Midea DLCSRAH12AAJ, DLCSRAH09AAK, DLCSRAH12AAK, DLCSRAH09AAJ, DLCSRAH24AAK Installation Instructions Manual

...

DLCSRA

INSTALLATION INSTRUCTIONS

Outdoor Unit Ductless Split System − Sizes 09 to 36

NOTES:

Read the entire instruction manual before starting the installation. Images are for illustration purposes only. Actual models may differ

slightly.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 2.............................

PARTS LIST 3...........................................

SYSTEM REQUIREMENTS 4...............................

WIRING 5...............................................

DIMENSIONS − OUTDOOR 6..............................

CLEARANCES − OUTDOOR 7.............................

INSTALLATION TIPS 8....................................

OUTDOOR UNIT INSTALLATION 8.........................

ELECTRICAL DATA 11...................................

CONNECTION DIAGRAMS 11.............................

SYSTEM VACUUM AND CHARGE 12.......................

START−UP 13............................................

TROUBLESHOOTING 13..................................

Specifications subject to change without notice.

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air−conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics should install, start−up, and service this equipment.

Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be performed by trained service personnel.

When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment.

Follow all safety codes. Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher nearby when brazing. Use care in handling, rigging, and setting bulky equipment.

Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements.

Recognize safety information. This is the safety−alert symbol you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNING, and CAUTION. These words are used with the safety−alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

. When

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.

WARNING

EXPLOSION HAZARD

Failure to follow this warning could result in death, serious personal injury, and/or property damage.

Never use air or gases containing oxygen for leak testing or operating refrigerant compressors. Pressurized mixtures of air or gases containing oxygen can lead to an explosion.

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Do not bury more than 36 in. (914 mm) of refrigerant pipe in the ground. If any section of pipe is buried, there must be a 6 in. (152 mm) vertical rise to the valve connections on the outdoor units. If more than the recommended length is buried, refrigerant may migrate to the cooler buried section during extended periods of system shutdown. This causes refrigerant slugging and could possibly damage the compressor at start−up.

2 32801000801

Specifications subject to change without notice.

PARTS LIST

Table 1—Parts List

Part No. Part Name Qty.

1 Outdoor unit 1

- Literature package including installation instructions and warranty 1

- Grommet to help fix the outdoor unit (helps with vibration prevention during operation) 4

- Drain Joint 1

- Drain Hose 1

■ Outdoor

Fig. 1 - Parts List

NOTES:

If the outdoor unit is higher than the indoor unit, prevent rain from flowing into the indoor unit along the connection pipe by making a downward arc in the connection pipe before it enters the wall to the indoor unit. This will ensure that rain will drip from the connection pipe before it enters the wall. Piping and the interconnecting wiring are field supplied. Figure 1 is only a sketch. Different models may differ slightly.

T able 2 lists the units covered in this document.

Table 2—Unit Sizes

SYSTEM TONS kBTUh VOLTAGE - PHASE OUTDOOR MODEL

0.75 9,000 115-1 DLCSRAH09AAJ

1.00 12,000 115-1 DLCSRAH12AAJ

0.75 9,000 208/230-1 DLCSRAH09AAK

1.00 12,000 208/230-1 DLCSRAH12AAK

1.50 18,000 208/230-1 DLCSRAH18AAK

2.00 24,000 208/230-1 DLCSRAH24AAK

2.50 30,000 208/230-1 DLCSRAH30AAK

3.00 36,000 208/230-1 DLCSRAH36AAK

32801000801 3

Specifications subject to change without notice.

SYSTEM REQUIREMENTS

Allow sufficient space for airflow and service of the unit. See Fig. 3 for the required minimum distances between the unit, walls or ceilings.

Piping IMPORTANT: Both refrigerant lines must be insulated separately.

S Table 3 contains piping information for the product covered within this document.

