Panasonic Cs Mk7nku 9nku Operating Instructions Manual

							Operating Instructions
CS-MKS7NKU
CS-MKS9NKU
CS-MKS12NKU APPENDIX A
(852-6-4181-214-00-2)
A-1 
						

							This air conditioner uses the refrigerant R410A.
Split System Air Conditioner
Model No.
Panasonic Corporation
1006 Kadoma, Kadoma City, Osaka, Japan
85264181214002
Indoor Units
CS-MKS7NKU
CS-MKS9NKU
CS-MKS12NKU
Outdoor Units
CU-3KS19NBU
CU-4KS24NBU
CU-4KS31NBU
Operating Instructions
Before operating the unit, read these operating instructions thoroughly and keep them for future reference.
CV6233187648 
						

							2
FEATURES
This air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functions
are provided below; refer to these descriptions when using the air conditioner.
• Microprocessor Controlled Operation
The interior compartment of the remote controller
contains several features to facilitate automatic operation, 
easy logically displayed for easy use.
• Simple One-touch Remote Controller
The remote controller has several features to facilitate 
automatic operation.
• 24-Hour ON or OFF Timer
This timer can be set to automatically turn the unit on or 
off at any time within a 24 hour period.
• 1-Hour OFF Timer
This timer can be set to automatically turn off the unit at 
any time after one hour.
• Night Setback
This function saves energy by controlling operation to 
provide a quieter operating sound than normal.
• Automatic and 3-step Fan Speed
Auto/High/Medium/Low• Air Sweep Control
This function moves a flap up and down in the air outlet, 
directing air in a sweeping motion around the room and 
providing comfort in every corner.
• Auto. Flap Control
This automatically sets the flap to the optimum position 
during heating, cooling, and drying operation.
• Automatic Restart Function for Power Failure
Even when power failure occurs, preset programmed 
operation can be reactivated once power resumes.
• High Power Operation
The unit operates at maximum output for 30 minutes, 
regardless of the desired temperature.
The fan speed is 1 step above “High”.
• Quiet Operation
The fan rotates slower than the fan speed setting to 
provide a quieter operating sound.
CONTENTS
Page Page
FEATURES ............................................................................. 2
PRODUCT INFORMATION .................................................... 2
SAFETY PRECAUTIONS ....................................................... 2
INSTALLATION LOCATION .................................................... 3
ELECTRICAL REQUIREMENTS ........................................... 3
SAFETY INSTRUCTIONS...................................................... 3
NAMES OF PARTS ................................................................ 5
USING THE REMOTE CONTROLLER ................................ 10
OPERATION WITH THE REMOTE CONTROLLER ............ 12
1. Operation .............................................................. 12
2. Adjusting the Fan Speed ....................................... 13
3. Fan Only ................................................................ 13
4. Night Setback Mode .............................................. 14
5. QUIET Mode ......................................................... 15
6. HIGH POWER Mode............................................. 15SPECIAL REMARKS ........................................................... 16
SETTING THE TIMER ......................................................... 17
USING THE 1-HOUR OFF TIMER....................................... 19
TIPS FOR ENERGY SAVING .............................................. 19
ADJUSTING THE AIRFLOW DIRECTION........................... 20
OPERATION WITHOUT THE REMOTE CONTROLLER ..... 21
CARE AND CLEANING ....................................................... 21
WIRED REMOTE CONTROLLER........................................ 23
TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) .... 24
OPERATING RANGE ........................................................... 24
SPECIFICATIONS ................................................................ 25
PRODUCT INFORMATION
If you have problems or questions concerning your Air 
Conditioner, you will need the following information. 
Model and serial numbers are on the nameplate on the 
bottom of the cabinet.
Model No.  __________________________________
Serial No. ___________________________________
Date of purchase _____________________________
Dealer’s address _____________________________
Phone number _______________________________
SAFETY PRECAUTIONS
The following symbols used in this manual, alert you 
to potentially dangerous conditions to users, service 
personnel or the appliance:
This symbol refers to a hazard or 
unsafe practice which can result in 
severe personal injury or death.
This symbol refers to a hazard or 
unsafe practice which can result in 
personal injury or product or property 
damage.
CAUTION 
						

