The blower-motor fan on the Sol Aire gas furnace in my '77 Kingsley runs for
about a 50 seconds, stops for 5 seconds, runs again for 50 secs. then stops
again, and so on. It keeps repeating this cycle with no ignition spark
showing through the sight glass and, consequently, no burner lighting. I
visually inspected the spark electrode and it shows no cracks and it checked
okay for continuity to its "spark-plug-type" terminal. A device called a
"flame switch" has 12 VDC leads to it but I don't know its function or how
to check this device. There is 12 VDC at the gas solenoid valve, plenty of
propane in the tank, pressure is good and all valves are open. For some
reason, their is no ignition. Any ideas?
Bill Mac
about a 50 seconds, stops for 5 seconds, runs again for 50 secs. then stops
again, and so on. It keeps repeating this cycle with no ignition spark
showing through the sight glass and, consequently, no burner lighting. I
visually inspected the spark electrode and it shows no cracks and it checked
okay for continuity to its "spark-plug-type" terminal. A device called a
"flame switch" has 12 VDC leads to it but I don't know its function or how
to check this device. There is 12 VDC at the gas solenoid valve, plenty of
propane in the tank, pressure is good and all valves are open. For some
reason, their is no ignition. Any ideas?
Bill Mac
