TROUBLESHOOTING GUIDE - Continued
Symptom Possible
Cause
Remedy
Dixell temperature con-
troller display is lit up
and food chamber is
overheated
Heating element is hot.
CAUTION: Heating ele-
ment may reach tempera-
ture as hot as 650
°
F
1. Hi limit 350
°
F is always closed: measure temperature on it sur-
face; replace Hi Limit if it is hotter than 325
°
F. NOTE: When the
cover is open, the wire compartment, including the Hi Limit 350
°
F
is naturally cooled.
2. Dixell temperature controller is defective; replace controller
Cooling fan does not
operate
Cooling fan does not oper-
ate
1. Check Hi Limit 120
°
F—replace if necessary
2. Check cooling fan—replace if necessary. NOTE: The fan is con-
trolled by Hi Limit of 120
°
F and starts when the temperature in
the wire box is higher than 120
°
F. This can take up to 6 minutes.
Also, the fan might run after turning the switch OFF, until the tem-
perature falls under 120
°
F.
No heat
Heater blower not running,
heating element not ener-
gized.
WARNING: heater
blower may have failed
1. Remove cover, press Hi Limit reset button on “FAN SAFETY” limit
(Part Number:
18600-0117)
2. Check operation of heater blower; replace if necessary. NOTE:
this Hi Limit prevents an “over temp” situation INSIDE the control
unit. Ensures proper air flow throughout heater and cooling fan
operation.
Display Reads Indicates
P1
Air probe failure
HA
Maximum temperature alarm
LA
Low temperature alarm
EA External
alarm
Temperature Controller Alarms—
CONTACT SERVICE IF YOU SEE ANY OF
THESE ALARM CODES ON THE DISPLAY
For technical assistance with troubleshooting, call
Carter-Hoffmann at (800)421-3744 or (847)362-5500.
12
NOTE:
Prior to calling for service locate the serial tag on the cabinet. You will need the serial
number of the cabinet for proper identification.
Cabinet serial tag