T able 3—Piping And Refrigerant Information

System Size

Min. Piping Length ft.(m) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3)

Standard Piping Length

Max. Outdoor - indoor height difference (OU higher than IU)

Max. Outdoor - indoor height difference (IU higher than OU)

Max. Piping Length with no additional refrigerant charge per System (Standard Piping length)

Piping

Total Max. Piping Length per system

Additional refrigerant charge (between Standard – Max piping length)

Suction Pipe (size - connection type)

Liquid Pipe (size - connection type)

Refrigerant Type Ty pe R410A R410A R410A R410A R410A R410A R410A R410A

ft.(m)

ft.(m) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5)

ft.(m) 82 (25) 82 (25) 82 (25) 82 (25) 98 (30) 98 (30) 164(50) 213(65)

Oz/ft

(g/m)

(mm)

(115V)

24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5)

33 (10) 33 (10) 33 (10) 33 (10) 66 (20) 66 (20) 82(25) 98(30)

0.16(15) 0.16(15) 0.16(15) 0.16(15) 0.16(15) 0.32(30) 0.32(30) 0.32(30)

3/8 (9.52) 1/2 (12.7) 3/8 (9.52) 1/2 (12.7) 1/2 (12.7) 5/8 (15.9) 5/8 (15.9) 5/8 (15.9)

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

12K

(115V)9K(208/230V)

12K

(208/230V)

18K

(208/230V)

23K

(208/230V)

30K

(208/230V)

36K

(208/230V)

Heat Pump Models Charge Amount

Refrigerant

All outdoor units have an electronic expansion valve to manage the refrigerant flow of the fan coil connected.

Oz’s

39.8(1.1) 42.3(1.15) 52.9(1.5) 52.9(1.5) 68.78(1.95) 91.7(2.6) 97 (2.75) 119.9(3.4)

(kg)

4 32801000801

Specifications subject to change without notice.

WIRING

All wires must be sized per NEC (National Electrical Code) or CEC (Canadian Electrical Code) and local codes. Use Electrical Data table MCA (minimum circuit amps) and MOCP (maximum over current protection) to correctly size the wires and the disconnect fuse or breakers respectively.

Recommended Connection Method for Power and Communication Wiring:

The main power is supplied to the outdoor unit. The field supplied 14/3 stranded wire with ground with a 600 volt insulation rating, power/communication wiring from the outdoor unit to indoor unit consists of four (4) wires and provides the power for the indoor unit. T wo wires are line voltage AC power, one is communication wiring (S) and the other is a ground wire. Wiring between indoor and outdoor unit is polarity sensitive. The use of BX wire is NOT recommended.

If installed in a high Electromagnetic field (EMF) area and communication issues exists, a 14/2 stranded shielded wire can be used to replace L2/N and (S) between outdoor unit and indoor unit landing the shield onto ground in the outdoor unit only.

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Wires should be sized based on NEC and local codes.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Be sure to comply with local codes while running wire from the indoor unit to the outdoor unit.

Every wire must be connected firmly. Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also exist. Ensure all wiring is tightly connected.

No wire should touch the refrigerant tubing, compressor or any moving parts.

Disconnecting means must be provided and shall be located within sight and readily accessible from the air conditioner.

Connecting cable with conduit shall be routed through the hole in the conduit panel.

CAUTION

32801000801 5

Specifications subject to change without notice.

DIMENSIONS − OUTDOOR

System Size

Height

(H)

Width

(W)in(mm)

Depth

(D)

Outdoor Unit

Weight

-Net

(mm)

lbs.

(kg)

(115)

21.85 (555)

30.31 (770)

11.81 (300)

19.2

(487)

11.73 (298)

67.9

(30.8)

12K

(115V)

21.81 (554)

31.5

(800)

13.11 (333)

20.24 (514)

13.39 (340)

80.7

(36.6)

(208/230V)

Fig. 2 - Outdoor Unit

Table 4—Unit Sizes

21.81 (554)

31.5

(800)

13.11

(333)

20.24

(514)

13.39

(340)

90.8

(41.2)

12 K

(208/230V)

Unit

21.81 (554)

31.5

(800)

