Nordyne M1MB 070A BW no ignition
Posted: Tue Nov 02, 2010 11:29 pm
Hello having trouble with the furnace (3years old cleaned it last winter it seems to run dirty)when calling for heat Thermostat turns on the draft fan, but the electric ignition does not seem to light the pilot or burner( no clicking sound thought it used to click). The furnace worked the day before.
I can smell gas (Propane). Getting the red LED light blinking twice =(pressure switch open). No yellow LED.. AC works blower moter etc. pulled the gas valve essembly out and cleaned every thing disconnected the lead wires to the ignition and while calling for heat with draft blower on could not get any current going to the igniter(with igniter disconnected). I have read many of the FAQS here and it sounds like there is a pressure switch that senses the draft fan and in turn charges the igniter and or opens the gas valve? Put everything back together but same results.
I had trouble last winter getting the main burner to ignite but once I cleaned all the soot out it worked fine.
I can smell gas (Propane). Getting the red LED light blinking twice =(pressure switch open). No yellow LED.. AC works blower moter etc. pulled the gas valve essembly out and cleaned every thing disconnected the lead wires to the ignition and while calling for heat with draft blower on could not get any current going to the igniter(with igniter disconnected). I have read many of the FAQS here and it sounds like there is a pressure switch that senses the draft fan and in turn charges the igniter and or opens the gas valve? Put everything back together but same results.
I had trouble last winter getting the main burner to ignite but once I cleaned all the soot out it worked fine.