Midea LC3 Series Betriebsanleitung

Midea LC3 Series

DC Inverter Air Conditioner

Technical Service Manual

Applicable Model:

Indoor unit Outdoor unit

IDR3-X 26M

IDR3-X 35M

IDR3-X 53M

IDR3-X 71M

IDR3-X 90M

IDR3-X 105M

IDR3-X 140M

IDR3-X 160M

MCR3-X 26M

MCR3-X 35M

MCR3-X 53M

MCR3-X 71M

MCR3-X 90M

MCR3-X 105M

MCR3-X 140M

MCR3-X 160M

Midea LC3 Series DC Inverter Air conditioner Technical Service Manual MCAC-UTSM-202006

Content

Part. 1 General information...............................................2

Part. 2 Outdoor Unit...........................................................6

Part. 3 Indoor Unit............................................................22

Part. 4 Installation & Troubleshooting...........................77

MCAC-UTSM-202006 Midea LC3 Series DC Inverter Air conditioner Technical Service Manual

Part. 1 General information

1. Model Names of Indoor/Outdoor Units .............................3

2. External Appearance ..........................................................3

3. Nomenclature......................................................................5

Midea LC3 Series DC Inverter Air conditioner Technical Service Manual MCAC-UTSM-202006

1. Model Names of Indoor/Outdoor Units

Indoor unit

Outdoor unit

Model

Power supply

Model

Power supply

IDR3-X 26M

220-240V~, 1Ph, 50/60Hz

MCR3-X 26M

220-240V~, 1Ph, 50/60Hz

IDR3-X 35M

220-240V~, 1Ph, 50/60Hz

MCR3-X 35M

220-240V~, 1Ph, 50/60Hz

IDR3-X 53M

220-240V~, 1Ph, 50/60Hz

MCR3-X 53M

220-240V~, 1Ph, 50/60Hz

IDR3-X 71M

220-240V~, 1Ph, 50/60Hz

MCR3-X 71M

220-240V~, 1Ph, 50/60Hz

IDR3-X 90M

220-240V~, 1Ph, 50/60Hz

MCR3-X 90M

220-240V~, 1Ph, 50/60Hz

IDR3-X 105M

220-240V~, 1Ph, 50/60Hz

MCR3-X 105M

220-240V~, 1Ph, 50/60Hz

IDR3-X 140M

220-240V~, 1Ph, 50/60Hz

MCR3-X 140M

220-240V~, 1Ph, 50/60Hz

IDR3-X 160M

220-240V~, 1Ph, 50/60Hz

MCR3-X 160M

220-240V~, 1Ph, 50/60Hz

2. External Appearance

2.1 Indoor units

IDR3-X 26M / IDR3-X 35M/ IDR3-X 53M/ IDR3-X 71M/ IDR3-X 90M/ IDR3-X 105M

IDR3-X 140M/ IDR3-X 160M

MCAC-UTSM-202006 Midea LC3 Series DC Inverter Air conditioner Technical Service Manual

2.2 Outdoor unit

MCR3-X 26M/ MCR3-X 35M/ MCR3-X 53M

MCR3-X 71M/ MCR3-X 90M

MCR3-X 105M/ MCR3-X 140M

MCR3-X 160M

Midea LC3 Series DC Inverter Air conditioner Technical Service Manual MCAC-UTSM-202006

3. Nomenclature

3.1 Indoor unit

I D R3– X 26 M

Phase type - M: Single phase

Capacity type - 26: 2600W

Refrigerant type - X: R410A

Series number：R3

Medium static pressure

Indoor unit

3.2 Outdoor unit

M C R3 - X 26 M

Phase type - M: Single phase

Capacity type - 26: 2600W

Refrigerant type - X: R410A

Series number：R3

Commercial

Outdoor unit

MCAC-UTSM-202006 Midea LC3 Series DC Inverter Air conditioner Technical Service Manual

Part. 2 Outdoor Unit

1. Specifications....................................................................7

2. Dimension (Unit:mm) ........................................................9

3. Refrigerant circuit ........................................................... 11

4. Wiring Diagrams..............................................................16

5. Electric Characteristics...................................................20

6. Sound Levels ...................................................................21

7. Accessories .....................................................................21

Midea LC3 Series DC Inverter Air conditioner Technical Service Manual MCAC-UTSM-202006

1. Specifications

Table 1.1: MCR3-X 26(35,53,71)M specifications

2.6

3.5

5.3

7.1

Model name

MCR3-X 26M

MCR3-X 35M

MCR3-X 53M

MCR3-X 71M

Power supply

1-phase, 220-240V, 50/60Hz

Cooling

Capacity

2600(700~3500)

