Budget Appliance Repair, on 06 April 2012 - 04:42 AM, said:... parts list and it listed the operation t-stat as: "660039 Thermostat, Internal Bias", so I ASS U MEd that it had the bias heater.
yes, that is the correct Thermostat (with internal bias heater)
but that model doesn't use the "bias heater" (to fool it into turning OFF earlier)
Heater turns OFF at Thermostat actual rated temperature
660039 is an old part# which converts to new part# 694674 which is a replacement Adjustable dryer cycling thermostat kit L135-155 without a bias heater. I don't believe the original 660039 had a bias heater in it either, (probably just kind of standard parts list wording since most do have the bias heater?).