Recalls and Service Alerts

Furnaces - Air Conditioners - Heat Pumps

40″ 80% Furnace Induced Draft Blower Assemblies

Type: Service Alert
Equipment: Furnace
Recall or Alert Date: 11-21-1994
Serial Number: GF-125
Brands Affected: Amana

Description of Problem:

In some installations the Fasco induced draft blower assembly (Amana part number 11009001) used on the new 40" 80% furnaces has been found to produce objectionable sound levels, often described as a humming sound. This humming sound has been identified as a vibration caused by shaft motion or hunting in the induced draft blower motor. On motors where the shaft travel is at or near the outside limits of its tolerance, the motor shaft will hunt back and forth at a frequency of 120 HZ. This hunting or cycling may cause a vibration of sufficient intensity to create a resonance in the sheet metal components of the furnace, ductwork, or vent system. Our testing and field inspections have indicated this condition affects no more than 10% to 15% of installed units.

Affected Products:

Amana 40" 80% Furnace

Source:

Amana