If the pilot does not light, the water heater will not heat. If you have an electric water heater, the heating elements inside the tank can break and lead to a loss of hot water. We look at some of the common and easy issues on why your water heater might not be working correctly. This should solve the problem. But something is keeping the hot water from traveling to the faucets or fixtures that don’t work. To troubleshoot why your water heater does not get HOT water: 1. Answered by LCD: If no hot water at any faucet in the house, and hot water pipe coming out top of heater and the overtemp/overpressure valve coming out the top of the tank at the side are too hot to comfortably hold onto indefinitely (at least when hot water is running), then the heater is evidently working. I only have enough room for a 4 gallon heater … There are some more expensive models that use electronic ignition. During the holidays, when there are no domestic workers, there is plenty of hot water; Remedy: Monitor the hot water usage and stop the wastage. 3) WRONG INSTALLATION If that’s the case, you may have to evaluate this water heater… If any of the thermostats stop functioning, you won’t be able to get hot water or the water may start heating to very risky temperatures. In the case of not enough hot water, or hot water that is not hot enough, it may be that you need to replace the heating element on your water heater. Sediment buildup. Adjust it to a higher temperature, but no higher than 120F. If the thermostat is working and the problem can't be found in the line or the boiler, it's time to move on to the circulation pump. A lack of hot water in your house may also be caused by a damaged thermocouple. It can be very annoying to have lukewarm water flowing from your hot water tap, therefore preventing you from conducting your daily routines. You won’t get any hot water if that limit switch is tripped. • There is corrosion in the fittings. Try the following troubleshooting tasks any homeowner can do. The red reset button works for my electric hot water heater but after a few days I have to reset it again. If you have a conventional system and have a problem with your hot water heater not working, then you may need to make sure that there is water in your header tank. If you can get hot water in other places, then your water heater is good. Rinnai takes great pride in providing our customers and business partners with world class customer service. When the pilot light is out or won't stay on, you will not have hot water. However, if the other spots don’t have hot water then you have to troubleshoot the water heater. Remove the upper heating element cover to access the hi-temperature limit switch. Not only are they highly efficient, but they can also save you money by heating water only on-demand. No hot water is one of the most common problems in water heating systems. If the pilot is restricted, try removing it and clearing it with a stiff brush and/or compressed air. Step 4: Circulation Pump. • You get a rotten egg smell in your water. Remove the top service cover to the top element and press the red reset button 3. Turn off the power to the water heater. Turn the power back on to the water heater 5. If you’re getting some hot water, and you can hear the unit heating, check the thermostat set point. Make sure that the shut-off valve, is not closed. Most hot water heaters have two of them. I drained the water heater until it was clear, and I know both heating elements are working. Put the top service cover back on. If you have not hot water then there is a really good chance your water heater has issues. Your water heater is a workhorse appliance that works nearly constantly. 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