Displaying And Resetting Errors; Adjusting The Space Heating Temperature Set Point - Navien NCB-24LSWE Service Manual

4.4.5 Displaying and resetting errors

1. When an error higher than Level 2 occurs, the Boiler
may stop operating or have only basic functions. The
boiler will enter <Error display mode> directly from
<Normal operation mode> or <Power off mode>.
2. When an error occurs in other modes, only the Error
icon flashes. The boiler enters <Error display mode>
after closing the current mode.
3. The Error icon and error code flash alternately at 1
second intervals in <Error display mode>.
4. The error code consists of 3 digits.
5. Service information, error history, and special
parameter modes are available from <Error display
mode>.
6. Press the [Reset] button while the error code is
displayed and 'RST' is displayed for 3 seconds. If the
boiler's status meet predefined conditions, the error is
released. If the error cannot be released, the error
code will be redisplayed every 3 seconds.
7. If an error occurs in power off, test, or parameter
setting modes and if the error is released by pressing
the [Reset] button or it is automatically released in
<Error display mode>, the Boiler returns to <Power off
mode>.
Display
Displayed alternately every 1 sec
Version 1.0
4.4.6 Adjusting the Space Heating
Temperature set point
To adjust the heating temperature set point:
1. Press the Space heating button. The space heating
temperature will flash.
2. Press the + (Up) or – (Down) buttons until the desired
temperature appears on the display.
NCB Service Manual 35