YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
INSTALLER'S INSTRUCTION & USER'S MANUAL
DC INVERTER MULTIPLE ZONE (59)2
SYMPHONY CHOIR
INDOOR UNIT-WALL MOUNT (EW)
WMMS-09EW-V2B(59)2
WMMS-18EW-V2B(59)2
WMMS-12EW-V2B(59)2
WMMS-24EW-V2B(59)2
YMGI Group
POB 1559
O'Fallon, MO 63366, USA
Tel: (866)833-3138 Fax: (866)377-3355
Web Site: www.ymgigroup.com
Email: info@ymgigroup.com
Literature Part No: LIT-WMMS-(59)2-EW-DC IVTR-USER MANUAL-20131130
Subject to Continuous Engineering Change and Product Improvement without Notice.
This product is designed and manufactured free from defects in material and workmanship for the normal use and
maintenance. Installation, operation, maintenance and service shall follow professional practices for regular cooling and
heating equipment, NEC, State, City or Local Codes and related manuals from YMGI. Otherwise, damage to equipment or
property even injury to people may occur.
Installer: Currently licensed HVAC technician only. Read manual before installation. Fully fill in warranty registration card.
User: Keep this manual for future maintenance and service use.
Servicer: Use this manual for service reference.
YMGI is the Trademark and Property of YMGI Group. Copyright of YMGI Group.
LITERATURE: LIT-WMMS-(59) (2)-EW-DC IVTR-USER MANUAL-201301130
TABLE OF CONTENTS
WELCOME AND PLEASE READ THROUGH MANUALS
2
4
5
6
7
8
9
10
11
12
13
14
18
19
19
22
23
24
28
29
29
31
31
34
40
46
WIRING DIAGRAMS
RECOMMENDED TOOLS FOR INSTALLATION
SYSTEM LAYOUT & INSTALLATION CLEARANCE
INSTALLATION-LOCATION SLECTIONS
LENGTH AND ELEVATION LIMIT OF INSTALLATION
INSTALLATION-INDOOR UNITS
CONNECT REFRIGERANT PIPES BETWEEN INDOOR AND OUTDOOR UNITS
PIPING GUIDE
REMOTE CONTROL-BUTTON NAME & FUNCTIONS
OPERATION OF REMOTE CONTROL
OPERATION AT EMERGENCY
CLEAN AND CARE
PROTECTION SIGNS AND ERROR CODES
CHECKING UNITS PRIOR TO CONTACTING YOUR TECHNICIAN
EXPLOSIVE VIEW AND SPARE PARTS LIST
CUSTOMER AND TECHNICIAN MUST READ
USER NOTES AND INSTALLATION/SERVICE/MAINTENANCE NOTES
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's recommendations, suggestions, and requirements, written in the
following pages and other documents, is the first step to ensuring a smooth and trouble free installation & proper
operation of your products for many years to come.
The quality of the installation plays a key role in whether the units will work well and for an extended period of
time. The information we provide in our manuals is for the sole purpose of reminding you and your installer.
It is our ultimate goal to help insure that your YMGI units are installed properly and correctly from the very
beginning to the very end. This ensures that your YMGI units will work well and not only provide a comfortable
room but also peace of mind.
YMGI doesn't recommend nor allow any do-it-yourself (DIY) installation (partially or fully), since DIY will cause
problems sooner or later to your units and your upfront saving is Not saving down the road.
YMGI warranty doesn't cover any DIY units.
If you have any questions about your unit or even doubt if the unit has any problem, you can first check against
the mannds. If you can not find answers, then you can contact your local installer or service technician to
physically inspect the unit. If at the time of inspection the installer or service technician have any questions they
can contact YMGI technical support division directly at:
Toll Free Number: (866)833-3138
Email: techsp@ymgigroup.com
IMPORTANT NOTE-YMGI HOLDS FINAL EXPLANATION:
YMGI Group, POB 1559, O'Fallon, MO 63366 is the only party who holds the final explanation (in authorized
writing) about any descriptions or data in YMGI-published materials, including but not limited to
YMGI product brochures, manuals, pamphlets, catalogs, videos and any other media. YMGI's distributors,
installers, dealers, agents, customers or any other third parties shall not supersede YMGI to make any
explanation about what YMGI-published materials mean. Any uncertainty or questions, arising from YMGI
distributors, installers, dealers, agents, customers or any other third parties, should be passed directly to YMGI
for an explanation in writing.
All Units Shall Be Installed by Experienced or Licensed Contractor Or
Technician. Read Manuals before Installation.
Following NEC, State and Local Codes and Installation Instructions of All
Units, Otherwise Unit Warranty Will Be Void and Serious Damage To People Or Property May Be
Caused.
YMGI Group Will NOT Take Any Responsibilities for Any Damage or
Loss Due to Do-It-Yourself(DIY) self-installation and other Improper Installation or Operation or
Natural Disaster.
Don't Supply Power until All Wiring and Tubing and Checking is
Completed. Ground the Unit Following Instructions and NEC, State and Local Codes.
Connect All Wiring Securely. Loose Wire or Other Bad Contact May Cause
Arc or Overheating and Fire Hazard.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P1 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P2 OF 46
MUST READ-1
WELCOME AND PLEASE READ THROUGH MANUALS
INSTALLING TECHNICIAN/CONTRACTOR'S JOBS AND RESPONSIBILITIES
LIMITED PRODUCT WARRANTY POLICIES
LIMITED PRODUCT WARRANTY REGISTRATION CARD
WARRANTY AND TECHNICAL SUPPORT
IMPORTANT NOTES
INDOOR UNIT DIAGRAM
SPEC.SHEET
UNIT DIMENSIONS, MOUNTING BRACKET CLEARENCE
WELCOME AND PLEASE READ THROUGH MANUALS
INSTALLING TECHNICIAN/CONTRACTOR'S JOBS AND RESPONSIBILITIES
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
1. Be sure to hire only one certified, licensed HVAC Company to complete 100% of the installation so that all
details of the installation are clear, complete and well taken care of.
2. Be sure to have ONLY the licensed HVAC professional perform all parts of the installation. Factory Warranty
will be lost if any portion of the installation is not performed by licensed HVAC contractor. DIY or partial DIY will
void ALL factory warranties. One example of partial DIY would be calling the HVAC technician to release
refrigerant or the sort while other installation has or is to be conducted by non-HVAC technician.
3. With hiring a technician that is offering their services as a "side job" and not through their licensed HVAC
company may pose a possible risk of an incomplete or unsatisfactory installation of no guaranteed
workmanship and lack of further service, if needed.
4. Have the installing technician read in full the installation manual of the product model you have. Some details
may vary and some may be the key to determine the success and quality of the installation. Experience with
certain manufacturer may not be applied fully to another manufacturer. For example, wiring, refrigerant
adjustment and trial testing procedures may differ from manufacturer to manufacturer and model to model.
Any ignoring or negligence may cause unit failure or damage which could be irrevocable and permanent.
5. All of YMGI's products are fully tested and have passed rigorous safety and performance standards and others
related to the industry, before being packed and shipped. YMGI only uses famous brands as suppliers for their
parts that are also known for their high quality and performance. The quality of the installation plays a key role
as much as up to 90% importance in your unit's overall performance and lifetime. A poor installation can result
in unit failure and inefficiency either immediately or over a period of time.
6. Some licensed contractor/technician may make a mistake some time. YMGI doesn't supervise nor is able to
control their installation.It is key that the installer take each variable into account during the initial
installation in order to ensure a complete and professional installation and properly working units.
The following will cause damage to the unit and key components and the loss of your unit's factory
warranty:
1. Any foreign substances introduced into the system as a result of failure of not sealing the ends of the
refrigeration piping before pulling through structures at time of installation.
2. Not installing an oil P-trap in the suction copper line where indoor unit is located 18' or more below outdoor unit.
3. Cross piping and/or cross wiring on any units including more than one single zone or a multi zone system.
4. Not conducting a positive leak check by charging the system with dry-nitrogen and soap bubble testing.
5. Not conducting a negative leak check by evacuating the copper lines for 30 minutes. Vacuum must be held at
500 micron or better for at least 5 minutes, starting from 5 minutes after the vacuum pump is shut off.
6. Not conducting a positive leak check prior to the negative leak check.
7. Not selecting the correct size of wire or circuit breaker.
8. Not answering ALL questions in the technician's checklist inside the warranty registration form.
P3 OF 46
P4 OF 46
MUST READ-1
MUST READ-1
The following may be overlooked, ignored, or treated as not a problem during your installer's installation,
but actually will cause your unit to underperform or even cause unit failure.
1. Any kinks or improper bending of the copper piping.
2. Any improper flaring or not centering of the flare with the nut, or not tightening any connection.
3. Not trial testing each indoor unit individually.
4. Not reading technical data (temp/time/pressure/current) after the system is stabilized (normally compressor
needs to work at least 10 minutes). Data read too early may lead to inaccurate or false judgment or even a
false sense of security.
In an effort to protect our customers from any possible faulty installation which can lead to premature unit failure,
we like to provide the above information to you in addition to the technician. You can judge yourself and
observe while your system is being installed, though your observation may not be treated as any guarantee
whether your system would be installed properly and professionally. If at any time you feel there may be an
installation issue, please have your technician contact YMGI at (866)833-3138 x 703 to clear your questions.
1) Check with the customers to find out detailed information of structure to be conditioned, local weather (typical design and
extreme temperature/humidity conditions, cooling and heating hours), previous and existing HVAC equipment, usage and
dependence on the new HVAC equipment or the YMGI products.
