Error Display And Reset; Adjusting The Space Heating Temperature - Navien NCB-150E Service Manual

4.4.5 Error Display and RESET

1. When an error higher than Level 2 occurs (the Boiler may stop
operation or only has basic functions), the Boiler enters <Error
Display mode> directly at <Normal Operating mode> or
<Power Off mode>.
2. When an error occurs at other panel modes, only the Error icon
flashes and it enters <Error Display mode> after terminating
the current mode.
3. The Error icon and error code flash alternately at 1 second
intervals at <Error Display mode>.
4. The error code displays 3 digits.
5. Entering Service Info, Error History or Special Parameter mode
is available at <Error Display mode>.
6. When pressing the [Reset] button once while the error code
is displayed, the error will be released after 'RST' displays for 3
seconds if the Boiler meets the conditions to release the error.
If releasing the error is not possible, the error code will display
again after 3 seconds.
7. When releasing the error by pressing the [Reset] button once
or it is automatically released at <Error Display mode>, the
Boiler returns to <Power Off mode> after releasing the error,
if the error occurred in a specific mode (Power OFF, Test, or
Parameter Setting mode) .
Item Description
4.4.6 Adjusting the Space Heating
Temperature
The boiler is set to 140°F (60°C) by default. To adjust the space
heating water temperature:
1. Press the Mode button once. The space heating icon turns on.
2. Press the + (Up) or – (Down) buttons until the desired
Display
1 sec flashing
MODE
temperature appears on the display.
MODE
System Details 37