The U.S. Consumer Product Safety Commission and A.O. Smith Electrical Products have issued a recall of motors for a whole house exhaust fan. The motor's wiring can me wired incorrectly causing the motor to overheat and pose a fire hazard.
To see if you have one of the recalled motors look for the rating plate on your motor. The model number and service can be found there. The recalled model numbers include S56A30A54 and S56A30A97, and service date codes 032076M – 334076M, 03207JY – 33407JY, and YB07 – YL07. Motors that have a sticker stating that they have been rewired are not included in the recall.
For more information see the press release or A.O. Smith's web site. You can contact the company to get your motor inspected and repaired buy calling toll-free at (866) 567-3878 between 8:30 a.m. and 7 p.m. ET Monday through Friday or start the process online.