Heatilator A36R Owner's Manual page 18

Overhead fan
operating?
Figure 5.1 Factory-built Fireplaces: Troubleshooting

Another appliance in
home also exhausting
air (furnace, fan,
Unsealed
dryer, etc.)?
can lights?
Air register from
furnace near
fireplace?
Doors opening
and closing?
Window closed
Combustion
for start-up?
air control
Heatilator • A36/42R, A36/42RH Owners Manual • 4017-260 • Rev R • 1/24
Overhanging
tree?
Bird's nest
or leaves in
termination
cap?
Structural
changes in
chimney area?
Creosote buildup
in flue?
Outside air
closed?