Please read this manual carefully before installation and keep it for future reference. Installation & Owner’s Manual DIY E Star™ Series ® Due to updates and constantly improving performance, the information and instructions within this manual are subject to change without notice. Please visit www.mrcool.com/documentation to ensure you have the latest version of this manual.
Contents ! Safety Precautions Warnings .................................................................................................................................. Cautions ................................................................................................................................... 1 Parts Overview 2 Operating Instructions 3 3 4 Parts Diagram .........................................................................................................................
Contents 4 Indoor Unit Installation ...........16 1. Selecting an installation location .........16 17 17 4. Prepare refrigerant piping ....................19 5. Mount indoor unit ..................................19 5 Outdoor Unit Installation ...... 20 1. Selecting an installation location ..... 20 2. Install drain joint ................................ 21 22 Refrigerant Piping Connections .................... 24 1. Prepare Exterior Wall Hole ............................................... 24 2.
! Safety Precautions Read Before Using Incorrect usage may cause serious damage or injury. The symbols below are used throughout this manual to indicate instructions that should be followed closely or actions that should be avoided to prevent death, injury, and/or property damage. This symbol indicates ignoring instructions may cause death or serious injury. WARNING This symbol indicates ignoring instructions may cause bodily injury, damage to the unit, or other surrounding property.
Safety Precautions DO NOT pull the power cord to unplug the unit. Hold the plug firmly and pull it from the outlet. Pulling directly on the cord can damage it, which could lead to fire and/or electric shock. DO NOT modify the length of the power supply or use an extension cord to power the unit. 1. Installation must be performed according to the installation instructions. Improper installation could cause water leakage, electrical shock, fire, and could void the warranty. 2.
Safety Precautions WARNING for Using R-32/R-290 Refrigerant 1. When flammable refrigerants are employed, the appliance should be stored in a well-ventilated area where the size of the room corresponds to the area size required for the operation of the unit. • For R-32 refrigerant models: The appliance should be installed, operated, and stored in a room with a floor area larger than 4m2. The appliance should not be installed in an unventilated space, if the space is smaller than 4m2.
Parts Overview 1 Safety Precautions NOTE: The installation must be performed in accordance with the requirement of local and national standards. The installation may be slightly different in different areas. Indoor Unit (Interior/Air Handler) Front Panel Electrical Access Air inlet rear Air Filter Wall Mounting Plate Air outlet bottom Quick Connect® Line Set (refrigerant pipe) Pat. https://mrcool.
Overview - Indoor Unit Display NOTE: Different models will have a different front panel and display window. Not all of the features listed below will be equipped on the unit you have purchased. Please check the indoor unit display window of the unit purchased to see which of these features your unit has. Illustrations in this manual are for explanatory and demonstration purposes only. The actual shape of your and size of your indoor unit may be different.
Accessories The listing below shows the accessories and parts (these may vary depending on purchase & options). Use all of the installation parts and accessories to install the system. Improper installation may result in water leakage, electrical shock, fire, and/or equipment failure. PART LOOKS LIKE...
Accessories PART QUANTITY LOOKS LIKE... Please read this manual carefully before installation and keep it for future reference. Owner’s Manual Installation & Owner’s Manual 1 E-Star™ DIY Series For more details visit www.MrCool.com Please read this manual carefully before installation and keep it for future reference. Remote Control Manual Remote Control User Manual 1 For more details visit www.MrCool.
Safety Precautions Operating Instructions Operating Temperature Ranges Room Temperature Outdoor Temperature 2 COOL Mode HEAT Mode DRY Mode 62°F - 90°F (17°C - 32°C) 32°F - 86°F (0°C - 30°C) 50°F - 90°F (10°C - 32°C) 12K-24K Capacity -13°F - 122°F (-25°C - 50°C) 12K-24K Capacity -13°F - 75°F (-25°C - 24°C) 36K Capacity 5°F - 122°F (-15°C - 50°C) 36K Capacity 5°F - 75°F (-15°C - 24°C) 32°F - 122°F (0°C - 50°C) NOTES: • If the air conditioner operates for extended periods in cooling mode and th
Operating Instructions Airflow Directional Control of the vertical and horizontal louvers · Adjustment will change airflow direction of the indoor unit to prevent discomfort and/or uneven room temperatures. · Adjust the vertical louver using the remote. the horizontal louver manually by · Adjust hand. Vertical Louver Range Fig. 2.2 Adjust Vertical Airflow (Up/Down) using Vertical Louver (Fig 2.
