The Front Panel - Navien NFC Series User's Information Manual

2.3 The Front Panel

The front panel allows you to adjust the temperature and view the operating status or error codes. Remove the protective sheet from the front
panel before using it.
2.3.1 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.
Outdoor reset
a
Displayed when the Outdoor Reset
feature is enabled.
System fault
c
Displayed when a system fault is
detected.
Cascade/Main mode
Flashes when configuring a cascade
e
system. Turns on solid if the boiler
is set as the Main unit in a cascade
system.
Space heating demand
g
Indicates the space heating demands
from thermostats 1, 2, and 3.
Space heating set temperature
i
Displays the currently set space
heating temperature.
Outdoor temperature
k
Displays the outdoor temperature.
c
b
a
g
i
k
Combustion
b
Displayed when the burner is combusting.
Anti-freeze
Displayed when the boiler is operating in
anti-freeze mode.
d
Auto air purge
Displayed when an auto air purge is being
performed.
DHW Operation
Displayed when the pre-heating feature is
f
activated.
●
DHW demand
h
Indicates that DHW demand is present.
DHW set temperature
j
Displays the currently set DHW
temperature.
System pressure
l
Displays the internal water pressure of the
boiler system.
d
e
f
h
j
l
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