The Front Panel; Icons And Digital Display - Navien NCB-150E Service Manual

4.4 The Front Panel

The front panel allows you to adjust the water temperature and
view the operating status or error codes. Remove the protective
sheet from the front panel before using it.

4.4.1 Icons and Digital Display

The icons and digital display on the front panel provide important
information required for the boiler's operation. Refer to the
following table for detailed information.
a
Space heating mode
Indicates space heating mode operation.
b
Error
A code will appear on the display.
c
Combusting
Indicates burner operation.
d
DHW mode
Indicates DHW mode operation.
e
Digital Display
32 NCB-E Service Manual
b
a
f
S R O/R psi
g
h
MODE
CONDENSING COMBI BOILER NCB
f
S
Supply water control
Indicates supply water control status.
g
R
Return water control
Indicates return water control status.
h
O/R
Outdoor Reset
Indicates outdoor reset operation.
i
GPM
Indicates water flow.
j
psi
Psi
Indicates water pressure.
c
d
e
i
j
Version 1.4