Operating Instructions How the Air Conditioner Works SLEEP operation Basic Operation Modes: AUTO / COOL / DRY / HEAT (Model Dependent). AUTO Mode: When you set the unit in AUTO mode, it will automatically select COOL, HEAT, or FAN-ONLY mode depending on the set temperature and the room temperature. 8 hours timer OFF The unit will control the room temperature automatically, according to the temperature you set the unit to.
Operating Instructions Special Functions Refrigerant Leakage Detection (some units): Louver Angle Memory Function (some units): Anti-Mildew Function (some units): When the unit is turned off, in COOL, DRY, or AUTO (COOL) modes, it will continue to operate at very low power. This is to aid in drying any condensation that has formed inside the unit to prevent mildew growth.
Operating Instructions Care and Maintenance 3 CAUTION The power supply must be disconnected before attempting any kind of cleaning or service. Before performing maintenance, turn the power off to the unit and then disconnect the power to the circuit at the breaker. Failure to do this could cause electrical shock and injury. DO NOT use benzene, thinner, polishing powder, or similar solvents for cleaning. These could cause the plastic to deform and/or crack.
Care and Maintenance 3. Then, extract the filter by gently drawing it downward. Replace as necessary. 3 4. Unclip the small air freshening filter from the larger air filter. Replace if necessary. Otherwise, clean it with a vacuum and clip it back into place after cleaning the larger air filter as outlined in step 5. 5. Clean the large air filter with warm, soapy water. Be sure to use a mild detergent and rinse with fresh water. Shake off the excess water and allow it to dry in a cool area. 6.
Installation Summary - Indoor Unit Indoor Unit Installation 4 DO NOT install the indoor unit in the following locations: Installation Instructions – Indoor Unit Near any source of heat, steam, or combustible gas. PRIOR TO INSTALLATION: Before installing the indoor unit, refer to the label on the product box to make sure that the model numbers of the indoor unit and outdoor unit match.
Indoor Unit Installation Refer to Fig. 4.2 to ensure proper distance from walls, ceiling, and floor when mounting unit: Minimum Ceiling Clearance 5.9 in (15 cm) Minimum Side Clearance 4.75 in (12 cm) Minimum Side Clearance 4.75 in (12 cm) *For Ceilings GREATER than 9 ft., recommended distance from floor 90.55 in (230 cm) Fig. 4.1 *For Ceilings LESS than 9 ft., recommended distance from floor 78.
Indoor Unit Installation Correct orientation of Mounting Plate NOTE REGARDING WALL STUDS • Wall Mounting Bracket should be installed on studs. • Standard U.S. studs are 16 in (406.4 mm) on center. • Studs that are 16 in (406.4 mm) on center correlates with the holes marked “US” on the metal bracket. 15.78 in (401 mm) 9.01 in (229 mm) 4.96 in (126 mm) 1.65 in (42 mm) 11.69 in (297 mm) MOUNTING PLATE DIMENSIONS Different models have different mounting plates.
Indoor Unit Installation Step 4: Prepare indoor unit refrigerant piping Step 5: Mount the Indoor Unit The piping of the indoor unit is attached to the back of the unit towards the bottom. It will be covered with insulation, and there will also be a drain pipe with these. This piping will need to be bent and prepared before it can be fed through the wall hole. In the following steps the indoor unit will now be mounted to the wall bracket and the piping and wires will be fed through the wall hole.
Indoor Unit Installation Outdoor Unit Installation Minimum Clearance above unit: 24 in (60 cm) Minimum Clearanc e in front o f the unit : 79 in (20 0 cm) 5 Minimum Clearance between the back of the unit and wall: **Ground Installed: 12 in (30 cm) **Bracket Installed: 6 in (15 cm) Minimum Clearance on the left side of unit: 12 in (30 cm) Minimum Clearance on the right side of the unit: 24 in (60 cm ) Fig. 5.
Outdoor Unit Installation If the drain joint comes with a rubber seal (see Fig. 5.4 - A), do the following: SPECIAL CONSIDERATIONS FOR EXTREME WEATHER If the unit is exposed to heavy wind: Install the unit so the air outlet fan is at a 90° angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it from extremely heavy winds. Ensure the wind barrier does not block necessary airflow. See Fig. 5.2 and Fig. 5.3 below. Strong wind 1.
Outdoor Unit Installation TOP VIEW FRONT VIEW A Air Inlet D Air Inlet H B Air Outlet W Fig. 5.5 Step 3: Anchor Outdoor Unit UNIT MOUNTING DIMENSIONS The outdoor unit can be anchored to the ground or to a wall-mounted bracket using M-10 bolts. Prepare the installation base of the unit according to the dimensions below. For instructions of how to mount the unit to a wall mounted bracket, please refer to the following page.
