YMGI WMMS-09EW-V2B Technician Service Manual Download Page 4

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Dear Customer(s)/End User(s)/Unit Purchaser(s)/Installer(s)/Contractor(s)

Thanks for choosing YMGI products.

The YMGI equipment you purchased is either a split-type or a self-contained cooling/heating system which 
requires an installer's license, certification, knowledge, experience, carefulness and details for a successful and 
good installation. This equipment is different from those window or portable air conditioners you can normally 
purchase from local retail stores such as Home Depot, Lowe's, Sears, etc. which the manufacturer may not 
require licensed personnel to install. 

Reading and following the YMGI Group recommendations, suggestions, and requirements, written in the 
following pages and other documents, is the first step in our hope and effort to help ensure a smooth installation 
& proper operation of your products for many years.

WHY DOES YMGI GROUP REQUIRE INSTALLATION AND SERVICE TO BE 
PERFORMED BY LICENSED OR CERTIFIED HVAC TECHNICIAN/ 
CONTRACTOR?

 

1) They have the training and experience to accurately and safely install and service your equipment.

 

    The equipment runs with high-pressure refrigerant and oil and line-voltage. The copper lines must be installed 
    properly to prevent leakage and foreign substances from contaminating the refrigerant system.

2) You will save money in the long run.
    

If any problems occur on the unit that is fully installed by the licensed or certified contractor, they have the 

    training and experience to correct the problem more efficiently. A technician(s) may be unwilling to repair an 
    issue on a unit that they did not install. If you do find a technician willing to perform the service, there is an 
    increased possibility of higher service fees than normal, increased service visits, or delayed service from that 
    technician. 

3) It's the law!
    

The federal, state and/or local government and authorities have various governing laws or regulations, 

    guidelines, ordinances, etc., requiring only licensed or certified professionals can install and service high 
    pressure HVAC equipment.

SUGGESTIONS, TO AID YOU IN HIRING AN HVAC CONTRACTOR:

1) Hire a currently, practicing, licensed/ certified HVAC technician/ contractor. Technicians, who are no longer 
    practicing (retired, etc.) in this field, may not have the updated knowledge or may lack experience on the 
    equipment you have purchased.
2) Hire a technician/ contractor who services customers in your local area and you are familiar with. Local 
    contractors have a faster response time and will be easier for you to determine if they are reputable.
3) Use only reputable licensed/ certified HVAC installation contractors/ technicians to prevent any unexpected 
    charges as a result from unethical business practices. 
4) Check their references, to verify they are a good service provider to the general customers. N.A.T.E or A.C.C.A 
    certified technicians are strongly recommended. 
5) Some contractors/ technicians may not feel comfortable about installing the equipment that you purchase for 
    them to install, and they prefer to purchase and install the equipment. You can contact YMGI directly to check 
    and see if there have been any contractors in your area who have installed our products or similar.
6) Ask for a detailed quote for the whole installation project.  A flat rate quote is the safest contract for both you 
    and the contractor
7) Your local HVAC technicians may charge you on a project basis or on an hourly basis. To our general 
    knowledge and experience, 

a full single head installation may normally cost anywhere from $800 to 

    $1500

. These costs are estimates and your actual costs may differ due to job nature and location. 

8) Number of hours can vary depending upon each individual situation, some factors are, but not limited to:
9) How difficult or complex the indoor unit is to be securely installed.
10) Hoe difficult or how long the inter-connecting pipes and wires are to be installed.
11) If all the suggestions have been taken and all the necessary steps are followed.

CUSTOMER AND TECHNICIAN MUST READ

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

CUSTOMER AND TECHNICIAN MUST READ

PRIOR TO OPENING THE BOX OF, OR INSTALLING / 
SERVICING THE PRODUCT (HVAC & R)

Upon the purchasing, unpacking, installation and/or service of this product, you and all other parties hired to 

install or service your products, have read all YMGI Group (we) has written hereafter and all agree:

1) You understand all that is written hereafter in this and other documents that we publish.

2) You will follow what is written hereafter in this and other documents that we publish.

3) You will be bound by and completely follow all policies, guidelines, instructions, warnings, attentions and other 

    materials, as published by YMGI Group, its subsidiaries or sister companies, in writing. 

4) Only a successful installation, fully (100%) conducted by a qualified HVAC technician(s), as detailed in the 

    checklist of the 

Limited Product Warranty

 

Policy

 and 

Limited Product Warranty Registration Card/Form

    along with a properly detailed installation invoice, is eligible for the 

Limited Product Warranty

.

5) Failure to follow what is written hereafter may cause various equipment issues that you will take full 

    responsibility and liability for, including, but not limited to, losing manufacturer's warranty, unit not working 

    properly, unit malfunctions, under-performance, decreased safety, increased potential of various damages to 

    your property, body, home and/or business, etc.

6) YMGI documents and policies supersede those made or provided by the sales distributors or installing 

    contractors. YMGI Group maintains the final authority in explaining and resolving any and all discrepancies 

    that might exist between distributors/contractors' documents and ours. 

YMGI STRONGLY RECOMMENDS:

* Customer hires a currently licensed/ certified HVAC technician(s) (N.A.T.E. or A.C.C.A certification is strongly 

   recommended) to conduct 100% of the installation, inspection of all unit functions and repair service.

