A flameout shows up as a flame failure lockout on the safeguard, which must close the fuel valves within its response time. Causes include a sudden drop in gas pressure, water in oil, air leaks in the oil line, a gust of downdraft, or a flame pushed off the head by too much air. Operators log how often flameouts happen, because a pattern points straight to the cause.
Two flameouts on the evening shift, both right when the dryer line kicked on, sounds like gas pressure sag to me.
Also heard as
- flame out
- flame failure
Related terms
Lockout
A safety shutdown that holds the burner off until someone presses a manual reset.
Flame scanner
The sensor that proves to the burner control that a flame is actually present.
Gas train
The string of valves, regulator and switches that controls and safeguards gas on its way to the burner.
Nuisance trip
A safety shutdown or lockout caused by a faulty or marginal device, not by a real unsafe condition.