Cleaver-Brooks Profire E Series - Page 69

750-297
Profire E/LNE Series Manual
6-5
Troubleshooting
Modulating Motor Does
Not Operate
1. Manual/automatic switch in wrong position.
2. Linkage loose or jammed.
3. Motor does not drive to open or close during pre-purge or close on burner shutdown.
a. Motor defective.
b. Loose electrical connection.
c. Damper motor transformer defective.
4. Motor does not operate on demand.
a. Manual/automatic switch in wrong position.
b. Modulating control improperly set or inoperative.
c. Motor defective.
d. Loose electrical connection.
e. Damper motor transformer defective.
Problem Possible Causes