Burner - Navien NHB-055 Service Manual

4.9.9 Burner

Part
Function
Failure Event
Effects
Error Code
Diagnostic
Version 1.0
1. Pre-Mix system reduces emissions and increase efficiency.
2. The burner facilitates the air/gas mixture necessary to produce the proper heat during
combustion.
1. Unable to initialize/sustain combustion.
2. Dust or soot deposit on the burner surface
3. Possible gas leakage from burners.
1. Abnormal combustion.
2. Unstable flame conditions and/or flame loss.
3. Ignition failure.
E003, E004, E012
Visual inspection: Excessive deposits on the burner surface and/or unstable flame conditions
during operation.
Fuel Gas Supply
Check Point
Burner Body
(Fuel Gas +
Combustion Air Mix Zone)
Combustion Air Supply
NHB Service Manual 73