13.11

(333)

20.24

(514)

13.39

(340)

91.7

(41.6)

18K

(208/230V)

27.64 (702)

33.27

(845)

14.29

(363)

21.26

(540）

13.8

(350）

113.3

(51.4)

23K

(208/230V)

31.89 (810)

37.24 (946)

16.54 (420)

26.5

(673）

15.87

403）

141.1

(64)

30K

(208/230V)

31.89 (810)

37.24 (946)

16.54 (420)

26.5

(673）

15.87

(403）

137.8

(62.5)

36K

(208/230V)

31.89 (810)

37.24

(946)

16.54

(420)

26.5

(673）

15.87

403）

143.3

(65)

6 32801000801

Specifications subject to change without notice.

CLEARANCES − OUTDOOR

Air-outlet

Fig. 3 - Outdoor Unit Clearance

T able 5—Outdoor Unit Clearance Dimensions

UNIT

A 24 (610) B 24 (610) C 24 (610) D 4 (101) E 4 (101)

NOTE: The outdoor unit must be mounted at least 2in. (50mm) above the maximum anticipated snow depth.

MINIMUM VALUE

in. (mm)

Air-inlet

9.8in (25cm) or more for proper airow 24in (61cm) or more is recommended for service

9.8in (25cm) or more 24in (61cm) or more is recommended for service

32801000801 7

118in (300cm) or more

59in (150cm) or more on a multiple parallel unit arrangement 24in (61cm) or more on a single parallel unit arrangement

24in (60cm) or more

Fig. 4 - Clearances for multiple units

Specifications subject to change without notice.

19in (48cm) or more on a multiple parallel unit arrangement 4in (10cm) or more on a single parallel unit arrangement

INSTALLATION TIPS

Ideal installation locations include: Outdoor Unit

S A location which is convenient to installation and not exposed to

strong wind.

S A location which can bear the weight of outdoor unit and where the

outdoor unit can be mounted in a level position.

S A location which provides appropriate clearances (see Fig. 3). S Do not install the indoor or outdoor units in a location with special

environmental conditions. For those applications, contact your Ductless Split representative.

Avoid sags in the suction line to prevent the formation of oil

traps. Insulate

each tube with minimum 3/8−in. (10 m m) wall thermal pipe insu lation. Inserting the tubing into the insulation before making

the co n nectio ns will

save time and improve installation quality.

1. Remove the service valve cover, if provided with the unit.

2. Cut the pipe, with a pipe cutter, at 90 degrees (see Fig. 6).

3. Remove the service connection, if provided with the unit.

Oblique

Roughness

Burr

OUTDOOR UNIT INSTALLATION

1. Use a rigid base to support unit in a level position.

2. Locate outdoor unit and connect piping and wiring.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

In regions with snowfall and cold temperatures, avoid installing the outdoor unit in areas where it can be covered by snow. If the outdoor unit is installed in areas where heavy snow is expected, a field supplied ice or snow stand and/or field supplied−installed wind baffle should be installed to protect the unit from snow accumulation and/or blocked air intake. Blocking the air intake may result in reduced airflow, significantly reduced performance and damage to the equipment.

NOTE: Install the outdoor unit on a rigid base to reduce noise levels and vibration. Determine the optimal air outlet direction to prevent discharged air from being blocked. If the installation site is exposed to strong winds such as a coastal areas, ensure the fan’s proper operation by installing the unit lengthwise along the wall or use dust or shield plates. If the unit needs to be suspended, the installation bracket should comply with the suspension requirements in the installation bracket diagram. The installation wall should be solid brick, concrete or the same intensity construction, or take steps to reinforce and dampen the support. The connection between the bracket and the wall as well as the bracket and the air conditioner should be firm, stable and reliable. Ensure there is no obstacle which may block the radiating air.

MAKE REFRIGERANT PIPING CONNECTIONS (OUTDOOR UNIT)

IMPORTANT: Use refrigeration grade tubing ONLY. No other type of tubing may be used. Use of other types of tubing will void manufacturer’s warranty.

