Navien NFC-175, Service Manual

Page: 42 / 138

42 NFC Service Manual
Version 1.0
4.9 Accessing Advanced Menu Items
4.9.1 Viewing Service Information
To view service information about the boiler, press the Back button
( ) and the Menu button ( ) simultaneously for 3 seconds,
and then select “1.Service Status Info”.
Rotate the Command dial ( ) to switch between the information
items. Press the Command dial ( ) to select an item and view the
information.
Press the Back button ( ) to return to the previous screen or
menu.
Item Description
1. Elapsed Time After
Install
Elapsed time since installation
2. HEX Overheat - No.
of Times
Number of times the heat exchanger
overheat protection has activated
3. Flame Loss - No. of
Times
Number of times a flame loss/misfire
has occurred
4. 2nd ignition - No.
of Times
Number of second ignition attempts
5. 3rd ignition - No. of
Times
Number of third ignition attempts
6. 4th ignition - No. of
Times
Number of fourth ignition attempts
7. 5 ~10th ignition -
No. of Times
Number of tenth ignition attempts
8. ∆ T Limit - No. of
times
Number of times supply return
temperature limit control has activated.
9. Supply Limit - No.
of times
Number of times Recirculation supply
temperature limit control has activated.
10. ∆ T High - No. of
times
Number of times combustion stopped
due to supply return temperature.
4.8.7 Setting the Display Options
To set the front panel display options, press the Menu button ( ),
and then select “7. Configuration”.
Rotate the Command dial ( ) to switch between the list items or
to increase/decrease setting values. Press the Command dial ( )
to select an item or to confirm after making changes.
Press the Back button ( ) to return to the previous screen or
menu.
Item Description
1. Language
Select a display language.
1. English
2. French
●
Default: English
2. °C/°F Setting
Select a temperature unit.
1. Celsius (°C)
2. Fahrenheit (°F)
●
Default: Fahrenheit (°F)
3. PSI/BAR Setting
Select a water pressure unit.
1. PSI
2. BAR
●
Default : PSI
4. Time Setting
Set the system clock (RTC).
●
Display format: YYYY.MM.DD /
HH:MM:SS
5. Backlight Time
Setting
Set the Backlight On time.
●
Setting range: 0 – 60 sec
●
Default: 2 sec