M1MB070AW Pressure switch open lockout problems
Posted: Sun Nov 25, 2012 11:30 pm
I really appreciate your help, I am currently having trouble with my pressure sensor. In the last few days my furnace has failed to ignite due to a "Pressure switch is open" failure. It has tripped due to this error 3 or 4 times in the last 3 days. the induction fan is running, but the furnace continues to blink twice indication pressure switch is open. After taking off the cover and messing around with the connections it randomly stops blinking and starts to fire up. I am wondering (hoping) that this is a simple pressure switch failure but I am not sure. I had the furnace completely replaced less than a year ago. I've also noticed a couple times when the furnace is firing up the gas valve clicks loudly 3 or 4 times as opposed to the normal 1 time to open up and ignite the flame.
Worst case scenario, if I need heat desperately (temperatures can get to -40 where I live) is there anything I can do with the wires and/or sensor to bypass this error in the meantime while I try and fix it?
Thank you very much.
Worst case scenario, if I need heat desperately (temperatures can get to -40 where I live) is there anything I can do with the wires and/or sensor to bypass this error in the meantime while I try and fix it?
Thank you very much.