Outdoor Unit Installation If you are installing the unit on a wall-mounted bracket, follow these steps: Before installing a wall-mounted unit, make sure that the wall is made of solid brick, concrete, or a similarly strong material. The wall must be able to support at least 4 times the weight of the unit. 1. Mark the position of the bracket holes based on the dimensions in the Mounting Dimensions chart on the previous page. 2. Pre-drill the holes for the expansion bolts. 3.
Refrigerant Piping Connection Step 1: Prepare exterior wall hole Before the refrigerant piping can be installed and connected to the indoor and outdoor units, some additional steps are required to prepare the exterior. 1. Install finishing ring/cap to the exterior portion of the wall hole. 2. Place your hand on the underside of the piping coming through the exterior wall hole (from indoor unit), close to the wall.
Refrigerant Piping Connection Step 3: Connect Line Set to Indoor Unit 3.1 Tools needed Refrigerant Pipe Connectors (both ends): NOTE: Depending on the capacity rating of your unit, (12K, 18K, 24K, 36K) the wrench sizes needed will vary, refer to the table below (the unit uses metric sizes, the standard sizes listed are approximations).
Refrigerant Piping Connection TORQUE REQUIREMENTS 1. Excessive force can break the connector or damage the refrigerant piping. You must not exceed the torque requirements shown in the table below. 2. You can find the Outer Pipe Diameter stamped (in inches) on the valve set of the condenser. Refer to this when finding and applying the torque values in the table below. 3. Please note that there may be differences in Torque Wrenches (i.e.
Refrigerant Piping Connection CAUTION For your safety, always wear goggles and work gloves when connecting the pipes. Step 4: Connect Line Set to the Outdoor Unit IMPORTANT: 1. First remove the water tray on the outdoor unit as shown in the illustration to the right. Before you continue, it is essential that you read the following instructions carefully. 2.
Refrigerant Piping Connection TORQUE REQUIREMENTS 1. Excessive force can break the connector or damage the refrigerant piping. You must not exceed the torque requirements shown in the table below. 2. You can find the Outer Pipe Diameter stamped (in inches) on the valve set of the condenser. Refer to this when finding and applying the torque values in the table below. 3. Please note that there may be differences in Torque Wrenches (i.e.
Refrigerant Piping Connection Step 5: Opening the refrigerant valves of the outdoor unit 1. Using the images below as a guide, remove the cover on the top valve, using a 19 mm open-ended wrench or a crescent (adjustable-type) wrench. Then, insert a 5 mm Allen key and open the valve by turning it counter-clockwise as far as it will go. DO NOT force it. The valve is now open. Screw the cover back onto the top valve and tighten it well to ensure that it is properly sealed. 2.
Refrigerant Piping Connection Step 6: Wrap Piping Connections In this step you will wrap and insulate the exposed line connections coming from the indoor air handler. IMPORTANT Do not complete these steps until all of the refrigerant piping connections have been checked for leaks. Wrapping the piping upward will prevent rain/moisture from seeping into the overlaps of the tape 1. Wrap the connectors at the indoor air handler tightly with the supplied sound deadening pads. Refrigerant piping 2.
Refrigerant Piping Connection Step 7: Connect Drain Pipe Make sure there are NO kinks or dents in the hose to ensure proper drainage. In this step you will connect the drain hose extension to the drain hose exiting from the indoor unit that is within the piping bundle you wrapped in the previous steps. 1. Securely connect the drain hose extension to the drain piping from the indoor unit. Fig. 6.3a NOT CORRECT KINKS in the drain hose will create water traps. 2. Using example Fig. 6.
Refrigerant Piping Connection Wrap piping & connections from indoor unit upward to exterior wall hole Quick Connect® Connections Drainage Pipe Quick Connect® Line Set (refrigerant pipe) Pat. https://mrcool.com/mrcool-patents/ MC Cable Sound Deadening Pads to wrap connections once connected and checked for leaks. Coiled, excess refrigerant line Outdoor Unit (Exterior / Condenser) BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
7 Electrical Connections Connect the MC Cable/signal wire and power cable NOTE: The outside unit’s terminal block is protected by an electrical wiring cover on the side of the unit. A comprehensive wiring diagram is printed on the inside of the wiring cover. ***BEFORE PERFORMING ANY ELECTRICAL WORK, TURN OFF ALL POWER TO THE SYSTEM.*** Note that the wire colors of this series/model may differ from previous models, other series and general wiring conventions.
