Led - Hussmann SHM Series Installation & Operation Manual

P/N 0515258_N

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.
RTN400
1
2
3
4
Operation
Permanently on
Blinking
OFF
Permanently on
Blinking
OFF
Permanently on
OFF
Permanently on
Blinking
OFF
Permanently on
Blinking
OFF
Permanently on
OFF
Permanently on
Blinking
OFF
Permanently on
OFF
5
6
7
8
Meaning
compressor on
Delay, protection or start-up blocked
otherwise
Defrost active
Activated manually or from Digital Input
otherwise
Fans active
otherwise
Energy Saving active
Reduced setpoint active
otherwise
alarm active
Alarm acknowledged
otherwise
°F setting (dro =1)
otherwise
Aux output active and/or light on
Deep cooling on
otherwise
°C setting (dro = 0)
otherwise
SHM Merchandisers
3-5
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