Navien Water Heater Error Code 11: How to Fix It

Q: What causes Navien error code 11 ignition failure?

Common causes include insufficient gas supply, dirty or faulty igniter, blocked venting, loose electrical connections, or problems with the gas valve or control board.

Q: Can I fix Navien error code 11 myself?

Basic troubleshooting like checking gas supply, cleaning the igniter, and clearing vents can be done by homeowners. However, gas pressure testing and igniter replacement should be done by licensed professionals.

Q: How much does it cost to fix Navien error code 11?

Simple fixes like cleaning or clearing blockages cost nothing. Professional service calls typically range from $150-300. Igniter replacement can cost $200-400 including parts and labor.

Q: Why does my Navien keep showing error code 11?

Recurring error 11 often indicates a failing igniter, chronic venting issues, inconsistent gas pressure, or a faulty gas valve. Professional diagnosis is recommended for persistent ignition failures.

Q: Is Navien error code 11 dangerous?

Error 11 itself isn't immediately dangerous as it prevents ignition when unsafe conditions exist. However, the underlying causes like gas leaks or venting problems can be hazardous and require prompt attention.

Abstract

Navien error code 11 indicates an ignition failure, meaning your water heater cannot successfully light the gas burner. This critical error prevents hot water production and typically involves issues with gas supply, the igniter assembly, or venting problems.