Panasonic CS-KE18NB4UW, CS-MKE12NB4U, CS-MKE9NB4U, CU-4KE31NBU, CU-4KE24NBU User Manual

TECHNICAL & SERVICE MANUAL

INDOOR UNIT :

CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U

DC INVERTER MULTI-SYSTEM AIR CONDITIONER

Capacity

9,000BTU / h

11,900BTU / h

17,500BTU / h

Indoor Model No.

Body (Panel)

CS-MKE9NB4U (CZ-18BT1U)

CS-MKE12NB4U (CZ-18BT1U)

CS-KE18NB4UW (CZ-18BT1U)

Semi-Concealed Type Indoor Unit

Product Code No.

Body (Panel)

1 852 361 10 (1 852 361 15)

1 852 361 11 (1 852 361 15)

1 852 361 07 (1 852 361 15)

Body

Panel

CS-MKE9NB4U (Body) & CZ-18BT1U (Panel) CS-MKE12NB4U (Body) & CZ-18BT1U (Panel) CS-KE18NB4UW (Body) & CZ-18BT1U (Panel)

< Applicable Multi-Outdoor Units >

CU-3KE19NBU (3-room multi unit) CU-4KE24NBU (4-room multi unit) CU-4KE31NBU (4-room multi unit)

Remote Controller

Wired Remote Controller

(Option)

REFERENCE NO. SM700882

SAFETY PRECAUTIONS

• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them.

• The precautionary items here are divided into " Warning" and " Caution" items. Items in particular which may cause death or serious injury to the service personnel if the work is not performed correctly, are included in the " Warning" table. However, even precautionary items identified as " Caution" also have the potential for serious consequences if not performed correctly. Important safety precautions are described for all items in both categories. Be sure to carefully follow all of them.

• Symbol Indication

: This symbol indicates items to which we need to pay attention.

In this triangle, a definite precautionary item is described.

: This symbol indicates the item to be prohibited.

In or close to this circle, a prohibited item is described.

: This symbol indicates the items requiring special attention or instruction.

In or close to this circle, a prohibited item is described.

• After doing repair work, perform a test run to confirm that there are no abnormalities. At the same time, explain the precautions in use to the user.

Warning

Before performing an overhaul, disconnect the power plug or power cable from the unit. Performing the work with the power supplied to the unit, may cause an electric shock.

When repair work or circuit inspection that requires power supply for the air conditioner, is to be performed, do not touch the charging section. Doing so may cause an electric shock.

Prohibit

For the step-up capacitor attached to the electric section, perform the repair work after sufficiently discharging it. Insufficient capacitor discharge may cause an electric shock.

Do not perform repair work on the electric sections with wet hands. Doing so may cause an electric shock.

Do not start or stop the air conditioner by means of connecting or disconnecting the power plug. Doing so may cause an electric shock or fire.

When conducting repair work only use components included in the parts list for the corresponding unit and perform the work with the appropriate tools. Incorrect or poor repair work may cause an electric shock or fire.

Never modify the unit. Doing so may cause an electric shock or fire.

Perform all electric work according to local applicable regulations related to electrical equipment or interior wiring regulation and make sure to use the exclusive circuit. Insufficient capacity to the electric circuit or defective arrangement results may cause an electric shock or fire.

Make sure to replace any power cable or lead wire showing any signs of scratch or deterioration. Failure to do so may cause an electric shock, overheating or fire.

Make sure that there is no dust on or slack in the power plug and insert fully into the socket. Dust or incomplete connections may cause an electric shock or fire.

Do not damage or process the power cord, as it may cause an electric shock or fire.

Prohibit

For the wiring between the indoor unit and outdoor unit, securely fix the specified cable onto the terminal plate. Poorly fixed wiring may cause a heat or fire.

After connecting the wiring between the indoor unit and outdoor unit, attach the terminal cover securely. Incomplete attachment of the terminal cover may cause overheating or fire.

2

Warning

If refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite.

If refrigerant gas leaks during the work, ventilate the room. If refrigerant gas catches fire, harmful gas may be generated.

Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle. If air or other contaminants mix with the gas, pressure will become extremely high in the refrigerating cycle, which may cause a unit breakdown."

When the welded section of the compressor intake or discharge pipe is to be disconnected, perform it in a well-ventilated place after sufficiently recovering the refrigerant gas. Any residue gas may jet out refrigerant or refrigerating machine oil, which may cause an injury.

When the work is to be performed in a high place (About 2 meters or more), make sure to wear a safety helmet, gloves and safety belt. Insufficient safety gear may cause a serious injury in case of a fall.

When the unit is to be relocated, confirm that the new installation location has sufficient strength for the weight of the unit. Insufficient strength of the installation location and incomplete installation work may cause an injury due to the unit falling.

When the remote controller batteries are replaced, dispose of the old batteries out of the reach of children. If a child swallows a battery, make sure that the child gets immediate medical attention.

Caution

Prohibit

Do not wash the air conditioner with water, as this may cause an electric shock or fire.

For the repair work in places with high humidity or moisture, make sure to ground the unit. Failure to do so may cause an electric shock.

Confirm that the component attachment position, wiring condition, soldering condition and connector connection are normal. If not, it may cause overheating or fire.

Confirm that the temperature around the compressor is not too high, and then perform the repair work. Failure to do so may cause a burn.

Perform welding work in a place with good ventilation. If the work is performed in a poorly ventilated area, it might cause a lack of oxygen.

If the installation plate or attachment frame has deteriorated due to corrosion, etc., replace it. Failure to do so may cause an injury due to the unit falling.

When the cleaning is to be performed, make sure to turn off the power and pull out the plug. Touching the fan that is rotating at high speed may result in an injury.

When the indoor unit is to be removed, do not place it on an incline. Doing so may cause wet furniture because water left inside may trickle down.

Do not hold the sharp end of the unit or the aluminum fins, as it may cause an injury to your hand or finger.

Prohibit

After repairs, make sure to measure the insulation resistance and confirm that the value is 1 Mohm or more. Any insulation error may cause an electric shock.

After repairs, make sure to check the drainage of the indoor unit. Inappropriate drainage may cause wet furniture and floors due to water leakage.

3

1. OPERATING RANGE

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Heating

Maximum

Minimum

Maximum

Minimum

95 °F DB / 71 °F WB

67 °F DB / 57 °F WB

80 °F DB / 67 °F WB

– DB / – WB

115 °F DB

14 °F DB

75 °F DB / 65 °F WB

– DB / 0 °F WB

7

2. SPECIFICATIONS

2-1. Unit Specifications

2-1-1.

Type

Voltage Rating

Performance

Electrical Rating

Features

Indoor Unit CS-MKE9NB4U & CZ-18BT1U

Semi-Concealed Type Indoor Unit

230V Single-Phase 60Hz

Cooling

Total Capacity

Air Circulation (Hi/Me/Lo) ft3/min (m3/h) Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

--

Controls / Temperature Control Control Unit Timer

Airflow Direction (Indoor) Horizontal

Air Filter Refrigerant Operation Sound Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm) Wired Remote Controller (Option) CZ-RD515U

Narrow tube Wide tube

BTU/h

kW

WPower Input

IndoorFan Speeds

Vertical

dB-AIndoor : Hi/Me/Lo

9,000

2.65

221 (376) / 206 (350) / 194 (330)

3.4 V A

0.1

16

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps

Washable, Anti-Mold

33 / 32 / 31 34 / 33 / 32

Flare Type

<230V>

Heating

12,300

3.6

247 (420) / 235 (399) / 224 (381)

-

187 to 253

0.12 18

-

Auto

R410A

1/4 (6.35) 3/8 (9.52)

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth 28-1/8 (714)

Weight Ib. (kg)

Shipping Volume

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80 °F DB / 67 °F WB

Outdoor air temperature 95 °F DB / 75 °F WB

Net Shipping

Indoor Unit

(CS-MKE9NB4U & CZ-18BT1U)

inch (mm) (313)12-5/16

inch (mm) 22-5/8 (575) inch (mm) inch (mm) -

inch (mm) 24-13/16 (630) inch (mm)

Ib. (kg)

cu.ft (m

3

)

Heating: Indoor air temperature 70 °F DB

(625)24-19/32 (625)24-19/32

-

(18.7)41.3

-

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Outdoor air temperature 47 °F DB / 43 °F WB

(CS-MKE9NB4U)

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

Panel

(CZ-18BT1U)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

8

Indoor Unit CS-MKE9NB4U & CZ-18BT1U

Type

Voltage Rating

Total Capacity

BTU/h

kW

Air Circulation (Hi/Me/Lo) ft3/min (m3/h)

Performance

Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

221 (376) / 206 (350) / 194 (330)

V A

WPower Input

--

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube Wide tube

Wired Remote Controller (Option) CZ-RD515U

Semi-Concealed Type Indoor Unit

208V Single-Phase 60Hz

Cooling

9,000

2.65

3.4

0.11 15

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps

Washable, Anti-Mold

33 / 32 / 31 34 / 33 / 32

<208V>

Heating

12,300

3.6

247 (420) / 235 (399) / 224 (381)

-

187 to 253

0.13 17

-

Auto

R410A

Flare Type

1/4 (6.35) 3/8 (9.52)

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth 28-1/8 (714)

Weight Ib. (kg)

Shipping Volume

Net Shipping

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80 °F DB / 67 °F WB

Outdoor air temperature 95 °F DB / 75 °F WB

Indoor Unit

(CS-MKE9NB4U & CZ-18BT1U)

inch (mm) (313)12-5/16

inch (mm) 22-5/8 (575) inch (mm) inch (mm) -

inch (mm) 24-13/16 (630) inch (mm)

Ib. (kg)

cu.ft (m

3

)

(625)24-19/32 (625)24-19/32

-

(18.7)41.3

-

(CS-MKE9NB4U)

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Heating: Indoor air temperature 70 °F DB

Outdoor air temperature 47 °F DB / 43 °F WB

Panel

(CZ-18BT1U)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

9

2-1-2. Indoor Unit CS-MKE12NB4U & CZ-18BT1U

Type

Voltage Rating

Total Capacity

BTU/h

kW

Air Circulation (Hi/Me/Lo) ft3/min (m3/h)

Performance

Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

235 (399) / 206 (350) / 194 (330)

V A

WPower Input

--

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube Wide tube

Wired Remote Controller (Option) CZ-RD515U

Semi-Concealed Type Indoor Unit

230V Single-Phase 60Hz

Cooling

11,900

3.5

4.26

0.11 17

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps

Washable, Anti-Mold

34 / 32 / 31 35 / 34 / 32

<230V>

Heating

13,600

4.0

268 (455) / 247 (420) / 224 (381)

-

187 to 253

0.13 19

-

Auto

R410A

Flare Type

1/4 (6.35) 3/8 (9.52)

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth 28-1/8 (714)