Electrical Connections 1. Remove the screws from the electrical wiring cover from the outdoor condenser, as shown in the image below and Fig.7.2, and remove it. Outdoor Unit Wiring Diagram is located on the inside of the wire cover on the outdoor unit. Cover Fig. 7.2 2. Remove the retaining nut from the end MC cable that you fed through the wall hole earlier in the installation, as shown in the image below.
Electrical Connections 4. Now, secure the MC cable to the electrical cover by pushing the threaded end of the cable into the hole and reinstalling the retaining nut previously removed onto the end of the cable. Please refer to the images below. 6. Finally, reinstall the electrical wiring cover and secure it using by reinstalling the screws you previously removed. 5. Then, you will connect the wires to the terminal block.
88 Refrigerant Piping Connection Gas Leak Checks There are two different methods to check for gaseous leaks. Use Fig. 8.1 below as a guide for the critical points to check for leaks. Soap and Water Method WARNING – RISK OF ELECTRICAL SHOCK ALL WIRING MUST BE INSTALLED BY A LICENSED ELECTRICIAN AND COMPLY WITH LOCAL, STATE, AND NATIONAL ELECTRICAL CODES.
Test Run Refrigerant Piping Connection 9 Before Test Run Only perform test run after you have completed the following steps: • Electrical Safety Checks - Confirm that the unit’s electrical system is safe and operating properly. • Gas Leak Checks - Check all refrigerant piping/line set connections and confirm that the system is not leaking. • Confirm that the gas and liquid (high and low pressure) stop valves are fully open.
Test Run DOUBLE-CHECK PIPE CONNECTIONS During operation, the pressure of the refrigerant circuit/piping will increase. This may reveal leaks that were not present during your initial leak check. Take time during the Test Run to double-check that all refrigerant pipe connection points do not have leaks. Refer to Gas Leak Check section for instructions. 5. After the Test Run is successfully completed, and you confirm all check points in List of Checks to Perform have passed, do the following: a.
The following events may occur during normal operation, and may not indicate a malfunction. Symptom Unit does not turn on when pressing ON/OFF button. The unit changes from COOL/HEAT mode to FAN mode. The indoor unit emits white mist. Indoor and outdoor units emit a white mist. The indoor unit makes noises. Indoor unit and outdoor unit make noises. The outdoor unit makes noises. Dust is emitted from the indoor or outdoor unit.
WARNING In the case of any of the following, turn off the unit immediately! · Signal/power cable is damaged or abnormally warm · Burning odor · Loud or abnormal sounds · A power fuse or circuit breaker trips frequently · Water or other objects fall into or out of the unit DO NOT ATTEMPT TO CORRECT OR FIX THESE ITEMS YOURSELF! CONTACT AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY! Before calling for service assistance, troubleshoot a problem by performing the following checks: Symptom Possible Causes Temper
Symptom Solution Indicator lamps continue flashing Error code appears and begins with the letters, as shown below in window display of the indoor unit: • EH(xx), EL(xx), EC(xx) • PC(xx) The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes appear, wait for roughly 10 minutes. The problem may resolve itself. If not, disconnect the power, then connect it again. Turn the unit on.
For other errors: The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a temperature reading. Troubleshooting: Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires replacement. If the unit responds, the display board requires replacement. LED flash frequency: ... ... Error Display (For Some Outdoor Units) There are 2 LED lights (RED color and GREEN color) welded in outdoor main board.
Troubleshooting by Error Code 10.1 Error Code: EH 00/EC 51 (EEPROM parameter error diagnosis and solution) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB • Outdoor PCB Troubleshooting and repair: Shut off the power supply and turn it back on after 2 minutes. Is it still displaying the error code? NO The unit is operating normally. . YES Replace the indoor main PCB (EH 00) or outdoor main PCB (EC 51).
10.2 Error Code: EL 01 (Indoor and outdoor unit communication error diagnosis and solution) Description: Indoor unit can not communicate with outdoor unit Recommended parts to prepare: • Indoor PCB Note: For certain models, outdoor PCB • Outdoor PCB could not be removed separately. In this • Short-circuited component case, the outdoor electric control box Troubleshooting and repair: should be replaced as a whole. Power off, then restart the unit after 2 minutes.
Remarks: • Use a multimeter to test the DC voltage between 2 port(or S or L2 port) and 3 port(or N or S port) of the outdoor unit. The red pin of the multimeter connects with 2 ports (or S or L2 port) while the black pin is for 3 port (or N or S port). • When AC is normal running, the voltage is moving alternately as positive values and negative values • If the outdoor unit has malfunction, the voltage has always been the positive value.
