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Thread: Oven not heating to set temperature?

  1. #1
    Join Date
    Feb 2014
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    Southwestern Ontario, Canada
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    Default Oven not heating to set temperature?

    Model Number: GFG461LVS1
    Brand: Whirlpool
    Age: 1-5 years

    Hi, 1st post here!

    My wife mentioned that she thinks the oven in our Whirlpool gas range is not heating to the proper temperature.
    She was baking two different dishes on two separate days and for each occasion she noticed that they were not baked through as they should be for the given bake time.

    Specifically:

    First occurrence - a meat loaf at 375 has always properly baked in 1hr, this time it took 1hr30mins. Everything was exactly the same as in the past in terms of size, dish, thawed etc, except this time it took 30 mins longer...

    Second occurrence - a banana bread at 350 normally takes 30mins, this time it took 25 mins extra. Again, everything was exactly the same as in the past…

    Is it possible for the gas oven to lose its temperature calibration? i.e.. you set 375 on the digital panel but it only heats to 300…

    Is there a recommended way to test the actual temperature of the oven vs set temperature?

    Are there specific things that I should be listening for during its operation?

    When I program the oven and within a few seconds, I can hear the gas flow, I can hear it ignite - there is flame. Once a temperature is reached, it does shut the burner off (click sound) until it cools a bit and then it reignites to establish the temperature again. I'm just not sure if actual temperature = set temperature

    Thanks!

    Frank

  2. #2
    Join Date
    Jul 2006
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    Murray, Utah, United States
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    Default

    Quote Originally Posted by Francod1
    Is there a recommended way to test the actual temperature of the oven vs set temperature?
    The only way to get an accurate measurement of the oven temperature is with a meter and thermocouple. It sounds like you might have a faulty oven sensor. Measure the resistance of the oven sensor. It should measure 1100 ohms at room temperature. If you don't have a VOM this one is a good investment for twenty bucks. It will pay for itself after the first repair and will come in handy for many other repairs:

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    Oven Sensor W10181986 Order now for same day shipping. 365 day return policy. RepairClinic.com
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  3. #3
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    Feb 2014
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    Default

    Thanks for the quick reply!

    I do have a meter and I can see the oven sensor in the top left corner. Are there instructions by chance on the proper way to remove the sensor in order to access the plug?

  4. #4
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    If the range will slide out from its installation easily, remove the back of the console to access the oven sensor connector on the board. If the range is a slide in or built in or not easily removed from it's installation, remove the two screws securing the sensor inside the oven and pull the sensor wires and the "quick disconnect" connector through the hole. Wrap the connector wires with a piece of black tape to keep it from falling back through the hole when you disconnect it.
    OWNER RICK'S APPLIANCE REPAIR
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  5. #5
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    Hmmm, here is a photo of the sensor in my oven…I don't see the screws that you are referring to. I think in this case I need to pull the back access panel?

    I can slide the range out - it would be limited by the length of the flexible gas pipe, but I think I may have enough room.

    Going in from the oven and pulling the sensor, wire and connector through the hole would be ideal, but I don't think its possible in this case?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  6. #6
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    I think you're right on that style. The parts diagram shows the screws for the sensor going in from the back side. I don't remember seeing that before. When ever possible I go from the back of the range because it's much easier. You should have enough gas line to pull it out far enough to get the back off. Unplug the range first.
    OWNER RICK'S APPLIANCE REPAIR
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  7. #7
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    Hi Rick,

    I removed the temperature sensor to test its resistance.

    I set the meter to ohms with the knob turned to the 2000 value

    I had to stick 2 sewing needles into the front of the connector because the probes on my meter weren't thin enough to go into the connector. In any case the reading I got was 1089 ohms - that's what it settled to.

    I then stuck the probes into the back of the connector (no sewing needles) where the wires go in and the reading I got was 1087 ohms.

    So I think the sensor checks out ok? I believe the video said it should be between 1000 and 1100 ohms...

  8. #8
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    Yes, that correct. Your sensor is good. Check the temperature with your meter when the oven is set to bake 350 and see how far off it is.
    OWNER RICK'S APPLIANCE REPAIR
    APPLIANCE TECHNICIAN FOR 29 YEARS
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  9. #9
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    Ok thanks!

    In order to check the temperature when the oven is on, do I require a special meter? Or, is it the VOM sufficient?

    I imagine that I would need some kind of temp probe that goes in the oven but has wires leading to the meter and the door can then close over the wires?

    Sorry for all the questions..

  10. #10
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    What kind of meter do you have and what's the model number? If yours doesn't have a "K" type connector you need the adapter. It uses the milivolt setting.
    OWNER RICK'S APPLIANCE REPAIR
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