A water heater that produces no hot water may not be getting power, may have a tripped limit switch, or may have one or more failed heating elements. First, check the water heater’s circuit breaker in the service panel to make sure it hasn’t tripped. If the breaker has tripped, switch it off, then switch it back on.
Also to know is, how can you tell if a heating element is bad?
Touch a probe on the multitester to each screw on the element. If you get no reading, or a maximum reading, the element is bad. Elements do have some resistance, so a reading of 10-16 ohms is normal, with higher ohm readings for 3,500 watt elements and lower readings for 5,500 watt elements.
Then, how do I know if my hot water heater thermostat is bad?
If you turn the hot water tap and cold water runs out, then the upper thermostat is damaged. But if the water is hot that becomes later becomes cold, then you have a damaged lower thermostat.
How do I reset my immersion heater?
An immersion heater may last for between two and three years before it burns out and needs to be changed.
Water leaks are perhaps the most common type of water heater issue you’ll face. Any water heater will start to leak eventually, as by nature water will eventually corrode your tank and create microscopic cracks or fractures.
On a 3KW immersion heaters, the reading should be around 20 ohms. But anything between the 15-25 ohm is normal, meaning everything working properly.
If there is no hot water or the supply is not adequate or is too hot, check the upper thermostat. If the thermostat is busted, it should be replaced. Lack of regular maintenance can cause issues even though the thermostat is working because of sediment buildup. To fix this, flush your water heater.
If you do not have the time, skill or desire to carry out this job yourself, you can always call in an electrically qualified plumber. Changing an immersion heater is one of the few jobs where you may need both an electrician and a plumber, but that’s in very rare cases.
Well, you’re probably wondering why the immersion heater is not working. The straight answer is that the culprit may be anything from a faulty thermostat to damaged elements, and even limescale buildup.