GE Range Model # JSP26GOP1AD

[Waneewek]

I have a GE range that is not heating up accordingly.  I set the oven to 350 and in about 30 seconds the LCD starts reading 225, 250, 265, 275 and so on until it reaches 350 degrees and then it beeps indicating that it is up to the set baking temperature and the baking element shuts off.  But, my thermometer inside the oven is reading 145.  I checked my oven sensor at room temp and it was around 1085 ohms, so I'm guessing this isn't my problem.  Does this mean that the ERC is bad or is there something that can be calibrated?  Thanks for your help.

Wan

[Pegi]

What happens when you let it heat up for at least 20 minutes......that is about the proper time for an oven to get up to temperature...

[Waneewek]

I  didn't wait to see if it actually made it up to the temperature.  I'm guessing that it doesn't.  The oven is suppose to be to temperature when it beeps, right?  When I'm watching the temperture rise in the display it just climbs so fast to the set point and then shuts down the element as though it is satisfied. 

[Pegi]

The oven is suppose to be to temperature when it beeps, right? Not really true, most people think it will be but ovens really need at least 20 minutes to get to the correct temp...

[Waneewek]

I understand that it takes about 20 minutes to heat up, but the LED read out on the ERC is telling me that the temp is 375 and that the oven is to the temperature I set it at.  At that point the heating element isn't on any longer.  Can the ERC be calibrated?

[Moostafa]

Hello, my uncalibrated friend. Unfortunately, the manufacturers do not provide sufficient information to calibrate or even repair the ERC. Consequently, it is usually replaced in toto once it it determined to be defective. However, a fun fact to know and tell is that most of the time, the problem that develops with these control boards are the capacitors begin leaking and no longer hold the correct charge. If you are so included, you can refurbish your ERC for about $5 worth of capacitors from your local Radio Shack. Prior to embarking on this, however, it would be prudent to get another resistance reading on the sensor at a temperature other than room temp. For example, if you placed the sensor in boiling water, you can then measure it's resistance at 212F. If the sensor resistance increases proportionately, then you may confidently conclude that the ERC is defective and requires repair or replacement.

[Waneewek]

Thank you!  I did check the sensor again after it was heating up for a while and the ohm reading was about 1400.  I'm not sure what the temperature was at the time of the reading.  Do you have a temperature/resistance comparison chart for testing sensors?  If so, I would greatly appreciate a copy of it.

Thanks,

Wan

[Budget Appliance Repair]

And, YES, the ERC's can be calibrated, but only usually +/- 35 degrees. Usually the tech sheets will have instructions on how to put the control into temp adjust mode.

Did you also check the sensor wiring up to the control, not just the sensor at it's own connector. Sometimes the connectors in the sensor wires can get bad causing to high of an ohms reading at the ERC making the ERC think it is hotter then it really is. The correct way to check the sensor is at the connector right at the ERC, that way you are checking all wiring, connnectors and sensor.

[Waneewek]

I looked at the tech sheet and didn't see anything in regards to calibrating the ERC.  When I took my ohm readings they were at the connector on the ERC.  I will check the Tech sheet again just in case I missed it. 

Do you know if there is a resistance to temperarure comparison sheet for Oven temperature sensors?

Thanks for your help!

Wan 

[Pegi]

Oven Sensor Resistances

Temperature (°F)

Resistance (ohms)

100

1143

200

1350

300

1553

350

1654

400

1753

500

1949

[Budget Appliance Repair]

I don't really think the user setable calibration will do you any good from what you have told us so far.

The usually way to put most of the ERC into calibrate mode is push <BAKE> run the bake temp up as far as it will go then push and hold <BAKE> again until it goes into calibrate mode.

The temp display will change to 00 if it is still set at the factory 0 setting or maybe some other number from 35 to -35 if someone has already changed the temp offset.

If that works and you get into the calibrate mode you then push the temp up/down buttons to put the offset to whatever you think you need. When it is were you want it, push <BAKE> again to lock it in.

[Waneewek]

Thank You Pegi !