Mitsubishi Electric Msz-wr09na-u1 Split-type Air Conditioner Instruction Manual

MSZ-WR09NA-U1 Split-Type Air Conditioner

Product Information

The product is an indoor unit for a specific model of air
conditioner. It is available in several different models:
MSZ-WR09NA – U1, U2; MSZ-WR12NA – U1, U2; MSZ-WR18NA – U1;
MSZ-WR24NA – U1. The unit consists of various structural parts,
electrical parts, functional parts, and a heat exchanger. It also
includes an accessory and a remote controller.

Structural Parts

• BOX ASSEMBLY
• PANEL ASSEMBLY
• CATCH
• SCREW CAP
• FRONT PANEL
• ANTI MOLD FILTER
• CORNER BOX RIGHT
• INSTALLATION PLATE

Accessory and Remote Controller

• REMOTE CONTROLLER

Electrical Parts and Functional Parts

• BEARING MOUNT ASSEMBLY
• DRAIN HOSE
• NOZZLE ASSEMBLY
• VANE-UPPER
• VANE-LOWER
• VANE MOTOR
• ROOM TEMPERATURE THERMISTOR
• ELECTRONIC BOARD CONTROL P.C.
• CONDUIT PLATE
• CONDUIT COVER
• POWER P.C. BOARD
• INDOOR COIL THERMISTOR
• VARISTOR
• FUSE
• V.A. CLAMP
• INDOOR FAN MOTOR
• MOTOR BAND
• LINE FLOW FAN

Heat Exchanger

The heat exchanger consists of multiple parts, but the specific
part numbers and names are not provided in the user manual
extract.

Product Usage Instructions

To use the indoor unit, follow these steps:

1. Ensure that the indoor unit is properly installed according to
   the installation instructions provided in the user manual.
2. If using the remote controller, insert the batteries into the
   remote controller.
3. Turn on the power supply to the indoor unit.
4. Use the remote controller or any other control mechanism
   provided to adjust the settings of the air conditioner, such as
   temperature, fan speed, and mode of operation.
5. Ensure that the filters are clean and free from any debris.
   Clean or replace them as necessary.
6. Maintain regular servicing and maintenance of the unit as
   recommended in the user manual to ensure optimal performance and
   longevity.

Refer to the complete user manual for more detailed instructions
on operation, maintenance, troubleshooting, and safety
precautions.

INDOOR UNIT
PARTS CATALOG
Models
MSZ-WR09NA – U1 , U2 MSZ-WR12NA – U1 , U2 MSZ-WR18NA – U1 MSZ-WR24NA – U1

Revision A:
· MSZ-WR09/12NA – U2 have been added. OBB818 is void.
No. OBB818
REVISED EDITION-A

MSZ-WR24NA

CONTENTS
1. SERVICE PARTS LIST ································ 2 2. OPTIONAL PARTS ··································· 13
SERVICE MANUAL (OBH818)

1 SERVICE PARTS LIST
MSZ-WR09NA MSZ-WR12NA 1-1. INDOOR UNIT STRUCTURAL PARTS

1 2
3 4
5

8

7 6

Optional parts (Refer to 2-1.)

1-2. ACCESSORY AND REMOTE CONTROLLER
9

2
OBB818A

MSZ-WR09NA MSZ-WR12NA 1-1. INDOOR UNIT STRUCTURAL PARTS
1. The part quantity below indicates the required number of pieces per unit.

MSZ-WR09NA – U1 MSZ-WR09NA – U2 MSZ-WR12NA – U1 MSZ-WR12NA – U2

No. Part No.

Part name

Symbol in Wiring Diagram

Remarks

1 U01 A01 234 BOX ASSEMBLY 2 U01 A03 000 PANEL ASSEMBLY 3 U01 A01 142 CATCH 4 U01 A01 067 SCREW CAP 5 U01 A03 010 FRONT PANEL 6 U01 A02 100 ANTI MOLD FILTER 7 U01 A01 975 CORNER BOX RIGHT 8 U01 A01 970 INSTALLATION PLATE

1

1

1

1

1

1

1

1

2

2

2

2

2

2

2

2

1

1

1

1

2

2

2

2

1

1

1

1

1

1

1

1

1-2. ACCESSORY AND REMOTE CONTROLLER
1. The part quantity below indicates the required number of pieces per unit.

Includes No. 3, 4 and 5 2 PCS/SET 2 PCS/SET
1 PC/SET

MSZ-WR09NA – U1 MSZ-WR09NA – U2 MSZ-WR12NA – U1 MSZ-WR12NA – U2

No. Part No.

Part name

Symbol in Wiring Diagram

Remarks

9 U01 A05 426 REMOTE CONTROLLER

1

1

1

1

MS16A

3
OBB818A

MSZ-WR09NA MSZ-WR12NA 1-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

18 1

16

MOTOR BED

15

ELECTRICAL BOX

14 13

2
3
DRAIN CAP

12

17
CABLE GUIDE

TERMINAL BLOCK
11 10

ELECTRICAL COVER

4

5

67

8

9

4
OBB818A

MSZ-WR09NA MSZ-WR12NA 1-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS
1. The part quantity below indicates the required number of pieces per unit.