2) Performing a cooling/heating load calculation by using commercially available professional programs/methods such as
Right-J (Manual J) for residential HVAC applications/jobs and Right-CommLoad (ASHRAE RTS/CLTD) for light commercial
and commercial HVAC applications/jobs.
3) Check with YMGI distributor/sales or contact manufacturer directly to obtain information to fully understand YMGI products,
including but not limited to product features, cooling/heating performance-at standard ratings/conditions and extreme
conditions, allowed indoor and outdoor temperature/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 EPA # in your proposal/quote.
6) Make sure you are the only party to perform the whole installation job and you will not sub-contract any part of the
installation to any non-licensed parties/persons. You will be solely responsibile for the full installation that you have been
contracted for.
7) Check to make sure you have all the materials you need to properly and correctly finish the installation. The YMGI units
and accessories may be just a portion of what you need. YMGI employees and YMGI distributors/sales, dealers and agents
are not installers and may only be able to provide suggestions to you, but you are the only sole decision maker to
determine what other materials you must need and/or the customer may want to fulfill the installation job.
8) Check against both NEC and your local codes to make sure all the installation of YMGI units and accessories meet these
requirements.
9) Connect the unit to correct electrical power source. In the area where lightning or storm incurs frequently, a proper type/
size of power surge protector needs to be installed between the outdoor unit and power source.
10) Select proper types and sizes of HVAC circuit breakers, disconnect switch boxes, wires and conduits from circuit breaker
to disconnect box and then from disconnect box to outdoor unit.
11) Select proper location to mount indoor units and outdoor units with all factory requirements being followed (cooling/
heating/air is not blocked or restricted, mounting structure is secure, aesthetical looking, installation convenience is
considered, maintenance/service clearance is ensured and all applicable codes are met and etc.).
12) Cap/tape the two ends of every copper line before running them through structures to keep from any foreign substances
entering into pipe and causing contamination. Label them A-A, B-B, C-C, D-D, or other marks on each pair of copper
line/wiring cable set to keep from any possible cross-piping or cross-wiring in multiple zone installations or where pipes for
different single zone systems are close to one another.
13) Secure the wiring cables that connect between indoor unit and outdoor unit, following applicable NEC and local codes for
your particular installation. If there is no special NEC or local code to govern how these wires are to be installed, you can
tape/cable tie them along with insulated copper line.
14) Tighten all pipe and wire connections to keep from any possible leakage or false connection.
15) Conduct positive pressure leakage checking of inter-connecting copper lines between each indoor unit and outdoor unit by
charging dry-nitrogen at outdoor unit service port (note: don't back-seat stopping valve, at this time). Liquid soap solution
shall be applied at all pipe connections to check for leakage. A1/4-5/16" hose/valve adaptor may be needed if you have
traditional manifold of 1/4" connection hose.
16) If there is no positive leaking, then conduct negative pressure leakage checking of inter-connecting copper lines between
each indoor unit and outdoor unit by pulling vacuum at outdoor unit service port (note: don't back-seat stopping valve, at
this time) and checking if the vacuum level 500 Micron can be held for at least 20 minutes.
17) If there is no leakage found at refrigeration pipe connections, flip up the indoor unit face panel and remove filter, carefully
pour some clear water onto the up-right aluminum coil surface to test if the water can drain out of each indoor unit freely
without any leakage being found.
18) If there is water leakage found, locate the source of the leak and correct. Only after everything is clear engage the correct
electrical power to the system.
19) Then back-seat stopping valves of outdoor unit to release refrigerant from outdoor unit into inter-connecting pipes and
indoor unit.
20) Check to make sure both indoor unit and outdoor unit are powered on correctly before controlling the indoor unit to
operate in fan mode first. Then move on to test cooling, dehumidifying/drying, heating and other modes.
21) Read refrigerant pressures and pipe/valve temperatures only until the system is stabilized (normally 10 minutes after
cooling/heating mode is started successfully). Put this data into the technician checklist in the lower half section of the
Limited Product Warranty Registration Card/Form.
22) Adjust refrigerant charging level (remove refrigerant if pipe is shorter/temperature is colder; add refrigerant if pipe is
longer/temperature is warmer), following manufacturer's instructions, if average pipe length is shorter or longer than 25'
and pressure/temperature readings at outdoor unit service valves are not falling into normal ranges.
23) Explain to the user/owner(s) about proper unit operation and maintenance and leave your contact information for them to
reach you easily.
24) If the customer finds the unit doesn't work properly and cannot resolve the issue themselves, check the customer's
units/parts/accessories and correct the problem if there is any. Communicate with YMGI-technical support line (866)8333138 x 703, if needing help.
Following these requirements will aid in ensuring the units to be installed to the general HVAC practicing standards and
necessary factory requirements, finding any possible problems early, preventing any further damage to the unit and helping
ensure a properly working unit over its lifetime.
ATTENTIONS
LIMITED PRODUCT WARRANTY POLICIES
LIMITED PRODUCT WARRANTY REGISTRATION CARD
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.
For
YMGI
Use
Only
The Company the
Unit Was Sold Though:
Shipping Packing
List Number:
Registration Card
Serial No.
Did the Company
Pay to YMGI:
HVAC Contractor/
Technician--Name
Date the Filled Registration
Card YMGI Received:
Installation Invoice Attached
to the Registration Card
Hired YMGI-Recommended
HVAC Contractor/Technician?
Unit(s) Work
Successfully (Yes/No):
Outdoor Serial Number (One Outdoor
Unit, One Registration Card/Form):
For Multi
Zone Units
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).
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
Indoor
Serial
Number:
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.
LIMITED PRODUCT WARRANTY
REGISTRATION CARD / FORM
Unit #1
Unit #2
Unit #3
Unit #4
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:
Warranty
Approved
Warranty
Denied
Unit #5
Unit #6
Unit #7
Unit #8
Phone:
Email:
Country:
Fax:
YMGI-Recommended Contractor/Technician:
Phone:Fax:
Email:
City:State (Province):
License Approved or Certified by:
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)
1) Are you the only one to install whole system?
If not,
% of installation done by you (HVAC technician).
2) What had been done, prior to your arrival?
3) Did you read the User Manual and Installation Instruction, before you
started the installation?
4) Who unpacked the unit and accessory boxes to check for damage?
5) Supply electrical power V/Ph/Hz measured at wiring terminal block of
Indoor unit:
outdoor unit:
6) Incoming electrical power V/Ph/Hz measured at terminal blocks of
indoor unit:
outdoor unit:
7) Wire gauge, length and terminal colors between circuit breaker/
disconnect switch to outdoor unit:
8) Wire gauge, length and terminal colors between each indoor and
outdoor unit: Unit A
Unit B
Unit C
Unit D...
9) The size of HVAC circuit breaker/fuse or disconnect switch to the
outdoor unit:
10) Are the inter-connecting wires and copper lines between indoor and outdoor
units installed/covered/protected by line set covers, or anything else?
11) What is the refrigerant pipe length between each indoor unit and the
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
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 -)
14) Did you check the indoor unit for condensate leakage and refrigerant
leakage, before and after connecting them?
15) Where is the outdoor unit located?
Ground wall balcony roof other
location or pad
Is the outdoor unit anchored to
ground or secured onto wall
bracket?
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?
17) Were the refrigerant pipe ends capped or taped seal, prior to running
them through structures to keep debris from entering the copper lines?
18) Have you checked and run cooling or heating, one unit by one unit, all
working fine?
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?
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?
21) Did you check if the compressor can be started and stopped in a
correct (design) manner?
22) If copper length were not made to the supplied or recommended
refrigerant pipe length, how much refrigerant added or deducted?
23) Measured refrigerant pressures at outdoor service suction valve, when unit
was st.
Heat pump (PSI):
Cooling (PSI):
Outdoor Ambient Temp. (OF):
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
25) Have you checked all unit functions, with customer's witness, and all
functions are correct?
26) Did you show the user how to operate the unit? Did he/she understand you?
27) Do you provide regular one-year free technical service for this
installation?
28) Do you list the working details in the invoice and leave a copy to the
customer?
Installation Finished and Unit Works Successfully.
Print Name of Installation HVAC Technician:
Signature:
Installation Finished and Unit Works Successfully.
Print Name of Owner:
Signature:
Date and time:
Date and time:
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.
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.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P5 OF 46
P6 OF 46
WARRANTY POLICIES
AND REGISTRATION
CARD/FORM
WARRANTY POLICIES
AND REGISTRATION
CARD/FORM
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.
WARRANTY AND TECHNICAL SUPPORT
IMPORTANT NOTES
YMGI warrants to the purchaser/owner(s) that YMGI products be free from defects in material and
workmanship under the normal use and maintenance, with the standard Limited Product Warranty
Policies that comes with the unit or sales package.
SAFETY WARNINGS
READ THESE SAFETY WARNINGS COMPLETELY PRIOR TO ANY USE
YMGI IS NOT RESPONSIBLE FOR
Ground connection
Forbidden
Disconnect the plug
Imperative
These precautions are essential and must be strictly observed.
DO NOT draw on the power cord or refrigeration
lines. Install them in secured positions. PVC line set
cover is recommended to protect against rain and
sunlight and other potential damage.
DO NOT blow the cold air directly towards people
for prolonged period. Otherwise, people may get
cold.
DO NOT undersize wires. Do not connect several
circuits to one breaker. Don't undersize or oversize
circuit breaker, otherwise power failure or fire may be
caused.
