Sparks from the thermostat control! - frigidaire oven

F20 is a communication error between the display control board and the relay control board. Pull the oven forward and remove the back panel. Check the wire connections between the display board and the relay board. If the connections check good, replace the display control board

Check all of your high limit safety switches. Possibility you may have fried the transformer on the main control board

try check sensor thermo..maybe its bad..replace new one.cause its cant control heater.

We were able to trouble-shoot our gas oven before calling the repair man. Our oven reached temperature but did not reheat when it cooled down. Our troubleshooting included taking out the storage drawer and looking at the underside of the oven near the valve.

First check if you can see the flame when the oven is on.

Use an oven thermometer in the oven to test if the oven gets to the desired temperature first. Does it get close to the desired temperature and stay near there for your entire bake time? If it does, you may need to adjust the thermostat setting. (This should be in your manual. Many Frigidaire manuals are available from their support site: http://www.frigidaire.com/Customer-Support/Videos--Manuals/ . )

Since our oven was reaching the set temperature and then not reheating, we had one person crawl under the oven and tap on the regulator when the oven needed to reheat. (We could see the ignitor spark.)

If the oven isn't heating at all, then the thermostat, the gas valve, controller or ignitor are suspects. Can you see the spark of the ignitor? Then it's probably not the issue. Similarly if you see the flame coming on several times during the bake cycle, it's not likely to be the valve. If you have a multimeter, you may be able to check the thermostat and controller for any breaks in the wire.

In our case, since the valve was failing, we ended up replacing the 10-year old range. (We looked at the price of a new range versus part and labor cost for the replacement. The part and labor was more than 50% of a new range.)

I hope this helps.

Cindy Wells

You need to check the oven cycle relay,

1. Before repairs or testing can begin you must disconnect the electricity at the fuse panel, at the circuit breaker panel, or by pulling the plug. Make sure the power is off before proceeding. A jolt from 220 volts can be fatal, use caution!
2. In order to gain access to the oven cycling relay, refer to your owner's manual. Removing the back panel of the range accesses most relays, but some ranges locate the relay under the oven compartment where the utility drawer is usually located.
3. Now you can test the relay using your VOM. First, label each wire attached to the relay and remove them from the relay terminals. Using your VOM's ohmmeter function, set the range to R x 1 and touch one test lead to the terminal marked L and the other test lead to terminal H2. There should be NO continuity. Next, test the terminals marked H1 and H2. Again, there should be NO continuity. Finally, test the S and R terminals. Continuity should exist between these two terminals. If your relay does not pass all these tests, it is defective and should be replaced.
4. To remove the relay, undo the two screws securing it to the range and replace with the correct new relay. Refer to your wiring diagram and labeled wires to ensure that the wires are on the correct terminals. Now replace the back panel or drawer and test the oven.

Then you check the oven thermostat: When testing the thermostat switch contacts for continuity, refer to the wiring diagram and remove only those wires being tested - and only one pair at a time. Test switch contact terminals as per your wiring diagram. If the switch lacks continuity at any of the contact terminal points then the entire thermostat switch needs to be replaced. Adjusting the thermostat: Test the oven temperature by placing the tester in the oven's center and leaving it for 30 minutes at 350 degrees. Record the minimum and maximum temperatures of three cycles, then add those figures together, divide the result by six and you have the oven's average temperature.
If the average temperature is more than 25 degrees off, try calibrating the thermostat by following your appliance manual instructions for thermostat calibration.
Normally, thermostats are calibrated by pulling the oven's thermostat knob off, turning the knob over and adjusting the calibration ring on the back. If your oven doesn't have a calibration ring you may need to replace the thermostat.
To remove the thermostat: Disconnect the capillary tube and push it through the back oven wall, being careful not to break the flammable capillary tube wire. Remove the screws that secure the thermostat to the control panel and gently pull the thermostat out, leaving the wires in place. To install a new thermostat, reverse the disassembly procedures (Step 7 above), transferring the wires individually from the old unit to the new.
Hope this information helped you.

Hello there:

An oven thermostat is a switch that opens and closes in response to the temperature it senses. It is typically found in the control panel, where a liquid-filled temperature-sensing bulb senses and maintains the internal oven temperature by cycling heat on and off.

1. Before repairs or testing can begin you must disconnect the electricity at the fuse panel, at the circuit breaker panel, or by pulling the plug. Make sure the power is off before proceeding. A jolt from 220 volts can be fatal, use caution!



2. Access the oven thermostat, which is located in different places depending on the make and model:
   1. On freestanding ranges, access the thermostat by removing the screws that hold the back panel in place at both ends.
   2. On models with front-loading controls, remove the panel and tilt it for access. Be careful not to let the wires disconnect from their components.
   3. Some built-in models have a removable backsplash. Lift the backsplash, rest it on the cook top and remove the screws from the backsplash, which holds the rear panel.
   4. On wall ovens or eye-level ranges, access the control panel by opening the door and removing the screws that secure it. The screws may be under the exhaust hood or below the control panel. If the control panel is hinged, simply tilt it towards you.
   5. On some models both the rear and front control panels must be removed. The screws may be found on the trim and occasionally the trim must be removed.
   
   
   
3. When testing the thermostat switch contacts for continuity, refer to the wiring diagram and remove only those wires being tested - and only one pair at a time. Test switch contact terminals as per your wiring diagram. If the switch lacks continuity at any of the contact terminal points then the entire thermostat switch needs to be replaced.

   Adjusting the thermostat:
   

4. Test the oven temperature by placing the tester in the oven's center and leaving it for 30 minutes at 350 degrees. Record the minimum and maximum temperatures of three cycles, then add those figures together, divide the result by six and you have the oven's average temperature.



5. If the average temperature is more than 25 degrees off, try calibrating the thermostat by following your appliance manual instructions for thermostat calibration.



6. Normally, thermostats are calibrated by pulling the oven's thermostat knob off, turning the knob over and adjusting the calibration ring on the back. If your oven doesn't have a calibration ring you may need to replace the thermostat.



7. To remove the thermostat:
   1. Disconnect the capillary tube and push it through the back oven wall, being careful not to break the flammable capillary tube wire.
   2. Remove the screws that secure the thermostat to the control panel and gently pull the thermostat out, leaving the wires in place.

To install a new thermostat, reverse the disassembly procedures (Step 7 above), transferring the wires individually from the old unit to the new.

Normally you should have an appliance spare parts supplier in your area. They generally stock all range of spares for all appliances. You need to pull plug out of the wall and remove the panel covering the wiring to gain access to the oven thermostat. Look carefully on the body of the thermostat and record any numbers you see on a sticker that's present. Then remove knob off in front of thermostat and see if there is a nut attached to the centre which holds the thermostat in position or if there are 2 screws holding the thermostat in place. Use this information to order the thermostat also quoting the oven model number.

check bake and broil elements and breakers

You probably tripped a safety thermostat in the back of each oven. If you turn off the breaker and find a way to pull the units out you could probably remove the rear panel and reset the thermostat by pushing in a button on the back of the open thermo. Some thermo's aren't resettable though so you'd have to buy a replacement.

This is ovenmad from the previous post. I had a repair guy come out and he found the problem to be the Safety Thermostat. When tripped, this allows everything to work on the oven except the elements. He did not have the part with him so will return in 6 days to replace it. That should solve the problem. No idea why it tripped. The safety thermostat is located on the rear of the oven so we will have to pull out the oven to replace the thermostat. Again, this was a Frigidaire Single Electric Wall Oven made in 2004. Hope this helps somebody else.