Greenheck IGK (472084) - Manual (Page 14)

14 Model IGK Make-Up Air
®
Troubleshooting
Insufficient Airflow
Damper not fully opened?
24 VAC between ST1 (AUX)
terminal 53 and X?
24 VAC between ST1 (AUX)
terminal 53 and X?
Adjust damper linkage or replace faulty actuator.
(Damper actuator may take a few minutes to open)
Damper transformer (TR2) fault
(Replace transformer TR2)
Supply starter auxiliary contact
(ST1 (AUX)) defective
(Replace auxiliary contactor)
Filters dirty or clogged
Clean or replace filters.
(Reference Filter Maintenance in the Maintenance section).
Blower speed too low?
Adjust drives as needed.
(Reference Blower Start-Up step #5)
System static losses too high?
Reduce losses by improving ductwork.
Yes
Yes
Yes No
Yes
No
No
No
No
No
Leaks in ductwork
Repair leaks.
Yes
Belt slipping
Replace or tighten belt.
(Reference V-Belt Maintenance in the Maintenance section)
Yes
Everything is working properly,
consult factory.
Yes
Yes
Yes
No