30
User
Guide RS8GR602 © Danfoss 2016-10
AK-CT
450A
Operating status
(Measurement)
The controller goes through some regulating situations where it is just waiting for
the next point of the regulation. To make these “why is nothing happening” situations
visible, you can see an operating status on the display. Push briefly (1s) the upper but-
ton. The individual status codes have the following meanings:
Ctrl. state:
(Shown in all menu displays)
Waiting for end of the coordinated defrost
S1
1
When the compressor is operating it must run for at least x minutes.
S2
2
When the compressor is stopped, it must remain stopped for at least x minutes.
S3
3
The evaporator drips off and waits for the time to run out
S4
4
Refrigeration stopped by main switch. Either with r12 or a DI-input
S10
10
Refrigeration stopped by thermostat
S11
11
Defrost sequence. Defrost in progress
S14
14
Defrost sequence. Fan delay — water attaches to the evaporator
S15
15
Forced closing.
Refrigeration stopped due to stopped injection function
S16
16
Door is open. DI input is open
S17
17
Melt function in progress. Refrigeration is interrupted
S18
18
Modulating thermostat control
S19
19
Emergency cooling due to sensor error
S20
20
Normal control
S23
23
Manual control of outputs
S25
25
Case cleaning
S29
29
Forced cooling
S30
30
Delay on outputs during start-up
S32
32
Heat function is active
S33
33
Appliance shutdown
S45
45
Other displays:
The defrost temperature cannot be displayed. There is stop based on time
non
Defrost in progress / First cooling after defrost when temperature is still over
the thermostat band.
-d-
Password required. Set password
PS
Regulation is stopped via main switch
OFF
*) Emergency cooling will take effect when there is lack of signal from a defined S3 or S4 sensor. The regulation will continue with a registered average
cutin frequency. There are two registered values – one for day operation and one for night operation.