MSZ-WR09NA – U1 MSZ-WR09NA – U2 MSZ-WR12NA – U1 MSZ-WR12NA – U2

No. Part No.

Part name

Remarks

1 U01 A02 510 BEARING MOUNT ASSEMBLY

2 U01 A01 702 DRAIN HOSE

3 U01 A01 235 NOZZLE ASSEMBLY

4 U01 A01 040 VANE-UPPER

5 U01 A01 041 VANE-LOWER

6 U01 A01 303 VANE MOTOR

7

U01 A01 308

ROOM TEMPERATURE THERMISTOR

7

U01 A08 308

ROOM TEMPERATURE THERMISTOR

8

U01 A32 452

ELECTRONIC BOARD

CONTROL P.C.

8

U01 A52 452

ELECTRONIC BOARD

CONTROL P.C.

8

U01 A33 452

ELECTRONIC BOARD

CONTROL P.C.

8

U01 A53 452

ELECTRONIC BOARD

CONTROL P.C.

9 U01 A04 978 CONDUIT PLATE

10 U01 A01 979 CONDUIT COVER

11 U01 A01 440 POWER P.C. BOARD

11 U01 A03 440 POWER P.C. BOARD 12 U01 A04 307 INDOOR COIL THERMISTOR
12 U01 A09 308 INDOOR COIL THERMISTOR 13 U01 A01 385 VARISTOR 14 U01 A01 382 FUSE 14 U01 001 239 FUSE 15 U01 A01 784 V.A. CLAMP

16 U01 A01 300 INDOOR FAN MOTOR

17 U01 A01 333 MOTOR BAND 18 U01 A01 302 LINE FLOW FAN

1

1

1

1

Includes sleeve bearing

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

MV UP & DOWN

1

1

RT11

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Includes TERMINAL BLOCK with TERMINAL P.C. BOARD

1

1

1

1

RT12, RT13

1

1

RT12, RT13

1

1

1

1 NR11

1

1

F11 T3.15AL250V

1

1

F11 T3.15AL250V

1

1

1

1

RC0J30-, Includes

1

1

1

1

MF FAN MOTOR RUBBER

MOUNT (2 PCS/SET)

1

1

1

1

1

1

1

1

5
OBB818A

MSZ-WR09NA MSZ-WR12NA 1-4. INDOOR UNIT HEAT EXCHANGER
1 2 3
6
OBB818A

MSZ-WR09NA MSZ-WR12NA 1-4. INDOOR UNIT HEAT EXCHANGER
1. The part quantity below indicates the required number of pieces per unit.

MSZ-WR09NA – U1 MSZ-WR09NA – U2 MSZ-WR12NA – U1 MSZ-WR12NA – U2

No. Part No.

Part name

Symbol in Wiring Diagram

Remarks

1 U01 A03 620 INDOOR HEAT EXCHANGER 2 U01 A01 666 UNION GAS 3 U01 A01 667 UNION LIQUID

1

1

1

1

1

1

1

1

1

1

1

1

ø3/8 (ø9.52) ø1/4 (ø6.35)

7
OBB818A

MSZ-WR18NA MSZ-WR24NA 1-5. INDOOR UNIT STRUCTURAL PARTS
1 2 3
4 5
6 7
1-6. ACCESSORY AND REMOTE CONTROLLER
10

9
8 Optional parts (Refer to 2-1.)

8
OBB818A

MSZ-WR18NA MSZ-WR24NA 1-5. INDOOR UNIT STRUCTURAL PARTS
1. The part quantity below indicates the required number of pieces per unit.

MSZ-WR18NA – U1 MSZ-WR24NA – U1

No. Part No.

Part name

Symbol in Wiring Diagram

Remarks

1 E 2 2 N 8 7 2 3 4 BOX ASSEMBLY 2 E 2 2 N 8 7 9 7 6 CORNER BOX LEFT 3 E 2 2 P 8 8 0 0 0 PANEL ASSEMBLY 4 E 2 2 F 9 5 1 4 2 CATCH 5 E 2 2 9 1 3 0 6 7 SCREW CAP 6 E 2 2 P 8 8 0 1 0 FRONT PANEL 7 E 2 2 N 8 7 1 0 0 AIR FILTER 8 E 2 2 N 8 7 9 7 5 CORNER BOX RIGHT 9 E 2 2 N 8 7 9 7 0 INSTALLATION PLATE

1

1

1

1

1

1

2

2

2

2

1

1

2

2

1

1

1

1

1-6. ACCESSORY AND REMOTE CONTROLLER
1. The part quantity below indicates the required number of pieces per unit.

Includes No. 4, 5 and 6 2 PCS/SET 2 PCS/SET
1 PC/SET

MSZ-WR18NA – U1 MSZ-WR24NA – U1

No. Part No.

