Roper oven model FEP310GW0. Oven will not heat

One of the prime causes of your electric oven cutting out is the thermostat, this is a safety procedure that will protect your oven from getting too hot. ... The only real way to solve this problem is to replace the thermostat to ensure your oven doesn't heat up too much.

https://www.repairaid.co.uk/oven-repairs/my-electric-oven-cuts/

Sometimes the oven thermostat or oven sensor can be calibrated wrong, or it may be faulty. If your particular range has an oven that uses an electronic thermostat, and the oven temperature is off by tens of degrees, you probably have to replace it.
On most units that have a mechanical thermostat, you can actually remove the thermostat knob, and adjust the knob to more accurately represent the actual setting of the thermostat. On many models, there's a screw on the back of the knob with a small calibration plate or ring. You can loosen this screw and adjust the calibration plate. Remember to tighten the screw again. If yours isn't adjustable, and the temperature is off by a large amount, you should just replace the thermostat.

Or Oven safety valve needs to be checked with multi meter ohms / voltage

ALSO Test the Burner Heating Element

There is no such thing as a hidden heating element.

The bake element
is the heating element that is found at the bottom of the oven. Most electric ovens use both the bake element and the broil element in a bake cycle, with the bake element performing 90% of the heating. If the bake element isn't working, the oven may not heat. To help determine if the bake element is defective you should first do a visual check. If the element is blistered or separated then it should be replaced. If the element appears to look normal, then turn the oven on to a bake function for a minute and then turn it off.

Check the element for signs of heating and if it is still cold then it may be defective. Disconnect the power and then remove the back panel. First check the wires as they may have become loose or corroded. If the element appears to be fine visually, test it for continuity with a multi-meter. ( by placing the each of the meter prongs on each end of the heater element connectors) If the element is burned or no longer has continuity, it will need to be replaced. Depending on the manufacturer of the element, you will normally read between 19 ohms and 115 ohms

The oven safety valve
(also called the gas valve) is the part that ensures that gas is not released until the igniter has reached the correct temperature needed to ignite the gas. While this part can fail, it is uncommon. If the hot surface igniter does not glow you should first verify that you have voltage to the circuit. This is a live voltage check and should be performed by a qualified person. If voltage is lost at the valve terminals then you should verify the continuity of the bi-metal in the valve using a multi-meter.
Sometimes the oven thermostat or oven sensor can be calibrated wrong, or it may be faulty. If your particular range has an oven that uses an electronic thermostat, and the oven temperature is off by tens of degrees, you probably have to replace it.
On most units that have a mechanical thermostat, you can actually remove the thermostat knob, and adjust the knob to more accurately represent the actual setting of the thermostat. On many models, there's a screw on the back of the knob with a small calibration plate or ring. You can loosen this screw and adjust the calibration plate. Remember to tighten the screw again. If yours isn't adjustable, and the temperature is off by a large amount, you should just replace the thermostat.

Or Oven safety valve needs to be checked with multi meter ohms / voltage

Bad SSR relay. Thermostat is for safety so it tripped first time, however since it's mechanical thermostat( not so accurate ) it didn't tripped on time for next time when it overheat

Replace the oven igniter. They get "weak" over time. Will glow, but not draw enough amperage to allow the gas safety valve to open every time.

The oven safety valve
(also called the gas valve) is the part that ensures that gas is not released until the igniter has reached the correct temperature needed to ignite the gas. While this part can fail, it is uncommon. If the hot surface igniter does not glow you should first verify that you have voltage to the circuit. This is a live voltage check and should be performed by a qualified person. If voltage is lost at the valve terminals then you should verify the continuity of the bi-metal in the valve using a multi-meter.
I offer free advice bcuz God is so good!

Why is the oven temperature incorrect?

The oven temperature control is usually controlled by a thermostat that uses a capillary and liquid filled bulb. When the bulb's liquid gets heated up, it expands and puts pressure on a diaphragm which opens and closes a switch that controls the gas to the burner. Just set the dial to what you need the temperature to be. Over time, it is possible for your thermostat to lose its calibration. Sometimes, the thermostat sensing bulb comes loose from the holder. If it is out of place, the thermostat may be getting faulty readings. If this is the problem, re-aligning the bulb properly will take care of this problem.

Digital display models use a sensor to control temperature. If this is faulty, replace it. Other ovens use a mechanical system to control the temperature.

On many models, you can adjust your oven thermostat using a small screwdriver. The adjusting screw is located on the thermostat valve stem. Remove the knob and you'll see the screw underneath it. You want to turn the oven on and run it through at least two cycles while watching a calibrating thermometer in the oven for high and low temperatures. Adjust the screw as necessary to fine tune the temperature.

Some models don't have an adjustable thermostat, and you will have to replace the thermostat if you want to resolve the problem.
The oven sensor: works with the oven control board to regulate the oven temperature. If there is an oven temperature problem, this sensor might be defective. The sensor can be tested by using an ohm meter. As temperature rises, the resistance measurement also rises. The manufacturer of the oven sensor determines the correct resistance, Oven temperature problems can be caused by other things, but this is one of the common causes.
Beware on some models now most of these ovens they are electronic and they are integrated into the control itself
some different sensor ohm readings at room temp. approx 16 ohms at room temperature and at 350?F it is 29~33 ohms.
Read more:
http://www.justanswer.com/appliance/5xrsf-ge-xl44-gas-oven-oven-ignites-even-when-oven.html#ixzz3YdtiPcn8
The reason for my free advice is GOD is good!

Hi,
This is most likely the main oven heating element that is defective.
They do last between 4 - 8 years before burning out - sometimes longer.
Check your make and model and look online for replacements.
Fitting is fairly straight forward DIY - just pull the fuse for the cooker first, and check it is off before opening up.

The only other fault it can be is the thermostat switch. You should be able to test this with a multi-meter when checking the oven element.

Remove power and observe standard safety precautions before testing.

Most likely the ignitor needs replaced. Checking it with a meter will verify. If it is OPEN then replace the ignitor. IF it SHORTED then the gas safety valve will be bad also.
Eric

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.