Weight Ib. (kg)

Shipping Volume

Net Shipping

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80 °F DB / 67 °F WB

Outdoor air temperature 95 °F DB / 75 °F WB

Indoor Unit

(CS-MKE12NB4U & CZ-18BT1U)

inch (mm) (313)12-5/16

inch (mm) 22-5/8 (575) inch (mm) inch (mm) -

inch (mm) 24-13/16 (630) inch (mm)

Ib. (kg)

cu.ft (m

3

)

(625)24-19/32 (625)24-19/32

-

(18.7)41.3

-

(CS-MKE12NB4U)

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Heating: Indoor air temperature 70 °F DB

Outdoor air temperature 47 °F DB / 43 °F WB

Panel

(CZ-18BT1U)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

10

Indoor Unit CS-MKE12NB4U & CZ-18BT1U

Type

Voltage Rating

Total Capacity

BTU/h

kW

Air Circulation (Hi/Me/Lo) ft3/min (m3/h)

Performance

Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

235 (399) / 206 (350) / 194 (330)

V A

WPower Input

--

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube Wide tube

Wired Remote Controller (Option) CZ-RD515U

Semi-Concealed Type Indoor Unit

208V Single-Phase 60Hz

Cooling

11,900

3.5

4.26

0.12 16

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps

Washable, Anti-Mold

34 / 32 / 31 35 / 34 / 32

<208V>

Heating

13,600

4.0

268 (455) / 247 (420) / 224 (381)

-

187 to 253

0.14 18

-

Auto

R410A

Flare Type

1/4 (6.35) 3/8 (9.52)

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth 28-1/8 (714)

Weight Ib. (kg)

Shipping Volume

Net Shipping

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80 °F DB / 67 °F WB

Outdoor air temperature 95 °F DB / 75 °F WB

Indoor Unit

(CS-MKE12NB4U & CZ-18BT1U)

inch (mm) (313)12-5/16

inch (mm) 22-5/8 (575) inch (mm) inch (mm) -

inch (mm) 24-13/16 (630) inch (mm)

Ib. (kg)

cu.ft (m

3

)

(625)24-19/32 (625)24-19/32

-

(18.7)41.3

-

(CS-MKE12NB4U)

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Heating: Indoor air temperature 70 °F DB

Outdoor air temperature 47 °F DB / 43 °F WB

Panel

(CZ-18BT1U)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

11

2-1-3. Indoor Unit CS-KE18NB4UW & CZ-18BT1U

Type

Voltage Rating

Total Capacity

BTU/h

kW

Air Circulation (Hi/Me/Lo) ft3/min (m3/h)

Performance

Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

341 (579) / 294 (500) / 253 (430)

V A

WPower Input

--

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube Wide tube

Wired Remote Controller (Option) CZ-RD515U

Semi-Concealed Type Indoor Unit

230V Single-Phase 60Hz

Cooling

17,500

5.15

4.89

0.15 22

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps

Washable, Anti-Mold

44 / 40 / 36 44 / 40 / 36

<230V>

Heating

20,400

6.0

383 (651) / 324 (551) / 265 (450)

-

187 to 253

0.19 27

-

Auto

R410A

Flare Type

1/4 (6.35) 1/2 (12.7)

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth 28-1/8 (714)

Weight Ib. (kg)

Shipping Volume

Net Shipping

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80 °F DB / 67 °F WB

Outdoor air temperature 95 °F DB / 75 °F WB

Indoor Unit

(CS-KE18NB4UW & CZ-18BT1U)

inch (mm) (313)12-5/16

inch (mm) 22-5/8 (575) inch (mm) inch (mm) -

inch (mm) 24-13/16 (630) inch (mm)

Ib. (kg)

cu.ft (m

3

)

(625)24-19/32 (625)24-19/32

-

(18.7)41.3

-

(CS-KE18NB4UW)

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Heating: Indoor air temperature 70 °F DB

Outdoor air temperature 47 °F DB / 43 °F WB

Panel

(CZ-18BT1U)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

12

Indoor Unit CS-KE18NB4UW & CZ-18BT1U

Type

Voltage Rating

Total Capacity

BTU/h

kW

Air Circulation (Hi/Me/Lo) ft3/min (m3/h)

Performance

Moisture Removal (High) Pints/h Available Voltage Range Running Amperes

341 (579) / 294 (500) / 253 (430)

V A

WPower Input

--

Electrical Rating

Controls / Temperature Control Control Unit Timer

IndoorFan Speeds

Airflow Direction (Indoor) Horizontal

Vertical Air Filter Refrigerant

Features

Operation Sound

dB-AIndoor : Hi/Me/Lo Refrigerant Tubing Connections Refrigerant inch (mm) Tube Diameter inch (mm)

Narrow tube Wide tube

Wired Remote Controller (Option) CZ-RD515U

Semi-Concealed Type Indoor Unit

208V Single-Phase 60Hz

Cooling

17,500

5.15

4.89

0.16 22

Microprocessor / I.C. Thermister

Wireless Remote Control Unit

24-Hour ON or OFF Timer, 1-Hour OFF Timer

Auto and 3 steps

Washable, Anti-Mold

44 / 40 / 36 44 / 40 / 36

<208V>

Heating

20,400

6.0

383 (651) / 324 (551) / 265 (450)

-

187 to 253

0.2 27

-

Auto

R410A

Flare Type

1/4 (6.35) 1/2 (12.7)

Dimensions & Weight (Indoor Unit)

Unit Dimensions Height

Width Depth

Package Dimensions Height

Width Depth 28-1/8 (714)

Weight Ib. (kg)

Shipping Volume

Net Shipping

Remarks: Rating conditions are:

Cooling: Indoor air temperature 80 °F DB / 67 °F WB

Outdoor air temperature 95 °F DB / 75 °F WB

Indoor Unit

(CS-KE18NB4UW & CZ-18BT1U)

inch (mm) (313)12-5/16

inch (mm) 22-5/8 (575) inch (mm) inch (mm) -

inch (mm) 24-13/16 (630) inch (mm)

Ib. (kg)

cu.ft (m

3

)

(625)24-19/32 (625)24-19/32

-

(18.7)41.3

-

(CS-KE18NB4UW)

11-5/32 (283)

11-13/32 (290)

Individual Unit

Body

22-5/8 (575)

35.3 (16)

41.9 (19)

4.59 (0.13)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Heating: Indoor air temperature 70 °F DB

Outdoor air temperature 47 °F DB / 43 °F WB

Panel

(CZ-18BT1U)

1-9/16 (40)

24-19/32 (625) 24-19/32 (625)

4-1/8 (105)

26-3/16 (665)

26-11/16 (678)

6.0 (2.7)

7.7 (3.5)

1.65 (0.04)

13

2-2. Major Component Specifications

2-2-1. Indoor Unit

Indoor Unit (Body) CS-MKE9NB4U

Control PCB

Part No.

Controls

Control Circuit Fuse

Fan

Type Q'ty ... Dia. and Length

Fan Motor

Type Model ... Q'ty No. of Poles

Rough Measure RPM (Cool / Heat)

Rating Voltage / Nominal Output

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over- Current Protection Over- Heat Protection

Run Capacitor Micro F

inch (mm)

Ohm

VAC

CB-CS-MKE9NB4U

Microprocessor

250V 3A

Turbo

1 ... D12-5/8 / L5-3/4 (D322/L147)

DC Motor

SIC-62FW-D866-2 ... 1

8

440 / 490

DC280V / 23W

-

Internal Controller

Yes Yes

-

Drain Pump

Model ... Q'ty

Rating Voltage, Hz

(Ambient Temp. 68 °F (20 °C))

Safety Device

Heat Exchanger Coil

Coil

Rows Fins per inch

Input

Type Open

W

Ohm

°F (°C)

2

(m2)

ft

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

PLD-12230ST-1 ... 1

AC208 to 240V, 60Hz

Aluminum Plate Fin / Copper Tube

Indoor Unit (Panel) CZ-18BT1U

Flap Motor

Type Stepping Motor

Model ... Q'ty

Rating

Coil Resistance Ohm

(Ambient Temp. 77 °F (25 °C))

Each Pair of Terminal : 380 +/- 7%

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

MP24ZN-12V ... 2

10.8

333 +/- 10%Coil Resistance

Thermal Fuse

293 (145)

2

18.1

2.94 (0.273) Face Area

DC 12V

14

Indoor Unit (Body) CS-MKE12NB4U

Control PCB

Part No.

Controls

Control Circuit Fuse

Fan

Type Q'ty ... Dia. and Length

Fan Motor

Type Model ... Q'ty No. of Poles

Rough Measure RPM (Cool / Heat)

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over- Current Protection Over- Heat Protection

Run Capacitor Micro F

inch (mm)

Ohm

VAC

CB-CS-MKE12NB4U

Microprocessor

250V 3A

Turbo

1 ... D12-5/8 / L5-3/4 (D322/L147)

DC Motor

SIC-62FW-D866-2 ... 1

8

470 / 520

DC280V / 23WRating Voltage / Nominal Output

-

Thermal Fuse

Yes Yes

-

Drain Pump

Model ... Q'ty

Rating Voltage, Hz

Input

W

PLD-12230ST-1 ... 1

AC208 to 240V, 60Hz

Ohm

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Open

°F (°C)

Heat Exchanger Coil

Coil

Aluminum Plate Fin / Copper Tube

Rows Fins per inch

2

(m2)

ft

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit (Panel) CZ-18BT1U

Flap Motor

Type Stepping Motor

Model ... Q'ty

Rating

Coil Resistance Ohm

(Ambient Temp. 77 °F (25 °C))

Each Pair of Terminal : 380 +/- 7%

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

MP24ZN-12V ... 2

10.8

333 +/- 10%Coil Resistance

Thermal Fuse

293 (145)

2

18.1

2.94 (0.273) Face Area

DC 12V

15

Indoor Unit (Body) CS-KE18NB4UW

Control PCB

Part No.

