Noritz Error 63 — Gas Valve Fault

What Causes Noritz Error 63?

The gas valve is not opening or closing correctly. This can be caused by a defective valve, wiring issue, or PCB fault.

How to Fix Noritz Error 63

Gas valve issues require professional diagnosis. We carry Noritz gas valve assemblies for EZTR and NCC series and can complete most repairs .

When to Call a Professional

Call Simple Water Heater & Filtration if:

• The error code returns after resetting
• You are not comfortable working with gas appliances
• The unit is making unusual sounds alongside the error
• This is the second time you have seen this code in the past year

We are factory-trained on Noritz and provide repair service throughout Los Angeles, the San Fernando Valley, Westside LA, and Ventura County.