Panasonic VRF System Air Conditioner S 07mm2u6_s 09mm2u6_s 12mm2u6_s 15mm2u6_s 18mm2u6 Operating Instructions

							
F569716
Operating Instructions
VRF System Air Conditioner
Model No.
This air conditioner uses the refrigerant R410A.
Before operating the unit, read these operating instructions thoroughly \
and keep them for future reference.
* Salt-Air Damage Resistant Specifications.
Indoor Unit
791218
Nominal Capacity
M2Slim Low Static Ducted
36
U-36LE1U6
52
U-52LE1U6
Indoor Unit TypeType
Outdoor Units
Nominal Capacity
ME22WAY VRF System
MF13WAY VRF System
LE1Mini VRF System
Outdoor Unit TypeType
15
72
U-72ME2U9
U-72MF1U9
96
U-96ME2U9
U-96MF1U9
120
U-120ME2U9
144
U-144ME2U9
S-07MM2U6S-09MM2U6S-12MM2U6S-15MM2U6S-18MM2U6

 Connectable outdoor unit lineup
This booklet is the operating instructions for indoor unit. Regarding th\
e outdoor unit, see the operating 
instructions supplied with the outdoor unit. 
						

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CONTENTS
Page
PRODUCT INFORMATION ........................................................................................................... 2
ALERT SYMBOLS......................................................................................................................... 2
INSTALLATION LOCATION ...........................................................................................................3
ELECTRICAL REQUIREMENTS .................................................................................................. 3
SAFETY INSTRUCTIONS.............................................................................................................3
OPERATION CONDITION ............................................................................................................5
NAMES OF PARTS ....................................................................................................................... 6
Timer Remote Controller (Optional parts) ..................................................................................... 6
 Refer to the Operating Instructions attached to the optional Timer Remote Controller.
High-spec Wired Remote Controller (Optional parts) .................................................................... 6
 Refer to the Operating Instructions attached to the optional High-spec Wired Remote Controller.
ADJUSTING AIRFLOW DIRECTION ............................................................................................ 6
SPECIAL REMARKS .................................................................................................................... 7
CARE AND CLEANING ................................................................................................................ 8
TROUBLESHOOTING .................................................................................................................. 9
CHECK BEFORE REQUIRING SERVICES ................................................................................ 10
TIPS FOR ENERGY SAVING ..................................................................................................... 10
SPECIFICATIONS ....................................................................................................................... 11
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 side of the unit.
Model No.  _________________________________ Serial No. _______________________
Date of purchase ______________________________________________________________
Dealer’s address ______________________________________________________________
Phone number ________________________________________________________________
ALERT SYMBOLS
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.
NOTE
NOTE
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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
SAFETY INSTRUCTIONS
• Read these Operating Instructions 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 these Operating Instructions. • 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.
 All wiring must conform to the local electrical codes. Consult your dealer or a qualified 
electrician for details.
 It is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or 
Residual Current Device (RCD) to prevent electric shock or fire.
 Each unit must be properly grounded with a ground (or earth) wire or through the supply 
wiring.
 Wiring must be done by a qualified electrician.
To warm up the system, the power mains must be turned on 
at least five (5) hours before operation. Leave the power 
mains ON unless you will not be using this appliance for an 
extended period.
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.
• 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.
• Check for a leaking refrigerant! Refrigerant gas may produce a toxic gas if it comes 
in contact with fire.
Powe r m ains
ON
NOTE
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• For safety, be sure to turn the air conditioner off and also to disconnect the 
power before cleaning or servicing.
• 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 
5 feet (1.5 m) 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.
The compressor may occasionally stop during thunderstorms. 
This is not a mechanical failure. The unit automatically recovers after a few minutes.
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OPERATION CONDITION
Use this air conditioner under the following temperature range.
