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AD – Flash gas evapora.
Low
A,B,C,D
General alarms
Thermostat x – Low temp.
Low
alarm
Thermostat x – High temp.
Low
alarm
Pressostat x – Low pressure
Low
alarm
Pressostat x – High pressure
Low
alarm
Voltage input x – Low alarm
Low
Low
Voltage input x – High alarm
DIx alarm input
Low
Stepper valve
High
System alarms
The alarm priority can not be altered on system alarms
Medium
Medium
Medium
Medium
Medium
High
Medium
Medium
Low
AK-CC 750A
AD – Flash gas detect A,B,C,D
Flash gas has been detected at the valve for a relatively long time
Thermostat x - Low alarm
The temperature for thermostat no. x has been below the low alarm limit for longer time than set delay
Thermostat x - High alarm
The temperature for thermostat no. x has been above the high alarm limit for longer time than set delay
Pressostat x - Low alarm
The pressure for pressostat no. x has been below the low alarm limit for longer time than set delay
Pressostat x - High alarm
The pressure for pressostat no. x has been above the high alarm limit for longer time than set delay
Analog input x - Low alarm
The voltage signal has been below the low alarm limit for longer time than set delay
Analog input x - High alarm
The voltage signal has been above the high alarm limit for longer time than set delay
DIx alarm
Alarm on general alarm input DI x
Stepper - Inj. A, B, C. D.
Check supply to the actual valve
Open coil, Shorted output,
Error, Power failure
Clock has not been set
Time has not been set
System Critical exception
A unrecoverable critical system failure has occurred – exchange the controller
System alarm exception
A minor system failure has occurred – power off controller
Alarm destination disabled
When this alarm is activated the alarm transmission to the alarm receiver has been deactivated.
When the alarm is cleared the alarm transmission to the alarm receiver has been activated.
Alarm route failure
Alarms can not be transmitted to alarm receiver – check communication
Alarm router full
The internal alarm buffer has an overrun – this might occur if the controller can not send the alarms to the alarm
receiver. Check communication between controller and AKA gateway.
Device is restarting
The controller is restarting after flash updating of the software
IO module error
There is a communication fault between the controller module and the extension modules – the fault must be cor-
rected as soon as possible
Manual override IO
The input/ output in question has been put in manual control mode via the AK-ST 500 service tool software
RS8HP102 © Danfoss 2018-09
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