							3
INSTALLATION LOCATION
• We recommend that this air conditioner be installed properly by qualified 
installation technicians in accordance with the Installation Instructions 
provided with the unit.
• Before installation, check that the voltage of the electric supply in your home or 
office is the same as the voltage shown on the nameplate.
ELECTRICAL REQUIREMENTS
1.All wiring must conform to the local electrical codes. Consult your dealer or a 
qualified electrician for details.
2.Each unit must be properly grounded with a ground (or earth) wire or through 
the supply wiring.
3.Wiring must be done by a qualified electrician.
SAFETY INSTRUCTIONS
• Read this Instruction Manual carefully before using this air conditioner. If 
you still have any difficulties or problems, consult your dealer for help.
• This air conditioner is designed to give you comfortable room conditions. 
Use this only for its intended purpose as described in this Instruction 
Manual. • Do not install this air conditioner where there are fumes or flammable 
gases, or in an extremely humid space such as a greenhouse.
• Do not install the air conditioner where excessively high heat-
generating objects are placed.
Avoid:To protect the air conditioner from heavy corrosion, avoid installing the outdoor 
unit where salty sea water can splash directly onto it or in sulphurous air near a 
spa.
Pull off the power plug from a receptacle, or switch off the breaker, or switch off 
the power disconnecting mean to isolate the air conditioner from the main power 
supply when not in use for a long time.
• Confirm to authorized dealer or specialist on usage of specified 
refrigerant type.
Using of refrigerant other than the specified type may cause product 
damage, burst and injury etc.
• Never touch the unit with wet hands.
• Never use or store gasoline or other flammable vapor or liquid near the 
air conditioner — it is very dangerous.
• Do not use this appliance in a potentially explosive atmosphere.
• This air conditioner has no ventilator for intaking fresh air from 
outdoors. You must open doors or windows frequently when you use 
gas or oil heating appliances in the same room, which consume a lot of 
oxygen from the air. Otherwise there is a risk of suffocation in an 
extreme case.
• Do not swallow the battery.
• After removing the battery from remote controller, keep it away from the 
reach of children. The battery can cause death by suffocation if 
swallowed.
• When inserting the battery, make sure the polarities (+ and -) are correct.
NOTE 
						

							4
• To prevent possible hazards from insulation failure, the unit must 
be grounded.
• Do not clean inside the indoor and outdoor units by users. Engage 
authorized dealer or specialist for cleaning.
• In case of malfunction of this appliance, do not repair by yourself. 
Contact to the sales dealer or service dealer for a repair.
• Refrigerant gas leakage may cause fire.
• For safety, be sure to turn the air conditioner off and also to 
disconnect the power before cleaning.
• Pull off the power plug from a receptacle, or switch off the breaker, or 
switch off the power disconnecting mean to isolate the air conditioner 
from the main power supply in case of emergency.
• Do not turn the air conditioner on and off from the power mains switch. 
Use the ON/OFF operation button.
• Do not stick anything into the air outlet of the outdoor unit. 
This is dangerous because the fan is rotating at high speed.
• Do not touch the air inlet or the sharp aluminum 
fins of the outdoor unit. You may get injured.
• Keep the fire alarm and the air outlet at least 1.5m away from the unit.
• Do not let children play with the air conditioner.
• Do not cool or heat the room too much if babies or invalids are present.
• Do not sit or step on the unit.
You may fall down accidentally.
• Do not stick any object 
into the FAN CASE.
You may be injured and 
the unit may be damaged.
• This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must 
accept any interference received, including interference that may cause 
undesired operation.
• This equipment has been tested and found to comply with the limits for 
a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful 
interference in a residential installation. This equipment generates, uses and 
can radiate radio frequency energy and, if not installed and used in 
accordance with the instructions, may cause harmful interference to radio 
communications. However, there is no guarantee that interference will not 
occur in a particular installation. If this equipment does cause harmful 
interference to radio or television reception, which can be determined by 
turning the equipment off  and on, the user is encouraged to try to correct the 
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which 
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
• FCC Caution: To assure continued compliance, follow the attached installation 
instructions.  Any changes or modifications not expressly approved by the 
party responsible for compliance could void the user's authority to operate this 
equipment.
CAUTION
NOTICE 
						

							5
NAMES OF PARTS
This illustration is based on the external view of a standard model.
Consequently, the shape may differ from that of the air conditioner which you 
have selected.
This air conditioner consists of an indoor unit and an outdoor unit. You can control 
the air conditioner with the remote controller.
Air IntakeAir from the room is drawn into this section and passes through air filters which 
remove dust.
Air OutletConditioned air is blown out of the air conditioner through the air outlet.
Remote ControllerThe remote controller controls power ON/OFF, operation mode selection, 
temperature, fan speed, timer setting, and air sweeping.
Refrigerant TubesThe indoor and outdoor units are connected by copper tubes through which 
refrigerant gas flows.
Drain HoseMoisture in the room condenses and drains off through this hose.
Outdoor (Condensing) UnitThe outdoor unit contains the compressor, fan motor, heat exchanger coil, and 
other electrical components.
INDOOR UNIT Air Intakes
Remote ControllerAir Outlet
Refrigerant TubesDrain Hose
OUTDOOR UNIT
Air Outlet
NOTE 
						

							6
UNIT DISPLAY AND OPERATION BUTTON
REMOTE CONTROL receiverThis section picks up infrared signals from the remote controller (transmitter).
OPERATION buttonWhen the remote controller cannot be used, pressing this button enables cooling 
operation.
Each time this button is pressed, the operation mode changes cyclically. 
OPERATION lampThis lamp lights when the system is in the continuous DRY (orange), COOL 
(green) and FAN (green) mode.
TIMER lampThis lamp lights when the system is being controlled by the timer.
QUIET lampThis lamp lights during operation in the QUIET mode.
The unit’s display lamps are dimmed during operation in the NIGHT SETBACK 
mode.
QUIET
REMOTE CONTROL receiver Avoid using radio equipment 
such as mobile phone near 
(within 4 ft. (1.2m)) the remote 
control receiver. Some radio 
equipment may cause 
malfunction of the unit.
If the trouble happens, 
disconnect power and restart 
the air conditioner after a few 
minutes.IMPORTANT
OPERATION lamp 
TIMER lamp
QUIET lamp
OPERATION button  INDOOR UNIT
Cooling operation  Stop
NOTE 
						

