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About ON Mode
• All functions can be accessed when the remote control
is in the ON mode.
• Only active functions will be displayed when the remote
control is in the ON mode.
Turning On the Heater
• Press the POWER button to turn the heater ON. The
heater will first ignite the pilot. Once the pilot flame is
established the main burner will be lit.
NOTICE: Whenever the heater is cycled from OFF to ON,
the main burner will light on high for 10 seconds before
returning to the previous user setting.
Adjusting Flame Height
• Press the MENU button to activate the menu.
• Using the UP and DOWN arrows highlight the FLAME
icon and press SELECT.
• Use the UP and DOWN arrows to adjust the FLAME
HEIGHT, then press SELECT. The FLAME HEIGHT
can be adjusted to 5 different settings.
NOTICE: FLAME HEIGHT will not be adjustable for first
ten seconds when heater is turned on.
NOTICE: The system will remember the previous FLAME
HEIGHT setting and will automatically adjust after 10
seconds.
NOTICE: Some models use fixed valves, which cannot
be adjusted.
Adjusting Thermostat
(not allowed on vented application installs)
• Press the MENU button to activate the menu.
• Using the UP and DOWN arrows highlight the THERMO
icon and press SELECT.
• Use the UP and DOWN arrows to turn the THERMO ON
or OFF, then press SELECT (the SET TEMP will start
blinking). Using the UP and DOWN arrows select the
desired temperature and press SELECT.
NOTICE: If the THERMO function is on, the SET TEMP
can be adjusted at any time by pressing the UP and DOWN
arrows.
NOTICE: As the ROOM TEMP (RT) approaches SET
TEMP (ST), the remote system will automatically adjust
the flame height. If the RT rises above ST, the heater will
shut down the main burner. After this, the heater will turn
back on after the RT drops below the ST.
NOTICE: The system requires a two degree Fahrenheit
or higher temperature difference between RT and ST for
the heater to turn on.
NOTICE: The system will remember the previous TEM-
PERATURE setting when THERMOSTAT mode is cycled
ON or OFF.
36
Monessen • Mojo Installation/Owner's Manual • 4623-900 Rev. F • 01/23
NOTICE: If your installation includes an optional wired
ON/OFF wall switch, it should be in the OFF position when
using the RC300 in thermostat mode.
Adjusting Timer
• Press the MENU button to activate the menu.
• Using the UP and DOWN arrows highlight the TIMER
icon and press SELECT.
• Use the UP and DOWN arrows to turn the TIMER ON
or OFF, then press SELECT. Using the UP and DOWN
arrows select the desired set time and press SELECT.
Timer operates in increments of 15, 30, 45, 60, 90, 120
and 180 minutes.
Setting the Child Lock
• Press and hold the MENU and UP arrow buttons simul-
taneously for 4 seconds to enable or disable the child
lock feature.
NOTICE: No functions will be usable until child lock feature
is disabled.
Manual Heater Shutoff
In the unlikely event that the remote wall switch malfunc-
tions and will not turn off the heater, call your dealer for
service assistance. In the meantime, you may choose
one of the following actions to turn off the heater:
CAUTION! Risk of burns! Heater surfaces are hot when
operating and during cool down. Use care and wear
gloves when opening the front and accessing compo-
nents inside the heater.
Check remote screen for battery level indicator, replace
the batteries if low battery is indicated (See Figure 9).
The heater may be manually shut down by one of the fol-
lowing methods:
Turn off the control module:
• Move switch to OFF (See Figure 7).
Disconnect power to the control module:
• Unplug the control module and/or remove batteries.
Shut off gas to the control:
• Locate the gas shut-off valve to the left of the gas control.
• Rotate the valve 90 degrees to turn off gas supply.
• To preserve battery life, do not use the HI/LO flame
or THERMOSTAT options.
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