Please read this manual carefully before installation and keep it for future reference. Installation & Owner’s Manual 4th Generation ® DIY Multi-Zone 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 4 Parts Diagram .........................................................................................................................
Contents 5 Indoor Unit Installation ........... 20 1. Selecting an installation location ......... 20 21 21 4. Prepare refrigerant piping .................... 23 5. Mount indoor unit .................................. 23 6 Outdoor Unit Installation ...... 24 1. Selecting an installation location ..... 24 2. Install drain joint ................................ 25 26 7 Refrigerant Piping Connections .................... 28 1. Prepare Exterior Wall Hole ..................................................
! 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 WARNING 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 CAUTION DO NOT allow the air conditioner to operate for extended periods of time with the doors or windows open, or in very high humidity. 1. Turn off the air conditioner and disconnect the power if it is not going to be used for an extended period of time. 2. Turn off and unplug the unit during storms. Note about Fluorinated Gases: 1. This unit contains fluorinated greenhouse gases. 2.
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 - Diagram Indoor unit 1. 2. 3. 4. 5. 6. 7. 8. 9. Panel frame Rear air intake grill Front panel Air purifying filter & Air filter (behind) Horizontal louver LCD display window Vertical louver Manual control button (behind front panel) Remote controller holder One-five One-four Outdoor unit 10. 11. 12. 13.
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 LOOKS LIKE... QUANTITY 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) 5°F - 122°F (-15°C - 50°C) 18K-36K -13°F - 75.2°F (-25°C - 24°C) 48K 5°F - 75.2°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 the humidity is high (over 80%), condensed water may drip out of the unit.
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 Horizontal Louver (Horizontal Airflow Grill inside) Fig. 2.3 Horizontal Louver Range Fig. 2.4 Adjust Vertical Airflow (Up/Down) using Vertical Louver (Fig 2.
Operating Instructions How the Air Conditioner Works SLEEP operation 8 hours timer OFF Set Temperature hour hour Fig. 2.5 SLEEP Operation While Cooling SLEEP operation 8 hours timer OFF Set Temperature hour hour Fig. 2.6 SLEEP Operation While Heating 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.
Operating Instructions Operation Mode Selection While two or more indoor units are operating simultaneously, make sure the modes selected on each of the units do not conflict with one another. The HEAT mode claims precedence over all of the other modes. If the unit initially started to operate in HEAT mode, the other units can only operate in HEAT mode. For example: If the unit initially started to operate under COOL or FAN mode, the other units can operate under any mode except HEAT.
Operating Instructions Mute Function (optional): Press the LED button on the remote control to turn off the LED display and silence the buzzer of the indoor unit to create a quiet environment. Page 15 mrcool.
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.
4 Installation Diagram More than 4.7 in (12 cm) 5 More than 4.7 in (12 cm) 4 More than 4.7 in (12 cm) 2 3 Air-break Switch Mounting screw ST3.9 × 25-C-H More than 6 in (15 cm) 1 Installation plate More than 4.7 in (12 cm) Clip anchor Air-break Switch Remote controller holder 2 1 Drainage Pipe 5 43 More than 24 in (60cm) Fig. 4.
Installation Diagram Line Set Length Specifications Number of units that can be used together Connected units 1-5 units Unit: feet (meters) Max. combined line set length for all rooms Max. line set length for one indoor unit Max. height difference between indoor & outdoor unit Max. height difference between indoor units 18K 2-Zone Condenser 123 ft (37.5 m) 73.8 ft (22.5 m) 32.8 ft (10 m) 33 ft (10 m) 27K 3-Zone Condenser 172.2 ft (52.5 m) 73.8 ft (22.5 m) 32.
Installation Summary - Indoor Unit Indoor Unit Installation 5 DO NOT install the indoor unit in any of the following locations: Installation Instructions – Indoor Unit 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 the outdoor unit match. Step 1: Selecting an installation location Before installing the indoor unit, you must choose an appropriate location.
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) *For Ceilings LESS than 9 ft., recommended distance from floor 78.55 in (200 cm) Fig. 5.
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 NOTE: Install the unit by following local codes and regulations, these may slightly differ between regions.
Outdoor Unit Installation If the drain joint comes with a rubber seal (see Fig. 6.4 - 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. 6.2 and Fig. 6.3 below. Strong wind 1.
Outdoor Unit Installation TOP VIEW FRONT VIEW A Air Inlet D Air Inlet H B Air Outlet Fig. 6.5 Step 3: Anchor Outdoor Unit 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.
7 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 NOTE The connection ports on the outdoor condenser are labeled A,B,C,D,E, etc. The capacities of the air handlers you use will determine which ports they should be connected to. The largest capacity air handler should be connected to the “A” port. Then, the next largest capacity air handler should be connected to the “B” port and so on.
