Troubleshooting
Insufficient Airflow
Damper(s) not fully opened?
No
System static losses too high?
No
Blower speed too low?
No
Filters dirty or clogged?
No
Leaks in ductwork?
No
Belt slipping?
Yes
Everything is working properly,
consult factory.
Too Much Airflow
Blower speed too high?
No
Filters not in place?
No
Insufficient external static
pressure?
No
Everything is working properly,
consult factory.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Adjust damper linkage(s), or replace faulty actuator(s).
(Damper actuators may take a few minutes to open)
Reduce losses by improving ductwork.
Adjust drives as needed.
Clean or replace filters.
(Reference Filters in the Maintenance section).
Repair leaks.
Replace or tighten belt.
(Reference V-Belt Drives in the Maintenance section)
Adjust drives as needed.
(Reference Blower
Install filters.
Increase external static pressure.
®
DGX Industrial Space Heating 19
