Navien NCB-180 Service Manual page 39

Item
1. Normal status
2. Air Purge Control Status
3. Level1 Error occurs
4. Level1 Error displays
36 NCB Service Manual
Description
Normal Operating mode with
power On
Operating mode of Air Purge
Function
Level 1 Error occurrence status
When a level 1 error occurs
Display
When the current supply water temperature is 120℉
and the water pressure is 12.3psi, the image below
repeats at 5 second intervals (Fahrenheit specification)
5 sec flashing
When the supply water temperature is 60.0℃ and its
water pressure is 12.3psi, the image below repeats at 5
seconds intervals. (Celsius specification)
5 sec flashing
When the supply water pressure is 12.3 psi, 'AIR' and
water pressure will repeat to display at 5 seconds
intervals alternately.
5 sec flashing
When the current supply water temperature is 120℉
and its water pressure is 12.3psi, the image below repeats
at 5 seconds intervals. (Celsius specification)
Error icon flashes at 1 second intervals.
5 sec flashing
When the current error is Level 1, the 218 (error code will
display for 5 seconds), Error icon flashes at 1 second
intervals.
1 sec flashing after display of 5sec
Version 1.0