Why is the lower tube of the oven not red but hot to the hand

Why is the lower tube of the oven not red but hot?
This situation may be caused by three reasons, as follows:
① The fuse of the oven has blown, in which case people can replace the fuse themselves or find someone to replace it.
② I forgot to turn on the tube in the oven. If people turn on the oven and only turn on the upper tube without turning on the lower tube, the lower tube will also not be red and hot. People just need to turn on the switch for the lower tube.
③ The heater of the oven has malfunctioned, people should find someone to repair it.
Why doesn't the oven touch screen work?
If the current of the oven exceeds the rated current during use, causing the air switch to trip, and the air switch is not turned on when the oven is used again, then the touch screen of the oven cannot be used. People can reset the air switch.
If people don't turn on the power switch, then the touch screen naturally won't work. Just turn on the power switch.
What should I do if the oven leaks electricity?
If people find that their oven has dew points, they should immediately disconnect the power supply to the electric oven. Afterwards, check if the power supply ground wire of the oven is broken, and if so, find an electrician to come and repair it. If it's not a problem with the ground wire, it means there's something wrong with the oven and people need to find a professional repairman to come and repair it.
What should I do if there is a strange smell in the oven?
When people feel that their ovens have a strange odor, they first check if there is any residual food inside, or if they did not clean the inside of the oven after using it last time, causing the food inside to smell. If it is not an internal issue with the oven, it should be checked if the food near the oven emits a foul odor.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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