Controls

Control Circuit Fuse

Fan

Type Q'ty ... Dia. and Length

Fan Motor

Type Model ... Q'ty No. of Poles

Rough Measure RPM (Cool / Heat)

Coil Resistance

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Over- Current Protection Over- Heat Protection

Run Capacitor Micro F

inch (mm)

Ohm

VAC

CB-CS-KE18NB4U

Microprocessor

250V 3A

Turbo

1 ... D12-5/8 / L5-3/4 (D322/L147)

DC Motor

SIC-62FW-D866-2 ... 1

8

650 / 720

DC340V / 20WRating Voltage / Nominal Output

-

Internal Controller

Yes Yes

-

Drain Pump

Model ... Q'ty

Rating Voltage, Hz

Input

W

PLD-12230ST-1 ... 1

AC208 to 240V, 60Hz

Ohm

(Ambient Temp. 68 °F (20 °C))

Safety Device

Type Open

°F (°C)

Heat Exchanger Coil

Coil

Aluminum Plate Fin / Copper Tube

Rows Fins per inch

2

(m2)

ft

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Indoor Unit (Panel) CZ-18BT1U

Flap Motor

Type Stepping Motor

Model ... Q'ty

Rating

Coil Resistance Ohm

(Ambient Temp. 77 °F (25 °C))

Each Pair of Terminal : 380 +/- 7%

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

MP24ZN-12V ... 2

10.8

333 +/- 10%Coil Resistance

Thermal Fuse

293 (145)

2

18.1

2.94 (0.273) Face Area

DC 12V

16

2-3. Other Component Specifications

Indoor Unit CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U

• Indoor air temp sensor

(Model:KTEC-35-S98)

10

9

8

7

6

5

Resistance (k ohm)

4

3

2

1

0

50

59 68 77 86 95 104

(10) (15) (20) (25) (30) (35) (40)

Temperature °F (°C)

• Indoor heat exchanger sensor

(Model:PT2M-51H-S3)

200

180

160

140

120

100

Resistance (k ohm)

80

60

40

20

0

32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70)(80) (90)

Temperature °F (°C)

17

3. DIMENSIONAL DATA

Indoor Unit CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U

7-11/16

8

4-29/32

A View

1-3/16

21/32

3-1/8

AA

(534)

23-5/8 (600)

21-1/32

Suspension bolt pitch

Ceiling opening dimensions

Center of

panel

7

(flared)

1/4" (flared)

dia.

dia. 1/2"

23-5/8 (600)

21-1/32 (534)

Ceiling opening dimensions

Suspension bolt pitch

12-7/16

12-7/8

5

22-5/8 (575)

6-5/16 6-11/16

2-3/32

1-25/32

1-3/16 (30)

11-5/32 (283)

8-15/32

3

6

1-25/32

4-19/32

Less than 31/32Less than 31/32

The length of the suspension

2

14-3/32 (358)

24-19/32 (625)

2

25/32

bolts should be selected so that

there is a gap of 1-3/16" or

the ceiling (21/32" or more

below the lower surface of the

main unit), as shown in the

figure at right. If the suspension

bolts is too long, it will contact

the ceiling panel and the unit

cannot be installed.

24-19/32 (625)

13-5/32 (334)

2

1

5-9/16

2-3/4 1-9/32

2

(liquid tube)

Air intake

Discharge outlet

Refrigerant tubing

1

2

3

(gas tube)

22-5/8 (575)

Refrigerant tubing

Drain tube connection port VP20 (outer dia. 1")

Power supply port

Suspension bolt hole (4 - 1/2" x 1-1/8" hole)

Fresh air intake duct connection port (dia. 3-7/8")

4

5

6

7

8

18

2-3/32

3-5/8

7-23/32

1-27/32 1-3/32

Unit : inch (mm)

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U

Indoor unit

O.D. 3/8" (9.52 mm)

Heat exchanger

Strainer

Indoor Unit CS-KE18NB4UW & CZ-18BT1U

Indoor unit

Heat exchanger

Strainer

O.D. 1/4" (6.35 mm)

O.D. 1/2" (12.7 mm)

O.D. 1/4" (6.35 mm)

Cooling cycle

Heating cycle

Cooling cycle

Heating cycle

19

5. ELECTRICAL DATA

5-1. Electric Wiring Diagrams

Indoor Unit CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U

FLAP (R)

FLAP (W)

IND LAMP ASSY

COIL-1

BLK

2

BLK

1

COIL-1

WHT BRN

BLU

ORG

BLK

2P (RED)

2

1

ROOM

2P (YEL)

3

FS

1

3P (RED)

5

4

3

FLAP

2

5P (WHT)

1

7

6

5

4

IND

3

7P (WHT)

2

1

4

3

2

1

4P (WHT)

8FA2-5250-46900-2

ROOM

BLK

VLT

BLU PNK YEL

ORG RED BRN

GRN BLK

WHT

BLK

BLK BLK

FLOAT SWITCH

6

5

4

3

2

1

THERMISTOR

ORG

5

BLU

4

BRN

3

WHT

2

BLK

1

WHT

5

BRN

4

BLU

3

ORG

2

BLK

1

10

9

8

7

6

5

4

3

2

1

TERMINAL BASE

2 3

1

TO OUTDOOR UNIT

BRN

DP

DRAIN PUMP

FAN MOTOR

GND

RED

FM

YEL

ORG

CORE

FERRITE

VLT

BLU

PNK

GRN/YEL

YEL/(RED) YEL/(RED)

BLU YEL

WHT

BLK

RED

WHT

BLK

7

6

5

4

3

2

SERIAL

2P (WHT)

1

1 1

2 2

RED

GRN

WHT

1 1

2 2

7

6

5

4

3

2

1

3

1

PWM/POW 7P (RED) PWM/POW 7P (RED) RC

DP

SERIAL

2P (WHT)

3P (BLU)

3P (RED)

BOX BOX

CONTROLLER CONTROLLER

DCM

6P (BLU)

6P (WHT)

1 2 3 4 5 6

AC1 AC2 SI

20

6. MAINTENANCE

6-1. Disassembly Procedure

To avoid electrical shock hazard, be sure to disconnect power before

Warning

6-1-1. Remove the air intake grill.

(1) Slide the 2 latches each to the corresponding arrow direction. (Fig. 1 and Fig. 2)

Open downward the air intake grill located on the latch side.

(2) Undo the air intake grill drop preventive hook. (Fig. 3)

Undo the 2 hinges for the grill and remove the air intake grill.

attempting to disassemble the unit. When a footstool, etc. is used for disassembling the indoor unit, be careful not to fall down. If you fall down, you might be injured seriously.

Latch

Hinge

Latch

Air intake grill

Fig.1

Hinge

Fig.2 Fig.3

6-1-2. Disconnect the connectors in the control box.

(1) Remove the 2 screws and remove the control box cover. (Fig. 4)

(2) Disconnect the connectors CN04 (FLAP 5P), CN12 (RC 4P) and CN13 (IND 7P). (Fig. 5)

Control PCboard

Hook

CN13

CN04

CN12

Screw Control box cover

Fig.4 Fig.5

21

6-1-3. Remove the ceiling panel.

(1) Open the clamp (4 locations) and remove the 2 lead wires from the clamps. (Fig. 6)

(2) Remove the 4 screws fixing the corner cover (at 3 locations) and indicator cover (at 1 location). (Fig. 6)

(3) Press the center 1 of the cover and remove the cover with the section 2 pulled down. (Fig. 7)

(4) Remove the strap (3 locations) from the hook on the ceiling panel. (Fig. 8)

NOTE

(5) Remove the bolt (4 locations) with a washer and remove the ceiling panel. (Fig. 9)

There is no strap on the indicator cover.

Indicator cover

Screw

Clamp

Corner cover

Lead wire

Clamp

Corner coverCorner cover

Pull down section 2.

Fig.6 Fig.7

Bolt

Cover

Center 1

Strap

Remove the strap from the hook.

Bolt

Fig.8 Fig.9

22

6-1-4. Remove the indoor air temperature sensor.

(1) Disconnect the connector CN08 (ROOM 2P) in the control box and remove the indoor air temperature

sensor. (Fig. 10)

Indoor air temperature sensor

Fig.10

6-1-5. Remove the power box and control box.

(1) Remove a screw and remove the terminal cover. (Fig. 11)

(2) Remove the 2 screws and remove the power box cover. (Fig. 11)

(3) Disconnect the power lines (No. 1 and No. 2) / signal line (No. 3) and ground cable from the terminals in

the power box. (Fig. 12)

CN08

Terminal cover

Screw

Power box cover

Ground cable

Fig.11

1

2

3

Terminal

Fig.12

23

Power lines / Signal line

(4) Disconnect the connector CN07 (DP 2P) in the power box. (Fig. 13)

Remove a screw and disconnect the ground cable. (Fig. 13)

(5) Disconnect the connector CN03 (DCM 6P) in the power box. (Fig. 14)

(6) Remove the 4 screws and remove the power box. (Fig. 14)

(7) Disconnect the connectors CN06 (FS 3P) and CN09 (COIL-1 2P) in the control box. (Fig. 15)

(8) Remove the 2 screws and remove the control box. (Fig. 15)

Screw

Ground cable

Screw

12 3

CN07

Fig.13

Screw

CN03

Fig.14

Screw

CN09

Screw

CN06

Fig.15

24

NOTE

For the removal of the following components, perform any work after removing the indoor

unit (main body) from the ceiling.

Main body lower section Heat exchanger sensor Drain pump

Float switch Turbo fan Fan motor

Heat exchanger

1. Perform the work after draining the water to prevent the water leakage from the drain pan.

• Put a bucket, etc., under the drain cap and remove the drain cap to drain the water.

(Fig. 16)

2. Refer to the installation instructions for recovery of refrigerant or removal of the power

cable or tubing.

6-1-6. Remove the main body lower section.

(1) Remove the 4 screws. (Fig. 16)

(2) Remove the 2 screws. (Fig. 17)

(3) Disconnect the connector CN03 (DCM 6P) in the power box. (Fig. 18)

(4) Lift the main body lower section and remove it from the main body upper section.

Screw

Drain cap

Main body lower sectionMain body lower section

Screw

Fig.16

Main body lower section

Main body upper section

Screw

CN03

Fig.18Fig.17

25

6-1-7. Remove the heat exchanger sensor.

(1) Remove the heat exchanger sensor from the sensor holder. (Fig. 19)

Fig.19

6-1-8. Remove the drain pump and float switch.

(1) Remove the 2 screws (Fig. 20)

(2) Loosen the clamp and disconnect the drain hose from the drain pump. (Fig. 20)

(3) Remove the drain pump from the main body upper section. (Fig. 20)

(4) Remove a nut and remove the float switch. (Fig. 21)

Heat exchanger sensor

Holder

Drain pump

Screw

Float switch

Nut

Drain hose

Clamp

Fig.20 Fig.21

26

6-1-9. Remove the turbo fan and fan motor.

(1) Remove a nut and remove the turbo fan. (Fig. 22)

(2) Remove the 2 screws and 3 nuts, and remove the fan motor. (Fig. 23)

Turbo fan

Fig.22 Fig.23

6-1-10. Remove the heat exchanger.

(1) Remove the 3 screws. (Fig. 24)

(2) Remove the 3 screws. (Fig. 25)

(3) Remove the heat exchanger from the main body upper section with the heat exchanger lifted.

Nut

Screw Nut

Fan motor

ScrewHeat exchanger

Screw

Fig.24 Fig.25

27

Main body upper section

Screw

7. FUNCTIONS

7-1. Operation Functions

Emergency operation SENSOR DRY

Emergency operation is available when the remote controller malfunctions, has been lost, or otherwise cannot be used.

