ronald osowski
Jan 17, 2009, 03:08 AM
I have a Carrier 2 stage ,Hi efficiency furnace, about 10 yrs. Old. Works fine, until stage 2 of the blower kicks in. Then it always kills !
hvac1000
Jan 17, 2009, 11:00 PM
Here is your manual
http://www.xpedio.carrier.com/idc/groups/public/documents/techlit/58mvb-1pd.pdf
I would be looking at the pressure switches. I believe that one is for the first stage and the other for the second stage.
This is one of Carriers most complex units so I suggest getting a service man who is familiar with this product to do a On Site Service call to get it squared away. That is all I have on this unit.