How do I fix Noritz Error Code 66?

Error Code 66

1. Obstructions: Check for any blockage in the valve.
2. Renew: Replace the valve if needed.

How to troubleshoot a Noritz tankless water heater?

Troubleshooting Noritz tankless water heater error codes isn’t as difficult as it may seem. Noritz, like any other tankless water heater manufacturer, uses a remote controller which can display various error codes on its LCD display to help with troubleshooting. Need to hire a plumber?

What does an error code on a Noritz water heater mean?

If the error code still shows up, call a licensed service tech. What it Means: Gas combustion abnormality. How to Fix: Check airflow obstruction and improper gas burning. Confirm correct air/fuel mixture and gas pressure. Once fixed, reset the unit by unplugging for 30 seconds. What it Means: Neutralizer is at the end of its life cycle.

What causes a code 16 on a Noritz tank?

A sharp spike in outlet water temperature will cause a code 16. This often results from scale buildup, which hampers heat-transfer efficiency and makes the unit try to compensate by burning hotter. Since this error can be caused by scale buildup or hard water, performing a descaling procedure or using a water softener may resolve it.

What to do when you get a Noritz error code 11?

Action: If the water heating system has the recirculation, try to keep the temperature with the difference of 10 degrees. If the combustion continues, check if there is any foreign body, such as oil/grease on the burner. To reset the code, turn the unit off and on. Problem: The error code 11 is related to ignition failure.

Are there any problems with the Noritz water heater?

Problems such as no hot water, not enough hot water, flame loss, water too hot or cold, temperature fluctuation, are just some of the issues that will be identified through the error codes. Before attempting to solve the problem, it will be assumed that the Noritz model was installed properly, per codes and manufacturer instructions.

Why does my Noritz hot water heater shut off in middle of shower?

I built a new home in 2007 and installed a Noritz tankless hot water heater. It now shuts off in the middle of a shower and the water is cold. The plumber told me to get out of the shower and hit the on/off button and wait for it to heat up again. However, the remote unit is in the master bath.

What does code 11 mean on a Noritz water heater?

Noritz Error Code 11 This indicates ignition failure in your tankless water heater. It means that your unit is not firing up to heat the water, a situation that can be caused by insufficient gas supply, insufficient airflow or debris on the ignition plug.

What does it mean when heat exchanger fails on Noritz tankless?

Check that the flame rod/sensor is not covered by debris. Clean or replace if necessary. What it Means: The thermal fuse has failed. How to Fix: Replace the thermal fuse. Confirm that the unit has no airflow restrictions and gas has proper combustion. Check water quality as hard water or sediment can cause the heat exchanger to get clogged.