To operate the system, press the OPERATION button,

which is also used as the receiver, below the unit display.

Each time this button is pressed, the OPERATION lamp changes color to indicate the type of operation. Select the desired type of operation.

COOL HEAT STOP

(GREEN) (RED) (Lamp Off)

• The set temperature is 4°F(2°C) below the detected room temperature in the case of cooling operation, and 4°F(2°C) above the room temperature in the case of heating operation. The flap and fan speed settings are AUTO.

AUTO cooling/heating operation

Selecting the operation mode

• When AUTO mode is selected, the microprocessor calculates the difference between the set temperature and the room temperature, and automatically switches to Cooling or Heating mode.

Room temp. Set temp. COOL Room temp. Set temp. HEAT

• As shown by the example in the figure below, with AUTO cooling/heating operation, the mode changes between Heating and Cooling mode according to changes in the relationship between the current room temperature and the set temperature.

During DRY operation, the system adjusts the room temperature and fan speed according to the conditions in the room, in order to maintain a comfortable room environment.

SENSOR DRY operation

• DRY operation is as shown in the figure below.

Load

COOL zone

A zone

B zone

Conditions are monitored at all times when the room temperature is below 59°F(15°C).

DRY A

The compressor operation frequency varies. The indoor fan operates with 1/f fluctuation.

DRY B

The compressor operates at a low operating frequency. The indoor fan operates with 1/f fluctuation.

Monitor

• Monitoring operation takes place when the room temperature is below 59°F

(15°C), or more than 5°F(3°C) below the set

temperature.

• When the monitoring range is entered, the compressor stops, and the indoor fan operates with 1/f fluctuation.

Example Example of operation in AUTO mode with the set room temperature at 74°F(23°C).

Room temp.

Set temp.

Zone A

Zone B

Zone C

74

Zone C

Zone B

Zone A

Compressor

Operation mode

More than

1 hour

ON ON ON

OFF OFF

Within

1 hour

HeatingCooling Cooling

PAM- control

• In order to further improve inverter performance, control is switched between PWM control at low operation speeds, and PAM control at high operation speeds, making the most effective use of power.

28

HIGH POWER

NIGHT SETBACK

This function acts to raise the power but keeps the AC system in the same operating mode. This function is set with the HIGH POWER button on the remote controller. (It can be set regardless of the temperature and fan speed settings.)

HIGH POWER operation from remote controller The unit operates at maximum output for 30 minutes,

regardless of the desired temperature.

The fan speed is 1 step above "High."

Frequency

MAX

0

30 min. 5 min.

Start End

Time

NOTE

When HIGH POWER operation ends, the unit operates at low

Hz for 5 minutes, regardless of the thermostat OFF conditions.

When in DRY mode, operation is in the cooling zone.

Lamp colors

OPERATION lamp

HEAT operation Red DRY operation Orange COOL operation Green FAN operation Green DEFROSTING operation Red and Orange alternately

OPERATION lamp Green

TIMER lamp Green

HIGH POWER lamp Green

When NIGHT SETBACK operation is set, the temperature and

fan speed settings will be adjusted automatically to allow comfortable sleep.

When NIGHT SETBACK operation is set, " mark" appears on

the remote controller. The main unit display lamp also becomes dimmer.

COOL and DRY modes

When the night setback mode is selected, the air conditioner automatically raises the temperature setting 2°F(1°C) when 30 minutes have passed after the selection was made, and then another 2°F(1°C) after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.

Setting temperature

Press the NIGHT SETBACK button

2°F(1°C)

30 min. 30 min.

Time

HEAT mode

When the night setback mode is selected, the air conditioner automatically lowers the temperature setting 4°F(2°C) when 30 minutes have passed after the selection was made, and then another 4°F(2°C) after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle heating is needed.

Setting temperature

Press the NIGHT SETBACK button

4°F(2°C)

30 min. 30 min.

4°F(2°C)

Time

Timer backup

Operation stops if there are no operator controls for 25 hours or

longer after unit operation switched from OFF to ON by use of ON timer operation.

29

7-2. Protective Functions

Overload prevention during heating

During HEAT operation, the temperature of the indoor heat exchanger is used to control the frequency and lessen the load on the compressor before the protective device is activated.

Approx.

127 (53)

Approx.

117 (47)

temperature °F(°C)

Indoor heat exchanger

a.

Area: Automatic capacity control

b.

When Point A has been exceeded, the operation frequency is

A

abc d

Indoor heat exchanger

A. Control start B. Control end

B

reduced by a certain proportion.

c.

Area: Frequency increase is prohibited.

d.

At Point B and below, overload prevention is ended and

control is the same as in the a area.

Freeze prevention

During COOL or DRY operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below.

1.

Freeze-prevention operation is engaged when the

temperature of the indoor heat exchanger is below 43°F(6°C).

2.

Restart after freeze-prevention operation occurs when the

temperature of the indoor heat exchanger reaches 46°F(8°C) or above.

46

(8)

43

(6)

36

(2)

temperature °F(°C)

Indoor heat exchanger

a.

Area: Automatic capacity control

b.

When the temperature drops below Point A, the operation

*

A

abcd

frequency is reduced by a certain proportion.

c.

Area: Frequency increase is prohibited.

d.

When the temperature reaches Point C or above, freezing

prevention is ended and control is the same as in the a area.

C

B

Cold-air prevention during heating

During heating, the fan speed is set to "LL" (very low) or stopped. As the temperature of the indoor heat exchanger rises, the fan speed is changed to the set speed.

Fan speed [rpm] Outdoor air temp.

The fan speed is increased depending on the outside air temperature. (*1)

H +

H

LL

Stopped

At stability of operation

77

(25)86(30)

Indoor heat exchanger

temperature °F(°C)

At start of operation

TC1 100

TO1

TO2

TO3

(38)

NOTE

• The fan speed is forcibly changed to "LL" beginning 30 seconds after the thermostat turns OFF.

• At stability of operation refers to operation when the room temperature has approached the set temperature.

• When HEAT operation starts, the indoor fan is stopped until the temperature of the indoor heat exchanger reaches 68°F(20°C) or higher, or until the room temperature reaches 59°F(15°C) or higher.

*1 It is applied only to CS-MKE9NB4U and CS-MKE12NB4U.

This function is enabled when the automatic operation is being performed and the "Automatic Fan Speed" has been selected. The fan speed might be increased during the automatic operation. However, it is not the abnormal condition.

TC1 : CS-KE18NB4UW 104°F (40°C)

CS-MKE9NB4U, CS-MKE12NB4U 91°F (33°C) TO1 : 35.6°F (2°C) or less TO2 : 35.6°F (2°C) to 53.6°F (12°C) TO3 : 53.6°F (12°C) or more

* When the temperature drops to below 36°F(2°C)

(continuously for 2 minutes or longer), the compressor stops. Once the freeze condition is detected, the air conditioner will work less than the maximum frequency until it is turned off.

30

8. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)

8-1. Precautions before Performing Inspection or Repair

After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.

High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be careful not to touch any electrified parts before the controller LED (red) turns OFF.

If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.

8-2. Method of Self-Diagnostics

Follow the procedure below to perform detailed trouble diagnostics.

NOTE

1: If the operation lamp blinks every 0.5 seconds immediately when the

power is turned ON, there is an external ROM (OTP data) failure on the indoor circuit board, or a ROM socket insertion problem, or the ROM has not been installed.

2: The failure mode is stored in memory even when the power is not ON.

Follow the procedure below to perform diagnostics.

PROCEDURE

After turning on power to the air conditioner, use the remote controller and follow the steps below to execute self-diagnostics.

Step 1: Press and hold the remote controller HIGH POWER button and 1

HR TIMER button. Then, press and hold the ACL (reset) button with a pointed object such as the tip of a pen. After 5 seconds, release ACL button first, then release HIGH POWER and 1 HR TIMER buttons, "oP-1" (test run) appears, blinking in the remote controller clock display area.

Step 2: Next, press the 1 HR TIMER button once to change the display

from "oP-1" to "oP-3" (self-diagnostics). (The display continues to blink.)

Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.

< Clock display >

Test run mode

Self-diagnostics mode

ON/OFF operation button

HIGH POWER button

1HR. TIMER button

• The self-diagnostics function utilizes the 3 indicator lamps on the main unit, in combinations of ON lamps, blinking lamps, and OFF lamps, to report the existence of sensor trouble or a protective operation. (The lamps blink or remain ON for 5 seconds, then turn OFF for 2 seconds.) Self-diagnostics is completed when the buzzer sounds 3 short beeps.

• A maximum of 3 self-diagnostics reports are displayed, for 5 seconds each, beginning with the most recent report. Following this display the lamps turn OFF. In order to view the self-diagnostics results again, press the ON/OFF button again.

• The 3 lamps remain OFF if no trouble has occurred.

<IMPORTANT> After self-diagnostics is completed, be sure to press the

ACL (reset) button to return to normal mode. The air conditioner will not operate if this is not done.

31

ACL (Reset) button

(1) Self-diagnostics Lamps

INDOOR UNIT

OPERATION button

OPERATION lamp

TIMER lamp

HIGH POWER lamp

REMOTE CONTROL receiver

Since the indications cover various units, the corresponding parts listed below may not be present in some models.

INDICATION ON INDOOR UNIT

OPERATION

TIMER

HIGH POWER

....

OFF

CODE DIAGNOSIS CONTENTS POSSIBLE MALFUNCTION

S01

ROOM TEMP. SENSOR TROUBLE

I/D HEAT EXCHANGER TEMP.

S02

SENSOR TROUBLE

COMPRESSOR TEMP. SENSOR

S04

TROUBLE

O/D HEAT EXCHANGER TEMP.

S05

SENSOR TROUBLE

O/D AIR TEMP. SENSOR TROUBLE

S06

O/D CURRENT SENSOR ERROR

S07

I/D-O/D COMMUNICATION TROUBLE

E01

(SERIAL COMMUNICATION TROUBLE)

HIC CIRCUIT TROUBLE

E02

POWER TR CIRCUIT TROUBLE

O/D UNIT EXTERNAL ROM

E03

TROUBLE

E04

CURRENT PEAK CUT

PAM CIRCUIT TROUBLE

E05

ACTIVE CIRCUIT TROUBLE

COMPRESSOR DISCHARGE TEMP.

