Alto-Shaam COMBITHERM CTC Series - Classic: Fan Motor Temperatures E53 and E54

MN-35949 • Rev 04 • 06/16 • Combitherm® CT PROformance™ Series • Technical Service Manual • 93
Troubleshooting
Classic: Fan Motor Temperatures E53 and E54
E53 = Single/Upper Fan Motor High Limit / E54 = Lower Fan Motor High Limit
Is the fan spinning?
Yes
Yes
Yes
Yes
Yes
Yes
Is the motor wiring to the
contactor secure?
Secure the
wiring and
retest.
Secure the wiring
and retest.
Replace the
fan wheel.
Unlock the fan wheel.
The root cause of overheating must
be determined - call Alto-Shaam
Service for assistance.
The root cause of overheating must
be determined - call Alto-Shaam
Service for assistance.
Replace the motor.
Replace the motor.
Is there continuity between
the motor high-limit wiring and the
Control Board (CB)?
Is the fan wheel locked?
Is there continuity between
the motor and the thermal
protection switch?
Is the fan wheel damaged?
No
No
No
No
No
No
No
Is there continuity between
the motor and the thermal
protection switch?
Yes