* Customer signs an installation/service contract with the installation/service technician's company who has good 

   service references and you trust. Installation and service is very important to the life of your investment and 

   provide you a lifetime of comfort

 

and peace of mind.

* Customer requests the installer to put down a1-year labor warranty coverage in the installation contract.

* Have the technician check against all the items in the checklist of the 

Limited Product Warranty

 

Registration 

   Card/Form

, sign and date it, to help ensure a proper and professional installation.

* Customer pays in full, only after all the unit functions are inspected, the unit works properly, warranty checklist 

   is fully filled out and signed and you are fully satisfied.

* If any unit abnormality is found, have your technician check the unit first. Have them call for manufacturer 

   technical assistance, if necessary, from your job site, not his office, so that we can more accurately assist him 

   in diagnosing the cause of the malfunction.

Summary of Contents for WMMS-09EW-V2B

Page 1: ...pment NEC State City or Local Codes and related manuals from us Otherwise damage to equipment or property even injury to people may occur Installer Currently licensed HVAC installer only Read this man...

Page 2: ...ory labs third party labs and various fields applications following related industrial and company standards 7 Field installation details matter with all 1 if your units will work correctly and proper...

Page 3: ...ty approval because warranty is approved only to those qualified and successful installations by qualified HVAC technician I know the warranty if approved is a standard 5 year compressor and 1 year ot...

Page 4: ...eral knowledge and experience a full single head installation may normally cost anywhere from 800 to 1500 These costs are estimates and your actual costs may differ due to job nature and location 8 Nu...

Page 5: ...D MUST READ MUST READ P7 OF 40 P8 OF 40 YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Engineered Comfort Products for A Sustainable and Efficient Green World The co...

Page 6: ...t Green World YMGI Engineered Comfort Products for A Sustainable and Efficient Green World If the damage is minor or partial that you choose to accept you can contact the distributor or YMGI to discus...

Page 7: ...he Customer Request to Ship Products to YMGI Service Center for Inspection and Repair and Authorization to Charge form 2 You will review the form and fill all fields appropriately sign and send back t...

Page 8: ...copper tube Aluminum fin copper tube Swing Motor Model MP28VB 1 4 3 8 MP28EC MP35XX Output of Swing Motor W 2 2 2 5 Fuse A PCB 3 15A Transformer 0 2A PCB 3 15A Transformer 0 2A PCB 3 15A Transformer 0...

Page 9: ...WS DIMENSIONS MOUNING BRACKET CLEARANCE YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Engineered Comfort Products for A Sustainable and Efficient Green World WMMS 0...

Page 10: ...this mode only indoor fan is running at setting status Under auto fan speed it will run by cooling auto fan Heating Mode When the indoor receiving the information mode clash from outdoor unit and the...

Page 11: ...ter setting sleep procedure 1h T preset will increase 1 F 2h later T preset will O O increase 2 F then remain the temperature T preset will not exceed 86 F under heating after setting sleep O O proced...

Page 12: ...ER 4 OVER 80 CLEARANCE REQUIRED AROUND UNITS DUAL ZONE 2 YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Engineered Comfort Products for A Sustainable and Efficient G...

Page 13: ...E REQUIRED AROUND UNITS QUAD ZONE OVER 2 OVER 4 OVER 4 OVER 80 YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Engineered Comfort Products for A Sustainable and Effic...

Page 14: ...for screws Align mounting plate holes with those holes drilled on the wall and put anchors or screws into the holes to secure mounting plate Steps To Mount Plate a b c Drill mounting holes to make su...

Page 15: ...ipes need to come out of the bottom side facing the front of indoor unit of the indoor unit snap off portion 2 on plastic casing If pipes need to come out of the left side facing the front of indoor u...

Page 16: ...N INDOOR AND OUTDOOR UNITS Firstly connect copper tubes at indoor unit Bend pipes by tools but not by hands Extra length is needed for future service REFRIGERANT PIPES For distance other than 25 betwe...

Page 17: ...25 26 27 28 29 30 Jumping connector 1 32 Transformer 48X26P 1 33 Wire clamp 1 34 Rear clamp 1 35 Connecting cable 1 36 swing louver clamp 1 37 swing louver 1 38 swing louver up 1 39 swing louver down...

Page 18: ...e 68012019 1 Receiver board 30545042 1 Front panel 200022921 1 Guide louver 261120432 1 Guide louver 261120422 1 Motor MP28EC 15212002 1 Right motor clamp 26112429 1 Bearing holder 26152423 1 Motor FN...

Page 19: ...2 Front case 200026524 1 Front panel 2000284402 1 remote control YT1F 30510049 1 Displaying light board 22432071 1 Electric box cover 1 20112019 1 Wire clamp 71010103 1 Terminal board 4201026601 1 El...

Page 20: ...mfort Products for A Sustainable and Efficient Green World DISASSEMBLY PROCEDURE OPERATING PROCEDURES PHOTOS Disassemble Front Panel Lift the front panel upward Firstly screw off a screw fixing the up...

Page 21: ...ny damages to person or property of whatever kind direct or indirect special or consequential whether resulting from use or loss of use of the product The original licensed installer or current servic...

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