Noritz Error 11 — No Ignition / Ignition Failure

What Causes Noritz Error 11?

The burner failed to ignite. Common causes in Los Angeles: gas supply issue, dirty igniter electrode, failed PCB (control board), or inadequate gas pressure.

How to Fix Noritz Error 11

Check gas supply. If other appliances work, call us for Noritz diagnosis. Code 11 is typically a repair — we carry igniter components for all major Noritz models.

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.