The water temperature in the solar water heater can reach a maximum of 100°C. From the first stages of the design of the solar water heater, the problem of combustion and aging of the components was taken into account. the heaters will not turn off.
However, it is recommended not to maintain high temperatures permanently. If the temperature remains high for too long, it will accelerate the aging of the water tank coating and various accessories. Therefore, it is recommended that when the solar water heater is not used for a long time, the automatic water filling function should be turned off or the water in the solar water heater can be drained.
Will the solar water heater fail if heated overnight without water in winter?
Solar energy certainly won't run out, but you can't be sure that electric heating will. It all depends onand its quality. If it doesn't cause a fire, your house is lucky. accessories from major brand products will be very good. Okay, I don't know what brand you use at home. Leaving the electric heater plugged in for that many days will definitely use up a lot of electricity.
Usually this is not a problem. The resistance of solar electric heating to dry combustion must meet certain standards. The national standard is to achieve dry burning resistance of 48 hours. Some relatively good brands have standards. of your own business could be better. I'm currently using the Huangming one, and they say the dry burning resistance test takes three days and three nights, so there should be no problem in a situation like this in your home.