E06

OVERHEATING PREVENTION

I/D FAN OPERATION TROUBLE

E07

4-WAY VALVE SWITCHING TROUBLE

E08

ZERO-CROSS TROUBLE

GAS-LOSS PREVENTION

E09

DC COMPRESSOR DRIVE

E10

CIRCUIT TROUBLE

E11

O/D DC FAN OPERATION TROUBLE

O/D SYSTEM COMM FAILURE, OLR OPERATION, O/D POWER

E12

OPEN PHASE, O/D FREEZING

FREEZING-PREVENTION OPERATION

E13

(1) OPEN OR SHORT CIRCUIT IN SENSOR (2) POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT TERMINAL PRESS-FIT LOCATION. (3) I/D PCB FAILURE (I/D = INDOOR)

(1) OPEN OR SHORT CIRCUIT IN SENSOR (2) POOR CONTACT AT CONNECTOR OR OPEN

CIRCUIT AT TERMINAL PRESS-FIT LOCATION

(3) O/D PCB FAILURE (O/D = OUTDOOR)

O/D PCB FAILURE

(1) MIS-WIRING (2) AC POWER FAILURE (3) BLOWN FUSE (4) POWER RELAY FAILURE (5) I/D OR O/D PCB FAILURE (6) O/D FAN MOTOR FAILURE (7) REACTOR FAILURE (8) HIGH-PRESSURE SW FAILURE (9) OLR FAILURE (10) MAGNETIC COIL FAILURE (1) HIC OR POWER TR FAILURE (2) O/D FAN NOT OPERATING (3) INSTANTANEOUS POWER STOPPAGE (4) SERVICE VALVE NOT OPENED (5) O/D FAN BLOCKED (6) CONTINUOUS OVERLOAD OPERATION (7) COMPRESSOR FAILURE (8) O/D PCB FAILURE

(1) EXTERNAL ROM DATA FAILURE (2) O/D PCB FAILURE

(1) INSTANTANEOUS POWER STOPPAGE (2) HIC OR POWER TR FAILURE (3) O/D PCB FAILURE

(1) O/D PCB FAILURE (2) O/D POWER VOLTAGE TROUBLE

(1) ELECTRIC EXPANSION VALVE FAILURE (2) CHOKED CAPILLARY TUBE (3) INSUFFICIENT GAS (4) CONTINUOUS OVERLOAD OPERATION (5) O/D FAN NOT OPERATING (6) O/D PCB FAILURE

(1) FAN MOTOR FAILURE (2) CONNECTOR CONTACT FAILURE (3) I/D PCB FAILURE

(1) 4-WAY VALVE FAILURE (HEAT PUMP MODEL ONLY) (2) O/D PCB FAILURE

(1) SERVICE VALVE NOT OPENED (2) INSUFFICIENT GAS

(1) OPEN PHASE (2) O/D PCB FAILURE

(1) FAN MOTOR FAILURE (2) CONNECTOR CONTACT FAILURE (3) O/D PCB FAILURE

(1) MIS-WIRING (2) BLOWN FUSE (3) POWER RELAY FAILURE (4) O/D PCB FAILURE (5) COMPRESSOR FAILURE

(1) I/D FAN SYSTEM TROUBLE (2) INSUFFICIENT GAS (3) OPERATION AT LOW TEMPERATURE

....

BLINKING

....

ON

TIMER

LAMP

BLINKING (3 SEC. INTERVAL)

FLOAT SWICTH (FS) IS ACTIVED.

(1) DRAIN PUMP FAILURE (2) FS FAILURE (3) CHOKED DRAIN HOSE

32

8512-5261-99100-1

(2) If the self-diagnostics function fails to operate

No indicators illuminate and the

•

Check the indoor unit.

indoor fan does not rotate. Check the power voltage.

•

Is the fuse blown?

Normal

Replace the circuit

Replace the controller.

board or the fuse.

8-3. Checking the Indoor and Outdoor Units

(1) Checking the indoor unit

ControlNo. Check items (unit operation)

•

Use the remote controller to operate the

1

unit in "TEST run" mode. To determine whether the mode is currently in "TEST run" mode, check the 3 indicator lamps on the unit. If all 3 are blinking, the current mode is "TEST run."

If there are no problems with the above, then check the outdoor unit. For the "Test run" procedure, refer to the Appendix B "Installation Instructions".

The rated voltage must be present between inter-unit wirings 1 and 2.

•

Connect a 5 k ohm resistor between inter-unit wirings 2 and 3. When the voltage at both ends is measured, approximately 12 to 15V DC must be output and the multimeter pointer must bounce once every 8 seconds. Or instead of measuring the voltage, you can insert an LED jig and check that the LED flickers once every 8 seconds.

Blown

(2) Checking the outdoor unit

ControlNo. Check items (unit operation)

Apply the rated voltage between outdoor

1 The control panel LED (red) must illuminate.

unit terminals L and N.

Short-circuit the outdoor unit COM terminal

2 The compressor, fan motor and 4-way valve must all turn on.

to the T-RUN terminal.

If there are no problems with the above, then check the indoor unit.

Using the TEST/T-RUN terminals

•

TEST/T-RUN terminals

T-RUN : Test run (compressor and fan motor turn ON). TEST/MV : Compresses time to 1/60th (accelerates

operation by 60 times faster than normal).

(TEST)/MV T-RUN COM

33

(3) Serial Communication Error Identification Procedure

If the lamps on the main body show the following conditions after the completion of self-diagnostics, a communication error between the indoor unit and outdoor unit might be considered. In such a case, identify the breakdown section by using the following procedure.

NOTE

Condition

Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure.

Lamp TimerOperation :Off

High Power

: Blinking

E01

: Illuminated

E12

< Before the Operation >

For terminal strip short circuit work or inter-unit wiring removal, turn off the power

Warning

to avoid an electric shock. Release the terminal strip short circuit after the completion of self-diagnostics.

Do not perform the short-circuit work between any other terminals except for

Caution

specified ones on the specified terminal strip. If such work is performed between the incorrect terminals, the unit might be broken.

< Convenient Tool for Short-Circuit Work ( for example ) >

Alligator Clip

Cable

Alligator Clip

< Check Items before Troubleshooting Serial Communication Start >

After confirming that the following errors do not exist, start the "Troubleshooting Serial Communication" in "Condition: E01 and E12".

Prohibit

1. Mis -wiring (inter-unit cable, etc.)

2. AC power failure

3. Blown fuse

4. Power Relay failure

5. Outdoor Fan Motor failure (defective insulation, etc.)

(3-1) Condition: E01

Troubleshooting Serial Communication

Is the voltage of about DC12V

or more given between the terminals

2 and 3 on the outdoor unit terminal strip

(Serial Communication Line) ?

(Fig. 1)

Yes

A

( Continued to the next page A. )

6. Reactor failure (defective insulation, etc.)

7. High-Pressure Switch failure

8. Overload Relay failure

9. Magnetic Coil failure (defective insulation, short-circuit, etc.)

10. Compressor failure (defective insulation, etc.)

+-

V

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 1

1. Turn OFF the power and wait until the power lamp (LED)

No

of the outdoor unit controller is turned OFF.

2. Disconnect the cable from the terminal 3 on the indoor unit terminal strip. (Fig. 2)

3. Turn ON the power.

( Continued to the next page B. )

1 2 43 5 6

1 2 3

Indoor Unit

-

B

Outdoor Unit

Power

V

+

Fig. 2

34

( Continued from the previous page A. )

A

( Continued from the previous page B. )

B

Defect or connection error

in the inter-unit cable

1. Turn OFF the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF.

2. Short-circuit between the terminals 2 and 3 on the outdoor unit terminal strip. (Fig. 3)

1. Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation start.

What is the latest self-diagnosis result ?

Yes

Condition: E12

Is the voltage of about DC22V to 24V given between the terminals

2 and 3 on the indoor unit terminal strip

(Serial Communication Line) ?

(Fig. 2)

No

Defect in the indoor unit

P.C. board

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 3

Defect in the outdoor unit

P.C. board.

Condition: E01

1. Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF.

2. Remove the short-circuit between the terminals 2 and 3 on the outdoor unit terminal strip.

3. Disconnect the cable from the terminal 3 on the indoor unit terminal strip. (Fig. 4)

Short-circuit between the terminals 2 and 3 on the indoor unit terminal board. (Fig. 5)

1. Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation start.

What is the latest self-diagnosis result ?

Condition: E01

1 2 43 5 6

1 2 3

Indoor Unit

Condition: E12

Outdoor Unit

Power

Fig. 4

Defect or connection error

in the inter-unit cable

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 5

Defect in the indoor unit

P.C. board

35

(3-2) Condition: E12

Troubleshooting Serial Communication

1. Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF.

2. Disconnect the cable from the terminal 3 on the Outdoor unit terminal strip. (Fig. 6)

1. Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation start.

What is the latest self-diagnosis result ?

Condition: E12

1. Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF.

2. Disconnect the cable from the terminal 3 on the indoor unit terminal strip. (Fig. 7)

1. Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit.

2. Perform the self-diagnosis five seconds after the operation start.

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 6

Condition: E01

Defect in the outdoor unit

P.C. board

Outdoor Unit

1 2 43 5 6

Power

1 2 3

Indoor Unit

Fig. 7

What is the latest self-diagnosis result ?

Condition: E12

Defect in the indoor unit

P.C. board

Condition: E01

36

Defect in the inter-unit

cable

8-4. Trouble Diagnosis of Fan Motor

8-4-1. Indoor Fan Motor

This indoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. To perform diagnosis, operate the unit in cooling mode with indoor fan speed "High". Next, make sure that the indoor unit receive the signals from the remote controller when the ON/OFF operation button is pressed.

Important:

[Trouble symptom 1] The fan does not stop when the unit stops. Indoor unit controller trouble.

[Trouble symptom 2] The fan motor does not rotate when the unit is operating.

(Diagnostic procedure)

(Diagnostic results)

(Reference) DC motor connector pin arrangement

(A) Turn OFF the power before connecting or disconnecting the motor connectors. (B) When performing voltage measurement at the indoor controller connector for (3) in the table

below, the DC motor will trip and voltage output will stop approximately 1 minute after operation is started. For this reason, to measure the voltage again, turn OFF the unit once using the remote controller, and then start the air conditioner again.

* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the indoor

unit controller (3 locations).

Measurement location

(1) Vm-Gnd: Between pin 1 and pin 3 (2) Vcc-Gnd: Between pin 4 and pin 3 (3) Vs-Gnd: Between pin 5 and pin 3

All of the above measured values are normal. Fan motor trouble (Replace the motor.) Any one of the above measured values is not normal. Indoor unit controller trouble (Replace the controller .)

Pin 1: Vm (red) Pin 2: Not used Pin 3: Gnd (black) Pin 4: Vcc (white) Pin 5: Vs (yellow) Pin 6: PG (blue)

Fluctuation between DC 1.8V to 5.7V

Normal value

DC 280V to 340V

DC 15V +/- 10%

[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor

unit operates. (There is trouble in the system that provides feedback of motor rotation speed from the motor to the indoor unit controller.)

[Trouble symptom 4] Fan motor rotation speed does not change during indoor unit operation.

[Trouble symptom 5] Fan motor rotation speed varies excessively during indoor unit operation.

(Remedy for symptom 3 to 5)

It is not possible to identify whether the trouble is indoor unit controller trouble or motor trouble. Therefore, first replace the indoor unit controller, then (if necessary) replace the DC motor.

