Mars PS-121B User manual

517.787.2100 • www.marsdelivers.com • www.heatcontroller.com
Remote Control Manual
REMOTE CONTROL GUIDE
Portable Room Air Conditioner
Remote Control for:
PS-121B
PSH-141A
French version of this manual is available on our website
Heat Controller • 1900 Wellworth Ave. • Jackson, MI 49203 • [phone] • www.heatcontroller.com

Remote Control Manual - PS-121B / PSH-141A
Handling the remote controller ........................................................................................................ 2
Remote controller specications...................................................................................................... 3
Indicators on LCD............................................................................................................................ 4
How to use the buttons.................................................................................................................... 5
Auto operation ................................................................................................................................. 5
Cooling/Heating/Fan operation........................................................................................................ 5
Dehumidifying operation.................................................................................................................. 6
Timer operation ............................................................................................................................... 7
ECONOMY operation .................................................................................................................... 10
Important NOTES.......................................................................................................................... 11
Warranty ........................................................................................................................................ 12
TABLE OF CONTENTS
KEEP THIS INFORMATION AS A RECORD OF YOUR PURCHASE
PRODUCT IDENTIFICATION INSTALLATION
Model Number Installer Name
Serial Number Phone Number/Contact Information
Date of Purchase Date Installation Completed
o Component of new HVAC system o Replacement only
Remember to retain your bill of sale as proof of warranty period.
If you should ever have a warranty claim, you will need the model number, serial
number and dated receipt as proof of purchase.

Remote Control Manual - PS-121B / PSH-141A
2
USING THE REMOTE CONTROLLER
REPLACING THE BATTERIES
Location of the remote controller.
Use the remote controller within a distance
of 25 feet (8 meters) from the unit, pointing it
towards the receiver. Reception is conrmed by
a beep.
• The unit will not operate if curtains, doors or other materials block the signals from the
remote controller to the indoor unit. Prevent any liquid from spilling onto the remote
controller. Do not expose the remote controller to direct sunlight or heat.
• If the infrared signal receiver on the unit is exposed to direct sunlight, the air conditioner
may not function properly. Use curtains to prevent the sunlight from falling on the
receiver.
• If other electrical appliances react to the remote controller, either move these appliances
or consult your local dealer.
The remote controller is powered by two batteries (R03/
LR03X2) housed in a compartment on the back of the unit
and protected by a cover.
(1) Remove the cover by pressing and sliding off.
(2) Remove the old batteries and insert the new batteries,
placing the(+) and (-) ends correctly.
(3) Reattach the cover by sliding it back into position.
NOTE: When the batteries are removed, the remote
controller erases all programming.
After new batteries are inserted, the remote controller
must be reprogrammed.
CAUTION

Remote Control Manual - PS-121B / PSH-141A
3
PERFORMANCE FEATURE
1. Operating Mode: AUTO, COOL, DRY, HEAT (PSH-141 model only), and FAN.
2. Timer setting function in 24 hours.
3. Indoor setting temperature range : 62°F~88°F (17°C~30°C)
4. Full function of LCD (Liquid Crystal Display)
NOTE: All the illustrations in this manual are for explanation purpose only. Your unit may appear
slightly different, but will function as described.
CAUTIONS
• Do not mix old and new batteries or batteries of a different type.
• Do not leave the batteries in the remote controller if it is not going to be used for 2 or 3 months.
• Dispose of the old batteries in a responsible manner.
REMOTE CONTROLLER SPECIFICATIONS
Rated Voltage 3.0V(Dry batteries R03/LR03×2)
Lowest Voltage of CPU Emitting Signal 2.0V
Signal Receiving Range 25 ft/8m
Environment 5°C~60°C(41°F~140°F)

Remote Control Manual - PS-121B / PSH-141A
4
INDICATORS ON LCD
MODE display
Displays the current selected mode. Including AUTO,
COOL, DRY, HEAT (PSH-141 model only) and FAN.
Transmission Indicator
This transmission indicator will light when the remote
controller transmits signals to the indoor unit.
Temp./Timer display
The temperature setting (from 17°C (62°F) to
30°C (88°F) or timer setting (0~24h) will be displayed. If
FAN mode is selected, there will be no display.
ON/OFF display
This indicator will be displayed when the unit is
operating.
MODE display (FAN mode)
FAN SPEED display
Displays the selected fan speed: AUTO, HIGH, MED
and LOW. Nothing displays when the fan speed is
selected in AUTO speed. When AUTO or DRY mode is
selected, no signals are displayed.
TIMER display
This display area shows the settings of the TIMER. If
only the Auto-on time function is set, LCD will display
TIMER ON. If only the Auto-off time function is set,
it will display TIMER OFF. If both functions are set, it
will display TIMER ON OFF which indicates you have
chosen both the Auto-on time and Auto-off time.
LOCK Indicator
LOCK is displayed when pushing the LOCK
button. Push the LOCK button to clear display.