3 way system
2 way system
Mini VRF system
* DBT: Dry bulb temperature
* WBT: Wet bulb temperatureTemperature range (°F/°C)Indoor Outdoor
*DBT *WBT *DBT *WBT
Heating & CoolingMax. 86/30 –/– 86/30 75/24
Min. 59/15 –/– 16/-8.8 14/-10
CoolingMax. 90/32 77/25 115/46 –/–
Min. 64/17.8 57/14 14/-10 –/–
HeatingMax. 86/30 –/– 75/24 64/17.8
Min. 61/16 –/– -4/-20 -4/-20
Temperature range (°F/°C)Indoor Outdoor
*DBT *WBT *DBT *WBT
CoolingMax. 90/32 77/25 122/50 –/–
Min. 64/17.8 57/14 14/-10 –/–
HeatingMax. 86/30 –/– 75/24 64/17.8
Min. 61/16 –/– -4/-20 -4/-20
Temperature range (°F/°C)Indoor Outdoor
*DBT *WBT *DBT *WBT
CoolingMax. 90/32 77/25 115/46 –/–
Min. 64/17.8 57/14 14/-10 –/–
HeatingMax. 86/30 –/– 75/24 64/17.8
Min. 61/16 –/– -4/-20 -4/-20
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NAMES OF PARTS
Timer Remote Controller (Optional parts)
High-spec Wired Remote Controller (Optional parts)
ADJUSTING AIRFLOW DIRECTION 
INDOOR UNIT
Type M2 (Slim Low Static Ducted)
Refer to the Operating Instructions 
attached to the optional Timer Remote 
Controller.
Refer to the Operating Instructions 
attached to the optional High-spec Wired 
Remote Controller.
„Slim Low Static Ducted type (M2)
This air conditioner is not equipped with air outlet parts. These must be obtained locally. Please 
refer to the manual of the locally adopted air outlet parts.
Water drain
Electrical box
Air intake side flange (rear)
NOTE
(CZ-RTC2)
NOTE
(CZ-RTC3)
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SPECIAL REMARKS
How it works Once the room temperature reaches the level that was set, the unit repeats the cycle of 
turning on and off automatically.
 In order to prevent the humidity in the room from rising again, the indoor fan also turns off 
when the unit stops operating.
 The fan speed is set to ‘‘LO.’’ automatically, and cannot be adjusted.
 ‘‘DRY’’ operation is not possible if the outdoor temperature is 59°F or less.
Heating performance Because this appliance heats a room by utilizing the heat of the outside air (heat pump 
system), the heating efficiency will fall off when the outdoor temperature is very low. If 
sufficient heat cannot be obtained with this heat pump, use another heating appliance in 
conjunction with this unit.
Defrosting When the outdoor temperature is low, frost or ice may form on the outdoor heat exchanger 
coil, reducing the heating performance. When this happens, a microcomputer-controlled 
defrosting system operates. At the same time, the fan on the indoor unit stops (or runs at 
very low speed in some cases) and the ‘‘STANDBY’’ indicator appears on the display until 
defrosting is completed. Heating operation then restarts after several minutes. (This interval 
will vary slightly depending upon the outdoor temperature and the way in which frost forms.)
 (standby) on the display For several minutes after the start of heating operation, the indoor fan will not start running 
(or it will run at very low speed in some cases) until the indoor heat exchanger coil has 
warmed up sufficiently. This is because a cold draft prevention system is operating. During 
this period, the ‘‘ ’’ (standby) indicator remains displayed.

 (standby) remains displayed during defrosting or when the compressor has been turned 
off (or when the unit is running at very low speed) by the thermostat when the system is in 
the heating mode.
 Upon completion of defrosting and when the compressor is turned on again, ‘‘ ’’ (standby) 
will turn off automatically as heating operation resumes.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume 
operation (once the power is restored) using the same settings before the power was cut off.
‘‘DRY’’ Operation
Heating Operation
NOTE
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CARE AND CLEANING
1. For safety, be sure to turn the air conditioner off and also to disconnect the power 
before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the internal 
components and cause an electric shock hazard.
Air intake and outlet side
(Indoor unit)Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush, or wipe 
them with a clean soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When 
cleaning the air outlet side, be careful not to force the vanes out of place.
1. Never use solvents or harsh chemicals when cleaning the indoor unit. Do not wipe 
plastic parts using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if handled 
improperly; be especially careful when you clean these parts.
3. The internal coil and other components of the outdoor unit must be cleaned every 
year. Consult your dealer or service center.
