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Most Comprehensive Navien Error Code Resource

Navien Boiler Error Codes

Complete error code guide for all Navien boiler models including NPE, NHB, and NCB series. Find detailed explanations, safety guidance, and emergency repair services across Greater Vancouver.

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Navien Error Codes by Category

Ignition & Flame Errors
Error codes E003, E004, E005, E012 - Ignition failure, flame loss, and flame sensing issues
Water Pressure Faults
Error codes E002, E008 - Low water pressure and water flow issues
Venting & Exhaust
Error codes E014, E015, E016 - Air pressure switch and exhaust system faults
Communication & Control
Error codes E030, E031, E110 - PCB communication and electrical faults

Most Common Navien Error Codes

E003Ignition Failure
Boiler fails to ignite or light
E004False Flame
Flame detected when no gas valve signal
E005Flame Loss
Flame lost during operation
E002Low Water Pressure
System pressure below 0.3 bar
E012Flame Rod Fault
Flame sensing rod malfunction
E008No Water Flow
Water flow not detected
E014Air Pressure Switch Error
APS failure or venting issue
E110Overheating Protection
Temperature limit exceeded

Navien Boiler Models

NPE Series
Condensing tankless water heaters and combi boilers
NHB Series
Condensing boilers for hydronic heating
NCB Series
Condensing combi-boilers for heating and hot water

About Navien Boilers

Navien is one of the most popular boiler brands in Greater Vancouver, known for their high-efficiency condensing technology and reliable performance. Navien boilers feature advanced diagnostics that display specific error codes to help identify issues quickly.

Understanding Navien Error Codes

When your Navien boiler encounters a problem, it will display an error code on the control panel. These codes typically start with "E" followed by numbers (e.g., E003, E005). Some errors are safety lockouts that require professional repair, while others may be resolved with simple troubleshooting.

When to Call for Emergency Service

If your Navien boiler shows ignition failure codes (E003, E005), venting errors (E014-E016), or has locked out leaving you with no heat, call ROMA Heating & Cooling immediately. We offer same-day emergency service throughout Vancouver, Burnaby, Richmond, Surrey, and all of Greater Vancouver.

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