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Discharge part
High Sd temp.
High
High Pd press..
High
Pd/S7 sensor error
High
Various alarms
Standby mode
Medium
Thermostat x – Low
Low
temp. alarm
Thermostat x – High
Low
temp. alarm
Pressostat x – Low pres-
Low
sure alarm
Pressostat x – alarm limit
Low
high pressure
Voltage input x – Low
Low
alarm
Voltage input x – High
Low
alarm
DIx alarm input
Low
System alarms
The alarm priority can not be altered on system alarms
Control mode
Low
Control mode
Low
Low
Refrigerant changed
Low
Medium
Medium
Medium
Medium
Medium
High
Medium
Medium
Manual control
Low
Low
AK-HP 780
High disch. temp. SdA
High pressure Pd
PdA sensor error
S7A sensor error
Control stopped,
MainSwitch=OFF
Thermostat x - Low alarm
Thermostat x - High alarm
Pressostat x - Low alarm
Pressostat x - High alarm
Analog input x - Low alarm
Analog input x - High alarm
Custom alarm x -define text
Manual comp. cap. Control A
Manual pump. cap. Control A
Refrigerant A not selected
Refrigerant changed
Time has not been set
System Critical exception
System alarm exception
Alarm destination disabled
Alarm route failure
Alarm router full
Device is restarting
Common IO Alarm
MAN DI..........
MAN DO.........
Heat pump controller
RS8GF202 © Danfoss 2015-08
Safety limit for discharge temperature has been exceeded
High safety limit for discharge pressure Pd has been exceeded
Pressure transmitter signal from Pd is defective
Temperature signal for S7 media temperature sensor is defective
The control has been stopped via the setting "Main switch" = Off or
the external Main switch is off
The temperature for thermostat no. x has been below the low alarm
limit for longer time than set delay
The temperature for thermostat no. x has been above the high alarm
limit for longer time than set delay
The pressure for pressostat no. x has been below the low alarm limit
for longer time than set delay
The pressure for pressostat no. x has been above the high alarm
limit for longer time than set delay
The voltage signal has been below the low alarm limit for longer
time than set delay
The voltage signal has been above the high alarm limit for longer
time than set delay
Alarm on general alarm input DI x
Compressors capacity control runs i manual mode
Pump capacity regulation runs i manual mode
Refrigerant has not been selected
Refrigerant type has been changed
Time has not been set
A unrecoverable critical system failure has occurred – exchange the
controller
A minor system failure has occurred – power off controller
When this alarm is activated the alarm transmission to the alarm
receiver has been deactivated. Check and wait.
When the alarm is cleared the alarm transmission to the alarm
receiver has been activated again
Alarms can not be transmitted to alarm receiver – check communi-
cation
The internal alarm buffer has an overrun – this might occur if the
controller can not send the alarms to the alarm receiver. Check com-
munication between controller and system unit.
The controller is restarting after flash updating of the software
There is a communication fault between the controller module and
the extension modules – the fault must be corrected as soon as
possible
The in put in question has been put in manual control mode via the
AK-ST 500 service tool software
The output in question has been put in manual control mode via the
AK-ST 500 service tool software
103
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