Setting The Front Panel Lock Mode - Navien NCB-24LDWE User's Information Manual

3.6 Setting the Front Panel Lock Mode

The front panel lock mode is used to disable all control panel
buttons to prevent unauthorized boiler operation.
Locking the Front Panel
Press and hold the + (Up) and – (Down) buttons at the same
time for 5 seconds.
"Lock" is displayed for 2 second.
Display Description
Disables all control panel
buttons.
Unlocking the Front Panel
Press and hold the + (Up) and – (Down) buttons at the same
time for 5 seconds.
"UNLO" is displayed for 2 seconds.
Display
If the boiler's electrical power supply is disconnected,
Note
the front panel lock mode will be cleared.
Description
Enables all control panel
buttons.
Operating the Boiler 13