You only have to drain the unit to a point below the element, but it is a good idea to completely flush the tank anytime you are making repairs. Connect a garden hose to the drain at the bottom of the tank and open the drain valve.
Shut off the cold water inlet valve, located on top of the tank. If you are not sure your electric water heater is off, use a multimeter to test the wiring before you begin. Electric units can be shut off at the circuit breaker, while gas models will have a knob or dial. For that, you will want to know which heater brand offers the best service including a warranty or go straight to my top recommendations.You should always turn off the power when working on a water heater. If it’s older then it’s time to switch to more efficient tankless water heaters. How old is your water heater anyway? It can last a max of 12 years. If it didn’t work then call the electrician. So I hope this 5-step guide to troubleshooting the water heater not heating after replacing the elements and thermostat was helpful to you and hope you could finally get hot water. In case you plan to switch over to a tankless water heater then you will want to go through this guide for expected expenses and if this will even be worth it. Have you noticed your other electric appliance like the dryer, and electric oven not working? These are telltale signs of a feed problem. Otherwise, there’s a voltage drop at the feed of your home and you should call an electrician. Is it 240 volts? If it is then the feed is good. Get your multimeter, set it to voltage, and check the supply at the element. If you aren’t comfortable with that then I advise calling the electrician and letting him do the job.Īll right. Performing this test requires dealing with 240volts. If you performed all the steps above but still had no results then chances are the problem is with the main supply. Perform a similar step for the second element. If it’s between 10-12 ohms then the element is working if it’s infinite or very low then it’s defective. Disconnect the wires connected upper element and touch the probes of the multimeter to each screw of the element. Set the multimeter to the lowest reading of ohms. Open those access panels of the water heater. But how would you know that? You will need to test the element and thermostat.įor this step, you will need a multimeter and a screwdriver which you already have since you just replaced parts. There’s a chance that one of the parts itself is bad. But that doesn’t 100% guarantee that it’s working. So okay you bought a brand new thermostat and element. Test the continuity of the heating element and thermostat Shut off the supply from the breaker panel and then check the wires and connections. I remember one such incident where everything was correct but the slightly damaged wire going to the unit dropped voltage which kept water from heating.īut before you perform this step. Maybe there’s a loose connection here or there or a broken wire. And also that you installed relevant and suitable elements and thermostat. I hope you did the connections exactly in the manner that it previously was. Once you descale, it’s likely that the unit will heat up water.ĭescaled recently but still has no luck. This guide to the descaling water heater will come in handy for you. If you haven’t done it for years then maybe it’s time now.
You should flush your tank and descale it at least once a year. Scale build can cause a variety of problems with your water heater and I have seen that a lot in my 10+ years of plumbing career.Īnd electric water heaters accumulate scales faster than gas-fired units. When was the last time you flushed your water heater? Can you recall it? I know I talk about flushing water heaters in every other troubleshooting guide of mine but that’s for a reason. If the breaker is not tripped then move on to the next step which is 2. If it trips again then there’s something short circuit in the water heater and you should call the electrician for investigation. Why it tripped is the case for investigation but for now, pull up the breaker and your problem should be solved. Is it tripped or down? If yes then maybe that’s the cause of all this mess up. There should be a double pole breaker labeled for the water heater. Go ahead and open the breaker box of your home.
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