58
DX3
Series
5.0
Troubleshooting Guide
Does the
burner ignite?
Does the burner
stay on?
Is the gas supply
to the heater in
the ON position?
Check to make sure gas pressure is within
minimum and maximum inputs, as indicated on
burner rating plate. Is gas pressure OK?
Does the burner stay on
for approx. 8 seconds
and then shut off?
Does the burner come
on and turn off
immediately (1 or 2
seconds)?
Check to make sure gas pressure
is within minimum and maximum
inputs, as indicated on the burner
rating plate. Is gas pressure OK?
Pressure
switch may
be faulty or
there is a
restriction in
the exhaust.
Does the heater
stay ON until a call
for heat ends?
Troubleshooting ends
The heater can shut down due to:
• Improper grounding.
• High winds.
• Taking combustion air from the attic.
• Dirty environment.
• Improperly positioned baffles.
• Fluctuating gas pressure.
No
Yes
No
Correct problem.
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Turn on.
Continued from page 56.
Yes
Correct problem.
No