DO NOT wire or open unit while unit is running.
Make sure to shut off all circuits prior to inspecting or
servicing the unit. Sparks or fire may occur. It may
cause a shock to people.
DO NOT pull on the power cord or refrigeration lines.
Install them in a secured position. A line set PVC
cover is recommended.
DO NOT install the indoor unit close to cooking
surfaces or ventilation systems. Poor placement
could decrease efficiency and waste energy.
DO NOT install the unit in places where there is
exposure to flammable materials or gas.
DO NOT apply chemical solvents, flammable
insecticides, or abrasive materials on unit. Clean the
unit only with a soft dry cloth.
DO NOT use wire or circuit breakers that do not meet
electrical safety standards. Several circuits shall
be connected to one breaker.
DO NOT continue to operate the unit if there is any
abnormal odor, burning, scorching, or smoke. Stop
unit operation and disconnect electrical power to the
unit immediately, and call your technician.
DO NOT install unit in a damp laundry room or near
flammable gas. All units must be protected by
certified electrical circuit breakers in accordance
with all safety codes.
DO NOT use the system for anything other than what
it was designed for or any non-HVAC purposes. Do
not store or install them near food, paint, or other
chemicals.
DO NOT use the unit in cool or dry mode for
prolonged periods where humidity is higher than 90%.
DO NOT operate the unit for prolonged periods
without refreshing ambient air. Open the door or
window periodically to bring in fresh air if possible.
CONTACT FOR FIELD SERVICE OR REPAIR
The following people, in a prioritized sequence, will take care of your request or issue:
1) The original installer; otherwise,
2) Your current service contractor; otherwise,
3) Authorized 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,
The original licensed installer or current service contractor should be contacted first of all, since they installed
the unit and/or know more details than anybody else.
They will check the unit and find out the problems with the professional knowledge about HVAC and electric
product installation by using special tools or instrument.
They can contact YMGI technical support for technical help during unit installation or inspection.
Product model and serial numbers needed, which can be found on unit nameplate sticker, so that our
technician can quickly identify the unit, parts and wiring diagrams, among our many products and models.
3) The distributor; where the unit is purchased from otherwise,
4) YMGI Technical Support:
Tel: (866) 833-3138*703
Email: techsp@ymgigroup.com
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P7 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P8 OF 46
BRIEF UNIT INFO
WARRANTY POLICIES
AND REGISTRATION
CARD/FORM
* Damage or repairs required as a consequence Customer do-it-yoursely(DIY) installation and/or any other faulty
installation or improper application.
* Damage or repairs needed as a consequence of any misapplication, abuse, improper servicing, unauthorized
alteration, or improper operation.
* Damage as a result of floods, winds, fires, lightening, accidents, corrosive atmosphere, or other conditions
beyond the control of YMGI.
* Any 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.
* Failure to start due to voltage conditions, blown fuses, open circuit breakers, or other damages due to the
inadequacy or interruption of electrical service.
* Parts not supplied or designated by YMGI.
* Products installed outside USA or Canada.
* Regular equipment maintenance or field service or field inspection.
* Any problems due to improper cooling and heating load calcuation of the room/building the air conditioner/heat
pump system is to be installed. Equipment users can get the calculation schedule from your room/building
architect or your installation or related service HVAC contractor, who should have the knowledge and the tools
to do these calculations correctly.
* Any problems due to improper sizing and selecting air conditioner/heat pump system. These equipment sizing
and selection work should be conducted by either your room/building architect or your installation or related
service HVAC contractor, who should have the knowledge and the tools to do these calculations correctly, and
get your approval, before purchasing the air conditioner or heat pump equipment.
* Any problems due to improper installing of the air conditioner/heat pump system. Installation should be
conducted by currently licensed HVAC technician, following manufacturer installation instructions, all governing
safety codes, with care and professionalism.
* Any problems due to improper operation of the air conditioner/heat pump system. Users shall keep the manual
and refer to it for the correct understanding of how the unit will work and how to operate the unit correctly.
* Any problems due to improper maintenance of the air conditioner/heat pump system. Like a car, regular
maintenance or yearly checking is necessary for the unit to work properly for you, before the season comes. For
example, air filter shall be checked for cleaness from time to time. Remote control batteries shall be checked for
enough power, before judging the unit is not working...
SPEC SHEET
INDOOR UNIT DIAGRAM
Items
Digital
display
Unit / Conditions
WMMS-09EW-V2B(59)2
WMMS-12EW-V2B(59)2
WMMS-18EW-V2B(59)2
WMMS-24EW-V2B(59)2
Voltage/Ph/Hz
208-230/1/60
208-230/1/60
208-230/1/60
208-230/1/60
Allowed Voltage Range
187-253V
187-253V
187-253V
187-253V
High/Standard/Low
12000/9000/4400
14000/12000/4500
21500/17000/6800
26500/22800/9600
Max./Min.
12500/3400
14500/3800
22500/9500
28500/9800
ID 70/60, OD 47/43F
9500
13000
18700
27400
ID 70/60, OD 17/15F
8800
11600
16600
23600
Power Supply
Cooling Capacity (Btu/h)
Heating Capacity (Btu/h)
Pipe/wire
wall sleeve
Guide panel
Air wall sleeve
8000
9100
13800
20600
Btu/h.W
22-16
20-16
18-16
18-16
HSPF
Btu/h.W
9.8-8.2
9.6-8.2
10.2-8.2
10.2-8.2
Duhumidifying Capacity
Pints/Hr.
1.7
2.96
3.8
5.28
Air Flow (CFM)
High/Medium/Low
300/253/218
330/253/218
780/650/550
800/700/600
Air-throw (Ft.)
Horizontal Installation
External Static Pressure
Water In.
0
0
0
0
Pressure dB(A) (H/M/L)
34/30/26
36/32/26
45/42/40
48/46/44
Power dB(A) (H/M/L)
44/40/36
46/42/36
55/52/50
58/56/54
Model
FN20T-PG
FN20T-PG
FN20W-PG
FN25B-PG
Shaft
Single
Single
Single
Single
Speed (RMP, H/M/L)
1050/980/920
1050/980/920
1200/1050/900
1150/1000/850
Output (W)
20
20
20
35
RLA (AMP)
0.2
0.2
0.25
0.45
35-30 Upon Mounting Height/Speed/Temp.
Sound Level
Fan Motor
Display icon (May vary open models):
Capacitor (uF)
1
1
1.5
2.5
Type-Piece
Cross Flow-1
Cross Flow-1
Cross Flow-1
Cross Flow-1
Diameter x Width (In.)
φ3.6 x 25.4
φ3.6 x25.4
φ3.9 x 28
φ3.9 x 30
Model
MP24AA
MP24AA
MP28VB
MP35XX
Fan Wheel
Lineset PVC cover
Swing/Step Motor
Notes:
Unit or part appearance may look different, as product
develops and/or engineering changes without prior or
further notice.
Piece
2
2
2
2
Output (W)
2.4
2.4
2
2
Input Power of Ele. Heater
Type-W
NA
NA
NA
NA
Electrical Protection Fuse
PCB / Transformer
T3.15A 250V / 0.2A
Type
Evaporator Coil
Color
Alu. Fin/Inner Grooved Copper Tube
Blue
Blue
Blue
Blue
Sealed by Dry Nitrogen
Yes
Yes
Yes
Yes
Flare/Nut-Liuqid + Gas
1/4" + 3/8"
1/4" + 3/8"
1/4" + 1/2"
1/4" + 5/8"
Drain Hose Connection
OD (In.)
0.67
0.67
0.67
0.67
Condensate Pump
Installed-Lift (In.)
NA
NA
NA
NA
Refrigerant Environmental Friendly
R410A
Yes
Yes
Yes
Yes
Type-Feature
Standard-Washable
Standard-Washable
Standard-Washable
Standard-Washable
Qty.
2
2
2
2
Copper Line Connections
Filter
LINESET COVERS
Not to damage line sets.
INLTS
STRT
COUP
COUP-H
OFST
Clean Coil Surface
Anti-Mildew Function
Yes
Yes
Yes
Yes
Pre-heating Function
Anti-Cold Blowing
Yes
Yes
Yes
Yes
Memory of Previous Set-ups
Power is Lost/Resumed
Yes
Yes
Yes
Yes
Auto-Restart Function
If Power is Resumed
Yes
Yes
Yes
Yes
Net WxHxD (In.)
30.3 x 9.8 x 7.5
32.7 x 11.2 x 7.9
37 x 11.7 x 7.9
39.7 x 12.4 x 7.9
Package WxHxD (In.)
