only blows on high
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Elder User
Joined: Jan 2004
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only blows on high
I know I have run into this problem before, but have forgotten what the problem is. My heat only blows on high. I can't remember if that means it is the blower motor or the regulator up near the firewall. I had this happen about 4 years ago, but have since forgotten what causes it. None of the other selections work...not on low med..etc.
Elder User
Joined: Dec 2004
Posts: 718
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From: North Jersey, New Jersey
Well there are two ways to limit the speed of a blower by the means of a resistor network or by providing separate windings on the motor for different speeds. Each separate winding would have less or more turns to regulate speed.
On the Aeros they went the resistor network route which simply regulates the voltage entering the blower. Heres a schematic of the blower speed circuit you should only need to replace the blower motor resistor network.
On the Aeros they went the resistor network route which simply regulates the voltage entering the blower. Heres a schematic of the blower speed circuit you should only need to replace the blower motor resistor network.
