Navien NPE-240A Service Manual

Version 2.21
116 NPE Service Manual
5.1.24 736Error
Error occurrence conditions and check items
Reconnect cascade wire
Reset the unit
Yes
Is the Ready-Link cascade
cable properly installed
on all units?
NO
5.1.25 782Error
Error occurrence conditions and check items
Reconnect panel to the PCB
1 step: Reset the unit.
2 step: If problem persists,
replace the PCB and Front panel.
Yes
Is the wiring from the
front panel properly
connected to the PCB?
NO

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