37

8-5. Noise Malfunction and Electromagnetic Interference

An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices.

A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these effects may still occur. Please pay attention to the points listed below.

(1) Noise malfunction

This refers to the application of high-frequency noise to the signal wires, resulting in abnormal signal pulses and malfunction.

Locations most susceptible to noise

1. Locations near broadcast stations where there are strong electromagnetic waves

2. Locations near amateur radio (short wave) stations

3. Locations near electronic sewing machines and arc-welding machines

Trouble

Either of the following trouble may occur.

1. The unit may stop suddenly during operation.

2. Indicator lamps may flicker.

(The fundamental concept is to make the

system less susceptible to noise.)

distance from the noise source. -

1. Use shielded wires.

2. Move unit away from the noise source.

Correction

- Insulate for noise or

(2) Electromagnetic interference

This refers to noise generated by high-speed switching of the microcomputer and compressor. This noise radiates through space and returns to the electric wiring, affecting any wireless devices (televisions, radios, etc.) located nearby.

Locations most susceptible to noise

1. A television or radio is located near the A/C and A/C wiring.

2. The antenna cable for a television or radio is located close to the A/C and A/C wiring.

3. Locations where television and radio signals are weak.

Trouble

1. Noise appears in the television picture, or the picture is distorted.

2. Static occurs in the radio sound.

1. Select a separate power source.

2. Keep the A/C and A/C wiring at least 1 meter away from wireless devices and antenna cables.

3. Change the wireless device’s antenna to a highsensitivity antenna.

4. Change the antenna cable to a BS coaxial cable.

5. Use a noise filter (for the wireless device).

6. Use a signal booster.

Correction

38

Operating InstructionsAPPENDIX A

CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U

(852-6-4181-219-00-2)

A-1

Operating Instructions

Split System Air Conditioner

Model No. Indoor Units

Outdoor Units

CS-MKE9NB4U CS-MKE12NB4U

CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU

Ceiling Panel

CZ-18BT1U

This air conditioner uses the refrigerant R410A.

Before operating the unit, read these operating instructions thoroughly and keep them for future reference.

Panasonic Corporation

1006 Kadoma, Kadoma City, Osaka, Japan

85264181219002

CV6233187594

FEATURES

CAUTION

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

CONTENTS

Page

FEATURES................................................................................. 2

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

SAFETY PRECAUTIONS........................................................... 2

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

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

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

NAMES OF PARTS .................................................................... 4

USING THE REMOTE CONTROLLER...................................... 8

OPERATION WITH THE REMOTE CONTROLLER................... 9

1. Automatic Operation..................................................... 9

2. Manual Operation......................................................... 9

3. Adjusting the Fan Speed............................................ 10

4. Night Setback Mode................................................... 10

5. HIGH POWER Mode.................................................. 10

• 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.

• Hot Start Heating System

Right from the start, the air is warm and comfortable. This system prevents any cold blasts at the beginning while the heat pump is warming up, or even defrosting.

• Automatic Restart Function for Power Failure

Even when power failure occurs, preset programmed operation can be reactivated once power resumes.

• High Power Operation

If not in Auto Operation, the unit operates at maximum output for 30 minutes, regardless of the desired temperature. The fan speed is 1 step above “High”.

Page

SPECIAL REMARKS ................................................................11

SETTING THE TIMER ..............................................................11

USING THE 1-HOUR OFF TIMER ...........................................13

TIPS FOR ENERGY SAVING ...................................................13

ADJUSTING THE AIRFLOW DIRECTION ...............................13

OPERATION WITHOUT THE REMOTE CONTROLLER..........14

CARE AND CLEANING ............................................................14

TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) ..16

OPERATING RANGE................................................................16

WIRED REMOTE CONTROLLER ............................................16

SPECIFICATIONS.....................................................................17

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 _______________________________

2

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.

INSTALLATION LOCATION

NOTE

CAUTION

NOTICE

• 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.

• 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.

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.

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.

• 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.

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.

• 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.

• 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.

3

NAMES OF PARTS

INDOOR UNIT

Air Intakes

Remote Controller

Refrigerant Tubes

Drain Hose

OUTDOOR UNIT

Air Outlet

Air Outlet! (4 locations)

NOTE

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.

UNIT DISPLAY AND OPERATION BUTTON

INDOOR UNIT

OPERATION button

OPERATION lamp

TIMER lamp

HIGH POWER lamp

REMOTE CONTROL receiver

IMPORTANT

Avoid using radio equipment such as mobile phone near (within 4 ft. (1.2 m)) 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.

REMOTE CONTROL receiver

OPERATION button

This section picks up infrared signals from the remote controller (transmitter).

When the remote controller cannot be used, pressing this button enables heating and cooling operation.

Each time this button is pressed, the type of operation conducted is indicated by the changing color of the OPERATION lamp. Press the button and select the lamp color that suits your preference for operation.

Cooling

operation

(green)

Heating

operation

(red)

Stop

(lamp off)

Air Intake

Air Outlet

Remote Controller

Refrigerant Tubes

Drain Hose

Outdoor (Condensing) Unit

4

Air from the room is drawn into this section and passes through air filters which remove dust.

Conditioned air is blown out of the air conditioner through the air outlet.

The remote controller controls power ON/OFF, operation mode selection, temperature, fan speed, timer setting, and air sweeping.

The indoor and outdoor units are connected by copper tubes through which refrigerant gas flows.

Moisture in the room condenses and drains off through this hose.

The outdoor unit contains the compressor, fan motor, heat exchanger coil, and other electrical components.

OPERATION lamp

TIMER lamp This lamp lights when the system is being

HIGH POWER lamp

The unit’s display lamps are dimmed during operation in the NIGHT SETBACK mode.

This lamp lights when the system is in the continuous AUTO (red or green), HEAT (red), DRY (orange) and COOL (green) mode. The OPERATION lamp lights up red and orange alternately when the system is defrosting.

controlled by the timer.

This lamp lights during operation in the HIGH POWER mode.

REMOTE CONTROLLER (DISPLAY)

Displayed when the time

display is set to 12-hour

time.

Symbols

Displayed when transmitting data

Displayed when indoor unit sensor is in use

Displayed when setting temperature

Displayed when temperature is shown

Displayed when setting timer

(1) Operation mode

AUTO .....................................

HEAT ......................................

MILD DRY ..............................

COOL .....................................

(2) Fan speed

Automatic operation ...............

HIGH .....................................

MEDIUM.................................

(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. flap indication................

LOW .......................................

(3) Temperature setting

60–86°F When set to 80 °F

temperature indication............

Flap angle indication..............

Sweep indication....................

(8) High power operation.............

5

REMOTE CONTROLLER

NOTE

Transmitter

When 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.

Display

Information 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.

HIGH POWER button

: If this button is pressed during HEAT, DRY or COOL operation, the

unit operates at maximum output for 30 minutes, regardless of the desired temperature. The fan speed is 1step above ‘‘HIGH’’.

FAN SPEED selector button

: The air conditioner automatically decides the fan speeds. : High fan speed : Medium fan speed : Low fan speed

FLAP button

Press 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 heating operation, the flap is set to

position (3) in the following chart. 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.

SWEEP

ON TIME/OFF TIME setting buttons

Advance button Return button

No 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”.

CANCEL button

SENSOR button

When 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.

ADDRESS switch

• The address switch changes to prevent mixing of signals from remote controller’s when two air conditioners are installed next to each other. Normally, the address switch is set to A. For more information, please contact the dealer where you made the purchase.

• Normally, the tabs on the remote controller should not be bent.

6

Temperature display selector button

This switches the temperature display between °C and °F.

Sensor

NOTE

A temperature sensor inside the remote controller senses the room temperature.

ON/OFF operation button

This 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.

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 button

Use this button to select AUTO, HEAT, DRY or COOL mode.

(AUTO) : When this setting is selected, the air conditioner calculates the

difference between the thermostat setting and the room temperature and automatically switches to the ''COOL'' or ''HEAT'' mode as appropriate.

(HEAT) : The air conditioner makes the room warmer.

(DRY) : The air conditioner reduces the humidity in the room.

(COOL) : The air conditioner makes the room cooler.

NIGHT SETBACK button

For details, see “4. Night Setback Mode”. When you press this button in the HEAT, DRY or COOL mode, the mark appears in the display, and the remote controller will automatically adjust the set temperature to save energy.

CLOCK button

Time display selector button

This switches the time display between 24-hour time and 12-hour time.

ACL button (ALL CLEAR)

Puts the remote controller into pre-operation status. Always press this button after replacing the batteries.

(Cover closed)

• The illustration above pictures the remote controller after the cover has been opened.

• The remote controller sends the temperature signal to the air conditioner regularly at five minute intervals. If the signal from the remote controller stops for more than 15 minutes due to the loss of the remote controller or other trouble, the air conditioner will switch to the temperature sensor which is built into the indoor unit and control the room temperature. In these cases, the temperature around the remote controller may differ from the temperature detected at the air conditioner’s position.

• 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.

7

USING THE REMOTE CONTROLLER

ACL button

CAUTION

Pb

NOTE

Air Conditioner (Indoor unit)

Receiver

Remote Controller

(Transmitter head)

HOW TO INSTALL BATTERIES

1. Slide the cover in the direction indicated by the arrow and remove

it.

2. Install two AAA alkaline batteries. Make sure the batteries point in

the direction marked in the battery compartment.

3. Use a thin object such as the tip of a pen to press the ACL button.

• The batteries last about six months, depending on how much you use the remote controller. Replace the batteries when the remote controller’s display fails to light, or when the remote controller cannot be used to change the air conditioner’s settings.

• Use two fresh leak-proof type-AAA alkaline batteries.

• In replacing batteries, follow the instructions as mentioned in the subsection “HOW TO INSTALL BATTERIES”.

• If you do not use the remote controller more than 1 month, take out the batteries.

• Dispose of the used batteries at the designated location in compliance with the applicable local ordinances.

Information for Users on Collection and Disposal of Old Equipment and used Batteries

[Information on Disposal in other Countries outside the European Union]

These symbols are only valid in the European Union. If you wish to discard these items, please contact your local authorities or dealer and ask for the correct method of disposal.

HOW TO USE THE REMOTE CONTROLLER

When using the remote controller, always point the unit’s transmitter head directly at the air conditioner’s receiver.

REMOTE CONTROLLER INSTALLATION POSITION

The remote controller may be operated either from a non-fixed position or from a wall-mounted position. To ensure that the air conditioner operates correctly, do not install the remote controller in the following places:

• In direct sunlight

• Behind a curtain or other places where it is covered

• More than 26 ft.(8 m) away from the air conditioner

• In the path of the air conditioner’s airstream

• Where it may become extremely hot or cold

• Where it may be subject to electrical or magnetic noise

• Where there is an obstacle between the remote controller and air conditioner (since a check signal is sent from the remote controller every 5 minutes)

MOUNTING THE REMOTE CONTROLLER

Before mounting the remote controller, press the ON/OFF operation button at the mounting location to make sure that the air conditioner operates from that location. The indoor unit should make a beeping sound to indicate that it has received the signal.