							7
REMOTE CONTROLLER (DISPLAY)
(1) Operation mode
MILD DRY ..............................
COOL .....................................
FAN ........................................
(2) Fan speed
Automatic operation ...............
HIGH .....................................
MEDIUM.................................
LOW .......................................
(3) Temperature setting 
60–86°F
When set to 80 °F 
temperature indication............(4) Timer
24-hour clock with ON/OFF 
program Timer........................
ON Timer. ...............................
OFF Timer. .............................
1-hour OFF Timer...................
(5) NIGHT SETBACK ..................
(6) Confirmation of 
transmission ...........................
(7) Auto. fla.dication .....................
Flap angle indication ..............
Sweep indication ....................
(8) High power operation .............
(9) Quiet operation.......................
Displayed when setting timer Displayed when transmitting data
Displayed when indoor unit sensor 
is in use
Displayed when setting 
temperature
Displayed when temperature is 
shown
Displayed when the
time display is set to
12-hour time.
Symbols 
						

							8
REMOTE CONTROLLER
The illustration above pictures the remote controller after the cover has been 
opened.
TransmitterWhen you press the buttons on the remote controller, the   mark appears in the 
display to transmit the setting changes to the receiver in the air conditioner.
SensorA temperature sensor inside the remote controller senses the room temperature.
DisplayInformation on the operating conditions is displayed while the remote controller is 
switched on. If the unit is turned off, FLAP setting and FAN SPEED setting are 
not displayed.
QUIET button: When you press this button, the fan rotates slower than the fan speed 
setting to provide a quieter operating sound.
ON/OFF operation buttonThis button is for turning the air conditioner on and off.
1 HR. TIMER button
(1-HOUR OFF TIMER):  When you press this button, regardless of whether the unit is operating or 
stopping, the unit operates for one hour and then shuts down.
TransmitterSensor
(Cover closed)
Display
FAN SPEED selector button
FLAP button
ON TIME
setting
buttonsReturn button Advance button
CANCEL button
SENSOR buttonCLOCK button
ACL button ON/OFF operation button
1 HR. TIMER button
Temperature setting buttons (TEMP.)
MODE selector button
Advance buttonNIGHT SETBACK button
HIGH POWER button
OFF TIME 
setting 
buttons Return button QUIET button
ADDRESS switch
Temperature display
selector buttonTime display selector button
NOTE 
						

							9
REMOTE CONTROLLER (CONTINUED)
Temperature setting buttons
(TEMP.)Press the   button to increase the set temperature.
Press the   button to reduce the set temperature.
The temperature setting changes by 1 °C or 2 °F each time one of the TEMP. 
buttons is pressed.
MODE selector buttonUse this button to select DRY, COOL or FAN mode.
(DRY): The air conditioner reduces the humidity in the room.
(COOL): The air conditioner makes the room cooler.
(FAN): The air conditioner works only as a circulation fan.
FAN SPEED selector button: The air conditioner automatically decides the fan speeds.
: High fan speed
: Medium fan speed
: Low fan speed
NIGHT SETBACK buttonFor details, see “4. Night Setback Mode”. When you press this button in the  DRY 
or COOL mode, the   mark appears in the display, and the remote controller will 
automatically adjust the set temperature to save energy.
FLAP buttonPress this button either to select the setting of the airflow direction to the auto. 
flap in each mode or one of the six possible positions manually or to select the 
sweep function which moves the flap up and down automatically.
:  Auto flap setting: If selected in a cooling or dry operation, the flap is set at 
position (7) in the following chart.
:  The airflow direction can be set manually. (six positions)
:  The flap moves up and down automatically.
When you press the FLAP button, the air flow direction will be changed one by 
one as follows.
HIGH POWER button:  If this button is pressed during DRY, COOL or FAN operation, the unit 
operates at maximum output for 30 minutes, regardless of the desired 
temperature.
The fan speed is 1 step above “High”.
ON TIME/OFF TIME setting
buttonsNo display: The timer does not operate.
: The air conditioner starts at the set time.
: The air conditioner stops at the set time.
: The air conditioner stops and starts, or starts and stops, at the 
set times every day. For details, see “SETTING THE TIMER”.
SENSOR buttonWhen you press this button (use a small-tipped object such as a ballpoint pen), 
the   mark will appear at the display. And the room temperature is detected by 
the sensor which is built into the indoor unit and the air conditioner is controlled 
accordingly.
If the remote controller is located near a heat source, such as a space heater or in direct 
sunlight, press the SENSOR button to switch to the sensor on the indoor unit.
The indoor fan runs continuously when the system is in normal operation. It does not turn off when the 
desired room temperature is reached. If Night Set Back mode is selected, the fan will turn off 
intermittently during cooling operation in order to control air flow.
NOTE
SWEEP
NOTE
NOTE