What does the red light on a water heater mean?

shutting down
A solid red status light means the water heater is shutting down. Turn the gas control valve OFF and wait 10 minutes before attempting to relight the pilot. The status light will flash more than once every 3 seconds if an error is detected.

What is the code for a Noritz tankless water heater?

NORITZ NRC663-FSV TANKLESS WATER HEATER MANUAL Model (EZTR40) [PDF] (2014) sold by Home Depot & other suppliers. A reader opined that for some models this code means Noritz manifold replacement is needed. See Error Code 59 as well – above on this page. On 2021-01-31 by (mod) – Noritz 57 error code ?

What’s the error code on the Noritz cb180?

See the water heater manual or troubleshooting manual for your specific water heater model for expanded detail about the meaning and the corrective steps for each of these error codes. Image: the Noritz CB180 combination boiler, whole house dmoestic water heater, 18,000 to 180,000 BTUh and 0.5 to 9.1 GPM.

What is the thermal fuse on a Noritz water heater?

The thermal fuse is a white cord which wraps around the heat exchanger. Check for obstructed combustion air flow, clean proper burner operation. Check water quality for hardness or sediment that can clog the heat exchanger. Flush scaled heat exchanger.

What kind of gas does a Noritz heater use?

Noritz heaters are available in models for either natural gas or propane. We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need.

Why is my Noritz tankless water heater not working?

Installer Matt Carver stands next to the EZTR40 water heater. 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 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 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.

Can a Noritz water heater be used in a manufactured home?

Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifications of its products without notice. FOR USE IN RESIDENTIAL OR MANUFACTURED HOME APPLICATIONS. *SBB8065* Low NOx Approved by SCAQMD 14 ng/J or 20 ppm (Natural Gas Only) Prohibited Don’t touch.