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W

ARRANTY

 POLICIES 

AND REGISTRA

TION 

CARD/FORM

W

ARRANTY

 POLICIES 

AND REGISTRA

TION 

CARD/FORM

P5 OF 44

P6 OF 44

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

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

LIMITED PRODUCT WARRANTY POLICIES

The YMGI products are designed and manufactured free from defects in workmanship, and materials for normal 
use. However, for any reason, including many handlings and occasions between the YMGI factories/warehouses 
and where you receive the products, the unit doesn't work, YMGI Group will help to remedy the occurrence in the 
following warranting ways:  

Compressor: 

YMGI will warrant the compressor of YMGI-validated and approved warranty filing, for a period of 

5 years from the date of successful installation at original location.

Parts: 

YMGI will warrant parts of YMGI-validated and approved warranty filing, for one year from the date of 

successful installation at original location.  

All warranty compressors and parts replaced will become the sole property of YMGI Group and must be returned 
to YMGI Group upon request.  Warranty parts may be new or refurbished. All parts are tested and approved 
before shipping.

At no time does the YMGI Group warrant labor cost of any type. Warranty will start from the date of 
successful installation at initial location, or 90 days as of original shipping date from YMGI Group, 
whichever comes first.
This is a standard warranty of limited liability and DOES NOT cover the following:

* Any damage or repairs to properties, or persons as an incident or consequence of improper or faulty 
  transportation, installation, operation, maintenance or service.
* Damage caused by frozen or broken water hoses or refrigeration pipes in the event of equipment failure.
* Any damage as a result of floods, fire, wind, lightening, accidents, corrosive atmosphere or any other conditions 
  beyond the control of YMGI Group.
* Any damage due to interruption or inadequate electrical service to equipment.
* Any products that are installed outside the US or Canada.
* Any unit that has been moved from the original installation address.
* Any labor costs associated with the installation or service of the unit.
* Poor unit performance due to improper unit selection (SEER, Unit size).

To validate the above warranties, ALL the following conditions must all be fulfilled:

1. The unit was fully (100%) and successfully installed by licensed or certified HVAC technicians.
2. The unit was installed following all NEC, state and local codes.
3. The unit was installed following all instructions and manuals made by YMGI Group.
4. ALL fields, especially the technician-checklist, of the 

Limited Warranty Registration Card/Form

 were filled 

    completely by the installing technician and signed by both the installing company technician and the unit owner.
5. The 

Limited Warranty Registration Card/Form

 and a copy of the original installing company's invoice had 

    been received by YMGI Group-Warranty Dept., POB 1559, O'Fallon, MO 63366, within 7 days of successful 
    installation.

No warranty filing will be validated or approved, if any one of the above 5 conditions is not met.
Product registration doesn't guarantee the validity of this limited warranty statement.

Steps to follow for warranty part replacement:

1. Installing or service technician contacts YMGI tech support at 1-866-833-3138 ext 703 from the jobsite, to 
    double-check and confirm with YMGI Technical support the exact part(s) needed to fix all the problems.
2. YMGI will check the customer's warranty filing. Parts for validated and approved warranty will not be charged. 
    Parts of invalid warranty filing or unapproved warranty requesting, will be charged accordingly.
3. YMGI will ground ship out the parts ASAP. Expedited shipping is available at the customer's cost.
4. Replacement parts of approved warranty registration are to be warranted for the remainder of the 1 year parts 
    and 5 year compressor warranty. Purchasing of replacement parts of invalid warranty filing or unapproved 
    warranty requesting, will be as they are and bear no warranty.

YMGI keeps on improving products with various engineering changes without prior notice.  Such improvements 
or changes include but not limited to product specification, appearance, functions, sizes, packaging and others.  
These improvements or changes will not void the limited warranty stated herein. YMGI keeps the final explanation 
of this warranty policy.

LIMITED PRODUCT WARRANTY REGISTRATION CARD

LIMITED PRODUCT WARRANTY

REGISTRATION CARD / FORM  

YMGI to Fill Top Portion, at Shipping, and Keep Copy A; Center Copy B for Installer to Fill and Mail back to YMGI; Bottom Copy C for Customer to Fill and Keep 

Installation Finished and Unit Works Successfully.
Print Name of Installation HVAC Technician:
Signature:

Date and time:

Installation Finished and Unit Works Successfully.
Print Name of Owner:
Signature:

Date and time:

1) Are you the only one to install whole system?
    If not,            % of installation done by you (HVAC technician).

3) Did you read the User Manual and Installation Instruction, before you 
    started the installation?

