Dear Master of Infinite Appliance Awareness,
Please forgive me if I'm redundant in my question. I can't seem to find a solution in searching the site data. Feel free to point me to it if you are prone to ponder...who IS this numbskull and why can't he read?
My Whirlpool Duet Dryer (GEW9250PW0) is overheating to the point of blowing the thermistor. I've replaced the thermistor & hi-limit thermostat. Tested the cycling thermostat and cleaned the machine thoroughly including the less than 5 foot exhaust vent, the blower path, (all the way to the blower) and brushed/vacuumed the inside of the machine completely. The blower is powerful enough to be blowing the outside damper open COMPLETELY and consistently. I've also removed the heater element, found no breaks in the coils & tested it for continuity which was good. There is also no sign of any part of the coils touching the chassis anywhere. The dryer diagnostic test comes up "88" which is a system "ok".
That's the b/g....here's my question. What I DID find that seemed unusual was a horizontal hairline crack in the heater element chassis on the upper end opposite of the element terminals. That portion of the chassis was also visibly darkened from the excessive heat and the lower end was not. The crack was not, (and looks to have never been) dramatic enough to slope or in any way and was only across the center portion of the chassis and did not break on the outer frame. I'm assuming, (perhaps incorrectly) that because the element works, the crack is not a functioning factor or grounding the element. Am I all wet in my assumption? Finally, although the element tested good for continuity on my analog ohmmeter, I get a ZERO reading when I test either post by touching one meter cable to the chassis. That is to say....the meter doesn't move AT ALL. My meter is set on the lowest ohm measurement (1k) for THAT test. Am I missing something about the crack that is in fact grounding the element?
Thanks much! I look forward to your infinite wisdom!