Noritz Error 70 — PCB (Control Board) Fault

What Causes Noritz Error 70?

The main control board has detected a fault or has failed. This can cause a wide range of symptoms and is diagnosed by ruling out other causes first.

How to Fix Noritz Error 70

PCB replacement is a professional repair. We diagnose all Noritz control board issues throughout Los Angeles — call us for service.

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.