33.7 x 13.0 x 10.4
35.7 x 15.2 x 10.7
39.8 x 15.0 x 11.2
42.2 x 15.6 x 12.3
Net (LBs)
18.7
24.3
28.6
35.2
Unit Dimensions
Unit Weight
ELBF9
ELBF4
SOFT
TEE ENDF
RDER
Loading Capacity
Packaged (LBs)
27.5
30.8
37.4
46.3
20'/40'/40'HQ
378/792/890
240/480/540
207/431/488
200/410/450
Note: The above data are subject to change without prior notice.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P9 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P10 OF 46
BRIEF UNIT INFO
BRIEF UNIT INFO
Filter
ID 70/60, OD 17/5F
SEER
UNIT DIMENSIONS, MOUNTING BRACKET CLEARENCE
WIRING DIAGRAMS
UNIT DIMENSIONS
WMMS-09EW-V2B(59)(2) and WMMS-12EW-V2B(59)(2)
Model
W
H
D
09K
30.3
9.8
7.5
12K
32.7
11.2
7.9
18K
40.2
12.2
9.0
24K
39.7
12.4
8.6
PIPE-IN
PIPE-MID
TEM.SENSOR TEM.SENSOR
RT3
RT4
PIPE-OUT
TEM.SENSOR
RT2
ROOM
TEM.SENSOR
FAN
MOTOR
RT1
4
3
2
TUBE-1
TUBE
TUBE-0
Connect Terminals N(1) and 3 to
Get 208-230/1/60 for Condensate
Pump (Field Installation)-Per
Pump Installation Instructions
M1
~
PG
ROOM
PGF
H
N(1)
N1
JUMP
COMU
AP2
SWING-UD
DISP1 DISP2
W
BK
AC-L
Fuse on PCB
2
3
BN
TR-IN
TR-OUT1
YEGN
E
D
Mark for right outlet pipe hole
OUTDOOR UNIT
BRIEF UNIT INFO
CAP
Mark for left outlet pipe hole
TC
PTC
M2
~
AP1
TRANSFORMER
SWING
MOTOR2
DISPLAY
INDOOR UNIT
WMMS-18EW-V2B(59)(2) and WMMS-24EW-V2B(59)(2)
PIPE-IN
PIPE-MID
TEM.SENSOR TEM.SENSOR
RT3
RT4
Refrigerant pipe
Condensate drain hose
PIPE-OUT
TEM.SENSOR
RT2
ROOM
TEM.SENSOR
FAN
MOTOR
M1
~
RT1
4
3
2
TUBE-1
TUBE
TUBE-0
Connect Terminals N(1) and 3 to
Get 208-230/1/60 for Condensate
Pump (Field Installation)-Per
Pump Installation Instructions
PG
ROOM
PGF
XT
MOUNTING BRACKET CLEARENCE
JUMP
COMU
AP2
Fuse on PCB
Ceiling
DISP1 DISP2
3.75"
N(1)
N1
SWING-UD
TR-IN
TR-OUT1
AC-L
KEY
2BK
2
3
3BN
4YEGN
E
Left wall
7.85"
7.85"
GROUNDING PANEL
Right wall
TC
M2
~
AP1
DISPLAY
SWING
MOTOR2
PTC
E
TRANSFORMER
X303
EVAPORATOR
MICRO SWITCH
INDOOR UNIT
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
Note: Actual unit/part may appear differently from what are illustrated above.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
OUTDOOR UNIT
1BU
CAP
P11 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P12 OF 46
BRIEF UNIT INFO
XT
BU
RECOMMENDED TOOLS FOR INSTALLATION
SYSTEM LAYOUT & INSTALLATION CLEARANCE
1) Mounting Indoor & Outdoor
Units and Running
Piping/Wiring
CLEARANCE REQUIRED AROUND UNITS-DUAL ZONE-2
Indoor unit A
OVER 2"
Indoor unit B
OVER 4"
OVER 4"
INSTALLER'S
INSTRUCTION
INSTALLER'S
INSTRUCTION
Ruler (Not Shown)
Stud-Finder
Dry-Wall Saw
Electric Drill
3" Hole Saw
Drill Extension
Hammer Drill and Bit (Not Shown)
Measuring Tape
Level
Flash Light
Screw Driver (Phillps and Flat)
Hammer
Knife
Scissors
Goggled Glass
Mask
Gloves
Ladder
2) Refrigeration Related Work
OVER 80"
Flat Surface Wrentch (Two)
Flare-Nut Tool Set (Not Shown)
Hex Head Key Set
Torch for AC Application (Not Shown)
Heat Absorbtion Flux
Nitrogen (Not Shown)
Soap Bubble (Not Shown)
Vacuum Pump
Helium Leakage Check (Not Shown)
Manifold
3) Electrical Related Installation
4) Trial Running Units and
Inspection
Clamp Meter (Not Shown)
Manifold
Infra Thermometer (Not Shown)
OVER 8"
Wire Cutter
Wire Stripper
Sharp Plier
Cable Ties
Black Tape for Electrical Use
lectrical Meter
0"
R1
E
OV
OV
ER
10
"
"
ER
20
OV
OV
ER
10
"
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P13 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P14 OF 46
SYSTEM LAYOUT & INSTALLATION CLEARANCE
SYSTEM LAYOUT & INSTALLATION CLEARANCE
CLEARANCE REQUIRED AROUND UNITS-TRIPLE ZONE-3
CLEARANCE REQUIRED AROUND UNITS-QUAD ZONE-4
Indoor unit A
Indoor unit A
Indoor unit B
Indoor unit B
OVER 2"
Indoor unit C
OVER 4"
Indoor unit C
OVER 4"
INSTALLER'S
INSTRUCTION
INSTALLER'S
INSTRUCTION
OVER 2"
OVER 80"
Indoor unit D
OVER 4"
OVER 4"
OVER 80"
OVER 8"
OVER 8"
0"
0"
R1
R1
E
OV
E
OV
OV
ER
OV
ER
10
"
10
"
"
ER
"
20
ER
OV
20
OV
OV
ER
OV
ER
10
"
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
10
"
P15 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P16 OF 46
SYSTEM LAYOUT & INSTALLATION CLEARANCE
INSTALLATION-LOCATION SELECTIONS
CLEARANCE REQUIRED AROUND UNITS-FIVE ZONE-5
All Units Shall Be Installed by Licensed Contractor or Technician.
Indoor unit A
Read Manuals before Installation.
* The location and structure shall also be convenient for both installation and service.
* The location shall NOT be where discharge air and noise could bother your neighbor.
* The location shall NOT be somewhere drain may cause any damage to property or bother the neighbor.
* The location shall NOT be somewhere brazing work may cause fire or smoke to the materials around.
* The location shall NOT be somewhere near flammable gases.
* The location shall NOT be in or close to corrosive gases.
* The location shall NOT be somewhere children can access.
Indoor unit B
CAUTION & SUGGESTIONS TO FOLLOW PRIOR TO INSTALLATION
Indoor unit C
Indoor unit D
INSTALLER'S
INSTRUCTION
OVER 2"
Indoor unit E
OVER 4"
OVER 4"
BASIC REQUIREMENTS FOR INSTALLING POSITION
Installing in the following places may cause unit malfunction. If for some reason it is unavoidable, please
contact the YMGI technical support before installing the unit.
* Place where strong heat sources, vapors, flammable gas or volatile objects are emitted.
* Place where high-frequency waves are generated by radio equipment, welders and medical equipment.
* Place where a lot of salinities such as coastal areas.
* Place where oil (machine oil) is contained in the air.
* Place where Sulfur gas is present such as areas close to hot springs.
* Other place with special circumstance.
OVER 80"
OVER 8"
SELECTION OF INDOOR UNIT INSTALLING POSITION
1) The air inlet and outlet vent should be far from the obstruction, make sure that the air can be blown through
the whole room.
2) Select a position where the condensing water can be easily drained out, and the place is easily connected for
outdoor unit.
3) Select a location where children can not reach.
4) Select a location that is strong enough to support the full weight of the unit and the vibration so as not to
increase room noise while the unit is running.
5) Be sure to leave enough space to allow access for routine maintenance. The height of the installed location
should be 98.43 in or more from the floor.
6) Select a place about 1m or more away from TVset or any other electric appliances.
7) Select a place where the filter can be easily taken out.
8) Make sure that the indoor unit is installed with accordance with the dimension diagram.
0"
1
ER
OV
OV
ER
10
"
PIPING AND WIRING SIZES-UNITS
"
0
R2
Unit
Connection Copper
Pipe Sizes
Min/Max.Length
+/- Elevation
Wires from Outdoor
to Indoor Unit
Mini. Wire Size
Outdoor-Indoor Units
Fuse Is Factory
Installed
09K
12K
18K
24K
1/4+3/8"
1/4+1/2"
1/4+1/2"
1/4+5/8"
15/50/30/15
15/50/30/15
15/75/30/15
15/75/30/15
N(1)/2/3/G
N(1)/2/3/G
N(1)/2/3/G
N(1)/2/3/G
18AWG
18AWG
16AWG
16AWG
At Indoor Control Board
At Indoor Control Board
At Indoor Control Board
At Indoor Control Board
E
OV
OV
ER
10
"
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P17 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P18 OF 46
INSTALLER'S
INSTRUCTION
Check the unit for damage and missed parts or accessories. If damage is found or parts are found missing, call
the distributor right away.
Spin fan wheels or blades to check if and make sure they can rotate freely. If fan wheel scratches with housing,
call the distributor right away and do not to proceed with the installation before it is fixed.
Check the unit to make sure no foreign materials has been left in the unit.
Check all the parts and accessories that are needed other than those provided with the unit.
It is strongly recommended to only use YMGI supplied or recommended parts and accessories.
Be sure a properly sized circuit breaker is for the electric power to the units.
Pre-build the support platform on the ground or bracket for the wall before or during construction and before
installation. Refer to the table below for footprint dimensions.
Read installation instructions of all units thoroughly.
Ask rep./distributor/us anything you are not sure about.
Get your tools and parts ready for installation.
LENGTH AND ELEVATION LIMIT OF INSTALLATION
INSTALLATION-INDOOR UNITS
* Either the indoor unit or the outdoor unit can be higher, but the height difference must follow with the stated
requirements.
* Try to reduce the bending of the piping line as much as possible so as to avoid possible negative impacts upon
the performances of the units.
