Whirlpool 1997 "E" - Manual (Page 44)

3-4
The base thermal fuse is located directly be-
hind the control panel. It is a normally-open
fuse that, when closed, activates the blower
motor at a low speed. There are three thermal fuses in the OTR
Microwave Oven. They are: the magnetron
thermal fuse, the cavity thermal fuse, and the
base thermal fuse. The magnetron and cavity
thermal fuses are located inside the high-
voltage section of the oven. These two ther-
mal fuses are normally-closed, and will open
at a set temperature to disable the oven. Both
of these fuses are resettable.
Magnetron Thermal Fuse Opens @ 228˚F/109˚C Resets @ 140˚F/60˚C
Cavity Thermal Fuse Opens @ 230˚F/110˚C Resets @ 140˚F/60˚C
Base Thermal Fuse Closes @ 133˚F/56˚C Resets @ 104˚F/40˚C
BASE
THERMAL FUSE
CAVITY
THERMAL
FUSE
MAGNETRON
THERMAL FUSE
THE THERMAL FUSES
POSSIBLE CUSTOMER COMPLAINT:
The unit turns on by itself.