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YMGI WMMS-80CH-V2B(59)2S Service Manual

Dc inverter multiple zone 80 and 90 ch (59)2s symphony choir outdoor unit
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DC INVERTER MULTIPLE ZONE 80 and 90 CH (59)2S
Model Numbers:
WMMS-80CH-V2B(59)2S
WMMS-90CH-V2B(59)2S
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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Summary of Contents for YMGI WMMS-80CH-V2B(59)2S

  • Page 1 WMMS-90CH-V2B(59)2S 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • Page 14: Technical Information

    YMGI: Your Modern Green Idea Technical Information Outdoor Unit WMMS-80CH-V2B(59)2S WMMS-90CH-V2B(59)2S YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 15: Specifications

    Heating Operation Ambient Temperature Range ° F -4 ~ 75 -4 ~ 75 Maximum IDU Qty. Unit Defrosting Method Automatic defrosting Automatic defrosting Metering Device Electronic expansion valve Electronic expansion valve YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 16: Outline Dimension Diagram

    YMGI: Your Modern Green Idea Outline Dimension Diagram WMMS-80CH-V2B(59)2S WMMS-90CH-V2B(59)2S YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 17: Testing Board Introduction

    2. If the malfunction occurs in the indoor units, the error codes in series at intervals of 2 This display will show the address of the seconds. indoor unit. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 18: Process Control Setting

    2. When the menu is set, the data section will flash “=”. After the “=” stops blinking, the unit will run the new parameters. 1.3.2 Flow chart of operation YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 19 5. Switch with the “＋” “－” to the target value, and then press “Enter” key: the function section displays “AC” code uninterrupted and the data section flashes the new parameters uninterrupted. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 20: Running Codes

    1.3.5 The code of data section evaporation temperature H(represent High) N(represent Normal) L(represent Low) condensation temperature Vacuum operation OF (represent OFF) defrosting mode OF(represent OFF) defrosting mode OF(represent OFF) YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 21: Troubleshooting

    If the air conditioner still runs abnormally after the above check and handling, please contact the local service center and also give a description of the error occurred as well as the model of the unit. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 22 The dust inside the unit is blown out again used for a long time The unit emits odors When the unit is running The odors absorbed in are blown out YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 23: Error Description

    Flash 13 times Suction temperature sensor error Flash 15 times Condenser temperature sensor error Flash 16 times Sub-cool temperature sensor error Flash 17 times Low pressure sensor error Flash 18 times YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 24 Indoor unit gas sensor error Indoor unit humidity sensor error Indoor unit water full protection Jumper terminal error Power supply phase lack Outdoor unit fan motor error Refrigerant recovery mode YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 25: Malfunction Display: High Pressure Protection

    Find the malfunction reason carefully as unit may occur several malfunction at the same time and one malfunction may develop into several malfunction, so entire system analysis shall be established to make the judged result exact and credible. 3.1 Malfunction display: High Pressure Protection YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 26: Malfunction Display: Low Pressure Protection

    YMGI: Your Modern Green Idea 3.2 Malfunction display: Low Pressure Protection YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 27: Malfunction Display: Discharge Temperature Protection

    YMGI: Your Modern Green Idea 3.3 Malfunction display: Discharge temperature protection YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 28: Malfunction Display: Current Protection

    YMGI: Your Modern Green Idea 3.4 Malfunction display: Current protection YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 29: Malfunction Display: Communication Error

    YMGI: Your Modern Green Idea 3.5 Malfunction display: Communication error YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 30: Malfunction Display: Indoor Unit Water Full Protection

    The resistance value of discharge temperature sensor is 50 KΩ; The resistance value of outside temperature sensor and inside temperature sensor are all 15 KΩ; The others are 20 KΩ. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 31: Malfunction Display: High/Low Pressure Sensor Error

    YMGI: Your Modern Green Idea 3.8 Malfunction display: High/Low pressure sensor error YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 32: Power Distribution

    YMGI: Your Modern Green Idea 4 POWER DISTRIBUTION 4.1 Diagram of Power Distribution (The thick line represents power line while thin line represents the control line.) YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 33: Wiring Diagrams