* Make P-trap if elevation drop difference is more than 25", as illustrated below.
Indoor unit
Outdoor unit
Drop
P-Trap
Lift
Hanger certer
Locate the center where the hole will need to be
drilled.
Drill the holes of 2.5-3Inch diameter. A down pitch
about 1/4" per foot, as illustrated below, is needed
for the hole, in order to drain the condensate
properly.
Align ruler
with straight
line
Hole Diameter: 2.5~3 In
PREPARE INDOOR UNIT- COPPER LINE SET/DRAIN HOSE
If pipes need to come out of the right side (facing
the front of indoor unit) of the indoor unit, snap off
portion《1》on plastic casing.
≤18 ft
Outdoor unit
DRILL 3IN HOLE FOR PIPING/WIRING/DRAIN
Indoor unit
Refrigerant Pipe Min/Max. Length, Rise and Drop Height
Min. Length (Ft.)
Max. Length (Ft.)
Max. Rise Height (Ft.)
Max. Drop Height (Ft.)
09-12
15
50
20
28
18-24
15
75
25
35
30-36
15
100
35
50
If pipes need to come out of the left side (facing
the front of indoor unit) of the indoor unit, snap off
portion《3》on plastic casing.
《1》
《3》
《2》
PREPARE INDOOR UNIT- COPPER LINE SET/DRAIN HOSE
* If pipes need to be rerouted to a different direction
from the one preset at factory (towards left side, if
facing the front cover of indoor unit), lay down the
indoor unit on soft cushion or foam. Don't rub the
plastic casing.
INSTALLATION-INDOOR UNITS
INSTALL WALL MOUNT PLATE
* Check unit to make sure the unit is in good shape and ready to install.
* Check to make sure the installation location is firm enough to hold the weight of the whole unit and is
convenient to install, maintain, service and close to the indoor unit but not causing noise or airflow issues to
neighbors.
* Install Indoor unit. Enough anchor bolts/nuts shall be used to secure mounting plates for indoor units.
Brackets should be at level position.
Install Mounting Plate and Drill Hole for Combination of Copper Line/Wire Cable/Drain Hose
NOTES:
Anchors must be put into the holes, where the solid
arrows are pointing, as shown above, to secure the
mounting plate firmly and to hold the weight of indoor
unit. If more screws/anchors are to be used, make
sure to keep the two holes close to each other, at
least 2 inches apart.
Mounting plate should be attached to the structural
part of the wall. Minimum clearance, as shown below,
is required in order to ensure proper airflow and
enough service room.
Steps To Mount Plate:
Locate the central hole at the stud (firn structure)
At least 12"
18" or
more from
sidewall
Slice the
insulation
before
bending.
* In order to keep from damaging the pipes, need to
bend the copper tubing set gently and slowly (finish
bending no less than 10 seconds/90 degree), by
holding at the root of the original 90 degree bend
nicely and firmly. Don't rub two copper lines during
bending. Better to cut off the insulation and bend
the two pipes one by one, not two together.
Hold the 90
degree bend
root, bend one
tube one time,
slowly, no
quicker than
10 seconds/
90 degree
bend.
* If pipes need to come out of the rear side (facing
the front of indoor unit) of the indoor unit, no need
to snap off anything.
18" or more
from sidewall
Respect the slope
Anchors of selftappping screw
Mounting Plate
a
c
Plumb
Drill mounting holes
b
to make sure at least
either one of three
dimensions a, b and
c is 16" center to
center.
* Mark drill positions. At least 4 anchor holes, one at each perimeter corner of the plate are needed to secure the
plate, where the bold arrows are pointing, as shown in the picture above. Refer to the specification sheet for
unit weight so that enough anchors are installed at proper positions.
* Pre-drill guiding holes where are marked for anchors or screws on the wall
* Confirm the position of the holes and finish drilling to the depth needed for anchors (NOT 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.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P19 OF 46
INSTALL DRAIN PIPE AT INDOOR
The drain hose must be placed beneath the copper
pipes and MUST NOT be hunched or bended
sharply.
Insulation pad (underlay) should be used where
the pipe contacts the wall.
Drain hose coming with indoor unit
Do not pull the drain hose too hard, otherwise it
may break.
Before passing drain hose through the hold, wrap
with insulation to keep from possible damage.
The copper pipe and the drain hose must be
wrapped by piping wrap.
Drain hose extending to drain line
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P20 OF 46
INSTALLER'S
INSTRUCTION
INSTALLER'S
INSTRUCTION
1,000 Btu/h
If pipes 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.
INSTALLATION-INDOOR UNITS
CONNECT REFRIGERANT PIPES BETWEEN 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.
REFIT DRAIN HOSE FROM THE RIGHT TO THE LEFT SIDE
* If drain hose needs to be refitted from the original
position (right side) to left side of the indoor unit,
careful handing is very necessary.
REFRIGERANT PIPES:
For distance other than 25' between indoor and
horizontal venting condensing units, refer to the
following table for copper sizes.
* Refitting method: remove the drain hose from
original position, without breaking hose. Unplug
the plug at the left side. Apply water-resistant glue
to fit the drain hose and the fitting before securing it.
Refrigerant Valve and Pipe Size/Length
* Apply water-resistant glue onto the plug and fit it
back into the condensate connection at right side.
Condensate connection
at left side
NOTES: May use some sort of clamp to double
secure connections.
HANG INDOOR UNIT
Drain hose
Valve Size
Btu/h
Liq, Gas
Line Sizes at Different Length
15-30ft
31-60ft
09
1/4", 3/8"
1/4 " , 3/8 "
1/4 " , 3/8 "
12
1/4", 3/8"
1/4 " , 3/8 "
1/4 " , 3/8 "
18
1/4", 1/2"
1/4 " , 1/2 "
1/4 " , 1/2 "
24
1/4", 5/8"
1/4", 5/8"
3/8 " , 5/8 "
SHAPE THE DRAIN HOSE
* To drain the condensate easily, the drain hose should be inclined downward (pitched towards drain direction
1/4" per foot).
CONNECT REFRIGERANT PIPES
the mounting plate
Indoor unit
* Snap the plastic casing bottom into the mounting
plate, gently .
the rib of indoor unit
Bottom
* Figures below from the 2nd to 5th show some incorrect practices.
2 in or less
from floor
standing
water
air
water
leak
water
leak
Refrigerant Pipe Length and Height
1,000 Btu/h
09
12
18
24
* Drain hose may be extended using the hose coming with the installation list.
rise up
Twist to cut pipe
90
CUT REFRIGERANT PIPE:
Make sure the pipe section where is to be cut is
straight and smooth. Apply cutting blade straightly
perpendicular to the pipe surface. Don't cut too fast
or too hard. Turn and tighten the tube cutter slowly.
Remove residual left and de-bur at the cutting edge.
The cutting edge should be clear and clean and
smooth.
decline
downward
Use clean refrigeration grade of copper pipe only.
Keep the copper lines from kinking and transmitting
noise to walls, cabinets, etc. Pipe length not to exceed
150', elevation not to exceed 35. Insulate both the
liquid and gas copper lines with at least 3/8" thick
insulation tubes. Band and tape and secure refrigerant
lines. Support copper lines at proper distance apart to
keep tubes from sagging.
Length (Ft.)
Height (Ft.)
23
24.3
31.4
50
3.82
3.6
3.8
5.0
O
Angle Cut too
Inclined hard/fast
De-burring tool
Bad cut
Cut too
hard
Fixed
INSTALLER'S
INSTRUCTION
INSTALLER'S
INSTRUCTION
* Run copper set/wire cables/drain hose through the
wall hole and hang the indoor unit onto the
mounting plate (place the hook on the mounting
plate into the hanging rib at rear side of plastic
casing).
K
Running Interconnection Refrigerant Lines:
Need to properly
select dimensions A per D
Canter line
Expander
Head
Copper line
Pipe flare
expander
Canter line
dip hose in water
water
leak
Connect Copper Pipes-Flare/nut Connection at Both Indoor and Outdoor Units
Proper torque shall be applied to make good connection at female nut, flare and male nut, as recommended in
the following table. Too much torque may damage and break flare/nut seal. Too less torque may not ensure
a good seal. ALWAYS use a pair of wrenches.
STUFF AND SEAL THE HOLE FOR COPPER LINE SET/WIRE CABLE/DRAIN HOSE
* Use putty to seal the wall hole.
* Use clamp (pipe fastener) to secure the pipe at specified position.
Sealed with putty
Trim the extra portion
Clamp
Indoor unit
Secure the piping/
wiring set with clamp
Refrigerant Pipe Flare/Nut Connection Tightening Torque
Flare Nut
Tightening Torque
1/4-3/8"
25 Ft. LBs (350 Kgf.cm)
1/4-1/2"
40 Ft. LBs (560 Kgf.cm)
1/2-3/4"
60 Ft. LBs (840 Kgf.cm)
7/8-1 1/8"
110Ft. LBs (1540 Kgf.cm)
Connect Copper Pipes-Sweat Connection
In this case, put wet rag to protect valves or other components from being overheated. When using flux, rub the
tube surface using steel wool to shine and clean to dry as so to keep the system from any possible
contamination.
Screw
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P21 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P22 OF 46
REMOTE CONTROL-BUTTON NAME & FUNCTIONS
CONNECT REFRIGERANT PIPES BETWEEN INDOOR AND OUTDOOR UNITS
Seal Copper Line Set/Wire Cable/Drain Hose Line Combination
NOTE1: This is a general use remote control. That can be used for numerous air conditioning model numbers.
