Don’t Panic! All You Need to Know About Fixing Your Tankless Water Heater Issues

Having a reliable hot water supply in your home is undoubtedly a necessity. Tankless water heaters provide an energy-efficient and compact option compared to conventional water heaters. They offer a consistent hot water supply, are cost-efficient, and take up less space. But, just like any appliance, tankless water heaters can encounter issues. This blog will discuss some common tankless water heater repair issues and help you figure out how to solve them.

  1. Lack of hot water

You turn on the hot water faucet, only to find out that there’s no hot water coming out. Don’t panic! This is usually a minor issue and can be resolved by checking the water filter. A clogged water filter can limit the water flow, decreasing hot water. Turn off the power to the heater and turn off the water supply. Locate and clean the water filter to remove any dirt and debris causing the blockage. Turn the water supply back on and flush out the tankless heater before turning the power back on.

  1. Water temperature fluctuations

If the hot water from the faucet fluctuates between hot and cold, it can be due to a dirty water inlet filter, a malfunctioning thermostat, or a damaged heating element. Start by turning off the unit and accessing the inlet filter. Clean it if it is dirty. If the problem remains, it may be due to a faulty thermostat or heating element requiring professional assistance.

  1. Ignition failure

If the heater does not ignite when turned on, check the gas supply and ensure the unit receives gas. A defective thermocouple can also cause ignition issues. You can replace a thermocouple yourself if you have the right tools. If the problem persists, the gas valve or control board may be the root cause, and it’s best to call a professional.

  1. Strange noises

Tankless water heaters tend to make rattling and popping sounds, which is normal. However, hearing louder banging or whining noises may indicate issues with the heating elements or the water flow. Unusual noises require professional assistance to avoid further damage.

  1. Error codes

Tankless heaters often display error codes on the digital control panel, indicating a problem or issue. The error codes vary by manufacturer, so refer to your owner’s manual for specific guidelines. A common error code is “LC” or “Flashing LC,” which indicates a lime scale buildup, requiring a descaling process.

Tankless water heaters are an efficient and eco-friendly solution for supplying hot water in your home. However, they can have issues, just like any other appliance. Understanding how your tankless water heater works and the various troubleshooting techniques can help you fix many minor issues. If you need any help, don’t hesitate to ask for the help of a licensed and experienced plumber!