AK-PC
551
User
Guide RS8GY302 © Danfoss 2015-06
21
Alarm list
Alarm text
Reason
Priority
setting
Default
value
General alarms
Standby mode (Main sw. OFF) Alarm when control is stopped by internal or external Main Switch (DI input "Main Switch")
Standby mode
Normal
PoA sensor error
Pressure transmitter signal from PoA defective
Sensor error
Normal
PoB sensor error
Pressure transmitter signal from PoB defective
S4A sensor error
Temperature signal from S4A media temp. sensor defective
S4B sensor error
Temperature signal from S4B media temp. sensor defective
SsA sensor error
Temperature signal from SsA suction gas temp. defective
SsB sensor error
Temperature signal from SsB suction gas temp. defective
SdA sensor error
Temperature signal from SdA discharge gas temp. Sd defective
SdB sensor error
Temperature signal from SdB discharge gas temp. Sd defective
Pc sensor error
Pressure transmitter signal from Pc defective
S7 sensor error
Temperature signal from S7 media sensor on condenser defective
Sc3 sensor error
Temperature signal from Sc3 air on condenser defective
Sd Comp. 1A sensor error
Temperature signal from "Sd comp. 1A" discharge gas temp. on digital scroll/Stream compressor is
defective
Sd Comp. 1B sensor error
Temperature signal from "Sd comp. 1B" discharge gas temp. on digital scroll/Stream compressor is
defective
Saux - sensor error
Temperature signal from Saux thermostat sensor is defective
Refrigerant not selected
Alarm if no refrigerant has been selected
Refrigerant not set
Normal
Output in manual mode
An output is set in manual mode
Output in MAN mode
Normal
IO configuration error
Not all inputs and output functions have been assigned to hardware Inputs or outputs*
(can not be set)
Normal
GA1 - "Alarm text"
Alarm on general alarm input DI 1 (DI input "Gen. Alarm 1 - alarm text depend upon configured text)
General alarm 1
Normal
GA2 - "Alarm text"
Alarm on general alarm input DI 2 (DI input "Gen. Alarm 2 - alarm text depend upon configured text)
General alarm 2
Normal
GA3 - "Alarm text"
Alarm on general alarm input DI 3 (DI input "Gen. Alarm 3 - alarm text depend upon configured text)
General alarm 3
Normal
Suction A alarms
PoA Low suction pressure
Minimum safety limit for suction pressure PoA has been violated
Low pressure PoA
Normal
LP A safety switch cut out
Low safety limit for external low pressure switch has been violated (DI input "LP switch A")
PoA High suction pressure
High alarm limit for PoA has been exceeded
High pressure PoA
Critical
SsA High superheat
Superheat in suction line A too high (measured by PoA and SsA)
Superheat A
Normal
SsA Low superheat
Superheat in suction line A too low (measured by PoA and SsA)
SdA High discharge temp.
Safety prevention limit for SdA discharge temperature has been exceeded (10K below safety limit)
High disch. temp.SdA
Critical
Comp. 1A High disch. temp
Safety limit for discharge gas temperature of digital scroll/Stream/CRII compressor has been exceeded
Compressor safety A
Normal
Compressor 1-8A safety cut
out
Compressor no. 1-8 A has been cut out on general safety input (DI input "Comp.1-8 A safety")
Suction B alarms
PoB Low suction pressure
Minimum safety limit for suction pressure PoB has been violated
Low pressure PoB
Normal
LP B safety switch cut out
Low safety limit for external low pressure switch has been violated (DI input "LP switch B")
PoB High suction pressure
High alarm limit for PoB has been exceeded
High pressure PoB
Critical
SsB High superheat
Superheat in suction line B too high (measured by PoB and SsB)
Superheat B
Normal
SsB Low superheat
Superheat in suction line B too low (measured by PoB and SsB)
SdB High discharge temp.
Safety prevention limit for SdB discharge temperature has been exceeded (10K below safety limit)
High disch. temp.SdB
Critical
Comp. 1B High disch. temp
Safety limit for discharge temperature of digital scroll/Stream compressor has been exceeded
Compressor safety B
Normal
Compressor 1-4B safety cut
out
Compressor no. 1-4 B has been cut out on general safety (DI input "Comp.1-4 B safety")
Condenser alarms
Pc High condensing pressure
High prevention safety limit for condensing pressure Pc has been violated (3K below safety limit)
High pressure Pc
Critical
HP safety switch cutout
High safety limit for external high pressure switch has been violated (DI input "HP switch")
Common fan safety cut out
A Fan is reported defective via common safety input (DI input "Fan safety")
Fan safety
Normal
Fan 1 safety cut out
Fan no. 1-8 is reported defective via individual safety input (DI input "Fan 1-8 safety")
* The alarm "IO configuration error" is activated if not all IO functions have been assigned to a hardware Input or output.
Often the reason is that too many functions have been selected via the configuration of the controller.
Go to the menu point "Main menu => IO status => IO summary".
In this screen you can see if you have configured too many functions of a certain type - indicated by an exclamation mark " ! "
Please refer to the screen example, were too many DO functions have been configured.
Solve the problem by adapting the DO functions to the max. No of DO outputs.
Sensor alarms
Sensor alarms shut off automatically when the sensor has been O.K. for 10 minutes.
If you have corrected the sensor error and want to perform a manual, forced removal of the alarm, go to the “Alarm detail display”
Press and hold the “X” key for 2 seconds here.