There may be some buttons on the remote that are not for use with the unit purchased. When these buttons are
pressed you may hear a beep sound emitted from the remote. This will not affect the unit status.
NOTE2: Be sure there are no obstructions between the indoor unit and the remote control. Do not drop or allow
any liquids near the remote. Do not place the remote in direct sunlight or any place that can become very hot.
Pipe insulation
Interconnection cable
Cable tie
IR Control Signal Transmitting
Sealing tape
Pipe
Sealing tape
Unit front panel
Interconnection cable
Refrigerant pipe
LCD
Display
Drain hose
Connecting pipe
Pipe of indoor unit
Interconnection cable
Hanger or
Clamp
Pipe/wire wall
sleeve/ring
Putty (stuffing gaps)
Inside
Pipe
Overlap wrapping
tape..
Cable tie
Wall
Outside
DECREASE
(Temp.,Time)
ON/OFF
FAN
U-TOUCH
INSTALLER'S
INSTRUCTION
TIMER ON
CLOCK
* Run cables along with the refrigerating copper line sets and secure them with tapes at 6 feet apart.
* Wrap tape closely (cover a third of the width of the wrapping tape applied early) to ensure good sealing.
* Tape and seal the end of wrapping tape.
BLOW
TURBO
* Shape the pipe combination gently, without causing kinking, sharp bending, or other damage to it.
INCREASE
(Temp.,Time)
MODE
NOT USED
SWING
TEMP
TIMER OFF
LIGHT
SLEEP
* Fix the pipe combination securely on the external wall with proper clamps, at 6 feet apart.
"ON/OFF" BUTTON: Press this button to turn the
unit on. Press once more to turn the unit off. When
turning the unit ON/OFF, the TIMER, and SLEEP
functions will be canceled. The preset time will remain.
PIPING GUIDE
Set the packed pipes
vertically and then unwinding
slowly.
Use pulley to keep the safe
bending radius..
May also use rolling wheel to
reduce internal pipe tension
and avoid possible
deformation.
Use elbow tool to keep
bending radius.
Don't unwind only one end
of the coiled pipes.
Don't make sharp or small
radius bending.
Don't bend too long pipe
without tools.
Don't make less than 90
degree bend.
"MODE" BUTTON: By pressing this button you can
choose what mode you would like the unit to run in.
When the remote is first turned on the mode
displayed will be the AUTO mode. The temperature
cannot be adjusted in this mode and will not display
on the indoor unit. This is a factory preset
temperature of 78OF. While the unit is in AUTO mode
if the room temperature drops below the factory set
temp of 78OF then the unit will run in HEAT mode until
that temperature is satisfied. If the room temperature
rises above the set temp of 78OF then the unit will run
in COOL mode until the room temperature is satisfied.
The unit itself will determine what mode to run in order
to maintain the temperature of 78OF.Under HEAT
mode the initial set temp will be 82OF (28OC). Under
other mode the initial set temp will be 77OF.
The COOL mode SLEEP profile is as follows:
0
1/2
1
2
Temp.
Hours since sleep set
Ts+2
Ts+1
Ts+1/2
Ts
1(hr)
SLEEP set on
SLEEP set off
The HEAT mode SLEEP profile is as follows:
SLEEP set on
1/2
Ts
Ts-1
SLEEP set off
1
2
1(hr)
Ts-2
Keep minimum bending
radius..
Ts-3
Don't bend shot pipes.
Hours since sleep set
Temp.
0
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P23 OF 46
1/2
1
2
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P24 OF 46
UNIT OPERATION
* Fill the gap between the wall hole and wall sleeve with putty to keep from rain or dust entering inside.
"SLEEP" BUTTON: This function will increase or
decrease the set temp depending on what mode the
unit is running in. When SLEEP mode is turned on in
cooling mode the temp will automatically increase
0.5 to 1.0 degree once every half to one hour for
several times over a period of 2 hours and remain at
that temperature until SLEEP mode is turned off.
When SLEEP mode is turned on in heating mode the
set temp will automatically decrease 0.5 to 1.0
degree once every half to one hour for several times
over a period of 2 hours and remain at that
temperature until SLEEP mode is turned off. This way
when the unit is SLEEP mode during cooling the fan
will blow at a lower speed to accommodate for the
decreased cooling load due to less activity and a
lower outdoor temp. The same principle of savings is
applied to heat mode.
To activate the sleep mode press the SLEEP button
once. You will see a picture of a moon and stars in
the lower left hand corner. To turn off the SLEEP
mode simply press the button once more and the
moon and stars will disappear from the remote screen.
REMOTE CONTROL-BUTTON NAME & FUNCTIONS
"FAN" BUTTON: By pressing this button you can
select from fan speeds AUTO→Low→Middle→High.
When the unit is first powered on the default fan
speed setting is AUTO. When running the unit in
DRY mode the fan speed will only run in low speed.
AUTO
High fan
High fan
High fan
Note: Under the Dry mode, the fan speed isn't
adjustable, low fan speed is imperative.
REMOTE CONTROL-BUTTON NAME & FUNCTIONS
"CLOCK" BUTTON: The time function runs on a 24
hour clock. To set the time press the clock button
once. You will see a flashing clock appear on the
remote. Press the "+" button to increase the time;
press the "-" button to decrease the time until the
desired time is set. Press the clock button once more
to set the time. You will notice then, the clock symbol
is not flashing.
"LIGHT" BUTTON: This allows you to turn the indoor
unit display light on and off. If the light emitted by the
display is bothersome simply press the LIGHT button
on the remote and the display will turn off. To turn the
display back on simply press the light button once
more.
"BLOW" BUTTON: When the blow function is on a symbol on the remote will appear next to left hand corner of
the temp. This feature when turned on, will allow the indoor fan to continue to blow even when the unit is turned
off by the remote. This will aid in the quick drying of the indoor coil to help prevent any kind of mold build up due
to moisture. To turn this feature off simply press the BLOW button once more till you notice the blow icon
disappear from the remote display.
"TURBO" BUTTON: When you press this button you will see a symbol of a fan appear on the remote. In either
heat or cooling mode when this button is pushed the compressor and or fan will blow at a higher speed to
achieve set temp quicker. When the indoor unit senses that the set temp is being approached the fan speed will
slow down. To turn this function off simply press the TURBO button until the fan symbol is no longer displayed on
the remote.
"-" Button: By pressing this button the set temp will decrease. If this button is pushed without releasing for over
2 seconds the temperature will decrease more rapidly. In AUTO mode the temperature cannot be changed. The
temperature range for this remote is 61OF to 86OF.
"TEMP" Button: When the unit is first turned on the remote will display the last set temp. When the TEMP button
is pushed twice the indoor unit will display the room temp for approximately 5 seconds before going back to the
set temp.
TO LOCK THE REMOTE: If you would like to lock the remote from anyone changing the settings simply press
the "+" and the "-" buttons simultaneously. When the remote is locked you will see an icon of a lock appear on the
remote. If while the remote is locked and someone pushes a button on the remote they will see the icon of the
remote flash three times. This indicates the remote is locked. To unlock the remote simply press the "-" and the
"+" once more. You will know the remote is unlocked once the icon of the lock disappears from the remote screen.
SWITCH BETWEEN FO AND CO: The remote default is Fahrenheit. If you would like to switch between the remote
displaying Fahrenheit and Celsius the MODE and the "-" button simultaneously while the unit is 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 24
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 and the word ON will stop blinking and stay
on the remote. The time you would like the unit to turn on is now set.
"TIMER OFF" BUTTON: This allows you to set the time that you would like the unit to shut off. Simply follow the
above steps but this time press the TIMER OFF button instead of the TIMER ON button. When the word OFF is
set on the remote screen, the time you would like the unit to turn off is now set.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P25 OF 46
"U-Touch" Feature Is Activated:
"U-Touch" Feature Is NOT Activated:
Roof
Warmer
Warm air rises
Colder
Cold air drops
Roof
T+△
Temp sensor
Signal (communication)
Wall mount indoor unit
H2
T
(May Feel Colder than
You Want in Summer
and Winter)
T
H1
Floor
T
Remete control
(Temp sensor)
H1
Floor
(Feel More
Comfortable)
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P26 OF 46
UNIT OPERATION
UNIT OPERATION
"+" Button: By pressing this button the set temp will increase. If this button is pushed without releasing for over
2 seconds the temperature will increase more rapidly. In AUTO mode the temperature cannot be changed. The
temperature range for this remote is 61OF to 86OF.
"SWING" BUTTON: Hold the swing button (symbol
"SWING UP AND DOWN" BUTTON
shown above) for more than 2 seconds and the
Press this button, to set up swing angle, which
indoor air louver will start to swing between the
circularly changes as below:
highest and lowest limits. Once the swing button is
released the louver will stay in the last position where
the button was released.
If the swing button is pushed just once the swing icon
will appear on the remote and the louver will swing
This is an universal use remote control. If remote
up and down continuously between the highest and
control sends the following three kinds of status
lowest points. Push the swing button once more and
that the swing status of main unit will be:
the icon will disappear on the remote and the louver
will remain at the last point the button was pushed.
When the guide louver start to swing up and down, if
When the unit is powered off by the remote the louver
turn off the Swing, the air guide louver will stop at
will close on the indoor unit.
current position.
Press this button to set up the desired swing angle
which circularly changes as below. (Insert swing
which indicates the guide louver swings up and
picture)
down between that all five positions.
