Navien NCB-180, Service Manual

Page: 58 / 149

4.4.12 Resetting the Boiler (Factory Reset)
If an error message appears, you can try resetting the boiler to
resolve the problem. To reset the boiler, press the Reset
button.
If resetting the boiler does not solve the problem, refer to the
Troubleshooting section of this manual or contact Technical
Support at 1-800-519-8794.
1. Pressing the [Diag[Plus]+[Reset]+[Power] buttons
at <Power Off mode> for more than 5 seconds will
initialize the system to its factory reset and the system will
convert its mode to <Normal Operating mode> after
displaying ‘INIT’ on Segments for 5 seconds.
2. Reset Value:
3. For Fahrenheit (
℉
): Supply water temperature is to be set
at 140
℉
, Return water temperature is to be set at 120
℉
and Temperature of hot water is to be set at 120
℉
.
4. For Celsius (
℃
): Supply water temperature is to be set at
60
℃
, Return water temperature is to be set at 50
℃
and
hot water temperature is to be set at 50
℃
.
Command Description Display
FACTORY
RESET
Displays for
5 seconds
4.5 Version Display
Press the [Diagnostic] button for more than 10 seconds at
<Power Off mode> will display the Main Controller firmware
version for 3 seconds, display the Panel firmware version for 3
seconds and return the system to <Power Off mode>.
Item Description Display
(a) Main
Controller
F/W Version
Displays for
3 seconds
Ex > Ver 1.2
(b) Panel F/W
Version
Displays for
3 seconds
Ex > Ver 2.3
4.6 Error Codes
Item Error Code Conditions
(a) Panel
Communicati
on Error
E782
(Level 1)
Automatically releases
the error code when the
main controller doesn’t
answer for 60 seconds
but the system operates
normal communications
once.
The error code will be
displayed first on the
Panel Controller
regardless of error level
when a Panel
Communications Error
occurs (as it is not
possible to know the
Controller error status if
communication with the
Controller is not
available)
(b) Key Error
E593
(Level 1)
A Key Error occurs when
Touch IC IIC
Communication is not
available for more than
1 minute and will be
automatically released
when normal operating
conditions are met.