Brant Radiant Heaters DX2 Series Manual page 56

5.0 Troubleshooting Guide
Continued from page 54
After igniter is
No
warmed up, does
gas valve open?
Yes
Does the
No
burner ignite?
Yes
Does the burner
No
stay on?
Yes
Does the heater
No
stay ON until a call
for heat ends?
Yes
Troubleshooting ends
Test for 120 V at valve opening period (usually 30 to 45 seconds
after power to heater). Is there 120 V to valve for 8 seconds?
No
Replace circuit board and/or wiring harness.
Is the gas supply
Yes
to the heater in
the ON position?
No
Turn on.
Does the burner stay on
for approx. 8 seconds
and then shut off?
No
Does the burner come
Yes
on and turn off
immediately (1 or 2
seconds)?
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.
Check to make sure gas pressure is within
minimum and maximum inputs, as indicated on
burner rating plate. Is gas pressure OK?
No
Correct problem.
Check to make sure gas pressure
is within minimum and maximum
inputs, as indicated on the burner
rating plate. Is gas pressure OK?
Correct problem.
56
DX2 Series
Yes
Pressure
switch may
be faulty or
Yes
there is a
restriction in
the exhaust.
No
Yes
Yes