Carter-Hoffmann CH900 - Manual (Page 14)

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.
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.