Rear Side

Remote Control Holder

Press

S/M (Single/Multiple switch)

• Initially, the S/M switch is set to S (Single).

• Set this switch to M (Multiple) for multiple operation.

• Always press ACL button by a thin object such as the tip of a pen after setting the S/M switch.

When multiple indoor units are used and units in other rooms are already operating, they will be operating with the same mode as the operating indoor units.

8

Note for the battery symbol (bottom two symbol examples):

This symbol might be used in combination with a chemical symbol. In this case it complies with the requirement set by the Directive for the chemical involved.

Set in place

Mounting Screws

5/32 x 5/8"

(4 x 16 mm)

(included)

To take out the remote controller, pull it forward.

• To prevent loss of the remote controller, you can connect the remote controller to the holder by passing a string through the remote controller and attachment hole.

Hole

WHEN HOLDING THE REMOTE CONTROLLER

• When using the remote controller and during air conditioner operation, the transmitter on the remote controller should be pointed towards the receiver on the indoor unit.

• Make sure that there are no objects between the remote controller and receiver which could block the signal.

OPERATION WITH THE REMOTE CONTROLLER

NOTE

1. Automatic Operation

The air conditioner calculates the difference between the thermostat setting and room temperature, and automatically determines the mode to operate under cooling or heating. Then, the air conditioner continuously operates under the mode selected at initial operation.

STEP 2

STEP 1

2. Manual Operation

STEP 4

STEP 5

Check that the circuit breaker on the power panel is turned on.

If the automatic operation settings of the unit do not meet your needs, press the setting buttons as described below and change the settings as desired.

STEP 2

STEP 3

STEP 1

Check that the circuit breaker on the power panel is turned on.

Once mode is selected and the unit is preset by following the steps below, you can have the air conditioner automatically bring the room to the desired temperature simply by pressing the ON/OFF operation button.

STEP 1 Press the MODE selector button to .

STEP 2 Press the ON/OFF operation button.

To stop the air conditioner, press the ON/OFF operation button again.

• To change the temperature setting; press the temperature setting buttons and change the setting to the desired temperature.

STEP 1 Press the MODE selector button

STEP 2 To start the air conditioner, press the ON/

STEP 3 Press the TEMP. setting buttons to change

STEP 4 Set the FAN SPEED selector button to the

STEP 5 Press the FLAP button and set the airflow

To stop the air conditioner, press the ON/OFF operation button again.

• When multiple indoor units are used and units in other rooms are already operating, they will be set to the same mode of operation as the operating indoor units.

• Choose the best position in the room for the remote controller, which also acts as the sensor for room comfort and transmits the operating instructions. Once you’ve found this best position, always keep the remote controller there.

• This appliance has a built-in 5-minute time delay circuit to ensure reliable operation. When the operation button is pressed, the compressor will start running within three minutes. In the event of power failure, the unit will stop.

and select the desired mode. For heating operation For dehumidifying operation For cooling operation

OFF operation button.

the temperature setting to the desired temperature. Adjustable temperature range:

30 °C max. 16 °C min.

setting you want.

direction as desired. (Refer to “ADJUSTING THE AIRFLOW DIRECTION” on page 13.)

or 86 °F max.

60 °F min.

o o o

9

3. Adjusting the Fan Speed

When the night setback mode is selected, the air conditioner automatically raises the temperature setting 2 °F when 30 minutes have passed after the selection was made, and then another 2 °F after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.

Setting temperature

Press the NIGHT SETBACK button

30 min.

Time

2°F

When the night setback mode is selected, the air conditioner automatically lowers the temperature setting 4 °F when 30 minutes have passed after the selection was made, and then another 4 °F after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle heating is needed.

Setting temperature

Press the NIGHT SETBACK button

30 min.

Time

4°F

NOTE

A. Automatic fan speed

Simply set the FAN SPEED selector button to the position. This automatically sets the best fan speed for the room temperature.

B. Manual fan speed

If you want to adjust fan speed manually during operation, just set the FAN SPEED selector button as desired. [ ,

, or ]

4. Night Setback Mode

B. In Heating Mode: ( )

5. HIGH POWER Mode

Night Setback Mode is used for saving energy.

Press the NIGHT SETBACK button while unit is operating. The mark appears in the display.

To release the night setback function, press the NIGHT SETBACK button again.

A. In Cooling and DRY Mode: ( and )

HIGH POWER mode can be used to increase the output of the indoor unit for all operation modes except automatic operation.

Press the HIGH POWER button while unit is operating. The mark appears in the display.

To cancel, press HIGH POWER button again.

• When the HIGH POWER button is pressed, the unit operates at maximum output for 30 minutes, regardless of the desired temperature. The fan speed is 1 step above “High”.

• HIGH POWER Mode cannot be used when the operation mode is in Automatic Operation.

• When set to High fan speed during heating operation, the fan runs at High fan speed even though the mark is displayed.

• Depending on the operating conditions, the fan speed may be increased by a small amount only.

10

SPECIAL REMARKS

‘‘DRY’’ ( ) Operation

Heating ( ) Operation

Cooling ( ) operation

Power failure during operation

Clicking Sound

Remote Controller

NOTE

How it works?

• Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically.

• During DRY operation, the fan speed automatically runs at lower speed for providing a comfortable breeze.

• ‘‘DRY’’ operation is not possible if the indoor temperature is 59 °F or less.

Heating performance

• Because this air conditioner heats a room by drawing in 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 air conditioner, use another heating appliance together with it.

Defrosting

• When the outdoor temperature is low, frost or ice may form on the heat exchanger coil, reducing heating performance. When this happens, a microcomputer defrosting system operates. At the same time, the fan on the indoor unit stops and the OPERATION lamp lights red and orange alternately until defrosting is completed. Heating operation restarts after several minutes. (This interval will vary slightly depending upon the outdoor temperature and the way in which frost forms.)

Cold draft prevention

• For several minutes after the start of heating operation, the indoor fan runs at a lower speed until the indoor heat exchanger coil has warmed up sufficiently. However, the fan may remain stopped when the room temperature is low. This is because the COLD DRAFT PREVENTION SYSTEM is in operation.

SETTING THE TIMER

In the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom front section of the remote controller.

• Temperature: °F

• Time: AM, PM

1. How to set the present time

(Example) To set to 10:30 pm.

• Sometimes the indoor unit may not get to the set fan speed such as LOW under cool operation at very low outdoor temperatures due to the indoor unit being protected from ice or frost.

• In the event of power failure, the unit will stop. When the power is resumed, the unit will restart automatically in approximately 15 minutes by the remote controller.

Clicking sound is heard from the air conditioner

• In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur. This is normal, and the sound will soon disappear.

• The remote controller sends the setting condition to the air conditioner regularly at five minute intervals.

Operation Indication

1. Press the CLOCK button

once if the time indicator is not flashing.

2. Press the Advance, Return

( , ) button until PM 10:30 is displayed.

3. Press the CLOCK button

again.

The time indication alone flashes.

The time can be set in 1-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

This completes the setting of the current time.

11

2. How to set the OFF time

NOTE

(Example) To stop the air conditioner at 11:00 am.

4. How to set daily ON/OFF repeat timer

(Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am.

Operation Indication

1. Press the OFF TIME setting

button once.

2. Press the Advance, Return

( , ) button until AM 11:00 is displayed.

3. Wait a few seconds, and then

the setting is complete.

The timer indication is displayed, and the present OFF time is shown.

The timer indication blinks. The time can be set in 10-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

The timer indication stops blinking and the present time is displayed.

3. How to set the ON time

(Example) To start operation at 7:10 am.

Operation Indication

1. Press the ON TIME setting

button once.

2. Press the Advance, Return

( , ) button until AM 7:10 is displayed.

3. Wait a few seconds, and then

the setting is complete.

The timer indication is displayed, and the present ON time is shown.

The timer indication blinks. The time can be set in 10-minute increments. Holding down the button advances the time rapidly in 10-minute increments.

The timer indication stops blinking and the present time is displayed.

10:30 pm. Present time

7:10 am. ON

11:00 am. OFF

Operation Indication

1. Set the timer ON/OFF times

as shown in 2-1, 2, 3 and 3-1, 2, 3.

• The ON/OFF combination timer uses the current time as the reference, and it is activated starting from whichever set time comes first.

• With the ON/OFF combination timer, the settings are repeated every day.

• You can check the timer ON/OFF times after you have set them by pressing the ON TIME and OFF TIME setting buttons.

To cancel a timer program

• Press the CANCEL button.

• When either an ON or OFF timer is to be canceled, press the button corresponding to the timer whose program is to be canceled, and then press the CANCEL button.

• The airflow direction, fan speed and temperature setting can be changed after a timer program has been set even when the unit is stopped. Even when operation is stopped during an ON timer program, the unit will start operating when the set time is reached provided that the program is not canceled.

• When the ON timer and OFF timer are set to the same time, the timer operates as if it is turned off.

The present time 10:30 pm. and

are displayed.

12

USING THE 1-HOUR OFF

NOTE

HEAT

SWEEP

A. Sweep function

The flap starts moving up and down to deliver air over the sweep range.

B. Setting the airflow manually

Referring to the above illustration, use the FLAP button to set the airflow direction within the range used during the heating, cooling, or dehumidifying operation.

C. Auto flap function

The flap is set to the recommended position.

NOTE

CAUTION

TIMER

1. 1-Hour OFF Timer

This function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed.

The indicator in the display indicates that this function is operating.

Setting procedure:

Regardless of whether the unit is operating or stopped, press the 1 HR. TIMER button.

appears in the display.

Cancellation procedure:

Press the ON/OFF operation button to turn the unit off, wait for the unit to stop operating, and then press the ON/OFF operation button again. The 1-Hour Timer function is now cancelled and the unit operates normally.

ADJUSTING THE AIRFLOW DIRECTION

The vertical airflow can be adjusted by moving the flap with the remote controller. Do not move the flap with your hands. Confirm that the remote controller has been turned on. Use the FLAP button to set either the sweep function or one of the six airflow direction settings.

COOL

DRY

• If, while the 1-Hour Timer function is operating, the 1HR. TIMER button is pressed once to cancel the function and then again, the unit continues to operate for one hour from that point in time and then stops.

• It is not possible to use the OFF Timer and 1-Hour OFF Timer together. Whichever function is set last takes precedence. If the 1 HR. TIMER button is pressed while the TIMER OFF function operates, the OFF Timer is cancelled and the unit will stop operating one hour later.