    4.2 Wiring diagram Note: This drawing is just for reference; please always refer to the electric wiring stuck to the unit for actual wiring. 4.2.1 Outdoor unit GWHD(56S)ND3CO; GWHD(48S)ND3CO YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 34 YMGI: Your Modern Green Idea 4.2.2 Indoor unit 1) Wall mounted type  Hansol GWH09TB-D3DNA1A/I; GWH12TB-D3DNA1A/I; GWH18TC-D3DNA1A/I; GWH24TD-D3DNA1A/I  U-Cool WMMS-09EW-V2B(59)4, WMMS-12EW-V2B(59)4, WMMS-18EW-V2B(59)4 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 35 YMGI: Your Modern Green Idea  Cozy GWH09MB-D3DNA3D/I; GWH12MB-D3DNA3D/I; GWH18MC-D3DNA3D/I; GWH24MD-D3DNA3D/I 2) Duct type WMMS-09EF-V2B(59)2, WMMS-12EF-V2B(59)2, WMMS-18EF-V2B(59)2, WMMS-24EF-V2B(59)2, 3) Cassette YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 36 YMGI: Your Modern Green Idea GKH(12)BA-D3DNA2A/I; GKH(18)BA-D3DNA2A/I; GKH(24)BA-D3DNA1A/I 4) Floor ceiling WMMS-12EU-V2B(59)2, WMMS-18EU-V2B(59)2, WMMS-24EU-V2B(59)2, YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 37 YMGI: Your Modern Green Idea 5) Console WMMS-09EL-V2B(59)2, WMMS-12EL-V2B(59)2, WMMS-18EL-V2B(59)2, 4.2.3 BU module FXA2A-D; FXA2B-D YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 38 YMGI: Your Modern Green Idea FXA3A-D; FXA3B-D YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 39: The Resistances Of Common Temperature Sensors

    2.222 1.467 2.998 4.167 2.750 17.930 2.278 1.503 2.898 4.190 2.766 17.140 2.334 1.540 2.797 4.214 2.781 16.390 2.389 1.577 2.702 4.237 2.796 15.680 2.445 1.613 2.611 4.259 2.811 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 40 1.564 1.033 4.773 4.037 2.664 41.84 1.617 1.067 4.605 4.064 2.682 39.87 1.670 1.102 4.443 4.091 2.700 38.01 1.724 1.138 4.289 4.117 2.717 36.24 1.778 1.174 4.14 4.143 2.734 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 41 2.110 1.393 3.364 4.280 2.825 26.17 2.166 1.429 3.252 4.301 2.838 25.01 2.222 1.466 3.144 4.321 2.852 23.9 2.278 1.503 3.04 4.340 2.865 22.85 2.334 1.540 2.94 4.359 2.877 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 42 0.596 0.393 3.6194 3.671 2.423 70.503 0.621 0.410 3.5143 3.700 2.442 67.338 0.647 0.427 3.4128 3.728 2.460 64.333 0.673 0.444 3.3147 3.755 2.478 61.478 0.700 0.462 3.22 3.782 2.496 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 43 1.591 1.050 1.6402 4.295 2.835 20.601 1.634 1.078 1.5996 4.310 2.845 19.814 1.677 1.107 1.5602 4.325 2.855 19.061 1.721 1.136 1.522 4.340 2.864 18.34 1.764 1.164 1.485 4.354 2.873 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 44: Disassembly And Assembly Procedure Of Main Parts

    Remove the front side plate. 3. Disconnect the outer case a) Unscrew the fixed screws of the outer case. b) Remove the outer case. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 45 2. Remove the connecting pipe a. Solder the joint of connecting of the compressor pipe of the compressor. b) Pull out the connecting pipe Note: never let the flame contact any other component. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 46 5. Fix the new compressor on Tighten the screws on the seating of the seating the new compressor YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 47 9. Check and screw back the a. Check if the pipe is well plates connected. b. Check if the parts and wire well connected. c. If there is no problem, fix the cover. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 48 Solder the connecting valve and install the Pipes magnet coil. Note: To avoid heat damage the internal structure of the 4-way, wrap it to be brazed with sufficient wet cloths. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 49: Tools For Installation And Maintenance

    YMGI: Your Modern Green Idea Tools for Installation and Maintenance YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 50: Appendix 1: Reference Sheet Of Celsius And Fahrenheit

    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!

  • Page 51: User Notes And Installation/Service/Maintenance Notes

    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 52 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.

This manual is also suitable for:

Wmms-90ch-v2b(59)2s