Navien NPE-240A Service Manual

Version 2.21
62 NPE Service Manual
4.11.5 Flame Rod Assembly
Part Check Point
Function To ignite gas by repeatedly discharging a high voltage spark to the main burner until gas ignites.
Failure Event
1. Unable to ignite during the ignition process.
2. Produces multiple unsuccessful attempts to ignite.
Effects
1. The unit cannot ignite during the ignition process and “E003” or “E004” error codes will display.
2. Durability of the igniter wears down
Error Code E003, E004, E012
Diagnostic Visual inspection: Connection and/or breakage of wires.
Color/Number
of wires
BLACK: 0~10 uA
Bracket
Flame rod
Igniter
Gap distance : 3.5~4.5mm (1/8”)

Navien NPE-240A Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Energy Factor	0.97
Energy Efficiency	97%
Voltage	120V
Ignition Type	Electronic
Maximum Input	199, 900 BTU/h
Water Connection Size	3/4"
Gas Connection Size	3/4"
Warranty	15-year on heat exchangers, 5-year on parts, 1-year on labor
Dimensions	17.3" W x 13.2" D x 27.4" H