Do not open service valves or remove protective caps from tubing ends until all the connections are made.

Bend tubing with bending tools to avoid kinks and flat spots. Keep the tubing free of dirt, sand, moisture, and other contaminants

avoid damaging the refrigerant system.

CAUTION

Strong

wind

Fig. 5 - High Wind Installation

A07350

A150767

Fig. 6 - Cut the Pipe

4. Remove all the burrs from the cut cross section of the pipe avoiding any burrs inside the tubes.

5. Remove the flare nuts attached to the indoor and outdoor units.

6. Install the correct size flare nut onto the tubing and make a flare connection. Refer to Table 6 for the flare nut spaces.

T able 6—Flare Nut Spacing

OUTER DIAM. (mm)

Ø1/4”(6.35) 0.05 (1.3) 0.03(0.7) Ø3/8”(9.52) 0.06 (1.6) 0.04(1.0) Ø1/2”(12.7) 0.07 (1.8) 0.04(1.0)

Ø5/8”(15.88) 0.09 (2.2) 0.08(2.0)

Bar

Copper pipe

Max. Min.

"A"

Bar

Clamp handle

A (mm)

Handle

Yoke

Cone

Red arrow mark

A150768

Fig. 7 - Flare Nut Spacing

7. Apply a small amount of refrigerant oil to the flare connection on the tubing.

8. Align center of the pipes and/or service valve.

Indoor unit tubing Flare nut Piping

A150769

Fig. 8 - Align Pipe Center

9. Connect both the liquid and gas piping to the indoor unit

10. Tighten the flare nut using a torque wrench as specified in the Table 7.

11. Complete the installation.

Table 7—Tightening Torque

PIPE DIAMETER

INCH (mm)

Ø1/4” (6.35) 10 to 13 13.6 to 17.6 Ø3/8” (9.52) 24 to 31 32.5 to 42.0 Ø1/2” (12.7) 37 to 46 50.1 to 62.3

Ø5/8” (15.88) 50 to 60 67.7 to 81.3

TIGHTENING TORQUE

Ft-lb N-m

8 32801000801

Specifications subject to change without notice.

Flare nut

Copper tube

Fig. 9 - Tighten the Flare Nut

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Excessive torque can break flare nut depending on installation conditions.

CAUTION

A150770

INSTALL ALL POWER AND INTERCONNECTING WIRING TO OUTDOOR UNITS

1. Mount outdoor power disconnect.

2. Run power wiring from main box to disconnect per NEC and local codes.

3. Remove field wiring cover from unit by loosening screws.

4. Remove caps on conduit panel.

5. Connect conduit to conduit panel (see Fig.10).

6. Properly connect both power supply and control lines to terminal block per the connection diagram for the appropriate unit capacity and voltage.

7. Ground unit in accordance with NEC and local electrical codes.

8. Use lock nuts to secure conduit.

9. Reinstall field wiring cover.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

S Be sure to comply with local codes while running wire

from indoor unit to outdoor unit.

S Every wire must be connected firmly. Loose wiring may

cause terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected.

S No wire should be allowed to touch refrigerant tubing,

compressor or any moving parts.

S Disconnecting means must be provided and shall be

located within sight and readily accessible from the air conditioner.

S Connecting cable with conduit shall be routed through

hole in the conduit panel.

CAUTION

Outdoor unit

Terminal Block

Over 1.57" (40mm)

Fig. 10 - Field Wiring

Conduit panel

Conduit

A07455

32801000801 9

Specifications subject to change without notice.

DRAIN CONNECTIONS

Install drains must meet local sanitation codes.

Install the outdoor unit drain joint

Fit the seal into the drain joint, then insert the drain joint into the base pan hole of the outdoor unit. Rotate 90 Connect the drain joint with an extension drain hose to avoid condensate from draining off the outdoor unit during heating mode.

_ to securely assemble them.

CAUTION

In cold climates, ensure the drain hose is as vertical as possible to ensure swift water drainage.

