Navien NFC-175, Service Manual

Page: 47 / 138

NFC Service Manual 47 Version 1.0
4.9.6 Diagnosing the Boiler System
To run a series of test procedures for a system diagnosis, press the
Back button ( ) and the Menu button ( ) simultaneously for 3
seconds, and then select “6. Test Mode”.
Rotate the Command dial ( ) to switch between the test
procedures. Press the Command dial ( ) to run a test procedure.
Press the Back button ( ) to return to the previous screen or
menu.
Item Description
1. Fan Motor
Test the fan operation by manually
changing the fan speed.
●
From a stopped state, the fan speed
gradually increases and reaches
the top speed, and then the fan
speed decreases until the fan stops
operating.
●
Rotate the Command dial ( ) to run
or stop the fan test.
2. Boiler Pump
Test the boiler pump operation.
●
The boiler pump is turned on as soon
as you enter the test mode.
●
Press the Command dial ( ) to
toggle the pump operation (On ->
Off / Off -> On).
3. Zone 1 Pump
Test the Zone 1 pump operation.
●
The Zone 1 pump is turned on as
soon as you enter the test mode.
●
Press the Command dial ( ) to
toggle the pump operation (On ->
Off / Off -> On).
4.9.5 Setting the External Connection (for
NaviLink)
To view and configure the external network connection, press the
Back button ( ) and the Menu button ( ) simultaneously for 3
seconds, and then select “5. External Connection”.
Rotate the Command dial ( ) to switch between the parameters
or to increase/decrease setting values. Press the Command dial
( ) to select a parameter or to confirm after making changes.
Press the Back button ( ) to return to the previous screen or
menu.
Item Description
1. NaviLink Connect
Turn on or turn off the remote
control capabilities via the NaviLink
connection.
●
Setting range: On/Off
●
Default: Off