Carrier over AMP

[snsmetal]

Mod #48tmf025 100% o/a pops blower braker. Any way to set max open on econo

[Coolmaniac]

I'm not familiar with that particular model number, but Carrier units large enough to have a breaker for just the blower are similar. Its unlikely the economizer will cause this. Its a motor, belt, or blower problem. There is usually an adjustment on the damper motor or via the linkage.

[freonrick]

sounds like the blower is not set up right. Assuming the breaker and wiring is ok. 100% outside air you are moving more air than you are when going through return air. Is the return big enough? For now I would adjust blower speed to get the amps where you need it while the outside air is open. Then I would get an air balance to see where you are at.

[Dallas Duster]

What is the lenth of your supply duct and return duct ,what controller is on the economiser?

[sparks]

Some chuckle-head might have just opened the sheave instead of adjusting the belt correctly. Wish I had a dollar for every time I've seen that. Check here http://www.xpedio.carrier.com/idc/groups/public/documents/techlit/48h,t-4pd.pdf for the blower charts though to see what it should be.