If water drains too slowly, it can freeze in the hose and flood the unit.

NOTE: Basepan built−in with multiple holes for proper draining during defrost. For applications where it is required to seal these holes, and re−direct the condensate drain, rubber plugs are available through RCD.

Seal

Drain joint

Base pan

Fig. 11 - Drain Joint

Images are for illustration purposes only.

Base pan hole

Seal

Drain

joint

T able 8—Base Pan Base Rubber Plugs

Outdoor Unit Model

Number

DLCSRAH09AAJ DLCSRAH12AAJ DLCSRAH09AAK DLCSRAH12AAK

DLCSRAH18AAK 12600801A00077 25

DLCSRAH24AAK DLCSRAH30AAK DLCSRAH36AAK

Base Pan Base

Rubber Plugs RCD

Part Number

12600801A00077 13

12600801A00117 5

Quantity per

Unit

10 32801000801

Specifications subject to change without notice.

ELECTRICAL DATA

MAR OUTDOOR UNIT SIZE 9K 12K 9K 12K 18K 24K 30K 36K

Power Supply

Compressor

Outdoor Fan

Motor

*Permissible limits of the voltage range at which the unit will operate satisfactorily.

LEGEND

FLA - Full Load Amps

MCA - Minimum Circuit Amps

RLA - Rated Load Amps

Volts-PH-Hz 115-1-60 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

Max – Min*

Oper. Voltage

MCA 15 15 9 9 18 20 20 25

Max Fuse/

CB AMP

Volts-PH-Hz 115-1-60 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

RLA 9.8 10.5 5.25 5.65 12.3 14 15 17

Volts-PH-Hz 115-1-60 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

FLA 0.6 0.6 0.38 0.38 0.42 0.5 0.6 0.6

Rated HP 0.053 0.053 0.053 0.053 0.067 0.085 0.085 0.085

Output 40 40 40 40 50 120 120 120

126-104 126-104 253-187 253-187 253-187 253-187 253-187 253-187

20 20 15 15 25 30 30 35

Table 9—Electrical Data

CONNECTION DIAGRAMS

Indoor Unit Power Supply

115-1-60

Indoor Signal High Voltage

115-1-60

CONNECTING CABLE

FIELD POWER SUPPLY

OUTDOOR TO INDOOR

Indoor Signal High Voltage

GND

L Main Power Supply

115-1-60

GND

Ground

Power to Indoor Unit

115-1-60

L1 L2

Indoor Unit Power Supply

208/230-1-60

Indoor Signal High Voltage

CONNECTING CABLE OUTDOOR TO INDOOR

GND

Ground

Power to Indoor Unit

208/230-1-60

9K and 12K 115V Indoor Unit 9K and 12K 115V Outdoor Unit 9K to 36K 230V Indoor Unit 9K to 36K 230V Outdoor Unit

Notes:

1. Do not use the thermostat wire for any connection between indoor and outdoor units.

2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.

Fig. 12 - Connection Diagrams

208/230-1-60 FIELD POWER SUPPLY

GND

Main

Indoor

Power Supply

Signal High

208/230-1-60

Voltage

A150732

32801000801 11

Specifications subject to change without notice.

SYSTEM VACUUM AND CHARGE

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Never use the system compressor as a vacuum pump.

Refrigerant tubes and the indoor coil should be evacuated using the recommended 500 microns deep vacuum method. The alternate triple evacuation method may be used if the procedure outlined below is followed.

NOTE: Always break a vacuum with dry nitrogen. Using Vacuum Pump

1. Completely tighten flare nuts A, B, C, D, connect manifold gage charge hose to a charge port of the low side service valve (see Fig. 13).

2. Connect charge hose to vacuum pump.

3. Fully open the low side of manifold gage (see Fig. 14).

4. Start the vacuum pump.

5. Evacuate using either deep vacuum or triple evacuation method.

6. After evacuation is complete, fully close the low side of manifold gage and stop operation of vacuum pump.

7. The factory charge contained in the outdoor unit is good for up to 25 ft. (8 m) of line length. For refrigerant lines longer than 25 ft. (8 m), add refrigerant, up to the allowable length, as specified in the System Requirements section.

