Notice – Detroit Radiant Products Company LD3 Series User Manual
Page 52
52
LD3
Series
Does the burner
light?
Is the gas supply valve
to the heater in the ‘ON’
position?
Were the gas lines purged
of air?
Continued from page 50
5.0
Maintenance
•
Troubleshooting Guide
Yes
No
Yes
Does the burner
stay on?
Yes
Does the heater
stay on until
the call for heat
ends?
Yes
Do the burners light and
then shut off immediately
(within 1-2 seconds)?
No
Does the burner stay on
for approximately 8-10
seconds and then shut off?
No
Yes
Turn on gas
supply line.
No
Purge gas
line.
No
Check inlet pressure and
limit switches.
Check circuit board for flash
codes. Consult factory.
No
The heater can shut down due to:
• Improper grounding
• High winds.
• Taking combustion air from the attic.
• Dirty environment.
• Fluctuating gas pressure.
• Pressure switch opening.
Yes
Troubleshooting ends.
For more information, contact
your local representative or the
factory for further assistance.
Yes
No
Bypassing any switch is intended for testing purposes only. Do not leave switch bypassed during normal
operation or the heater’s built-in safety mechanisms will be compromised.
NOTICE