22

j. Troubleshooting Flow Chart - Quick Reference...

Third Visual Check

Main Burner Lights But Will Not Stay On

Is flame sensor cable
securely attached
to sense (4) terminal?
No Yes
Does continuity exist
from control
to flame sensor?
No Yes
Is flame sensor corroded
or is ceramic cracked?
Yes No
Does continuity exist in
ground path from burner
to control?
No Yes
Check flame sensing current
during trial. Is current
greater than 0.3
ยต
A DC?
No Yes
Reattach flame
sensor wire to
sense (4) terminal.
Replace
sensor
cable.
Check connection.
Is flame sensor positioned per
manufacturer's specifications?
Correct or
replace sensor.
Replace
DSI module
Readjust per
specifications
No Yes
Replace
DSI module