Inside you will see a red reset button push it to reset the thermostat. Water Heaters - Keeps tripping the reset button. There are two thermostats for a water heater. Should I replace the lower thermostat and see what happens. Last year around this time it did the same thing but all of a sudden quit until now. When this happens try to notice if the water gets extremely hot right before it goes out. However, if the reset button on your water heater keeps tripping and is always needing to be reset, then there could be a problem and it’s best to call a plumber. 2 years later, it's starting all over. Water heaters have a limit switch that keeps the water from exceeding 180°. The thermal switch keeps blowing. I adjusted the upper water temp control, but didn't do the bottom at first. - My water heater keeps tripping the reset button after heating up. The water inside the tank may become dangerously hot for many reasons, but most often, a failed component is to blame. In other words, water that is too hot will cause your water heater’s reset button to trip. The most likely cause of the limit switch tripping is a bad thermostat. 1) A faulty water heater thermostat. When the water reaches 180° the limit switch (a little red reset button on the water heater) trips. When a water heater starts tripping the ECO repeatedly, it’s time to call a plumber for service. I would reset it and 6 or 7 hour later it would trip again. The reset button is located on top of the emergency cut off (ECO). I replaced the upper thermostat with the reset. I am thinking that it could be that the water temp is set too high. The first time it happens remove the top panel on the water heater. Gas water heater thermal limit keeps tripping. Uhhh. To reset it, you’ll need to press the red reset button on the ECO, which is usually attached to the upper thermostat. The top one has a reset button and about every 2 days it keeps tripping, usually at night because I will get up for work and the water will be cold. It … I have to keep the water temp on LOW in order for the switch not to trip. I have a hot water heater that we have to reset the red button every other day. We at Agape Air Conditioning, Heating, and Plumbing would like to take an opportunity to list a few of the common reasons as to why the water is continually tripping. After3 visits from warranty repairman, they gave us a new water heater due to the "lemon law". The high limit switch keeps tripping on my hot water heater. If you do this and the button keeps tripping there is a problem with the thermostat and it should be replaced. This helps protect you from getting burned or scalded by the excessively hot water. K ... (I'm looking at the paint daub, not the colour of the plastic button, which are all red.) Jump to Latest Follow 1 - 15 of 15 Posts. I Bought an American Standard Water heater and within 3 months the thermal fuse kept blowing. Hi, my hot water heater is only 3 years old and it has dual heating elements and sensors. I take off the cover and remove the insulation to click the reset button and it is good for another 2 days. The recommended temperature setting of any water heater is 120 degrees Fahrenheit. The ECO switch is a failsafe component that automatically shuts down the water heater when it overheats the water. What Causes the Reset Button on a Gas Water Heater to Trip? It could be alarming to think that the water in your heater is dangerously hot! If your water heater is tripping the ECO repeatedly, there is likely a problem with the system that needs to be repaired immediately. The problem is, the service manual says that there should be a yellow switch installed with a 270 degree rating. My water heater is 3 years old. The water heater went longer without needing to be reset… And when you have to reset the heater, it’s time to … I replaced it and it is doing the same thing.