Part name

Symbol in Wiring Diagram

Remarks

10 E 2 2 P 8 8 4 2 6 REMOTE CONTROLLER

1

1

MS16A

9
OBB818A

MSZ-WR18NA MSZ-WR24NA 1-7. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

1

19

18

MOTOR

BED

2 17 16

3

DRAIN

CAP

15

14

ELECTRICAL BOX

ELECTRICAL COVER

4

5

6

7

8

9

10

CABLE GUIDE

11

12 13

10
OBB818A

MSZ-WR18NA MSZ-WR24NA 1-7. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS
1. The part quantity below indicates the required number of pieces per unit.

MSZ-WR18NA – U1 MSZ-WR24NA – U1

No. Part No.

Part name

Symbol in Wiring Diagram

Remarks

1 E 2 2 A 8 9 5 0 9 BEARING MOUNT

1

2 E 2 2 P 7 2 7 0 2 DRAIN HOSE

1

3 E 2 2 P 8 8 2 3 5 NOZZLE ASSEMBLY

1

4 E 2 2 N 8 7 0 4 0 HORIZONTAL VANE

1

5 E 2 2 N 8 7 3 0 3 VANE MOTOR (HORIZONTAL)

1

6 E 2 2 N 9 4 3 7 5 TERMINAL BLOCK ASSEMBLY

1

7

E22

N87

095

CONTROL P.C. BOARD HOLDER ASSEMBLY

1

8

E22

22B

452

ELECTRONIC CONTROL P.C. BOARD

1

8

E22

23B

452

ELECTRONIC CONTROL P.C. BOARD

9 E 2 2 N 8 7 7 8 4 V.A. CLAMP

1

10 E 2 2 N 9 4 9 7 9 CONDUIT COVER

1

11 E 2 2 N 9 4 9 7 8 CONDUIT PLATE

1

12 E 2 2 B 7 5 3 8 5 VARISTOR

1

13 E 2 2 A 4 9 3 8 2 FUSE

1

14 E 2 2 N 9 4 4 4 0 POWER P.C. BOARD

1

15 E 2 2 N 8 7 3 0 7 INDOOR COIL THERMISTOR

1

16 E 2 2 N 8 7 3 3 3 MOTOR BAND

1

17 E 2 2 N 8 7 5 4 1 WATER COVER

1

18 E 2 2 L 7 4 3 0 0 INDOOR FAN MOTOR

1

18 E 2 2 J 4 4 3 0 0 INDOOR FAN MOTOR

19 E 2 2 N 8 7 3 0 2 LINE FLOW FAN

1

1

1

1

1

1

MV UP & DOWN

1

TB

1

Includes ROOM TEMPERATURE

THERMISTOR (RT11)

1

Includes ROOM TEMPERATURE THERMISTOR (RT11)

1

1

1

1

NR11

1

F11 T3.15AL250V

1

1 RT12,RT13

1

1

RC0J30- ,

MF Includes FAN MOTOR RUBBER

MOUNT (2 PCS/SET)

RC0J30- ,

1

MF Includes FAN MOTOR RUBBER

MOUNT (2 PCS/SET)

1

11
OBB818A

MSZ-WR18NA MSZ-WR24NA 1-8. INDOOR UNIT HEAT EXCHANGER
1

2 3

1. The part quantity below indicates the required number of pieces per unit.

MSZ-WR18NA – U1 MSZ-WR24NA – U1

No. Part No.

Part name

Symbol in Wiring Diagram

Remarks

1 E22 28E 620 INDOOR HEAT EXCHANGER 1 E22 31E 620 INDOOR HEAT EXCHANGER 2 E22 151 667 UNION (LIQUID) 2 E22 151 666 UNION (LIQUID) 3 E22 179 667 UNION (GAS) 3 E22 527 666 UNION (GAS)

1 1
1 1
1 1

ø 1/4 (ø 6.35) ø 3/8 (ø 9.52) ø 1/2 (ø 12.7) ø 5/8 (ø 15.88)

12
OBB818A

2 OPTIONAL PARTS

2-1. AIR CLEANING FILTER
Every 3 months:
Remove dirt by a vacuum cleaner. When dirt cannot be removed by vacuum cleaning:
Soak the filter and its frame in lukewarm water before rinsing it. After washing, dry it well in shade. Every year:
Replace it with a new air cleaning filter for best performance. NOTE 1: Clean the filters regularly for best performance and to reduce power consumption. NOTE 2: Dirty filters cause condensation in the air conditioner which will contribute to the growth of fungi such as mold.
It is therefore recommended to clean air filters every 2 weeks.

(ANTI-ALLERGY ENZYME FILTER)

Model

Part No.

MSZ-WR09NA MSZ-WR12NA MSZ-WR18NA MSZ-WR24NA

MAC-408FT-E

Air filter

Pull to remove from the air filter.

Attach to the air filter.

13
OBB818A

HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

© Copyright 2018 MITSUBISHI ELECTRIC CORPORATION Issued: Feb. 2022. No. OBB818 REVISED EDITION-A Published: Sep. 2018. No. OBB818 Made in Japan

Specifications are subject to change without notice.