2. Operation together with the daily ON/OFF

repeat timer

The 1-Hour OFF Timer setting is given priority over the DAILY ON/ OFF REPEAT setting.

TIPS FOR ENERGY SAVING

Avoid

• Do not block neither the air intake nor the air outlet. It may cause less performance, and may leads to malfunctions.

• 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.

• The flap automatically closes when the unit is off.

• During the heating operation, the fan speed will be very low and the flap will be in the horizontal position (position ) until the air being blown out of the unit begins to warm. Once the air warms up, the flap position and fan speed change to the settings specified with the remote controller.

• Use the FLAP button on the remote controller to adjust the

position of the flap. If you move the flap by hand, the flap position according to the remote controller and the actual flap position may no longer match. If this should happen, shut off the unit, wait for the flap to close, and then turn on the unit again; the flap position will now be normal again.

• Do not have the flap pointed down during cooling operation.

Condensation may begin to form around the air vent and drip down.

13

OPERATION WITHOUT THE

NOTE

CAUTION

REMOTE CONTROLLER

INDOOR UNIT

OPERATION button

OPERATION lamp

If you have lost the remote controller or it has trouble, follow the steps below.

When the air conditioner is not running

Each time the OPERATION button is pressed, the type of operation conducted is indicated by the changing color of the OPERATION lamp. Press the button and select the lamp color that suits your preference for operation.

Cooling operation

(green)

The temperature is set to the room temperature minus 4°F during the cooling operation and to the room temperature plus 4°F during the heating operation, and the fan speed and flap are set to Auto.

Heating

operation (red)

Stop

(lamp off)

CARE AND CLEANING

• Cleaning and maintenance operations must be carried out by specially trained personnel. While working in high places, slipping or falling may result in serious injury.

• For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.

• Do not pour water on the indoor unit to clean it. This will damage the internal components and cause an electric shock hazard.

Ceiling panel (Indoor Unit)

Clean the ceiling panel of the indoor unit with a vacuum cleaner brush, or wipe it with a clean, soft cloth.

If it is stained, use a clean cloth moistened with a mild liquid detergent. When cleaning it, be careful not to force the flaps out of place.

• Never use solvents, or harsh chemicals when cleaning the indoor unit. Do not wipe the plastic casing using very hot water.

• Some metal edges and the fins are sharp and may cause injury if handled improperly; be especially careful when you clean these parts.

• The internal coil and other components of the outdoor unit must be cleaned every year. Consult your dealer or service center.

Cleaning the flaps

• The air outlet flap can be 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.

14

• Do not move the flap with your hands.

• When using a footstool or the like, be careful not to let it tip over.

Cleaning the main unit and Remote Controller

• Wipe clean using a soft, dry cloth.

• To remove stubborn dirt, moisten a cloth in warm water no hotter

than 104 °F, wring thoroughly, and then wipe.

Air filter

NOTE

CAUTION

The air filter collects dust and other particles from the air and should be cleaned once every 6 months. 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.

How to remove the filter

1.

Slide the two latches of the air intake grille with your thumbs in the direction of the arrow to open the grille.

Air intake grille

How to remove the air intake grille

1.

Open the air intake grille.

2. Detach the safety cord from the frame (remember to attach it

again after cleaning or maintenance).

3. Hold on the air intake grille and pull it towards you to detach the

two air intake grille hinges.

4. Clean the grille gently using a soft sponge, or the like. Then dry it

with care. Neutral detergent may be used to remove stubborn dirt. Then rinse thoroughly with water and dry it.

Air intake grille hinge

Latch

Air intake grille hinge

Ceiling panel

2. Open the air intake grille downward.

Air intake grille

3. Press the tabs on both sides of the air filter (indicated with

marks on the grill) to release the filter, and then, lift and pull the filter up and out using the tabs to remove it.

Safety cord

Air filter

Safety cord

• When cleaning the air filter, never remove the safety cord. If it is necessary to remove it for servicing and maintenance inside, be sure to reinstall the safety cord securely (hook on the grille side) after the work.

• When the air intake grille has been opened, rotating parts (such as the fan), electrically charged areas, etc. will be exposed in the unit’s opening. Bear in mind the dangers that these parts and areas pose, and proceed with the work carefully.

• Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot.

Care: After a prolonged idle period

Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it.

Care: Before a prolonged idle period

• Operate the fan for half a day to dry out the inside.

• Disconnect the power supply and also turn off the circuit breaker.

• Clean the air filter and replace it in its original position.

• Outdoor unit internal components must be checked and cleaned periodically. Contact your local dealer for this service.

4. Use a vacuum cleaner to remove light dust. If there is sticky dust

on the filter, wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.

5. Insert the filter correctly again inside the grille, close the grille

letting the latches slide towards the outside and fix again the latch.

15

TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)

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 service center.

Trouble Possible Cause Remedy

Air conditioner does not run at all.

OPERATION lamp blinks and air conditioner does not operate.

Compressor runs but soon stops.

Poor cooling (or heating) performance.

Clicking sound is heard from the air conditioner.

OPERATION lamp lights but outdoor unit will not run.

TIMER lamp blinks (3 sec. interval) and air conditioner does not operate.

1. Power failure. 1. Restore power.

2. Leakage circuit breaker tripped.

3. Line voltage is too low.

4. Batteries in remote controller have run down.

Trouble in system. Contact service

Obstruction in front of condenser coil. (Outdoor Unit)

1. Dirty or clogged air filter.

2. Heat source or many people in room.

3. Doors and/or windows are open.

4. Obstacle near air intake or air discharge port.

5. Thermostat is set too high for cooling (or too low for heating).

6. (Outdoor temperature is too low for heating.)

In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur.

The use of cellular phones near the air conditioner may cause disturbance to its normal operation.

FLOAT SWITCH is actived.

2. Contact service center.

3. Consult your electrician or dealer.

4. Replace batteries.

center.

Remove obstruction.

1. Clean air filter to improve airflow.

2. Eliminate heat source if possible.

3. Shut them to keep the heat (or cold) out.

4. Remove it to ensure good airflow.

5. Set the temperature lower (or higher).

6. (Consult your dealer or try to use another heat appliance.)

This is normal, and the sound will soon disappear.

1. Turn off the power then restart the air conditioner after a while.

2. Consult your dealer.

Contact service center.

OPERATING RANGE

The air conditioner is operable within the temperature ranges as listed below:

Temperature Indoor air

temperature

COOLING Max. 95 °F DB /

Outdoor air temperature

115 °F DB

71 °F WB

Min. 67 °F DB /

14 °F DB

57 °F WB

HEATING Max. 80 °F DB /

67 °F WB

75 °F DB / 65 °F WB

Min. – DB / – WB – DB / 0 °F WB

WIRED REMOTE CONTROLLER

A separately sold wired remote controller (CZ-RD515U) used with this air conditioner is also available. If you wish to use the wired remote control function, you will need to purchase the optional wired remote controller.

16

SPECIFICATIONS

inch(mm)

Model No.

Ceiling Panel

CZ-18BT1U

6.0(2.7)

1-9/16×24-19/32×24-19/32

(40×625×625)

Unit Dimensions (H×W×D)

Net Weight lbs. (kg)

Model No.

Indoor Unit

CS-MKE9NB4U

Single-phase, 208-230 V, 60 Hz

Heating Capacity

Operation Sound

Unit Dimensions (H×W×D)

Net Weight

Power Source

Cooling Capacity

kW

BTU/h

kW

BTU/h

inch(mm)

lbs.(kg)

Cooling Operation (H/M/L)

Heating Operation (H/M/L)

dB(A) dB(A)

33/32/31

12,300

3.60

9,000

2.65

34/33/32

11-5/32×22-5/8×22-5/8

(283×575×575)

35.3(16.0)

34/32/31

13,600

4.00

11,900

3.50

35/34/32

11-5/32×22-5/8×22-5/8

(283×575×575)

35.3(16.0)

CS-MKE12NB4U

Model No.

Outdoor Unit

CU-4KE24NBU

CU-3KE19NBU

Single-phase, 208-230 V, 60 Hz

Heating Capacity

Operation Sound

Unit Dimensions (H×W×D)

Net Weight

Power Source

Cooling Capacity

kW

BTU/h

kW

BTU/h

inch(mm)

lbs.(kg)

Cooling Operation (Hi)

Heating Operation (Hi)

dB(A) dB(A)

50

24,800 [ 11,600 ~ 24,800 ]

7.30 [ 3.40 ~ 7.30 ]

18,600 [ 9,800 ~ 18,600 ]

5.45 [ 2.90 ~ 5.45 ]

52

29-1/8×35-7/16×12-19/32

(740×900×320)

143.3(65.0)

50

29,200 [ 11,600 ~ 29,200 ]

8.60 [ 3.40 ~ 8.60 ]

23,200 [ 9,800 ~ 23,200 ]

6.80 [ 2.90 ~ 6.80 ]

52

29-1/8×35-7/16×12-19/32

(740×900×320)

143.3(65.0)

53

32,000 [ 11,600 ~ 32,000 ]

9.40 [ 3.40 ~ 9.40 ]

30,600 [ 9,800 ~ 30,600 ]

9.00 [ 2.90 ~ 9.00 ]

52

35-1/32×35-7/16×12-19/32

(890×900×320)

180.8(82.0)

CU-4KE31NBU

17

APPENDIX B

Operating Instructions

CS-KE18NB4UW & CZ-18BT1U

(852-6-4181-213-00-2)

A-2

Operating Instructions

Split System Air Conditioner

Model No. Indoor Units

CS-KE12NB41 CS-KE18NB4UW

Ceiling Panel

CZ-18BT1U

This air conditioner uses the refrigerant R410A.

“Multiple use” is applied for the model CS-KE18NB4UW only.

• “Single use” means that only one indoor unit is connected with one outdoor unit in a one-unit-to-one-

unit configuration and that the remote controller’s S/M

switch is at the “S” (Single) position.

• “Multiple use” (i.e. Flexi-Multi system) means that two or more indoor units are connected with one outdoor unit in a multiple-unit-to-one-unit configuration and that the remote controller’s S/M switch is at the “M” (Multiple) position. (Refer to “USING THE REMOTE CONTROLLER” on page 8.)

Outdoor Units (For Single use)

CU-KE12NK1 CU-KE18NKU

(For Multiple use)

CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU

Before operating the unit, read these operating instructions thoroughly and keep them for future reference.

Panasonic Corporation

1006 Kadoma, Kadoma City, Osaka, Japan

85264181213002

CV6233187655

FEATURES

CAUTION

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 Switching between Cooling and Heating When the remote controller’s S/M switch is at the “S” (Single) position

This unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting.

When the remote controller’s S/M switch is at the “M” (Multiple) position

Unlike when the switch is at the “S” position as described above, the function for automatically switching between cooling and heating does not work. Then, the air conditioner continuously operates under the mode selected at initial operation.