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i. Troubleshooting Flowchart - Quick Reference...
Second Visual Check
Spark Present But Main Burner Does Not Come On
Is main valve wiring securely
attached to terminal M.V.(3)
and ground?
No Yes
Is 24 VAC present
between terminals M.V.(3)
and ground?
No Yes
Check for continuity in
wiring from M.V.(3) to gas
valve, and gas valve to GR.
No Yes
Is inlet gas pressure per
manufacturer's specifications?
No Yes
Is spark gap .125 in.(3.175 mm)
and in gas stream?
No Yes
Secure wiring to
M.V.(3) and ground.
Replace
DSI module
Set gas pressure
Natural 3.5 inches W.C. (8.7 mb)
L.P. 10.5 inches W.C. (26.1 mb)
Correctly adjust the
gap and position of
spark ignitor.
Determine
why continuity
does not exist.
Replace
gas valve.