Originally Posted by
denman
2. I didn't check thermistor resistance. Where is the thermistor? On the heater housing there is a fuse and a thermostat. Is the thermistor located elsewhere?
The thermistor is on the blower housing.
There is also a thermal fuse but it kills power to the motor etc. if blown.
3. I tested the heat at the dryer vent outlet on the back of the dryer. I read elsewhere that the heater should cycle at about these temps at this location.
The above looks OK to me so ypou may have an air flow problem between the heater and the blower.
Check that the holes at the back of the drum (heat input) are clean.
Check the lint filter. Sometimes that get coated with fabric softener residue and have to be cleaned with soap and water.
Check that the fins on the blower wheel are clean.
I am assuming that you have already checked tour vent system though usually if it is plugged the thermal fuse on the blower goes but if you have not checked it and the outside vent I would do that.