5) Supply electrical power V/Ph/Hz measured at wiring terminal block of 
    Indoor unit:                                  outdoor unit:

7) Wire gauge, length and terminal colors between circuit breaker/
    disconnect switch to outdoor unit:

9) The size of HVAC circuit breaker/fuse or disconnect switch to the 
    outdoor unit:

11) What is the refrigerant pipe length between each indoor unit and the 
      outdoor unit? Unit A                 Unit  B              Unit C               Unit D...

13) What is the elevation difference between each indoor unit and the 
      outdoor unit? Unit A                 Unit  B              Unit C               Unit D...
     (indoor unit above outdoor unit +, below -)

15) Where is the outdoor unit located? 
      Ground  wall balcony  roof  other 
      location or pad

17) Were the refrigerant pipe ends capped or taped seal, prior to running 
      them through structures to keep debris from entering the copper lines?

21) Did you check if the compressor can be started and stopped in a 
      correct (design) manner?

25) Have you checked all unit functions, with customer's witness, and all 
      functions are correct?

27) Do you provide regular one-year free technical service for this 
      installation?

2) What had been done, prior to your arrival?

4) Who unpacked the unit and accessory boxes to check for damage?

6) Incoming electrical power V/Ph/Hz measured at terminal blocks of
    indoor unit:                                   outdoor unit:

8) Wire gauge, length and terminal colors between each indoor and 
    outdoor unit: Unit A                 Unit  B              Unit C                    Unit D...

12) Where is/are the indoor unit(s) located?
      Unit A                   Unit  B                Unit C                  Unit D...

16) Have you checked to make sure there is no cross-piping and no 
      cross-wiring between any two indoor units (zones)? How did you do it, 
      who was with you?

22) If copper length were not made to the supplied or recommended 
      refrigerant pipe length, how much refrigerant added or deducted?

26) Did you show the user how to operate the unit? Did he/she understand you?

Contact Where the Units are Installed:

Name:
Address:
City:

State (Province):

Contact of the Installing HVAC Contractor/Technician:

Technician Full Name (Print):

HVAC Technician's Company Name:

Address:
Currently Licensed or Certified HVAC Technician License or Certification Number:

Official Phone # to Check the License Validity:

Phone:

Fax:

Email:
Country:

YMGI-Recommended Contractor/Technician:

Phone:Fax:

Email:
City:State (Province):

License Approved or Certified by:

The Company the 
Unit Was Sold Though:

Did the Company 
Pay to YMGI:

Installation Invoice Attached 
to the Registration Card

For 

YMGI 

Use 

Only

Unit #5
Unit #6
Unit #7
Unit #8

Outdoor Serial Number (One Outdoor 
Unit, One Registration Card/Form):

Indoor 

Serial 

Number:

For Multi 

Zone Units

Unit #1
Unit #2
Unit #3
Unit #4

Shipping Packing 
List Number:

Registration Card 
Serial No.

Date the Filled Registration 
Card YMGI Received:

Unit(s) Work 
Successfully (Yes/No):

Warranty 
Approved 

Warranty 
Denied

18) Have you checked and run cooling or heating, one unit by one unit, all 
      working fine?

20) Did you vacuum correctly to check the connecting pipes and indoor unit for
      leakage, what was the micron gauge reading, for how many minutes?

24) What were the measured temperatures (probe not touching any metal):

O

O

O

      At cooling: indoor return air       F,  discharge air       F, and outdoor         F

O

O

O

      At heating: indoor return air       F,  discharge air       F, and outdoor         F

23) Measured refrigerant pressures at outdoor service suction valve, when unit 
      was st. 

O

      Heat pump (PSI):      Cooling (PSI):         Outdoor Ambient Temp. ( F):

HVAC Contractor/
Technician--Name

Hired YMGI-Recommended 
HVAC Contractor/Technician?

List for Installating HVAC Technician to Double Check Installation Quality, and Warranty Processing Purpose (if not filled by technician, or not filled fully, warranty will void)

10) Are the inter-connecting wires and copper lines between indoor and outdoor 
     units installed/covered/protected by line set covers, or anything else? 

14) Did you check the indoor unit for condensate leakage and refrigerant 
      leakage, before and after connecting them?

28) Do you list the working details in the invoice and leave a copy to the 
      customer?

19) Did you charge the inter-connection copper pipes and indoor unit with 
      nitrogen to check for positive leakage (pressures 150-200PSI), before 
      conducting vacuuming leakage check?

By signing above, I acknowledge the liability and responsibility for any false statement or not telling all the facts, and I authorize YMGI to check the details of the filled above, and make its 
decision on warranty. I understand our filing or filling the warranty card/form DOESN'T mean automatic warranty 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 other parts only, without any labor coverage. I agree to and will follow 
all the contents contained in the Limited Product Warranty Policy that YMGI, not other entity, stated in public, including but not limited to manuals, web site, email, etc.
Important Note: A copy of the installing HVAC company's invoice to show all their work details, your payment proof, center copy B of this registration card filled after a successful 
installation, all three (3) MUST be mailed together to Warranty Dept., 

YMGI Group, POB 1559, O'Fallon, MO 63366

, for warranty processing. Customer keeps bottom copy C. YMGI 

will check against copy A that was kept at YMGI.