3500(700~4000)

5300(1000~6000)

7200(2400~8200)

Power input

715(170~1420)

1020(190~1460)

1500(250~2370)

2180(450~3280)

Heating

Capacity

3600(700~3800)

4150 (800~4600)

6200(1200~6800)

8600W(2100~9600)

Power input

920(170~1360)

1200(190~1570)

1650(300~2460)

2400(400~3650)

Compressor

Type

ASN98D22UFZ

ASM135D23UFZ

ATF235D22UMT

Quantity

Oil type

ESTER OIL VG74

450ML

POE(VG74) 670ML

Start-up method

soft start

Fan

Type

ZKFN-20-8-1

ZKFN-34-8-1

WZDK56-38G-W

WZDK80-38G-W(A)

Motor type

DC motor

Quantity

Motor output

0.02

0.034

0.056

0.08

Static pressure

Airflow rate

m3/h

1718

2283

3715

Drive type

External Drive

Refrigerant

Type

R410A

Factory charge

850

1050

1600

1800

Throttle

type

Throttle valve throttling

Pipe

connections

Liquid pipe

Φ6.4

Gas pipe

Φ9.5

Φ12.7

Φ15.9

Sound pressure level

dB(A)

Net dimensions (W×H×D)

722×555×260

795×555×287

910×712×345

Packed dimensions (W×H×D)

845×610×390

915×610×420

1045×800×485

Net weight

29.5

Gross weight

32.5

Ambient

temp.

operation

range

Cooling

10~55

Heating

-15~24

Controller

WDC-86E/KD

Note:

1. The design implementation standard of this unit is GB/T 18836-2017.

2. The parameters in the table are the nominal values tested under the rated working conditions specified in GB/T 18836-2017, and actual

operating parameters will vary with the working conditions.

3. The above parameters may change due to product improvement. Please refer to the nameplate parameters of the product.

MCAC-UTSM-202006 Midea LC3 Series DC Inverter Air conditioner Technical Service Manual

Table 1.2: MCR3-X (90,105,140,160)M specifications

9.0

10.5

14.0

16.0

Model name

MCR3-X 90M

MCR3-X 105M

MCR3-X 140M

MCR3-X 160M

Power supply

1-phase, 220-240V, 50/60Hz

Cooling

Capacity

9000

10500

14000

16000

Power input

2750

3000

4650

5500

Heating

Capacity

10000

11600

16000

18000

Power input

2900

3000

4500

5350

Compressor

Type

KTM240D57UMT

ATF400D64UMTC

ATF400D64UMV

Quantity

Oil type

ESTER OIL VG74 670ml

POE(VG74) 800ML

POE(VG74) 1000ML

Start-up method

soft start

Fan

Type

ZKFN-80-8-3

WZDK170-38G-1

ZKSP-170-8-9

Motor type

DC motor

Quantity

Motor output

0.08

0.17

Static pressure

Airflow rate

m3/h

3715

5086

5395

Drive type

External Drive

Built-in Drive

Refrigerant

Type

R410A

Factory charge

1900

3000

3200

3800

Throttle

type

Throttle valve throttling

Pipe

connections

Liquid pipe

Φ9.5

Gas pipe

Φ15.9

Sound pressure level

dB(A)

Net dimensions (W×H×D)

910x712x345

950x840x360

1040x865x410

Packed dimensions (W×H×D)

1045×810×485

1025×950×510

1120×980×560

Net weight

78.5

Gross weight

76.5

101

Ambient

temp.

operation

range

Cooling

10~55

Heating

-15~24

Controller

WDC-86E/KD

Note:

1. The design implementation standard of this unit is GB/T 18836-2017.

2. The parameters in the table are the nominal values tested under the rated working conditions specified in GB/T 18836-2017, and actual

operating parameters will vary with the working conditions.

3. The above parameters may change due to product improvement. Please refer to the nameplate parameters of the product.

Midea LC3 Series DC Inverter Air conditioner Technical Service Manual MCAC-UTSM-202006

2. Dimension (Unit: mm)

MCR3-X 26M/ MCR3-X 35M/ MCR3-X 53M

Model

722

453

302

327

260

135

555

300

35/53

795

514

340

365

287

125

555

330

MCR3-X 71M/ MCR3-X 90M

Model

71/90

910

982

390

345

120

663

712

375

426

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