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 !
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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 !
Exact model number?
Carrier # 58MVP
Here is your manual
http://www.xpedio.carrier.com/idc/gr.../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.
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