulp temperature sensor (USDA1) malfunction
Only alarm display
E427
Pulp temperature sensor (USDA2) malfunction
Only alarm display
E429
Pulp temperature sensor (USDA3) malfunction
Only alarm display
E431
Humidity sensor (HuS) malfunction
Only alarm display
E433
Cargo temperature sensor (CTS) or box temperature sensor (CBS)
malfunction
Only alarm display
E603
・
EV connection malfunction
・
SMV (MV) operation malfunction
Back-up operation
E607
MDS (sheet key) malfunction
Only alarm display
E807
The ventilator open during the frozen operation
Only alarm display
E707
Shutdown due to an instantaneous voltage error
Restart after 3-minute
E801
Exhausted battery for the CPU board
Only alarm display
E805
FA sensor malfunction
Only alarm display
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