There are two types of high temperature limit switch water heaters: those that use an immersion thermostat, and those that don’t. Immersion thermostats are more accurate than the non-immersion variety, but they’re also more expensive. If you have a choice, go with the immersion type.
If your water heater is equipped with a high temperature limit switch, it’s there to help prevent the unit from overheating. This switch is usually located near the top of the tank, and if the water inside gets too hot, it will trip the switch and shut off the power to the heater. This is a safety feature that can help protect your home from fire or other damage, so it’s important to know how it works.
If you’re troubleshooting a problem with your water heater, one thing you can check is the high temperature limit switch. If this switch has been tripped, it will need to be reset before the power can be turned back on to the unit. To do this, simply locate the switch and flip it back to the “on” position.
Once that’s done, your water heater should be up and running again.
If you find that your high temperature limit switch trips frequently, there may be an issue with your water heater itself. It’s possible that the thermostat is set too high or that there’s something else going on that causes the unit to overheat.
In either case, it’s best to call a professional for help diagnosing and fixing the problem.
AO Smith Water Heater Thermal High Temperature Limit Switch | How to Reset and Relight Pilot
What Does a High Limit Switch Do on a Hot Water Heater?
A high limit switch is a safety device that is installed on hot water heaters. Its purpose is to shut off the power to the heater if the water temperature gets too high. This can prevent the water from boiling and causing serious damage to the heater or injuring someone who comes into contact with it.
What Causes Water Heater High Limit Switch Keeps Tripping?
There are several possible causes for a water heater high limit switch to trip. The most common cause is simply a build-up of sediment in the tank. As water heats, it naturally breaks down into minerals which settle at the bottom of the tank.
Over time, this can form a hard crust that prevents heat from escaping properly and eventually trips the high limit switch. Other potential causes include a faulty heating element or thermostat, or even an excessively high water temperature. If you’re not sure what’s causing your high limit switch to trip, it’s always best to call a professional plumber for help.
How Do You Reset a High Limit Switch on a Water Heater?
If your water heater’s high limit switch is tripped, you’ll need to reset it before the heater will work again. The high limit switch is a safety device that shuts off power to the heating elements if the water temperature gets too high.
To reset the high limit switch, first make sure that the water in the tank is cool enough to touch.
Then, locate the switch on the side of the tank and flip it to the “reset” position. You should hear a clicking sound as the switch trips back into place. If there’s no clicking sound, or if flipping the switch doesn’t seem to do anything, you may need to replace the switch altogether.
Once you’ve reset the high limit switch, turn on power to the water heater and wait for it to heat up. If everything is working properly, you should have hot water again in no time!
Where is the High Limit Switch on a Hot Water Heater?
The high limit switch on a hot water heater is located near the top of the tank. It is usually mounted on the side of the tank and is connected to the thermostat. The purpose of the high limit switch is to shut off the power to the heating element when the water temperature in the tank reaches a predetermined level.
This prevents the water from overheating and damaging the tank or causing an explosion.
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Gas Water Heater High Temperature Limit Switch
Most homes have a natural gas water heater. These rely on a pilot light to ignite the burner when water is needed. The high temperature limit switch is a safety device that is there to turn the burner off if the water in the tank gets too hot.
This can happen if the pilot light goes out and isn’t relit, or if there is a problem with the thermostat.
If your gas water heater’s high temperature limit switch trips, you’ll need to reset it before your water heater will work again. To do this, simply press the reset button on the switch.
If it trips again, there may be a problem with your water heater and you should call a qualified technician to take a look at it.
Keep Having to Reset Water Heater
If you have an electric water heater, there are a few things that can cause it to trip the reset button. The most common reason is simply because the water heater is getting too hot. This could be because the thermostat is set too high, or there could be something wrong with the heating element.
Either way, you’ll need to reset the button every time it trips in order to keep using your water heater.
Another common reason for the reset button to trip is because of a power surge. If there’s been a power outage in your area, or even just a brief moment where the power dips, it can cause your water heater to trip its reset button.
In this case, you’ll just need to wait for the power to come back on and then hit the reset button.
If your water heater keeps tripping its reset button, it’s best to call a plumber or an electrician to take a look at it. There could be something wrong with the wiring that’s causing it to overheat, or there may be another issue entirely.
Either way, don’t ignore this problem since it could lead to much bigger issues down the road!
Why Does My Electric Water Heater Keep Turning off
If you have an electric water heater, you may have noticed that it occasionally turns itself off. This is usually due to a safety feature that is built into the heater. The purpose of this feature is to prevent the water heater from overheating and causing damage to your home or injuring someone.
There are a few reasons why your water heater might be turning itself off. One possibility is that the thermostat is set too low. The thermostat controls the temperature of the water in the tank, and if it is set too low, the water will not get hot enough to trigger the safety feature.
Another possibility is that there is something wrong with the heating element itself. If the element is not working properly, it will not heat the water sufficiently and will cause the safety feature to turn off the heater.
If your water heater keeps turning itself off, you should check both the thermostat and heating element to see if they are working properly.
If either one of them needs to be replaced, you should contact a qualified technician to do so. In most cases, however, simply resetting the thermostat to a higher temperature will fix the problem.
Conclusion
If your water heater is cycling on and off or if the water temperature is not as hot as it should be, it could be because of a problem with the high temperature limit switch. This switch is responsible for turning the heating element off when the water temperature gets too high. If it is not working properly, it can cause the water heater to overheat and shut down.
In this blog post, we will show you how to test and replace a faulty high temperature limit switch.