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Danny Hunt
Danny Hunt Posted on Dec 12, 2017
Answered by a Fixya Expert

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I have an Observer Thermostat that's about 1 yr old. It's reading 5 degrees higher than 2 different digital thermometers. Is there a way to calibrate these things?

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artie g

artie g

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  • Master 873 Answers
  • Posted on Dec 12, 2017
artie g
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There is no way to calibrate the thermostat. It is set at the factory with an accuracy range of 2 to 3 degrees. It also can be the location of the thermostat. Even the wall it is mounted on can contribute to heat range. It is also measuring the ambient temperature in the room, which can vary depending on the contents of the room. If it aint broke, don't fix it. It is getting too cold to fiddle with the thermostat.

5 Related Answers

A

Anonymous

  • Posted on Dec 16, 2007

SOURCE: Oven Doesn't Reach Set Temperature

Check the element for burns/wholes this was problem for our.  Easy fix and part is about 35 to 40 dollars.  

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aborcass

Ron Coons

  • 2651 Answers
  • Posted on Nov 27, 2008

SOURCE: Oven temperature only gets to within 20-25 degrees of temp. set

next to last page in your manual


Adjusting Oven Temperature
 Oven temperature has been factory calibrated and tested. If
oven consistently over or under cooks food, adjust thermostat.
Oven temperature can be increased or decreased 35°F. To
avoid over adjusting oven, move temperature 5°F each time.
1. Push BAKE pad.
2. Press + pad until an oven temperature greater than 500°F
shows in display.
3. Immediately push and hold, approximately 5 seconds,
BAKE button until “00” appears.
4. Press + or - arrow pad to adjust oven temperature.
• To increase oven temperature (for a hotter oven), Press
pad until a positive number appears in display.
• To decrease oven temperature (for a cooler oven),
Press pad until a negative number appears in display.
5. Press OVEN CANCEL pad to save adjustment.
• Setting is saved if power fails or is disconnected.

heres a link to the entire manual if needed
http://shop.amana.com/assets/pdfs/literature/32103601.PDF

kachbibi1

Bill Dickerson

  • 979 Answers
  • Posted on Feb 15, 2009

SOURCE: Maytag oven needs temp calibration

Take your temp knob off and look in the center of the stem and you should find a small set screw. Using a small precision screwdriver, turn the screw until you see the light come on. (You won't have to turn it far.) Turn it a little at a time, maybe a 1/16 of a turn. Leave your thermometer in the oven with the door closed and at or near the temp probe that is in the oven. This way, you are getting a true reading.

fixyourboard

Fix Your Board

  • 310 Answers
  • Posted on Oct 14, 2009

SOURCE: I need to calibrate an electric oven

Probably. There is often a key sequence that will enable a calibration mode. We need the full model number to find the tech info, or you can probably find it in the tech sheet which is normally taped on behind the control panel.

Oloyede Monsuru

  • 1468 Answers
  • Posted on Aug 27, 2010

SOURCE: My oven is not getting

hello,

you will have to filling the fluid

After filling the reservoir with fluid, set the temperature:

1. Set the Safety Thermostat (OTP) knob on the rear panel to full clockwise position, then press the
Power switch ON. The pump starts to operate. The LED display indicates the power up self-test
(8888). You are now ready to set the front panel controls to the desired temperature setting.
2. Press the SET/ENTER button. The degree light flashes indicating the temperature can be changed.
3. Turn the INCREASE/DECREASE knob to the desired setting. This setting is accepted after
pressing the SET/ENTER button or automatically accepted after a few seconds. The degree light
stops flashing and the display indicates the actual bath temperature.
The set temperature may be checked at any time by pressing the SET/ENTER button. Allow sufficient
time for the bath to stabilize at the desired temperature.
If you are unable to raise the set temperature, it is possible that the High Limit is set lower than the set
temperature you have selected. If this happens, set the High Limit to be 1°C or more higher than your
desired temperature.

But if the temperature remain same then you will have to increase it with the below instruction

Setting the High Limit
This feature provides additional set point security by allowing a selectable upper limit set point. If the
fluid reaches the high limit, the unit will shut down and display "HI-L" until the fluid temperature is
reduced or the "HI-L" value is raised. The "HI-L" should be at least 1°C higher than the selected control
temperature to avoid unwanted shut down during regular operation.

TO SET THE HIGH LIMIT TEMPERATURE:

1. Press and hold the SET/ENTER button until the display reads "UNIT".
2. Turn the INCREASE/DECREASE knob until the display reads "HI-L".
3. Press the SET/ENTER button and enter the desired value using the INCREASE/DECREASE knob.
4. Press SET/ENTER or the setting will be accepted after a few seconds.

thank you and thanks for using fixya.

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My oven has had three thermostats fitted recently and an oven thermometer is regestering about 50 degrees cooler. what cani do?
To get a more accurate indication, set the oven to 350 degrees. Place your thermometer on the lowest shelf, take a reading. Place it in the middle shelf, wait for it to stabilize (5 minutes or so), take a reading, place it on the top shelf, wait 5 minutes take a reading, Average out all 3 readings, the average should be close to the thermostat setting.
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I have a Jenn Air JJW9830DDP double oven electric, and the temperature in the oven is about 100' less than what it reads on the display. I tested the temp sensor and it ready 1073 ohms. Any s
Well, your temp sensors can still be bad. If not, there's always a new control board you buy!

