Specifications
14 
TROUBLESHOOTING GUIDE 
SYMPTOM  POSSIBLE CAUSE  SUGGESTED REMEDY 
No power on display  Not plugged in or circuit breaker 
tripped 
Check or reset circuit breaker 
Connect to proper receptacle 
Power cord damaged  Check - replace if required 
Power switch damaged or defective  Check - replace if required 
Alarm sound, dis-
play reads ‘CALL, 
CUST, SErV’ 
Temperature inside heater module is 
above 160°F 
Unit is on, motors 
are running but no 
heat 
Internal wiring error 
Call service technician 
Element hi-limit trip / defective  Call service technician 
Takes too long to 
get to temperature 
Improper voltage  Call service technician to verify 
incoming voltage matches cabinet 
specifications. 
Unit is hot 
but low or no airflow 
Internal wiring error  Call service technician 
Circulation motor has quit  Call service technician 
Improper voltage  Call service technician to verify 
incoming voltage matches cabinet 
specifications. 
Display shows ‘nOP’  Control in ‘Cook with Probe Mode’  Plug in meat probe 
Call service technician 
NOTE:
The technical content of this manual, 
including any wiring diagrams, schemat-
ics, parts breakdown illustrations and / 
or adjustment procedures, is intended 
for use ONLY by qualified technical 
personnel
. 
NOTE: 
For warranty service, call Carter-Hoffmann 
direct at 800-323-9793 for authorization, 
we will dispatch the nearest authorized 
service agency. 










