Brant Radiant Heaters QTD Series User Instruction page 38

5.0 Maintenance • Troubleshooting Guide
Continued from page 36.
No
Yes
Test for 24V at valve opening period (usually 7 to 10 seconds
after power to heater). Is there 24V to valve for 15 seconds?
Do the burners
stay on?
Yes
Does the heater stay on
until the call for heat ends?
No
Yes
Troubleshooting ends.
Diagnostic Indicator
LED MODE
1 Flash Start up.
2 Flashes Flame. No call for heat.
3 Flashes Ignition lockout.
4 Flashes Valve relay lockout.
Yes
No
Replace circuit board.
Do the burners stay on for approx.
No
15 seconds and then shut off?
Do the burners come on and turn
off immediately (1 to 2 seconds)?
The following can cause the heater to shut down:
• Improper grounding.
• High winds.
• Dirty environment.
• Fluctuating gas pressure.
38
No
No
Contact factory.
QTD Series
Yes
Yes
Yes