Panasonic S-12MT2U6 User manual

F570001

Operating Instructions

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.

Indoor Units

12 18 24

Nominal Capacity

* Panel (optional parts)

Type T2Type U2

Ceiling

U-36LE1U6

U-52LE1U6

Indoor Unit TypeType

Outdoor Units

Nominal Capacity

ME2 2WAY VRF System

MF2 3WAY VRF System

LE1 Mini VRF System

Outdoor Unit TypeType

U-72ME2U9

U-72MF2U9

U-96ME2U9

U-96MF2U9

120

U-120ME2U9

144

U-144ME2U9

U-120MF2U9 U-144MF2U9

S-12MT2U6 S-18MT2U6 S-24MT2U6

U2 4-Way Cassette 36" x 36" S-24MU2U6

(CZ-36KPU3U)*

S-36MU2U6

(CZ-36KPU3U)*

Connectable outdoor unit lineup

This booklet is the operating instructions for indoor unit. Regarding the outdoor unit, see the operating

instructions supplied with the outdoor unit.

CONTENTS

Page

PRODUCT INFORMATION ...........................................................................................................2

ALERT SYMBOLS.........................................................................................................................2

INSTALLATION LOCATION...........................................................................................................3

ELECTRICAL REQUIREMENTS ..................................................................................................3

SAFETY INSTRUCTIONS.............................................................................................................3

OPERATION CONDITION ............................................................................................................4

NAMES OF PARTS .......................................................................................................................5

Timer Remote Controller (Optional parts) .....................................................................................5

Refer to the Operating Instructions attached to the optional Timer Remote Controller.

High-spec Wired Remote Controller (Optional parts)....................................................................5

Refer to the Operating Instructions attached to the optional High-spec Wired Remote Controller.

ADJUSTING AIRFLOW DIRECTION ............................................................................................6

ADJUSTING AIRFLOW DIRECTION FOR MULTIPLE INDOOR UNITS USING SINGLE REMOTE

CONTROLLER (WIRED)...............................................................................................................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 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

F570001_EN.fm Page 2 Tuesday, June 23, 2015 9:25 AM

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.

NOTE

F570001_EN.fm Page 3 Tuesday, June 23, 2015 9:25 AM

OPERATION CONDITION

• 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.

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 temperature

Temperature range (°F/°C) Indoor Outdoor

*DBT *WBT *DBT *WBT

Heating & Cooling Max. 86/30 –/– 75/24 64/17.8

Min. 59/15 –/– 14/-10 14/-10

Cooling Max. 90/32 77/25 115/46 –/–

Min. 64/17.8 57/14 14/-10 –/–

Heating Max. 86/30 –/– 75/24 64/17.8

Min. 61/16 –/– -4/-20 -4/-20

Temperature range (°F/°C) Indoor Outdoor

*DBT *WBT *DBT *WBT

Cooling Max. 90/32 77/25 122/50 –/–

Min. 64/17.8 57/14 14/-10 –/–

Heating Max. 86/30 –/– 75/24 64/17.8

Min. 61/16 –/– -4/-20 -4/-20

Temperature range (°F/°C) Indoor Outdoor

*DBT *WBT *DBT *WBT

Cooling Max. 90/32 77/25 115/46 –/–

Min. 64/17.8 57/14 14/-10 –/–

Heating Max. 86/30 –/– 75/24 64/17.8

Min. 61/16 –/– -4/-20 -4/-20

F570001_EN.fm Page 4 Tuesday, June 23, 2015 9:25 AM

NAMES OF PARTS

Timer Remote Controller (Optional parts)

High-spec Wired Remote Controller (Optional parts)

INDOOR UNIT

Type U2 (4-Way Cassette 36" x 36") Type T2 (Ceiling)

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.

Ceiling panel

(optional)

Air intake grille

(air intake)

Water drain

Air outlet

(4 locations)

Air outlet

Water drain

Air intake grille

(air intake)

NOTE

(CZ-RTC4)

NOTE

(CZ-RTC3)

(CZ-RTC5)

F570001_EN.fm Page 5 Tuesday, June 23, 2015 9:25 AM

ADJUSTING AIRFLOW DIRECTION

ADJUSTING AIRFLOW DIRECTION FOR MULTIPLE

INDOOR UNITS USING SINGLE REMOTE CONTROLLER

(WIRED)

4-Way Cassette 36" x 36" (Type U2)

This air conditioners are equipped with auto flaps.

You can set the airflow direction to a specific angle or to the sweep mode using the remote

controller.

Do not move the flap with your hands.

• The air outlet flap can be easily removed and washed with water.

• Be sure to always stop operation before removing the flap.

• After washing with water, allow it to dry, and then remount it with the arrow facing outward.