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 CAUTION All of these steps must be completed BEFORE powering the unit, or else it could damage it. 1. Using the images below as a guide, remove the 2. Using the images below as a guide, repeat the cover on the top valve, using a 19 mm same process for the bottom valve. Remove the open-ended wrench or a crescent (adjustablecover on the bottom valve, using a 19 mm type) wrench.
Refrigerant Piping Connection 4. After completing steps 1 and 2, you will now need to check all of the piping connections (at indoor unit and outdoor unit) for leaks. You can do this by using leak detection spray, or applying a soapy water solution (liquid detergent/water mixture) to the connection via a spray bottle or brush. If any bubbles begin to form, that indicates there is a leak, and the connection needs to be re-tightened. Tighten the connection and recheck it for leaks.
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. Wrapping the piping upward will prevent rain/moisture from seeping into the overlaps of the tape IMPORTANT Do not complete these steps until all of the refrigerant piping connections have been checked for leaks. 1. Wrap the connectors at the indoor air handler tightly with the supplied sound deadening pads.
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. 7.3a 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) Page 37 mrcool.
Electrical Connections 8 BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS **NOTE: ELECTRICAL WORK MUST BE COMPLETED BY A QUALIFIED TECHNICIAN!** DO NOT connect another appliance to the outlet for the unit. Only connect the unit to an individual branch circuit outlet. DO NOT allow wires to touch or rest against the refrigerant piping, compressor, or any other moving parts within the unit. 1.
Electrical Connections NOTE ON AIR SWITCH • When the maximum current of the air conditioner is more than 16A, an air switch or leakage protection switch with protective device shall be used (purchased separately). • When the maximum current of the air conditioner is less than 16A, the power cord of the air conditioner should be equipped with a plug. Systems in the North American market should be wired according to NEC & CEC requirements and regulations.
Electrical Connections CAUTION NOTE: ELECTRICAL WORK MUST BE COMPLETED BY A QUALIFIED TECHNICIAN. Connect the connective cables to the terminals, as identified below, with their matching numbers on the terminal block of the indoor and outdoor units. Ensure that all screws and wires are securely fastened to the terminal block. For example, in the US models shown in the following diagram, Terminal L1(A) of the outdoor unit must connect with terminal 1 on the indoor unit.
Electrical Connections Wiring Diagrams L1 L2 1(A) 2(A) 3(A) 1(B) 2(B) 3(B) 1 2 TO B 3 Fig. 8.3 OPTIONAL 3 OPTIONAL 2 TO A OPTIONAL 1 OPTIONAL OPTIONAL OPTIONAL OPTIONAL POWER SUPPLY Fig. 8.4 DIY-MULTI2-18HP230C (Up to 2 zones) DIY-MULTI3-27HP230C (Up to 3 zones) OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL Fig. 8.
Electrical Connections Connect the MC Cable(s) to Outdoor Condenser 1. Remove the screws from the electrical wiring cover from the outdoor condenser, as shown in the image below and Fig. 8.7, and remove it. Outdoor Unit Wiring Diagram is located on the inside of the wire cover on the outdoor unit. Cover Fig. 8.7 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. Please refer to the images below. Continue to do this for each of the MC cables coming from each of the air handlers installed. 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.
89 Refrigerant Piping Connection Electrical and Gas Leak Checks Gas Leak Checks There are two different methods to check for gaseous leaks. Use Fig. 9.1 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 Before Test Run A test run must be performed after the entire system has been completely installed. Complete and confirm the list of checks below before performing a test run.
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.
Troubleshooting 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.
Troubleshooting by Error Code The codes and parts listed below represent what parts could be associated with the error code.
Parts that could be causing the issue Error Code PC 01/ (O) PC 10 PC 11/ PC 12 (O) PC 0F x x x x x x x x x x x x x x x x x x x x x EC 07/ (O) EC 71 PC 08/ (O) PC 44/ PC 46/PC 49 PC 00/ PC 04 EC 51 EC 56 Outdoor fan motor x x T3 Sensor x x x x T4 Sensor x x x TP Sensor x x T2B Sensor x Reactor or inductance x x x Compressor x x x IPM module board x x x x Bridge rectifier x x x x PFC module x x x x x x Additional refrigerant x x x x x
Automatic Wiring/Piping Correction Function NOTE The function for the automatic wiring/piping correction illustrated below is intended for use by a licensed electrical technician only. Newer models now feature automatic correction of wiring/piping errors. Press the"check switch" on the PCB board of the outdoor unit for 5 seconds until the LED displays "CE.” This indicates that this function is working.
Refrigerant Piping Connection EU Disposal Guidelines 12 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 Multi-Zone ® 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.
