Hitachi CHL-MBS-01 Installations- Und Betriebshandbuch Seite 19

Operation
3.1.2 Alarm code list
General alarms code list

Status Indication
7-segment
No.n Discharge Pressure Over-Increase
11
No.n Suction Pressure Interruption Device
11
No.n Suction Pressure Interruption Control
11
No.n Fan Internal Thermo Activation
141
No.n COMP Overcurrent
151
No.n Discharge Gas Increase
161
No.n COMP Internal Thermo Activation
171
No.n Cooler Inlet Decrease
191
No.n Suction Gas Decrease
1t1
1212
Thermistor Abnormality
112
1313
Freeze protection
113
1414
Hot Water Over-Increase
114
Setting of Number of Fans
1f0
No.n Fan Overcurrent
1fn
Startup Circuit Failure
0101
Reverse / Open Phase
0505
Thermistor Abnormality
1111
Thermistor Abnormality
2222
Thermistor Abnormality
22
Thermistor Abnormality
2d2d
Pump Interlock Abnormality
5p5p
Incorrect Operation / Incorrect Setting / Worng Wiring
4040
All Fans Abnormal Retry
F1P7
Fan Undervoltage Retry / Fan Overvoltage Retry /
F1P8
Fan Transmission Abnormality
N O T E
This table is an example of the main alarm list. See the chiller technical documentation for detailed information.
19 PMML0301A rev.0 - 09/2013
LCD Screen
Content
Activation of High Pressure Switch
Activation of Low Pressure Protection Control
Excessively Low Pressure
Activation of fan Internal Thermostat (Option)
Activation of Thermal Relay for Compressor or
Malfunction of Auxiliary Relay ARn
Activation of Discharge Gas Thermistor
Activation of Compressor Internal Thermostat
Excess Low Temperature of Cooler Inlet Refrigerant
Refrigerant undercharge detection
Activation of Suction Gas Thermistor
Failure of Water Outlet Thermistor
Activation of Freeze Protection Control
Excessively High Water Temperature
Incorrect Setting of Fan Number
Fan Overcurrent Relay
Failure of Auxiliary Relay for starting.
Phase Abnormally (reverse/open phase)
Failure of Water Inlet Temperature Thermistor
Failure of Ambient Temperature Thermistor (Open / Short)
Water Supply Header Temperature Thermistor
Water Return Header Temperature Thermistor
No Feedback Signal from Water Pump
Incorrect Operation / Incorrect Setting / Worng Wiring
All Fans Simoultaneously Stopped
Undervoltage / Overvoltage / Transmission Abnormality