Remote Control Manual - PS-121B / PSH-141A
5
HOW TO USE THE BUTTONS
Auto Operation
Ensure the unit is plugged in and power is available.
The OPERATION indicator on the display panel of the
indoor unit illuminates.
1. Press the MODE button to select Auto.
2. Press the TEMP button to set the desired
temperature. The temperature can be set within
a range of 17°C(62°F)~ 30°C (86°F) in 1°C(2°F)
increments.
3. Press the ON/OFF button to start the unit.
NOTE:
1. In the Auto mode, the unit can logically choose
Cooling, Fan, and Dehumidifying modes by sensing
the difference between the actual ambient room
temperature and the set temperature on the remote
controller.
2. In the Auto mode the fan speed is automatically
controlled.
3. If the Auto mode does not heat or cool adequately
for personal comfort, the desired mode can be
selected manually.
Cooling / Heating / Fan Operation
Ensure the unit is plugged in and power is available.
1. Press the MODE button to select COOL, HEAT,
(PSH-141 model only) or FAN mode.
2. Press the TEMP button to set the desired
temperature. The temperature can be set within
a range of 17°C(62°F)~ 30°C (86°F) in 1°C(2°F)
increments.
3. Press the FAN SPEED button to select the
fan speed in four steps- Auto, Low, Med,or High.
4. Press the ON/OFF button to start the unit.
NOTE:
In the FAN mode, the setting temperature is not
displayed in the remote controller and you cannot
control the room temperature. In this case, only steps
1, 3 and 4 may be performed.

Remote Control Manual - PS-121B / PSH-141A
6
HOW TO USE THE BUTTONS
Dehumidifying Operation
Ensure the unit is plugged in and power is available.
The OPERATION indicator on the display panel of the
indoor unit illuminates.
1. Press the MODE button to select DRY mode.
2. Press the TEMP button to set the desired
temperature. The temperature can be set within
a range of 17°C(62°F)~ 30°C (86°F) in 1°C(2°F)
increments.
3. Press the ON/OFF button to start the unit.
NOTE:
In the Dehumidifying mode, you cannot change the fan
speed. It is controlled automatically.

Remote Control Manual - PS-121B / PSH-141A
7
HOW TO USE THE BUTTONS
Timer Operation
Press the TIMER ON button to set the auto-on time of
the unit. Press the TIMER OFF button to set the auto-
off time of the unit.
1. Press the TIMER ON button. The remote controller
shows TIMER ON, the last Auto-on setting time and
the signal “h” will be shown on the LCD display area.
The Auto-on time can now be reset to START the
operation.
2. Push the TIMER ON button again to set desired
Auto-on time. Each time you press the button, the
time increases in 30 minutes increments, up to 10
hours, then at 1 hour increments up to 24 hours.
3. After setting the TIMER ON ,there will be a
half second delay before the remote controller
transmits the signal to the unit. After approximately
2 seconds, the signal “h” will disappear and the
set temperature will re-appear on the LCD display
window.
To set the Auto-Off Timer
1. Press the TIMER OFF button. The remote controller
shows TIMER OFF. The last Auto-off setting time
and the signal “h” will be shown on the LCD display
area. The Auto-off time can now be reset to START
the operation.
2. Push the TIMER OFF button again to set desired
Auto-off time. Each time you press the button, the
time increases in 30 minute increments, up to 10
hours, then at 1 hour increments up to 24 hours.
3. After setting the TIMER OFF, there will be a
half second delay before the remote controller
transmits the signal to the unit. After approximately
another 2 seconds, the signal “h” will disappear
and the set temperature will re-appear on the LCD
display window.

Remote Control Manual - PS-121B / PSH-141A
8
HOW TO USE THE BUTTONS
Examples of Timer Setting
TIMER ON
(Auto-on Operation)
The TIMER ON feature is useful when you want
the unit to turn on automatically. For instance, you
can set the unit to turn on before you will be returning
home, and the unit will automatically start operating at
the set time.
Example:
To start the unit in 6 hours:
1. Press the TIMER ON button, the last setting of
starting operation time and the signal “h” will show
on the display area.
2. Press the TIMER ON button to display “6:0h” on the
TIMER ON display of the remote controller.
3. Wait for about 3 seconds and the digital display
area will show the temperature again, indicating the
function has been activated.
IMPORTANT
The effective operation time set by the remote controller for the timer function is limited to the following
settings: 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10, 11, 12,
13, 14, 15,16,17, 18, 19, 20, 21, 22, 23 and 24.

Remote Control Manual - PS-121B / PSH-141A
9
HOW TO USE THE BUTTONS
Timer OFF
(Auto-off Operation)
The TIMER OFF feature is useful when you want
the unit to turn off automatically after you go to
bed or when you leave for work. The unit will stop
automatically at the set time.
Example:
To stop the unit in 10 hours:
1. Press the TIMER OFF button, the last setting for
stopping operation and the signal “h” will show on
the display area.
2. Press the TIMER OFF button to display “10h” on the
TIMER OFF display of the remote controller.
3. Wait for about 3 seconds and the digital display area
will show the temperature again. This function is now
activated.
Combined Timer
(Setting both ON and OFF timers simultaneously)
TIMER OFF → TIMER ON
(On → Stop → Start operation)
This feature is useful when you want to stop the unit
after you go to bed, and start it again in the morning
when you wake up or when you return home.
Example:
To stop the air conditioner in 2 hours and start it again
10 hours later:
1. Press the TIMER OFF button.
2. Press the TIMER OFF button again to display 2.0h
on the TIMER OFF display.
3. Press the TIMER ON button.
4. Press the TIMER ON button again to display 10h on
the TIMER ON display .
5. Wait for the remote control to display the set
temperature.