The Noritz Tankless Water Heater Error Code 14

If you own a Noritz tankless water heater and see an Error Code 14 on the remote display, STOP and call for service. Do not attempt to make the repair as a DIY project. The code warns the user of an overheating condition at the heat exchanger.

The primary (most common) reason for Error Code 14: Scale build-up.

What causes scale build-up? Water quality. Learn more in this short Tech Tip video.

How to descale your Noritz water heater.

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