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 briey (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 o 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 eect when there is lack of signal from a dened 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.
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