Led - Hussmann MD-14 Installation & Operation Manual

P/N 2402646_H

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:
Meaning of LEDs:
No Icon LED
1 Compressor
2 Defrost
3 Fans
4 Reduced SET / Economy
5 Alarm
6 °F readout
7 AUX
8
°C readout
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.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
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2
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4
Operation Meaning
Permanently on compressor on
Blinking Delay, protection or start-up blocked
OFF otherwise
Permanently on Defrost active
Blinking Activated manually or from Digital Input
OFF otherwise
Permanently on Fans active
OFF otherwise
Permanently on Energy Saving active
Blinking Reduced setpoint active
OFF otherwise
Permanently on alarm active
Blinking Alarm acknowledged
OFF otherwise
Permanently on °F setting (dro =1)
OFF otherwise
Permanently on Aux output active and/or light on
Blinking Deep cooling on
OFF otherwise
Permanently on °C setting (dro = 0)
OFF otherwise
MD Open Vertical Merchandisers
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5
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7
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