However, I wouldn't drink water from that oasis without making ABSOLUTELY sure I'm not seeing a mirage.

The only common denominators between your upper and lower oven temp readings is the firmware and the oven thermometer you are using to visually check the temps.
What type of thermometer are you using to check your oven temperatures with?
If it's not a digital thermometer used specifically for testing ovens, you might just be leading leading yourself astray.
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It's the only way to be as close as possible with a digital probe.

If you have thoroughly verified that your oven is in fact not reading the correct temperature, then you can adjust it +/- 35 degrees F via your oven's control panel.
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The temp. change is displayed at the top of the window.
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Now, if you are still worried about the temp. reading being off, replace both the upper and lower temp sensors. That's all you can do besides replace the main board.
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You may not need anything. Most people test their oven with a dial type oven thermometer. They are slow to react and often not very accurate. When I test an oven or install a new thermostat, I use a digital thermometer with a remote temperature probe, hanging from the center of the oven, which shows the temp in tenths of a degree. I let the oven cycle on and off at least three times, then take the high and lower readings on the next cycle and average that out to see what the actual oven temp is. Most of the time, if there is a dial type thermometer in the oven it is very slow to react. After 3 to 5 cycles, they often show close to what the actual oven temp is, but the only way to know for sure is to use the more accurate digital thermometer. Most ranges with digital displays can be adjusted + or - about 35 degrees. Check your users manual for this info, but don't mess with it until you have checked the oven with a digital thermometer! Please don't bother rating this solution, as anything but a Fix-Ya drops my score. Thanks.
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Jan 08, 2009 • Amana Ovens
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Oven temperature only gets to within 20-25 degrees of temp. set
next to last page in your manual


Adjusting Oven Temperature
 Oven temperature has been factory calibrated and tested. If
oven consistently over or under cooks food, adjust thermostat.
Oven temperature can be increased or decreased 35°F. To
avoid over adjusting oven, move temperature 5°F each time.
1. Push BAKE pad.
2. Press + pad until an oven temperature greater than 500°F
shows in display.
3. Immediately push and hold, approximately 5 seconds,
BAKE button until “00” appears.
4. Press + or - arrow pad to adjust oven temperature.
• To increase oven temperature (for a hotter oven), Press
pad until a positive number appears in display.
• To decrease oven temperature (for a cooler oven),
Press pad until a negative number appears in display.
5. Press OVEN CANCEL pad to save adjustment.
• Setting is saved if power fails or is disconnected.

heres a link to the entire manual if needed
http://shop.amana.com/assets/pdfs/literature/32103601.PDF
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hi If the oven doesn't heat evenly or doesn't heat at all, the oven thermostat may be malfunctioning. First, determine how much the temperature in the oven is off from the control setting. To do this, put an oven thermometer on a center rack inside the oven and turn the oven on for about 20 minutes, with the thermostat set at any range between 300 degrees and 400 degrees Farenheit. If the oven thermometer reads 25 degrees or more lower or higher than the oven control setting, the thermostat should be recalibrated. Here's how to calibrate the thermostat:

Step 1: Pull off the thermostat knob on the control panel. Behind the knob are two screws holding a round, notched plate. Loosen these screws, but do not remove them.

Step 2: With a screwdriver, change the notch setting on the notched plate by turning the plate counterclockwise; for every eighth of a turn, the oven temperature goes up about 25 degrees Farenheit. To turn the heat down, turn the plate clockwise.

Some thermostats can be adjusted by turning a screw inside the control knob shaft housing. To do so, remove the knob and insert a screwdriver into the shaft so that the screwdriver blade engages a screw slot. Turn the screwdriver counterclockwise about one-eighth of a turn to raise the heat about 25 degrees Farenheit. Here's how to test a malfunctioning thermostat:

Step 1: Test the thermostat with a VOM (multimeter) set to the RX1 scale. The thermostat is located directly on the back of the control knob that regulates the heat. To gain access to the thermostat, remove the back service panel to the control panel.

Step 2: Disconnect one electrical lead wire from a terminal of the thermostat and clip one probe of the VOM to each thermostat terminal. If the thermostat is in working order, the meter will register zero. If the needle jumps to a higher reading, the thermostat is faulty and should be replaced.

Step 3: If necessary, replace the thermostat with a new one of the same type.

If you need to replace the thermostat, follow these guidlines:

Step 1: Disconnect the terminal wires to the thermostat and pull off the control knob.

Step 2: Remove the retaining screws. On some ranges, there is a wire running from the thermostat into the oven. This wire operates a sensing bulb that controls the thermostat. The sensing bulb is usually held by a bracket; unscrew this bracket to remove the bulb. Then carefully slip out the wire, the bulb, and the thermostat.

Step 3: Install the new thermostat using a reverse procedure.
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