Coleman Mach III Air Conditioner "gas furnace ignition problems" Questions

furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but

...gas to the furnace Remove and check hot surface igniter being careful not to touch the heat element. If it is cracked or damaged, replace the igniter. PROBLEM: Furnace comes on for 7-10 seconds then ...

...time they can be cleaned an will work well after cleaning. A faulty pressure switch can cause this, too: ...

...gas furnace runs OK some of the time, but will not ignite sometimes unless I switch the thermostat off and on again (2nd thermostat-both problems). May run for days and recycle properly, then quit ...

furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but

furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but

gas furnace, main burner ignites the other 2 don't. then shutdn. Rheem/Ruud Silhouette II gas furnace UGPH07EAUER. HSI (ignitor) lights up at main burner head. Gas flows and is ignited at main burner ...

furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but

furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but

furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but