µRack
Cod. CAREL +03P220431 rel. 2.2 dated 10/02/12
25
Code Alarm description Generated by Action performed Type of reset Delay Notes
A14 High discharge pressure AIN All fans ON automatic no
A15 Low suction pressure 1 AIN All comps. OFF automatic settable
A16 High suction pressure 1 AIN all comps. ON automatic settable
A17 Low suction pressure 2 AIN All comps. OFF automatic settable
A18 High suction pressure 2 AIN all comps. ON automatic settable
A19 Suction probe 1 faulty or disconnected AIN Settable no. comps. ON
automatic
30 seconds
See compressor management with probe
broken.
A20 Suction probe 2 faulty or disconnected AIN Settable no. comps. ON
automatic
30 seconds
See compressor management with probe
broken.
A21 Discharge probe faulty or disconnected AIN Settable no. fans ON
automatic
30 seconds Force fan inverter to 100%.
A22 Fan 1 thermal overload DIN Fan 1 OFF Settable no
A23 Fan 2 thermal overload DIN Fan 2 OFF Settable no
A24 Fan 3 thermal overload DIN Fan 3 OFF Settable no
A25 Fan 4 thermal overload DIN Fan 4 OFF Settable no
A26 General fan thermal overload DIN
Only signal alarm. Preset
electronically the fan stop
during overload
Automatic no
A27 Prevent high discharge pressure AIN Compressors OFF Automatic no
A28 Compressors off for Prevent HP AIN Compressors OFF Automatic no
A29 Excessive prevent frequency AIN / Settable no Display only
HtE High outside temperature AIN
Automatic No
HtA High ambient temperature AIN
Automatic No
EHS High supply voltage
--- OFF Automatic No
ELS Low supply voltage
--- --- Automatic No
EPb EEPROM error
--- --- Settable No
EL1 Zero cross
Power supply
voltage
100% Fans Automatic No
AB2 B2 probe error faulty or disconnected AIN --- Automatic No
AB3 B3 probe error faulty or disconnected AIN --- Automatic No
Tab. 7.a
7.5 Alarms from analogue inputs: temperature probe and pressure transducer:
Fixed differentials: 0.2 bar suction
1.0 bar discharge
Example of LP alarm management
Fig. 7.a
Example of HP alarm management
Fig. 7.b
High press.
Alarm off
Set Point
Alarm on
Diff.
Low press.
Alarm off
Set Point
Alarm on
Diff.
To Next Page
Loading...
Need help?
General
