United States 88V138000
FREIGHTLINER LLC
The problem
THE HEATER/AIR CONDITIONER BLOWER MOTOR SPEED CONTROL RESISTORS CAN UNDER CERTAIN CONDITIONS OVERHEAT AND STALL.
Risk
THIS COULD RESULT IN LOW AIR FLOW ACROSS THE RESISTORNETWORK AND HIGH AMPERAGE, ALLOWING THE AIR DUCT TO REACH ELEVATED TEMPERATURESWITH THE POSSIBILITY OF A FIRE.
What owners should do
INSTALL A THERMO CUTOFF DEVICE IN THE HEATER/AIR CONDITIONER SYSTEM AND/OR REPLACE THE BLOWER MOTOR SWITCH.
Units 19898