Hussmann VRM - Page 22

22 ElEctrIcal / rEfrIgEratIon
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RTN400 Page 16/130
LED
RTN400 family controllers will also function even if a keyboard has not been connected.
With KDEPlus or KDWPlus keyboards (which are the same and guarantee the same functions), the display will be as follows:
1
2
5
6
8
7
4
3
Meaning of LEDs:
No Icon LED Operation Meaning
1
Compressor
Permanently on compressor on
Blinking Delay, protection or start-up blocked
OFF otherwise
2
Defrost
Permanently on Defrost active
Blinking Activated manually or from Digital Input
OFF otherwise
3
Fans
Permanently on Fans active
OFF otherwise
4
Reduced SET / Economy
Permanently on Energy Saving active
Blinking Reduced setpoint active
OFF otherwise
5
Alarm
Permanently on alarm active
Blinking Alarm acknowledged
OFF otherwise
6
°F readout
Permanently on °F setting (dro =1)
OFF otherwise
7
AUX
Permanently on Aux output active and/or light on
Blinking Deep cooling on
OFF otherwise
8
°C readout
Permanently on °C setting (dro = 0)
OFF otherwise
N.B.: When the instrument is powered on it performs a lamp test, during which time the display and LEDs will
flash for several seconds to check that they all function correctly.