Navien NFC-250/175H, Руководство по установке, Страница: 118 / 151

118 Operating the Boiler
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.
Item Description
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
11.6 Accessing Advanced Menu
Items
11.6.1 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.