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GLASS MAINTOP ASSY Part Number PS253905
price around $812.92
Replaced main glass cooking surface on cooktop
First, shut of the breaker to the cooktop.
Then removed two screws to release brackets holding cooktop down. Then lifted the cooktop out of the recess in the counter top and removed the screws around the outside of the glass top. Removed the old, cracked top, by unplugging from the motherboard.
Turned the new cooktop upside down on table and placed weather stripping around the entire underside outside edge (to keep spills from going under the cooktop and cushion the cooktop from the counter top.
Then plugged the new cooktop into the motherboard, replaced screws around outside edge, lowered the cooktop into the recess in the counter, and reinserted the two screws into the hold-down brackets.
Turned the breaker back on.
Note: Just need Screw drivers and 40 minutes of your time.
I don't think I'd glue it down permenantly. I just had to replace the ceramic glass on mine (a JED 8430 ABD) after it cracked. Thankfully, it wasn't glued down so I could replace it pretty easily (ordered part directly from Jenn Air). But some sort of seal to keep food out from under the cooktop would be nice. I just wouldn't go permenant. The fact that you have to tape the down draft to the external vent should keep the cooktop in one place (plus its own weight).
Check that the burner orifice nozzle (the round thing that comes off) is properly seated on the burner manifold. Mine have a tab that must interlock.
Make sure all your burner orifices are CLEAN. Scrub them with a plastic kitchen scrubber, soap and water.
The way this works is, when a burner is turned on, the sensing mechanism for the spark control reads the ionization of the flame. No flame, no ionization, keep sparking so gas buildup is minimal in the area before a flame is ignited. )Kinda like the spark thingy's underneath the shuttle, without the ionization sensor's, just before it launches.).
sounds like yo u have a faulty home switch. when dropped to lowest setting it should switch off electric. however if switch is bad never senses its down adn thenwants to open back up. there should be an acces panel in lower right corner of unit along witha wire diargam