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Problem
Unit not
reaching
set temper-
ature.
5 5 . . 3 3 E E r r r r o o r r C C o o d d e e
The display shows the following error codes and warning when a fault is detected,
along with an alarm sound. Both the heat and humidity systems shut down, except
when specified otherwise.
NOTICE
Display
"E-4" "CPU
TOO HOT"
"E-5" "AIR
TEMP
TOO HOT"
"E-6A" "AIR
TEMP
SENSOR
FAILED
OPEN"
"E-6B" "AIR
TEMP
SENSOR
FAILED
SHORT-
ED"
"E-12A"
"WATER
26
Cause
Doors left open.
Keep doors closed except to load and serve product.
Door gasket torn
Replace bad door gaskets.
or worn.
T T a a b b l l e e 5 5 - - 2 2 E E r r r r o o r r C C o o d d e e s s
Cause
Control board too
Turn unit off, then back on; if display stills shows "E-4",
hot; unit over-
the PC board is getting too hot; clean louvers and check
heating or lou-
cooling fan; If cooling fan is not working, have it replaced;
vers clogged.
once panel cools down, the controls should return to nor-
mal; if error code persists, have the PC board replaced.
Faulty relay, PC
Turn unit off, then back on; if display still shows "E-5", the
board, or air
heating circuits and temperature probe should be
probe.
checked; once the unit cools down, the controls should re-
turn to normal; if error code persists, have the PC board
replaced.
Faulty air temper-
Turn unit off, then back on; if the display shows "E-6(A or
ature probe.
B)", the temperature probe should be checked; once the
temperature probe is repaired, or replaced, the controls
should return to normal; if error code persists, have the
PC board replaced.
Faulty water
Turn unit off, then back on; if display shows "E-12(A or
heater probe.
B)", the water heater should be checked and repaired, or
Correction
A humidity error only shuts down the humid-
ity system. If a humidity error occurs, and
you want to use the cabinet without humidity,
turn the humidity off by following the direc-
tions for SP-4, Humidity Setpoint, in Special
Programming Section of this manual. Once
the setpoint is off, the alarm stops, but the er-
ror code shows in display. (Includes "E-12A",
"E-12B", "E-17" and "E-18").
Panel Board Correction
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