Monessen Hearth DIRECT VENT MLDV500 - Manual (Page 46)

46 75D0004
MLDV Series Gas Fireplace SIGNATURE COMMAND SYSTEM OPERATION INSTRUCTIONS
Fault LED Indication
Conversion Cover Missing One RED (1 time)
Spark Fail Two RED (1 time)
No Sensor Signal Three RED (1 time)
Pilot Lockout - trial One GREEN, every  sec. (until manual reset)
Pilot Lockout - flame loss One RED-GREEN, every  sec. (until manual reset)
Low Battery One RED, every 10s (continuously)
No or Low Thermopile Power Two RED, every 10s (continuously)
Learning GREEN Flashes, every 1 sec. (for 10 sec.)
AC Power On GREEN solid
Pressure Switch Failure One RED every  sec. (until manual reset)
Power Vent Only
FUNCTIONS/OPERATION
Turning on the fireplace
1. Turn on the master switch and wait for a beep.
. Press the ON button on the Command Center or turn on wall switch. Pilot will light and burner will come on High
setting or last memory setting (See Turning Off Fireplace below). For memory feature.
Pilot Safety Lockout Function
1. If the pilot doesn’t light after sparking for 30 seconds, pilot trial lockout happens. The LED on the Command Center
flashes Green once every  seconds, until reset.
. If the pilot flame is lost during normal operation, the system will try three (3) times to relight after three (3) failures,
flame loss lockout happens. The LED on the Command Center flashes Red-Green once every  seconds, until
reset.
3. Turning the master switch on the Command Center to the off position, then ON again will reset the system.
Flame Height Control
1. Press the ON button (on the Command Center) once to turn on the main burner with maximum flame height.
. Press the OFF button to decrease flame height. The first two presses will decrease the flame height to medium and
low.
3. The third press on OFF will turn off the main burner. In standing pilot configuration, the pilot will stay; in intermittent
pilot configuration, the pilot will be shut off.
Turning the Fireplace Off
There are three ways to turn the fireplace off.
1. Flip the master switch to the off (“O”) position. (This will turn the entire system OFF.)
. Press the OFF button to Medium, Low, then Off.
3. Hold the OFF button anytime for three seconds or by turning off the wall switch. These two commands of OFF are
(Memory Off) the system will remember all last settings before turning off. The next time the fireplace is turned on,
all settings will resume. To reset, change to the desired settings and shut off by using the Memory Off commands
and the system will be reset to those new settings.
Command Center Operations:
The following functions are available on the Command Center.
Self Diagnostics Chart:
The Command Center has a self-diagnostic LED enabling you to troubleshoot problems and potentially avoid a ser-
vice call. Please refer to the charts below for indicator reference.
Function Operation
Power Up Flip the master switch to the ON ("_") position to power up the system
Fireplace ON Press the ON ▲ button on the Command Center or turn on wall switch to turn the fireplace on
Fireplace OFF Flip the master switch to the OFF ("o") position OR press the OFF ▼ button 3
times OR for Memory Off, hold the OFF ▼ button 3 seconds, or turn off wall switch
Flame Height Up Press the ON ▲ button once to turn on the fireplace with maximum flame height
Flame Height Down Press the OFF ▼ button to lower the flame height to Medium and Low