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Entering Manual Defrost Mode
In order to initiate a manual, defrost press and hold the
button approx. three seconds. The control will read
“dEF” while the button is being held. The defrost is initiated when the defrost mode indicator
illuminates on the
display. The control display will then return to reading the case temperature. When the defrost mode indicator
turns off the defrost is complete and the compressor will turn back on illuminating the compressor run indicator
.
Error codes
It is possible for error codes to be displayed on the control screen. In the event of a malfunction an alarm will sound
and the alarm indicator
will be displayed on the display. An error code or codes will flash intermittently on the
display. If there are multiple codes, the display will continuously cycle through them. The following photo shows
error code “E0” as an example.
Mute: You may mute the alarm by pressing and releasing the wrench button. The red ringing bell and all error codes
will still be displayed. When the fault is remedied the control will return to normal operation and will automatically
clear the codes from the display.
Carel Control
EO = Air sensing probe - Open or shorted
E1 = Evap. coil probe - Open or shorted
Error codes may be encountered if either the controller or the display case is malfunctioning. The following is a list
of error codes that may be encountered
.
Table 1 - Error Codes and Resolutions
Code
Description
Cause
Resolution
E0
Temperature probe
error
Probe signal is
interrupted or short-
circuited
Check to ensure probe wires and quick
disconnect are secure in control.
Check probe resistance to table below. If 0
resistance is present check wiring insulation. If
infinite resistance is present check for breaks in
wiring (meter will likely read overload or very
high in the mega-ohm range).
Ensure that probes are wired per the wiring
diagram provided.
Replace probe if other remedies fail, or if probe
resistance deviates from “
\Table
3
” below
E1
Defrost probe error
See E0
EE
Unit parameter
reading error
Operating conditions
Remedy abnormal operating conditions. The
control is rated to operate in a range of 14 to
122°F (-10 to 50°C) and less than 90%RH non-
condensing.
Replace control if problem persists.
EF
Operating
parameter reading
error
See EE
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