While trying to light off a burner on a semi-automated boiler, you note that the fuel oil solenoid valve at the burner will not stay open. Which of the following conditions could cause this problem?

Question

Accepted Answer

The forced draft air supply has failed.

Answer

The flame scanner is adjusted for excessive time delay in the ignition trial circuit.

Answer

The solenoid coil is energized causing the valve to remain closed.

Answer

The fuel oil pressure at that burner is too high.

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