Is the outdoor unit anchored to 
ground or secured onto wall 
bracket?

Summary of Contents for WMMS-12EC-V2B

Page 1: ...LIT WMMS 59 2 EC DC IVTR II 20131130 For Ceiling Cassette Styles 59 12 to 24K Btu h Cooling and Heat Pump This Manual is Subject to Change to Reflect Our Continuous Effort for Engineering Improvement without Prior Notice YMGI is the Trademark and Property of YMGI Group Copyright of YMGI Group 2013 YMGI Engineered HVAC R Products for Maximum Green World and Better Tomorrow YMGI Group POB 1559 O Fal...

Page 2: ...al support division directly at 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 fr...

Page 3: ...re humidity ranges installation operation maintenance service warranty parts and so on 4 Properly select correct most suitable YMGI product models of units and accessories for your HVAC applications jobs and list them in your proposal quote in writing on your company s quote form or letter head basing upon the information you get from 1 2 and 3 above 5 List your currently valid HVAC license and EP...

Page 4: ...the installation 5 Supply electrical power V Ph Hz measured at wiring terminal block of Indoor unit outdoor unit 7 Wire gauge length and terminal colors between circuit breaker disconnect switch to outdoor unit 9 The size of HVAC circuit breaker fuse or disconnect switch to the outdoor unit 11 What is the refrigerant pipe length between each indoor unit and the outdoor unit Unit A Unit B Unit C Un...

Page 5: ...thorized contractor in YMGI list that is close to you otherwise 4 Authorized Distributor in YMGI Distributor list otherwise 5 Contractor Distributor you prefer who is close to you CONTACT FOR GENERAL TECHNICAL QUESTIONS OR SUPPORT IN A SEQUENCE 1 The original installer otherwise 2 The current service contractor otherwise 3 The distributor where the unit is purchased from otherwise 4 YMGI Technical...

Page 6: ...s Net L x W x H In Package L x W x H In Net LBs Packaged LBs 20 40 40 HQ WMMS 12EC V2B 59 2 208 230 1 60 187 253V 13900 12000 5200 13000 11600 9000 16 8 2 2 96 353 312 245 25 18 Upon Mounting Height Speed Temp 0 39 37 35 49 47 45 FN11T 2 Single 700 600 515 11 50 1 Centrifugal 1 11 1 x 5 8 MP35CB 2 2 NA T3 15A 250V 0 2A Alu Fin Inner Grooved Copper Tube Blue Yes 1 4 3 8 1 22 Yes 25 Yes Standard Was...

Page 7: ...te circuit and suitable fuse Be sure to install an earth leakage breaker Diameter of power supply cord must be big enough Refer to P24 about the sizes of diameter If the supply cord is damaged it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard The appliance shall be installed in accordance with relative wiring regulations 2 Pleas...

Page 8: ...ot installed in the laundary CEILING OPENING AND SUSPENSION BOLT M10 PITCH DEMENSION HANGING PREPARATIONS Firmly fasten the hanging bolts as shown in Fig 4 or by another method Fig 4 Fig 5 Keep clearance 12Ft or more Exhaust of large capacity Heat 22 5 22 5 9 1 25 6 25 6 1 97 12EC 18EC 24EC W L H a b c 33 1 33 1 9 1 37 4 37 4 2 4 22 5 22 5 9 1 25 6 25 6 1 97 Fig 3 W a L c b H a b INSTALLATION ACCE...

Page 9: ...nut B onto the hanging bolt Fig 6 2 Raise the body and mount its hooks onto the hanging bolt between the special nuts Fig 6 3 Turn special nut B to adjust the height of the body Fig 6 4 Use a level or vinyl hose filled with water to adjust the unit to level Warning Fig 6 INDOOR UNIT INSTALLATION INSTALLING DRAIN PIPE NOTE Install the drain pipe Install the drain pipe with a downward gradient 1 50 ...

Page 10: ...nd outdoor unit wiring terminal Note The temperature of refrigerant circuit will be high please keep the interconnection cable away from the copper tube An all pole disconnection device which has at least 3mm separation distance in all pole and a residual current device RCD with the rating of above 10mA shall be incorporated in the fixed wiring according to the national rule CONNECTION OF REFRIGER...