Ceiling (Type T2)

A. Vertical directions (automatic)

This air conditioner is equipped with an auto flap. You can set the airflow direction to a specific

angle or to the sweep mode using the remote controller. (Refer to the description of the remote

controller.)

Do not move the flap with your hands.

B. Horizontal directions (manual)

The horizontal airflow direction can be adjusted manually by moving the vertical vanes to the

left or right.

• If multiple indoor units are connected to a remote controller, the airflow direction can be set for

each indoor unit by selecting the indoor units (see the operation below).

• To set the airflow for individual units, press the UNIT button. Display shows the indoor unit

number under group control. Set the airflow direction for the indoor unit that is shown on the

display.

• Each time UNIT is pressed, the indicator changes in the order shown below.

• When nothing is displayed, you can make the setting for all indoor units in one operation.

• The unit number is displayed as Outdoor Unit Number–Indoor Unit Number. It varies

depending on the number of units under group control.

One outdoor unit and eight indoor units Two outdoor units and four indoor units

No display Unit No.

1–1

Unit No.

1–2

Unit No.

1–3

Unit No.

1–8

display

Unit

No.

1–1

Unit

No.

1–2

Unit

No.

1–3

Unit

No.

2–4

Unit

No.

1–4

Unit

No.

2–1

F570001_EN.fm Page 6 Tuesday, June 23, 2015 9:25 AM

SPECIAL REMARKS

Heating Performance • Since this air conditioner utilizes outside air for heating, its heating performance

deteriorates as outside temperature decreases. (Due to heat pump system)

• It will take some time until the room becomes warmer after heating operation started. (Due

to hot air circulation system in order to heat a whole room)

Defrosting • This appliance may start defrosting operation to melt frost form in the outdoor unit during

long hour heating operation mode.

The indoor unit fan will stop for about 5 to 10 minutes at this time.

Heating Standby The remote controller shows “ ” (Heating standby) on the display in the following mode and

the indoor unit fan may be controlled.

• When operation started (Indoor unit fan stops for maximum 6 minutes.)

• When Thermostat activated

• When defrosting (Indoor unit fan stops.)

When Heating Operation

Started (Only 3WAY VRF)

When changed to heating mode from stopped or cooling operation mode, the unit does not

work for about 3 minutes for the sake of self-protection.

It may take about 5 to 10 minutes until the hot air is delivered after starting the heating

operation.

Oil Recovery The indoor unit fan may stop or run at a slow speed in order to recover the oil in the system

every 1 to 3 hours during cooling or heating operation.

The unit will automatically resume the original operation after about 5 to 10 minutes.

Remote Control Sensor The temperature sensor in the indoor unit normally senses the room temperature and can also

sense the ambient temperature of the remote controller.

For the details, consult the shop you purchased.

Should the power failure

occurs while the

unit is running

When the unit automatically resumes operation after temporary power failure, it uses the same

settings before the power was cut off.

F570001_EN.fm Page 7 Tuesday, June 23, 2015 9:25 AM

CARE AND CLEANING

Do not attempt to clean inside the unit by yourself.

Refer to the section “Care and Cleaning” in the Installation Instructions.

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 The air filter collects dust and other particles from the air and should be cleaned at regular

intervals when the filter indication ( ) on the display of the remote controller (wired type)

shows that the filter needs cleaning. If the filter gets blocked, the efficiency of the air conditioner

drops greatly.

The frequency with which the filter should be cleaned depends on the environment in which the

unit is used.

NOTE

F570001_EN.fm Page 8 Tuesday, June 23, 2015 9:25 AM

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

Symptom 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 operation

Indoor 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.

Wind-direction changes while operating.

Wind-direction setting cannot be made.

Wind-direction cannot be changed.

• When air discharge temperature is low or during defrost operation,

horizontal wind flow is made automatically.

• Flap position is occasionally set up individually.

When wind-direction is changed, flap operates

several times and stops at designated position.

When wind-direction is changed, flap operates after searching for standard

position.

Dust Dust accumulation inside indoor unit is discharged.

Poor cooling or heating performance The indoor unit is initially designed to control the indoor temperature detected

by the built-in room sensor inside the indoor unit.

Due to indoor unit installation position, however, the built-in sensor may

occasionally sense temperature improperly; for example, temperature

difference between the ceiling and floor, lighting apparatus, electric fan,

windows or waist-high partition walls, etc.

In this case, the unit does not operate properly at the desired temperature.

You may change the use of the temperature sensor inside the indoor unit to

that of the remote controller.

Then the desired room temperature can be controlled properly.

For details, consult your dealer.

F570001_EN.fm Page 9 Tuesday, June 23, 2015 9:25 AM

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.

• 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

performance

Air 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

F570001_EN.fm Page 10 Tuesday, June 23, 2015 9:25 AM

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