I have a similar problem with a Luxaire unit. I came home one evening and found the blower running even though the stat was off. I had to shut the power off to stop it any suggestions on this one? The blower motor is free and no unusual noise. I also have a fault code (4 led flashes) “single long duration limit opening”.
I have a similar problem with a Luxaire unit. I came home one evening and found the blower running even though the stat was off. I had to shut the power off to stop it any suggestions on this one? The blower motor is free and no unusual noise. I also have a fault code (4 led flashes) “single long duration limit opening”.
sounds like your main limit is stuck open. If the limit is open it means blocked air flow. Check your filter and make sure all your registers are open. You will need to replace the limit if it is stuck open and not resettable.
Do you know where the switch loction is? Its not a filter and i dont know how it would get blocked and all registers are open. could ths anomaly be the blower relay? Which just so happens to be mounted to a circuit board.
The limit is located to the left of the drat motor below the burner box. If the blower is not running then it could be the control board, motor, or capacitor.
Last edited by hvactechfw; 09-26-2011 at 04:08 PM.
Sir we do not have a furnice this is a package unit w/heatpump. My suspicious are the same as yours blower motor board or capictor. I would like to isolate which one it is before i spend the money replacing any parts. Do you know how i can do this?
Reading back thru your posts I see you stated that blower motor runs. If this is the case it is not you motor or capacitor. I need more info on your unit to help you diagnose it. Model number? Sorry about the confusion it helps when you post your own thread instead of posting on anothers thread.
Linear Mode
