Monessen Hearth NB18 Installation And Operating Instructions Manual page 45

NB18/NB24 Gas Log Set
SIGNATURE COMMAND SYSTEM
OPERATION
Install batteries and/or
plug in the AC board
Flip the master switch
(rocker switch) to the
ON position
Press the ON button on
the Command Center
Monessen • NB18/24 Gas Log Set Installation/Owner's Manual • 81D0107 • Rev I • 01/19
FAULT
Make sure
Command
Center and
A
No beep in about
the control
8 seconds
board are
connected by
a 2 feet or 15
feet cable
No beep
or B
Check valve
no sound from the
connections
valve indicating pilot
solenoid open
C
No sparking on Check pilot
the pilot connections
D
Check gas supply
Pilot doesn't light
E
Main burner doesn't
Go through
light
LG1042
troubleshoot sc
DIAGNOSIS
Using
Battery polarity wrong?
battery?
Battery voltage low?
Check power
supply (go
through )
A
Check Go through
grounding
B
Go through C
The sensor on the pilot
D
is not in the flame
(pilot flame too small)?
TROUBLESHOOTING
ACTION
Re-install batteries
Change batteries
Replace the Control
Board or
Command Center
Sparking is happening
elsewhere (under the
pilot), re-install/replace
the pilot
Sparking is not in the
path of gas flow, adjust
sparker position or
replace the pilot
Adjust sensor position
or replace the pilot
45