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 - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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