10.3 Error Code: EH 02 (Zero crossing detection error diagnosis and solution) Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time. Note: For certain models, the outdoor PCB cannot Recommended parts to prepare: be removed separately. In this case, the outdoor • Connection wires electric control box should be replaced as a whole. • PCB Troubleshooting and repair: Check the connections and the power supply. Is it normal? Correct the connections.
Index: 1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in the fan motor connector. If the value of the voltage is not in the range shown in the table below, the PCB needs to be replaced. • DC motor voltage input and output (voltage: 220-240V~): No. Color Signal Voltage 1 Red Vs/Vm 280V~380V 2 --- --- --- 3 Black GND 0V 4 White Vcc 14-17.5V 5 Yellow Vsp 0~5.6V 6 Blue FG 14-17.
10.5 Error Code(s): EH 60/EH 61/EC 52/EC 53/EC 54/EC 56 (Open circuit or short circuit of temperature sensor diagnosis and solution). Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code. Recommended parts to prepare: • Connection wires • Sensors • PCB Troubleshooting and repair: Check the connection between temperature sensor and PCB. Is it properly wired? NO Ensure proper connections.
10.6 Error Code: EH 0b (Indoor PCB / Display board communication error diagnosis and solution) Derscription: Indoor PCB does not receive feedback from the display board. Recommended parts to prepare: • Communication wire • Indoor PCB • Display board Troubleshooting and repair: Power off, then restart the unit 2 minutes later. Is it still displaying the error code? NO The unit functions normally. YES Check the wirings and connections Are all the connections good? NO Ensure a proper connection.
10.7 Error Code: EL 0C (Refrigerant Leakage Detection diagnosis and solution) Description: Measure the evaporator coil temperature (T2) of the compressor as it just starts running as Tcool. In the initial 5 minutes after the compressor starts up, if the following events occur 3 times, the LED will display the error code and the A/C will turn off.; if T2
10.8 Error Code: PC 00 (IPM malfunction or IGBT over-strong current protection diagnosis and solution) Description: When the voltage signal that the IPM sends to the compressor drive chip is abnormal, the LED will display the failure code and the A/C will turn off. Recommended parts to prepare: • Connection wires • IPM module board • Outdoor fan assembly • Compressor • Outdoor PCB Troubleshooting and repair: Check the wiring between the PCB and compressor.
10.9 Error Code: PC 01 (Over voltage or too low voltage protection diagnosis and solution) Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Recommended parts to prepare: • Power supply wires • IPM module board • PCB • Reactor Troubleshooting and repair: Check the power supply. . Is it in working order? NO Turn off the unit. YES Check the connections and wires. Ensure proper connections or replace the wires.
10.10 Error Code: PC 02 (High temperature protection of IPM module or High pressure protection diagnosis and solution) Description: If the temperature of the IPM module is higher than a certain value, the LED displays the failure code. For some models with a high pressure switch, the outdoor pressure switch will cut off the system because the pressure is higher than 4.4 MPa. If this occurs, the LED will display the failure code.
10.10 Error Code: PC 02 (Cont.) High pressure protection Are the high pressure switch and main control board wired correctly? NO Connect the high pressure switch and main control board. YES Is the high pressure protector broken? Testing method: Disconnect the . plug. Measure the resistance of the high pressure protector. , If the protector is normal the value is 0. Does a problem still exist? ? NO Replace high pressure protector.
10.11 Error Code: PC 03 (Low pressure protection diagnosis and solution) Description: Outdoor pressure switch cut off the system because pressure has become lower than 0.13 MPa. If this occurs, the LED will display the failure code.
10.12 Error Code: PC 04(Inverter compressor drive error diagnosis and solution) Description: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
10.13 Error Code: PC 08 (Overload current protection diagnosis and solution) Description: An abnormal current rise is detected by checking the specified current detection circuit. Recommended parts to prepare: • Outdoor PCB • Connection wires • Compressor Troubleshooting and repair: Check the power supply. Is it in working order? NO Stop the unit.. YES Check the system for blockages. Do any exist? Clear the blockage. YES NO Check the compressor resistance values.
Refrigerant Piping Connection EU Disposal Guidelines 11 The marking shown below when depicted on the product or its literature, indicates that electrical waste and electrical equipment should not be mixed with general household waste. Correct Disposal of This Product (Electrical Waste & Electronic Equipment) This appliance contains refrigerant and other potentially hazardous materials. When disposing of this appliance, the law requires special collection and treatment.
DIY® E Star™ Series Due to updates and constantly improving performance, the information and instructions within this manual are subject to change without notice. Please visit www.mrcool.com/documentation to ensure you have the latest version of this manual.