"U-TOUCH" BUTTON: Since the indoor unit is normally mounted high up on the wall or attached to the ceiling, the
temperature at where the return air sensor is installed inside the indoor unit is higher than what it is where the
area people stand and can feel (4 to 7 feet above the floor). If the unit uses the return air temperature as its
target control, people may feel colder than what they really want (target) in both cooling mode and heating mode.
The facts of air stratification and warm air rising and cold air dropping require users to set up, by experiments or
experience, the target temperature quite few degrees higher than what you really want , in order to reach a
satisfied or more precise indoor comfort. This is a common drawback of AC/HP units made by other manufacturers.
With YMGI's U-touch feature, this can be avoided and your comfort level can be improved.
When you press the U-TOUCH button on the remote control, the unit will use the temperature where the remote
is located as its target temperature control. Once you do so, you will notice a figure of a person surrounded by
stars appear on the remote.
Once the U-TOUCH stars appear, the remote will send a signal of the remote-local temperature to the indoor unit,
and this remote-local temperature will supersede the return air temperature as the unit's target temperature.
Every 10 minutes such signal will be sent from the remote to the indoor unit updating the remote-local
temperature. If at any time during this process no signal is received by the indoor unit from the remote, the unit
will switch back to the previously set temperature before the U-TOUCH feature is activated. To turn the UTOUCH feature off, simply press the U-TOUCH button until you see the symbol disappear from the remote
screen. By doing so, the return air temperature will take 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.
OPERATION OF REMOTE CONTROL
REMOTE CONTROL-BUTTON NAME & FUNCTIONS
SYMBOL DISPLAY
When power is first applied to the unit but the power has not been turned on by the remote control, then the red
power light only is displayed. When the unit has been powered on by the remote control then the running LED is
lit and the current running mode symbol is displayed at the same time.
③
①
④
COOLING: Running symbol and cooling symbol are lit.
HEATING: Running lamp and heating symbol are lit.
②
⑤
DRY: Running lamp and dry lamp are lit
④
①
FAN: Running lamp and fan lamp are lit.
②
③
AUTO: Auto lamp, running lamp and actual running mode are lit.
ALPHA NUMERIC DISPLAY
* The setting temperature range for the unit is 61O to 86OF.
* Under AUTO mode unit will display 77OF for cooling and 68OF for heating modes.
UNIT DEFROSTING CYCLE
While the unit is running in HEAT mode during colder weather, frost can build up on the outdoor coil. This is
common on all heat pump units made by all manufactures. If the unit is running and the automatic defrost mode
is enacted the indoor unit will stop running and display an H1 code. Once the defrost cycle is finished and the
outdoor coil is defrosted the indoor unit will start to run again in the mode that it was last set up for.
INTRODUCTION FOR SPECIAL FUNCTION
About blow function
This function indicates that there is moisture on the evaporator of the indoor unit will be blowed after the unit has
stopped to avoid mold.
1) Having set blow function on: After turning off the unit by pressing ON/OFF button indoor fan will continue
running for about 10 min. at low speed. In this period, press blow button to stop indoor fan directly.
2) Having set blow function off: After turning off the unit by pressing ON/OFF button, the complete unit will be off
directly.
About AUTO RUN
* About turbo function
At the start of this function, the unit will blow at super high speed to cool or heat quickly so that the room temp.
approaches the preset temp. as soon as possible.
* About lock
Press +and - buttons simultaneously to lock or unlock the keyboard. If the remote controller is locked, the icon
will be displayed on it, in which case, press any button, the mark will flicker for three times. If the keyboard
is unlocked, the mark will disappear.
* About swing up and down
1) Press swing up and down button continuously more than 2s,the main unit will swing back and forth from up
to down, and then loosen the button, the unit will stop swinging and present position of guide louver will be
kept immediately.
2) Under swing up and down mode, when the status is switched from off to , if press this button again 2s later,
status will switch to off status directly; if press this button again within 2s,the change of swing status will
also depend on the circulation sequence stated above.
If at any time you would like the send the unit into the defrost cycle, you can choose to by turning the remote
controller off and pressing the BLOW and the MODE buttons simultaneously. You will see the symbol of HI
appear on the remote. To stop the defrost cycle simply press the BLOW and MODE buttons again and the H1
will disappear from the remote screen.
CHANGING BATTERIES AND NOTICES
1) Press slightly along the arrowhead direction to push the back cover open on remote control.
2) Take out the old batteries. (As show in figure)
3) Insert two new AAA1.5V dry batteries, and pay attention to the polarity. (As show in figure)
4) Attach the back cover of wireless remote control. (As show in figure)
NOTE:
UNIT OPERATION
UNIT OPERATION
When AUTO RUN mode is selected, the setting temperature will not be displayed on the LCD, the unit will be in
accordance with the room temp. automatically to select the suitable running method and to make ambient
comfortable.
ON DEMAND DEFROSTING
When changing the batteries, do not use the old or
different batteries, otherwise, it can cause the
malfunction of the wireless remote control.
If the wireless remote control will not be used for and
extended period of time, it is recommended to leave
the batteries out as this could cause leakage from the
batteries. This will damage the remote control.
Sketch map for
changing batteries
The operation should be in its receiving range.
It should be placed at where is 1m away from the TV set or stereo sound sets.
If the wireless remote control can not operate normally, please take them out, after 30s later and reinsert, if they
cannot normally run, please change them.
ABOUT MODE CLASH/CONFLICT BETWEEN INDOOR UNITS
If any two indoor units are controlled to run the following modes, indoor unit will run into mode clash or
conflict. All indoor units will stop to run and show Protection/Error code E7, unless shut-off and then
re-power:
Some on HEAT Mode, while others on COOL Mode and/or DRY(Dehumidify) Mode and/or FAN Mode.
NOTE:
COOL mode is compatible with DRY and FAN mode. In other words, there will be no problem for some
indoor units to run COOL, while others may run either one or few of modes COOL, DRY (Dehumidifying)
and FAN. No Protection/Error code will show up.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P27 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P28 OF 46
OPERATION AT EMERGENCY
CLEAN AND CARE
If at any time the remote control becomes damaged or lost you can switch to the manual mode on the indoor unit.
This will allow the unit to run in AUTO mode only. While in AUTO mode the unit temperature cannot be switched.
Contact your local service provider for instructions on replacing the remote control.
CLEANING THE AIR FILTERS (RECOMMENDED ONCE EVERY THREE
MONTHS)
The manual switch can be operated as follow:
* At operation: When the unit has stopped running, press ON/OFF button, unit
will enter into AUTO RUN mode. The microcomputer will accord to the room
temperature to select the (COOL, HEAT, FAN) mode automatically, to obtain
the comfortable effect.
* At stopping: When the unit is running, press the ON/OFF button of the manual
switch, the unit will stop work.
Note: If the unit is in a dusty area, the air filters should be cleaned more often. After taking off the filter, be sure
not to touch the fin on the indoor unit as this will cause injury.
AUTO/STOP
Manual Switch
The code switch can be operated as follow:
* At operation: When the unit is stopped running, adjust the code switch to AUTO,
the unit will enter into AUTO RUN mode. The microcomputer will accord to the
room temperature to select the (COOL, HEAT, FAN) mode automatically, to
obtain the comfortable effect.
* At stopping: When the unit is running, adjusts the code switch to STOP position,
the unit will stop working.
AUTO
TEST
RUN
STOP
Code Switch
CLEAN AND CARE
* Turn power off and pull out the power plug before cleaning air conditioner. Or it may cause electric shock.
* Never sprinkle water on the indoor unit for cleaning because it can cause an electric shock.
* Volatile liquid (e.g. thinner or gasoline) will damage the air conditioner. (So wipe the units with a dry soft cloth,
or a cloth slightly moistened with water or cleanser.)
To Remove the Air Filter
By holding onto the bottom slot of the air filter slightly push the filter in an upward motion at a slight angle and pull
downward carefully.
Cleaning
To clean the dust adhering to the filters, you can either use a vacuum cleaner, or wash them with warm water.
the neutral detergent water should be below 113OF when the filters are very dirty and dry in the shade.When the
filters are very dirty (such as oil stain), and dry it in the shade.
Take off the front panel
Along the direction of arrows to lift the front panel up,
meanwhile to hold both slots of the front panel and
take it out forcibly and then can take it off.
Washing
Clean with a soft brush, water and neutral detergent
and then dry it.(Note: Before cleaning the unit, please
take down the displayed box firstly, then to wash the
panel, if the unit has displayed on the front panel.
Never use the water above 113OF to wash the panel,
or it could cause deformation or discoloration.)
Install front panel
Place two supporters of the front panel into the slots,
along the direction of arrows to cover and clasp the
front panel. As show in right figure.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P29 OF 46
NOTE: Never use water hotter than 113OF to wash the unit or the filters as this can discoloration and/or deform
the unit. Never dry the filters by fire as this can be dangerous. Always air dry the filters.
Reinsert the filters
Reinsert the filters along with the arrow head, then cover the surface panel and clasp it.
CHECKING BEFORE SEASON COMES:
1) If the unit is still connected to the correct electric power V/Ph/Hz.
2) If the unit is still securely fastened..
3) If the batteries of remote control are good.
4) If the filter is loaded and clean
5) If the intake and discharge vents are clear from any obstruction.
MAINTENANCE AFTER USING
1) Turn main power off, by disconnecting electrical power disconnect switch.
2) Clean filter and unit.
