Summit Ice Melt Systems
PO Box 6928, Tahoe City, CA 96145
Ph: 530-583-8888 Fax: 530-583-7777
www.SummitIceMelt.com
4 CDC Controller (Cont’d.)
Changing Set-Point Values
To change the Heater-On and Low-temperature Cutout set-point values, follow
the steps below with the controller powered and the rocker switch set to AUTO
(see Figure H: 4CDC Control Module on next page):
1)
Press the SET button once to display the current Heater-On set-
point value (displays temperature in tenths of degrees). A red
indicator light under “out1" will appear.
2)
Press the UP or DOWN arrow button to adjust the value. Hold
button to scroll.
3)
Press the SET button again to display the current Low-Temp Cutout
set-point value. A red indicator light under “out2" will appear.
4)
Press the UP or DOWN arrow button to adjust the value. Hold
button to scroll.
5)
Press the SET button again to return to the normal operating mode
(will display the current sensed temperature with no decimal point.)
NOTE: Low-Temp Cutout can effectively be avoided by setting its value
below the lowest expected ambient temperature (for example: -50.0.)
Alarm Buzzer and Error Messages
If the alarm buzzer sounds, it can be silenced by simultaneously pressing the
SET and Down buttons. The alarm message will continue until condition is
corrected.
Common Error Messages
1) “ErP” = Error of the probe not shown on display
2) “ooo” = Open sensor (one or both sensor leads are not connected).
3) “- - -” = Shorted Sensor (direct short between sensor leads).
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