8. Disconnect the charge hose from charge connection of the low side service valve.

9. Fully open service valves B and A.

10. Securely tighten caps of service valves.

Outdoor Unit

CAUTION

Refrigerant

Low Side

High Side

Service Valve

Fig. 13 - Service Valve

Manifold Gage

Indoor Uni

A07360

5000 4500 4000 3500 3000

LEAK IN SYSTEM

2500 2000

MICRONS

1500 1000

500

V ACUUM TIGHT TOO WET

TIGHT DRY SYSTEM

01234567

MINUTES

A95424

Fig. 15 - Deep Vacuum Graph

Triple Evacuation Method

The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in. of mercury vacuum and system does not contain any liquid water. Refer to Fig. 16 and proceed as follows:

1. Pump system down to 28 in. of mercury and allow pump to continue operating for an additional 15 minutes.

2. Close service valves and shut off vacuum pump.

3. Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig.

4. Close service valve and allow system to stand for 1 hr. During this time, dry nitrogen will be able to diffuse throughout the system absorbing moisture.

5. Repeat this procedure as indicated in Fig. 16. System will then be free of any contaminants and water vapor.

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

500 microns

Low side valve

Charge hose

Low side valve

Fig. 14 - Manifold

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the best way to assure a system is free of air and liquid water (see Fig. 15).

12 32801000801

High side valve

Charge hose

Vacuum pump

A07361

Final Tubing Check

IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.

Specifications subject to change without notice.

CHECK FOR TIGHT, DRY SYSTEM

(IF IT HOLDS DEEP VACUUM)

RELEASE CHARGE INTO SYSTEM

Fig. 16 - Triple Evacuation Method

EVACUATE

A95425

STAR T−UP

T est Operation

Perform test operation after completing gas leak and electrical safety check. See the indoor unit installation instructions and owner’s manual for additional start up information.

SYSTEM CHECKS

1. Conceal the tubing where possible.

2. Make sure that the drain tube slopes downward along its entire length.

3. Ensure all tubing and connections are properly insulated.

4. Fasten tubes to the outside wall, when possible.

5. Seal the hole through which the cables and tubing pass.

OUTDOOR UNIT

1. Are there unusual noises or vibrations during operation?

Explain the Following Items To Customer (with the aid of the Owner’s Manual):

1. Explain care and maintenance.

2. Present the installation instructions to customer.

TROUBLESHOOTING

For ease of service, the systems are equipped with diagnostic code display LEDs on both the indoor and outdoor units. The outdoor diagnostic display is two LEDs (Red and Green) on the outdoor unit board and is limited to very few errors. The indoor diagnostic display is a combination of flashing LEDs on the display panel or the front of the unit.

There may be a few error codes displayed in the indoor unit that might relate to the outdoor unit’s problems. If possible, always check the diagnostic codes displayed on the indoor unit first.

The diagnostic codes displayed in the outdoor units are listed in Table 10.

T able 10—Outdoor Unit Diagnostic Guides

GREEN LED RED LED FAILURE MODE

On X Standby, normal

X On Operation, normal

On On High/Low voltage protection on compressor terminal On ☆ EEPROM error

X ☆ The compressor speed is out of control

☆ On Zero-crossing signal detection error; lack of phase; synchronization error ☆ X IGBT or Module protection ☆ ☆ Communication error

☆ = Flashing, X = Off For additional diagnostic information, refer to the Service Manual

32801000801 13

Specifications subject to change without notice.

CMNA 1025 Cobb Place Blvd NW Kennesaw, GA 30152

14 32801000801

Specifications subject to change without notice.

Midea DLCSRAH12AAJ, DLCSRAH09AAK, DLCSRAH12AAK, DLCSRAH09AAJ, DLCSRAH24AAK Installation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual