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DC INVERTER MULTIPLE ZONE 30,36, 42,48,60k (59)5 CH
Model Numbers:
WMMS-30CH-V2B(59)5
WMMS-36CH-V2B(59)5
WMMS-42CH-V2B(59)5
WMMS-48CH-V2B(59)5
WMMS-60CH-V2B(59)5
Thank you for choosing this YMGI product. Please read the owner's manual carefully before installation and operation, and retain for your
records and future reference. If you need a replacement copy, please contact your local agent or visit www.ymgigroup.com to download
a current electronic version.
This product is designed and manufactured to be free from any defects in material and workmanship during normal use and
maintenance. Installation, operation, maintenance and repair must follow all standards and professional practices for regular cooling
and heating equipment, such as NEC, State, or Local Codes and all related documents/manuals provided by YMGI. Failure to follow
and adhere to all codes and documentation can cause damage to equipment, property even personal injury.
Installer: Currently licensed/certified HVAC technicians only. Must Read the manual and all provided documents prior to installation.
Complete and fill out all required information on the warranty registration card.
User: Retain this manual and all supplied documents for your records and future reference.
Servicer: Use this manual for information concerning servicing and maintenance of this product.
Only qualified technicians should install and service this equipment. The installation, startup, operation and servicing of this equipment
can be hazardous and requires a HVAC professional who has been trained, licensed and certified. Installations, adjustments or any
equipment alterations done by an unqualified person could result in serious injury and even death. When working on the equipment,
observe all precautions in the provided documents, on the tags, stickers, and labels that are attached to or placed on the equipment.
YMGI, Engineered Comfort Products for A Sustainable
SERVICE MANUAL
SYMPHONY CHOIR OUTDOOR UNIT
SAFETY WARNING
and Efficient Green World!
NOTICE
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Table of Contents
Related Manuals for YMGI WMMS-30CH-V2B(59)5
Summary of Contents for YMGI WMMS-30CH-V2B(59)5
- Page 1 WMMS-60CH-V2B(59)5 Thank you for choosing this YMGI product. Please read the owner’s manual carefully before installation and operation, and retain for your records and future reference. If you need a replacement copy, please contact your local agent or visit www.ymgigroup.com to download a current electronic version.
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Page 2: Table Of Contents
Limited Product Warranty ........................8 Limited Product Warranty Registration Card ..................10 Why Does YMGI Group Require Installation and Service to Be Performed 100% By Currently Licensed or Certified HVAC Technicians/Contractors ..........11 Suggestions to Aid You in Hiring an HVAC Contractor ................11 Safety Precautions .......................... -
Page 3: Introduction
Refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs), may affect the ozone layer. Not all refrigerants have the same potential impact on the environment. YMGI Group advocates for the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs. - Page 4 This document and the information contained therein are the sole property of YMGI Group and shall not be used or reproduced in whole or in part, without the written permission of YMGI Group. YMGI Group reserves the right to revise this manual at any time and to make changes to its content without obligation to notify anyone about any modifications, revisions or changes.
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Page 5: Note From Ymgi - Must Read
YMGI Group is the MEDIA AUTHORITY: YMGI Group, located in O'Fallon, MO 63366 is the author of all media produced for its products and is the only party able to give any additional explanation for any data, definitions and or descriptions found within any of its media, including but not limited to YMGI product brochures, manuals, pamphlets, catalogs, and videos. - Page 6 In an effort to help protect our customers from possible faulty installations that can lead to premature unit failure, YMGI provides the above information for you and the technician. You can observe while your system is being installed, even though your observation is not a guarantee your system is being or has been installed properly and professionally.
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Page 7: Installing Technician/Contractor's Responsibilities
You will be solely responsible for the entire installation that you have been contracted. Make sure you have all the materials you need to properly, completely and correctly finish the installation. The YMGI units and accessories may be just a portion of what you will need for the project. When support issues arise, remember YMGI employees and YMGI distributors/sales, dealers and agents are not installers and may only provide suggestions. -
Page 8: Limited Product Warranty
Compressor: YMGI will warrant the compressor of an YMGI-validated and approved warranty filing, for a period of 7 years from the date of successful installation at its original installation location. Parts: YMGI will warrant parts of an YMGI-validated and approved warranty filing, for two years from the date of successful installation at original installation location. - Page 9 YMGI Technical support the exact part(s) needed to fix the problem(s). 2. YMGI will check the customer's warranty filing. There will be no charge for Parts with a validated and approved warranty. Any Parts that have not been validated and approved or have an invalid warranty filing resulting in an unapproved warranty request, will be charged accordingly.
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Page 10: Limited Product Warranty Registration Card
YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! -
Page 11: Why Does Ymgi Group Require Installation And Service To Be Performed 100% By Currently Licensed Or Certified Hvac Technicians/Contractors
6. Some contractors/technicians may not feel comfortable about installing equipment that has been purchased by someone other than themselves. They prefer to purchase and install the equipment themselves. You can contact YMGI directly to check and see if there are contractors in your area who have installed our products or any similar products. -
Page 12: Safety Precautions
YMGI Group recommends that only properly trained and authorized personnel be allowed to repair or service the unit. Improper repairs or servicing can result in electric shock or fire hazards. Please contact YMGI Group if you need help locating a qualified repair or service technician. - Page 13 YMGI: Your Modern Green Idea YMGI Group will not be responsible for any personal injury or any property damage caused by improper or incorrect installation, improper service or maintenance or by not following the instructions listed in this manual. DO NOT pull on the power supply cords or refrigeration lines that are connected to the indoor and outdoor units.
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Page 14: Technical Information
YMGI: Your Modern Green Idea Technical Information Outdoor Unit WMMS-30CH-V2B(59)5 WMMS-36CH-V2B(59)5 WMMS-42CH-V2B(59)5 WMMS-48CH-V2B(59)5 WMMS-60CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! -
Page 15: Specifications
YMGI: Your Modern Green Idea (59)5 ODU Specification Sheet YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 16 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 17: Outdoor Unit Dimensions
YMGI: Your Modern Green Idea Outline Dimension Diagram WMMS-30CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 18 YMGI: Your Modern Green Idea WMMS-36CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 19 YMGI: Your Modern Green Idea WMMS-42CH-V2B(59)5 WMMS-48CH-V2B(59)5 WMMS-60CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 20: Refrigerant System Diagram
YMGI: Your Modern Green Idea Refrigerant System Diagram WMMS-30CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 21 YMGI: Your Modern Green Idea WMMS-36CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 22 YMGI: Your Modern Green Idea WMMS-42CH-V2B(59)5 WMMS-48CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 23 YMGI: Your Modern Green Idea WMMS-60CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 24: Electrical Components Wiring Diagrams
YMGI: Your Modern Green Idea Electrical Components Symbol Symbol Color Symbol Symbol Color Symbol Symbol Color White Green COMP Compressor Yellow Brown Grounding wire Blue Violet YEGN Yellow/Green Black Orange Outdoor Unit YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 25 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 26 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 27 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 28: Pcb Printed Board Diagrams
YMGI: Your Modern Green Idea PCB Printed Board Diagrams YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 29 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 30 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 31: Functions And Controls
The open condition of the electronic expansion valve, outdoor fan and compressor is the same as those in cooling mode. Heating Mode (Only for heat pump models) 3.1 Heating conditions and process: When one of the indoor units reaches the heating operation condition, the unit starts heating operation. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 32 3.5.3 Oil-returned finished condition in heating mode. The duration reaches 5min Fan Mode 4.1 The compressor, the outdoor fan and the 4-way valve are closed; temperature setting range is 16~30OC. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 33: Protection Functions
2.6.2 High-pressure protection is triggered when the high-pressure switch is detected closed for 6s continuously. The compressor can only resume operation after the power to the unit is shut down, and then turned back on again. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 34 , the compressor will stop. After the compressor stops for 3min, if Temperature of the IPM less than 185 °F , the compressor and the outdoor fan will resume operation. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 35: Installation And Maintenance
If there is refrigerant leakage, please take sufficient measure to minimize the amount of lost refrigerant. Never touch the refrigerant piping or compressor without wearing gloves to avoid burns or frostbite. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 36 8. Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the wires so that the terminals receive no external stresses. Electric wires with insufficient capacity, incorrect wire connections and insecure wire terminals may cause electric shock or fire. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 37: Recommended Tools For Installation
YMGI: Your Modern Green Idea Tools for Installation and Maintenance YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! -
Page 38: Installation Procedures
YMGI: Your Modern Green Idea Installation Procedure YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! -
Page 39: Electrical Connections
(Caution: please do not use the fuse only for protect the circuit) Air-conditioner Circuit Breaker Size WMMS-30CH-V2B(59)5 WMMS-36CH-V2B(59)5 WMMS-42CH-V2B(59)5 WMMS-48CH-V2B(59)5 WMMS-60CH-V2B(59)5 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 40 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 41 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 42 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 43: Installing Outdoor Unit
In order not to disturb neighbors and to respect the environment, install a drain fitting and a drain hose to channel the condensate water. Install the drain fitting and rubber washer on the outdoor unit chassis and connect a drain hose as shown in the illustration below. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 44 Piping Size (inches) Torque (N-m) 15-20 35-40 60-65 45-50 70-75 When an adaptor is required for the connection of indoor unit and outdoor unit, the method of pipe connection as follows: YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 45 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 46: Installation Clearances
Use proper equipment and trained personnel when elevating or moving the units. Ensure proper performance of the system by making sure that there is recommended clearances around the appliance. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 47 When installing the drainage fitting and hose, make sure that the line is not placed in an area that is subject to snow drifts or freezing, as that can cause the drain line to be blocked and freeze up, causing the unit to malfunction. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 48: Installation Checklist
This makes leaks easier to detect, and makes sure any future maintenance is done correctly. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 49 After finishing the discharging electricity, measure the voltage between point A and B with a universal meter to make sure the electricity discharge is complete, and prevent electric shock. If the voltage between the two points is below 20V, you can safely perform maintenance. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 50 Wrong connection of communication wire or malfunction of Hardware malfunction electronic expansion valve Malfunction of complete units current detection Hardware malfunction Malfunction protection of outdoor fan 1 Hardware malfunction YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 51 Displayed directly on nixie tube DC bus-bar low voltage protection after 200 seconds DC bus-bar high voltage protection PFC protection The four-way valve is abnormal Start failure of compressor YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 52: Malfunction Checking And Elimination
Is the resistance of compressor coil normal? Is the isolation of compressor coil with copper pipe good? Is the unit overloaded? Is the heat radiation of the unit good? Is the refrigerant charge is correct? YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 53 2. PFC protection malfunction, capacity charging malfunction Main items to check: Is the mainboard broken or damaged Is the wiring of the induction connected well, and is the induction broken YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 54 Is the electric expansion valve working normally or it is broken Is the pressure of the system too high Is the radiation of the unit good YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 55 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 56 Main items to check: Is there a refrigerant leakage Is the electronic expansion valve well connected or is it broken Is the overload protector damaged or broken YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 57 If the stop duration of the compressor is sufficient; If the connection wire of the compressor is connected properly; If the compressor is broken; Flow chart: If the refrigerant charging amount is too much YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 58 Is the terminal of the temperature sensor loose or disconnected Is the temperature sensor is damaged or broken Is the main board is damaged or broken YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 59 7. DC fan malfunction Main items to check: Is the outdoor fan is blocked by foreign objects The connection wire of DC fan is connected securely? If it is loose? YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 60 Is the connection wire between the indoor unit and outdoor unit is correctly and securely connected Is the wires inside the unit is securely connected Is the indoor mainboard or outdoor main board is broken YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 61 YMGI: Your Modern Green Idea YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 62 Is the indoor fan and outdoor fan running normally Is the outdoor ambient temperature within the normal operating range Is the indoor and outdoor radiation environment is good (proper clearances, adequate air flow) YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 63 Capillary Malfunction Replace the capillary temperature. S ys t e m pressure is substantially lower than normal operating range. If there is no refrigerant leak, part of capillary is blocked YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 64 Change compressor oil and refrigerant. If no Motor of outdoor unit is performance is poor and ODU compressor better, replace the compressor with a new damaged generates a lot of noise and heat. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 65: Troubleshooting
While in heating mode, the four way Short circuit inside the valve has abnormal electromagnetic Replace magnetic coil magnetic coil sound YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 66 Abnormal sound from inside Abnormal sound from inside the servicing, reduce the refrigerant to the the compressor compressor proper amount. Too much refrigerant in the system can damage the compressor. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 67: Disassembly Procedure
Remove the connection screw fixing the valve cover and then remove the valve cover. Remove handle Remove the connection screws fixing the handle and the right side plate, and then remove the handle. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 68 Remove front grille Remove the connection screws connecting the front grille and the front panel, Remove front panel Remove the screws connecting the front panel and then remove the front panel. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 69 Remove left side plate Remove the screws fixing the left side plate with the chassis and the condenser support, and then remove the left side plate. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 70 Remove the screws fixing the electric box assy and the middle isolation sheet, loosen the wire bundle, unplug the wiring terminals, and then lift the electric box assy to remove it. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 71 Remove middle isolation sheet Remove the screws connecting the middle isolation sheet with the chassis assy and the condenser assy, and then remove the middle isolation sheet. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 72: Appendix: Reference Sheet For Celsius To Fahrenheit
Remove condenser assy Remove the screws fixing the condenser support and then remove the condenser support. Remove the screws connecting the condenser support and the chassis YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 73 66/67 66.2 89.6 44.6 68/69 91/92 91.4 46/47 46.4 70/71 69.8 93/94 93.2 48/49 48.2 71.6 95/96 50/51 73/74 73.4 97/98 96.8 52/53 51.8 75/76 75.2 98.6 53.6 77/78 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 74: Appendix: Pipe Expanding Method
Note: "A" is different according to the diameter, please refer to the sheet below Outer A(inch) diameter(inch) Ф1/4 2/39 1/36 Ф3/8 1/16 1/51 Ф1/2 1/14 1/51 Ф5/8 5/53 2/23 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 75 YMGI: Your Modern Green Idea F. Inspection Check the quality of expanding port. If there is any blemish, expand the port again according to the steps above. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 76: Appendix: R-T Conversion Tables
60.8 22.53 4.456 201.2 1.207 271.4 0.412 62.6 21.51 132.8 4.294 1.171 273.2 0.401 64.4 20.54 134.6 4.139 204.8 1.136 0.391 66.2 19.63 136.4 3.99 206.6 1.103 276.8 0.382 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 77 60.8 30.04 5.942 201.2 1.609 271.4 0.549 62.6 28.68 132.8 5.726 1.561 273.2 0.535 64.4 27.39 134.6 5.519 204.8 1.515 0.521 66.2 26.17 136.4 5.32 206.6 1.47 276.8 0.509 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 78 1.816 42.8 119.1 21.43 183.2 5.39 253.4 1.77 44.6 113.4 114.8 20.6 5.222 255.2 1.725 46.4 116.6 19.81 186.8 5.06 1.682 48.2 102.8 118.4 19.06 188.6 4.904 258.8 1.64 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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Page 79: User Notes And Installation/Service/Maintenance Notes
USER NOTES AND INSTALLATION/SERVICE/MAINTENANCE NOTES INSTALLATION NOTES Please record any questions or problems you have experienced as a unit history: Asked Your Asked YMGI Tech. Date Notes Technician for Help? contacted for help? YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World! - Page 80 Technician Checklist Date & HVAC License # by Technician Completed Fully? SERVICE / MAINTENANCE NOTES Company Name, Technician Name, Date Type of Service / Maintenance Phone & HVAC License # YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
- Page 81 YMGI: Your Modern Green Idea YMGI is dedicated to designing, manufacturing and distributing the highest quality, energy saving and environmentally friendly air conditioner and heat pump products, while providing the best service and support to all of our customers. Our mission is to help build a sustainable, efficient and green world.