Page 11: ...and tighten the terminal screw to hold the exposed solid wire loop securely B For strand wiring 1 Cut the wire end with a wire cutter then strip the insulation to about 3 8 10mm to expose the solid wire 2 Using a screwdriver remove the terminal screw s on the terminal board 3 Using a round terminal fastener or plier securely clamp a round terminal to each stripped wire end 4 Position the round ter...

Page 12: ...AFTER INSTALLATION 1 Prepare for test 1 Do not turn on the power switch before all installation is finsihed 2 Connect wires correctly and firmly 3 Open the check valve 4 Remove all dust 2 Testing 1 Turn on the power switch and press ON OFF button 2 Press MODE button to select COOL HEAT FAN etc to test whether it operates normally 3 Emergency operation When the unit is stopped you can press the AUT...

Page 13: ... turned off TIMER ON BUTTON This button allows you to set a time you would like the unit to turn on The clock is a 2 hour clock Press the TIMER ON button once and you will see the word ON flashing next to a time displayed By pressing either the or the button choose the time you would like the unit to turn on Once you have the desired time displayed on the remote press the TIMER ON button once more...

Page 14: ...sappear from the remote screen By doing so the return air temperature will take the place of remote local temperature as the unit s target temperature U TOUCH is what YOU WANT U TOUCH feature brings to you a true comfort level wherever and whenever you want SWING BUTTON Hold the swing button symbol shown above for more than 2 seconds and the indoor air louver will start to swing between the highes...

Page 15: ...ower socket terminal block on indoor outdoor unit and all connectors on main board especially the main board of outdoor unit power module and PFC module are loosened or not GENERAL PROCEDURES TROUBLE SHOOTING OPTIMUM OPERATION Adjust the room temperature properly Adjust the room temperature properly for a comfortable environment Never place anything under the indoor unit that is to be kept dry Tur...

Page 16: ...d will turn low after 1 minute This is caused by the refrigerant flowing inside the unit This is the noise of refrigerant caused by flow stop and flow change The noise is heard when the drainage pump is in operation No need to do anything NORMAL OCCURRENCE When normal occurrence happens Normal Occurrence Cause and remedy of normal occurrence TROUBLE SHOOTING Warning In case of something abnormal s...

Page 17: ...ent temp sensor malfunction E1 E2 E3 E4 E5 E6 E3 E3 Defrost E5 F2 E5 E5 E9 E9 F0 F1 F3 F2 F4 E3 F5 Code indication on display Meaning NO TROUBLE SHOOTING ERROR OR PROTECTION CODE INDICATION NO Error or protection codes LED red LED yellow LED green 1 Compressor high pressure protection unit stop Blink once 2 Indoor unit anti freezing protection Twice times 3 Low pressure protection unit stop Three ...

Page 18: ...temperature sensor when using this temperature sensor Green light blink once Blink 15 times Malfunction of jumper cap Water overflow protection Indoor ambient temperature sensor is open circuit or short circuit 2 1 3 4 5 Indoor evaporator temperature sensor is open circuit or short circuit Malfunction of ambient temperature sensor on wire controller TROUBLE SHOOTING ERROR CODE LIST Malfunction nam...

Page 19: ...before starting the air conditioner 1 Clean the filter and the body of the unit 2 Turn off power 3 Clear dust 4 If there is any rust deep inside the outdoor unit may need to use an extended head cleaning tool End of Seaseon Cleaning CARE AND MAINTENANCE CARE AND MAINTENANCE Pull out the power plug before cleaning Do not splash water directly to the unit WARNING Note 5 Shut the air intake grille Re...

Page 20: ...ing to include a 1 year installation service warranty at no extra charge Check with them to see if that is available If available include that in the contract 14 Verify and confirm the installation is done completely and all the unit functions have been checked and are working properly all the items in the checklist have been checked and marked well in the warranty registration card form prior to ...

Page 21: ...e exceptions Most have resulted in equipment failure due to lack of knowledge and experience A few of the problems result from DIY s lack of knowledge in the following areas Sizing and selecting correct type size and model of cooling and or heating equipment Sizing and installing correct electric circuit breakers and wires Wiring the units correctly and properly Taping the ends connecting to indoo...

Page 22: ...different from what are typical in traditional split type air conditioning and heat pump systems and similar systems made by other manufacturers These are not defects Take some time to learn the functions of your unit We will be happy to assist you with any questions you may have concerning the functions of your new unit 1 Part repair or replacement after trouble shooting This is the most common a...

Page 23: ...tever questions you have or problems you have seen as a unit history No Date USER NOTES AND INSTALLATION SERVICE MAINTENANCE NOTES Notes Asked for Your Technician for Help Did You Ask YMGI Tech for Help INSTALLATION NOTES Original Installation Company Name Technician Name Phone HVAC License Job Not Performed by Technician Technician Checklist Completed Fully SERVICE MAINTENANCE NOTES No Date Conte...

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