Air filter
(Field supplied)The air filter collects dust and other particles from the air and should be cleaned at regular 
intervals as indicated in the table below. If the filter gets blocked, the efficiency of the air 
conditioner drops greatly.
Ty p e M 2
Period (depending on filter specifications)
* Slim Low Static Ducted
(M2)An air filter is not provided with this air conditioner at the time of shipment. To get clean air and 
to extend the service life of the air conditioner, an air filter must be installed in the air intake. 
For installation and cleaning the air filter, consult your dealer or service center.
The frequency with which the filter should be cleaned depends on the environment in which 
the unit is used.
NOTE
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TROUBLESHOOTING
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, 
contact your dealer or a service center.
INDOOR UNIT
OUTDOOR UNITSymptom Cause
Noise Sound like streaming water during 
operation or after operation Sound of refrigerant liquid flowing inside unit
 Sound of drainage water through drain pipe
Cracking noise during operation or 
when operation stops.Cracking sound due to temperature changes of parts
Odor Discharged air is smelled during 
operation.Indoor odor components, cigarette odor and cosmetic odor accumurated in 
the air conditioner and its air is discharged.
Unit inside is dusty. Consult your dealer.
Dewdrop Dewdrop gets accumurated near air 
discharge during operationIndoor moisture is cooled by cool wind and accumulated by dewdrop.
Fog Fog occurs during operation in cooling 
mode.
(Places where large amounts of oil 
mist exist at restaurants.) Cleaning is necessary because unit inside (heat exchanger) is dirty. 
Consult your dealer as technical engineering is required.
 During defrost operation
Fan is rotating for a while even though operation 
stops. Fan rotating makes operation smoothly.
 Fan may sometimes rotate because of drying heat exchanger due to 
settings.
Dust Dust accumulation inside indoor unit is discharged.
At the initial high-speed operation, the fan may 
sometimes rotate faster (for 3 to 30 minutes) than 
the setting speed.This is for operation check in order to confirm whether the fan motor rotation is 
within use range.
Symptom Cause
No 
operationWhen power is turned ON instantly. Operation is not activated for the first approx. 3 minutes because compressor 
protection circuit is activated.
When operation is stopped and 
resumed immediately.
Noise Noise often occurs in heating mode. During defrost operation
Steam Steam often occurs in heating mode.
When stopped by remote controller, outdoor unit fan 
is sometimes operating for a while even though 
outdoor compressor is stopped.Fan rotating makes operation smoothly.
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CHECK BEFORE REQUIRING SERVICES
If your air conditioner still does not work properly although you checked the points as described above, first stop the operation and 
turn off the power switch. Then contact your dealer and report the serial number and symptom. Never repair your air conditioner by 
yourself since it is very dangerous for you to do so. You also report if the inspection mark   and the letters E, F, H, L, P in 
combination with the numbers appear on the LCD of the remote controller.
TIPS FOR ENERGY SAVING
Avoid
• Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be damaged.
 Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the 
sun, it will take longer to cool the room.
Do
 Always try to keep the air filter clean. (Refer to “CARE AND CLEANING”.) A clogged filter will impair the performance of the unit.
 To prevent conditioned air from escaping, keep windows, doors and any other openings closed.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation once power is restored using the 
same settings before the power was interrupted.
Symptom Cause Remedy
Air conditioner does not run at 
all although power is turned 
on.Power failure or after power failure Press ON/OFF operation button on remote controller 
again.
Operation button is turned off.  Switch on power if breaker is turned off.
 If breaker has been tripped, consult your dealer 
without turning it on.
Fuse blow out. If blown out, consult your dealer.
Poor cooling or heating 
performanceAir intake or air discharge port of indoor 
and outdoor units is clogged with dust or 
obstacles.Remove dust or obstruction.
Wind speed switch is set to “Low”. Change to “High” or “Strong”.
Improper temperature settings Refer to “TIPS FOR ENERGY SAVING”.
Room is exposed to direct sunlight in 
cooling mode.
Doors and /or windows are open.
Air filter is clogged. Refer to “CARE AND CLEANING”.
Too much heat sources in room in cooling 
mode.Use minimum heat sources and in a short time.
Too many people in room in cooling mode. Reduce temperature settings or change to “High” or 
“Strong”.
NOTE
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