It takes a very long time to preheat the oven up to 350-400 degrees

Relay . Also u have to update ut menu program using hi density card account with latest program .....

First of all, most oven thermometers move very slowly compared to the electronic sensors and controls on the oven. To make sure you are getting an accurate reading, the thermometer should be in the center of the oven, the oven should be preheated, then wait another 20 minutes after the preheat beep. If the temperature is less than 35 degrees higher or lower at this point, it can be adjusted via the controls. Usually on GE ovens you press and hold bake and broil at the same time until SF comes up in the display. Then press bake, then use the arrow keys to raise or lower the temperature setting. If the temperature is more than 35 degrees off, you may have a bad sensor, bad control board, or other problem.

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Try setting the temp 25 degrees lower than what is called for. This is a common issue with convection ovens.

Hi,
If your electric oven is taking too long to heat or just not heating up right,then check out this tip that will give more detail about your problem.

Oven Problems Electric Oven is Heating Slowly or Poorly

heatman101

Hi,

If your electric oven is taking too long to heat or just not heating up right, then check out this tip that will give more detail about your problem.

Oven Problems Electric Oven is Heating Slowly or Poorly

heatman101

hi
there is no problem
the time you want is depend the quility of the electricity
that your network have

Hi,
Check out this tip that I wrote about this problem...

http://www.fixya.com/support/r4511800-oven_problems_electric_oven_heating

heatman101

Sadly ours performs this way also. I've always had GE wall ovens and NEVER did they take very long to get up to temperature.
Has anyone else communicated with you about this problem?

if you cant program it for more than the 270 you may have changed it from farienhiet ( bad spelling) to celcius. pushing and holding broil may switch it back.

possible thermostat is sticking