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gmbwrenchn 08-07-2011 09:46 PM

Trane XE90
Is there a wire that controls the fan speed on this model ? Thanks.

Master of Cold 08-07-2011 10:02 PM

Look on the control board. You will see a wire running from the fan to a" tap" on the board marked" cool" and another heat. Black is usually the color for high speed. But refer to the diagram of the motor before making any changes

gmbwrenchn 08-07-2011 10:10 PM

Thanks I'll check it out. What are the speeds, if you know off hand. Low,med,hi? Or other.....thanks.

Master of Cold 08-07-2011 11:51 PM

Depends on the fan, some are 3 speed, some are 4

kb3ca 08-08-2011 08:51 AM

My previous Trane XE90 had a four speed PSC blower motor. If you change the speed make sure you check the temperature rise to make sure it's still within specifications. The specifications are posted on the inside panel of the furnace.

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