Question about GE JVM1790 1000 Watts Convection / Microwave Oven
Our new GE convection oven JVM1790 preheats very slowly in the higher temperature range. It's supposed to go up to 450 degrees. It preheats quickly up to 350 degrees then slows down to a crawl to get any higher. Our JVM1790 barely makes it to 400 degrees.
I sell appliances at Home Depot and am probably going to test the JVM1790 display to see if it exhibits the same preheating defect. My electric range cannot preheat as quickly to 350 degrees as the JVM1790 convection microwave. But the JVM1790 slows down so much after 350 degrees that the range blows right past it. Any ideas or comments on why our JVM1790 slows down so much after 350 degrees would be helpful.
After jiggling the lower burn element the oven heated up in the normal time. Perhaps a connection had come loose.
Posted on Feb 14, 2009
It may be a bad convection heating element or just a bad thermal cutout.
If it's less than one year old, it will be fully covered under warranty and you can contract GE here to have an authorized servicer come out and fix it free.
If it's out of warranty and you or someone you know wants to check it out, I'd first suggest you take a look at the "mini-manual" hidden inside the unit (behind the control panel, hidden on the left side behind the grille, or attached to the inside of the outer cover) which is very helpful when troubleshooting, & testing.
At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
Otherwise, see these files: safety disassembly
Accessing some parts may require you to pull the oven from the wall and remove the cover.
If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.
You can download GE owner's manuals and installation instructions here.
You can find links to helpful exploded view diagrams and part ordering help here.
I'd recommend that your bookmark this link to your favorites.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Dec 26, 2009
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