ASSUMING your heater uses an eye (photocell) as a flame detector, the eye has high resistance when it's dark (no flame). When the flame lights, the resistance of the photocell drops dramatically and "signals" the safety shutdown unit that the flame is lit and all's well, so the safety control allows the heater to keep operating.
If the "eye" is dirty or has failed and doesn't signal the safety unit that the flame has lit, the safety unit "times out" after 30 or 40 seconds and shuts the heater down for safety's sake.
Of course, the "eye" MAY be good and the safety shutdown MAY have failed.
ANYHOW you'll want to repair the safety circuit, or someday the heater will fail to light and (with your wires "jumped"), continue to run and pump all the fuel in the tank into itself and eventually onto the floor (or WORSE)!
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Today's Featured Article - Adding an Hour Meter - by Steven Gussey. This article tells how I added an electric hour meter to my 1942 Farmall H after rebuilding it. I wanted to keep an accurate maintenance schedule for my rebuilt engine and the implements I use with my tractor, but the H was never available with a tach
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