3) Cover unit to keep from dust or moisture.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P30 OF 46
UNIT OPERATION
UNIT OPERATION
CLEAN THE FRONT PANEL(MAKE SURE TO TAKE IT OFF BEFORE
CLEANING)
PROTECTION AND ERROR CODES
Protection and Error Code Names
CHECKING UNITS PRIOR TO CONTACTING YOUR TECHNICIAN
Dual-8 Display Running Lamp Heating Lamp Cooling Lamp
System abnormal (anti-high temp, power off, cooling overload)
H4
Blink 4 times
Compressor overload protection
H3
Blink 3 times
Module protection
H5
High-pressure protection
E1
Blink once
Anti-freeze protection power-off
E2
Blink twice
E4
Blink 4 times
Low voltage over-current protection
E5
Blink 5 times
Mode clash
E7
Blink 7 times
Communication malfunction
E6
Blink 6 times
Defrost or heating oil return
H1
Indoor ambient temp sensor open, short circuit
F1
F2
Blink twice
F3
Blink 3 times
Outdoor unit temp sensor open
F4
Blink 4 times
Outdoor unit discharge temp sensor open
F5
Fail to start up
H7
Blink 7 times
PFC malfunction
HC
Blink 6 times
Compressor demagnification protection
HE
Blink 14 times
F6
Blink 6 times
Unit overflow down frequency
F8
Blink 8 times
Heat anti high temp down frequency
H0
Anti cool air protection
E9
Cooling oil return
F7
Mist is blown out of unit.
Normally it happens during cooling start period, when indoor
air is hot and humid.
Hearing creaking noise during unit starting or shutting off.
Normally this is caused by the expansion or contraction at
components due to the temperature changes.
The unit doesn't operate at all.
1) Is power shut off or lost?
Blink 5 times
Cooling overload down frequency
F9
Normally this is due to refrigerant flowing through coils.
Blink once
Indoor unit temp sensor open, short circuit
E0
Hearing sound of "water flow" inside unit.
Blink once
Outdoor ambient temp sensor open, short circuit
Compressor discharge down frequency
Normal or Abnormal
Blink 5 times
Discharge temperature protection
Unit AC voltage decreasing down frequency
Phenomenon
Blink 9 times
Blink 10 times
Blink 10 times
Blink 9 times
Blink 7 times
2) Is TIMER set up?
3) Is circuit breaker not engaged, or even trips?
4) Is fuse not connected, or even blown?
CHECKING UNITS PRIOR TO CONTACTING YOUR TECHNICIAN
5) Is voltage too high or low?
6) Is the flow control or other switches breaking the circuit?
7) Is unit under 3-minute restarting protection period?
UNIT MAINTENANCE &
SERVICE GUIDE
UNIT MAINTENANCE &
SERVICE GUIDE
8) Is the remote control our of battery power?
Do not repair the air conditioner at your discretion. Incorrect repair may cause electric shock or fire, so please
contact authorized service center for professional repair.
Unit doesn't respond to remote control.
1) Is the remote control our of battery power?
2) Is remote control pointing to sunshine or lighting?
3) Is remote control signal blocked?
Following checks prior to contact may save your time and costs.
4) Is remote control too far away from indoor unit?
Phenomenon
The unit doesn't deliver cooling or heating, immediately after the
unit is restarted (remote control or power resuming).
Normal or Abnormal
5) Is the fuse on indoor unit blown?
If unit is powered off, and then restored, it will not run the
compressor until 3 minutes later. This is normal 3-minutes
restarting protection against high internal refrigerant pressure.
6) Is the indoor unit powered on?
7) Is the indoor unit transformer good?
8) Is the indoor unit control board good?
Cooling (heating) is not powerful.
1) Is the set temperature too high or too low?
2) Is filter dirty?
The unit emits a smell.
For new unit, some of the smell is normal.
For any bad or abnormal smell, need to shut off the unit and
check around. May need to call your technician.
3) Is air vent blocked?
4) Is unit undersized?
5) Is window or door closed?
6) Is unit refrigerant at lower level?
7) Is outdoor too hot or cold?
8) Is fan speed set at low?
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P31 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P32 OF 46
CHECKING UNITS PRIOR TO CONTACTING YOUR TECHNICIAN
Phenomenon
EXPLOSIVE VIEW AND SPARE PARTS LIST
WMMS-09EW-V2B(59)(2)
Normal or Abnormal
Indoor unit doesn't blow air.
1) Is the unit in 3-minutes restarting protection period?
2) In heating mode, the indoor fan motor will not rotate before the
indoor coil is hot enough. This is a normal anti-cold air blowing
function.
3) Is the outdoor unit defrosting?
4) Is the unit in fan-pausing period of dehumidification mode?
5) Is the filter dirty?
6) Is the fan motor setting screw loose?
7) Is the fan capacitor bad?
8) Is the fan motor bad?
Condensate forms at air discharge louver.
This is normal when the conditioned cool air is mixed with the
warm/hot and humid indoor air. Condensate may go away
gradually once the indoor air is dehumidified and cooled down.
Water drips out of indoor unit.
1) Is indoor air too warm and humid?
2) Is condensate drain hose/connection leaking?
3) Is condensate drain hose clogged or restricted?
4) Is condensate drain hose insulated?
5) Is the 3" hole at exterior wall staffed or sealed?
Noise is heard at indoor unit.
1) Is the fan motor or compressor relay energized?
2) Is it due to temperature change that causes part expansion
or contraction?
UNIT MAINTENANCE &
SERVICE GUIDE
UNIT MAINTENANCE &
SERVICE GUIDE
Must stop all unit operations, disconnect power and contact your service technician, in the
following situations:
1) Harsh sound is heard;
2) Bad odor is smelt;
3) Water is leaked out of indoor unit;
4) Circuit breaker trips or fuse is blown few times;
5) Wires or connections are very hot;
6) Oil or refrigerant leakage is found;
7) Unit vibrates abnormally;
8) Other abnormal situations.
NOTE: The above is for illustration purpose. Please check against actual unit or YMGI technical support for
confirmation of exact part model / code.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P33 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P34 OF 46
EXPLOSIVE VIEW AND SPARE PARTS LIST
EXPLOSIVE VIEW AND SPARE PARTS LIST
WMMS-09EW-V2B(59)(2)
WMMS-12EW-V2B(59)(2)
No
Description
Part Code
Qty
1
Wall-mounting frame
01252220
1
2
Rear case
222020016
1
3
Evaporator assy
010020534
1
4
Cross flow fan
10352001
1
5
Ring of bearing
76512203
1
6
/
/
/
7
Drainage pipe
0523001401
1
8
Water tray
201820270
1
9
Swing louver
10512088
12
10
Swing linkage 1
10582002
1
11
Swing linkage 2
10582003
1
12
Front case
200022107
1
13
Front panel
200022092C
1
14
Decorate piece
68012019
1
15
Remote control YT1F
30510049
1
16
Filter
111200511
2
17
Receiver board D5K3
30545041
1
18
Screw cover
242520062
3
19
Guide louver 1
105120332
1
20
Guide louver 2
105120342
1
21
Motor MP28VB
15012086
1
22
Motor clamp
26112014
1
23
Motor FN14P-PG
150120763
1
24
Electric box cover
20122082
1
25
Covering plate
20112058
1
Terminal board T4B3A
42011233
1
Electric box
20112057
1
28
Main PCB MB803F2AJ
30038004
1
29
Room sensor 15K
390000451
1
3900019814
1
3900019815
1
30
Tube sensor 20K
3900019816
1
31
Jumping connector
4202300102
1
32
Transformer 48X26P
43110293
1
33
Wire clamp
71010103
1
34
Rear clamp
24242001
1
35
Connecting cable
/
1
36
swing louver clamp
10582409
1
37
swing louver
10582408
1
38
swing louver(up)
10542004
1
39
swing louver(down)
10542005
1
UNIT MAINTENANCE &
SERVICE GUIDE
UNIT MAINTENANCE &
SERVICE GUIDE
26
27
Note: The above data are subject to change without prior notice.
NOTE: The above is for illustration purpose. Please check against actual unit or YMGI technical support for
confirmation of exact part model / code.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P35 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P36 OF 46
EXPLOSIVE VIEW AND SPARE PARTS LIST
EXPLOSIVE VIEW AND SPARE PARTS LIST
WMMS-12EW-V2B(59)2
WMMS-18EW-V2B(59)2
No
Description
Part Code
Qty
1
Wall-mounting frame
01252384
1
2
Rear case
222020503
1
3
Evaporator assy
01002250
1
4
Cross flow fan
10352005
1
5
Ring of bearing
76712015
1
6
\
\
\
7
Drainage pipe
0523001401
1
8
Water tray
201820306
1
9
Swing louver
105120413
12
10
Swing linkage
105824397
1
11
Front case
200022958
1
12
Screw cover
242520072
3
13
Filter
11122440
2
14
Remote control YT1F
30510049
1
15
Decorate piece
68012019
1
16
Receiver board
30545042
1
17
Front panel
200022921
1
18
Guide louver
261120432
1
19
Guide louver
261120422
1
20
Motor MP28EC
15212002
1
21
\
\
\
22
\
\
\
23
Right motor clamp
26112429
1
24
Bearing holder
26152423
1
25
Motor FN20M-PG
150120873
1
Electric box cover
20122081
1
Terminal board T4B3A
42011233
1
28
Covering plate
20112060
1
29
Electric box
20112059
1
30
Main PCB M803F2AJ
30038004
1
31
Transformer 48X26P
43110293
1
32
Wire clamp
71010003
1
33
Rear clamp
26112430
1
34
Connecting cable
400204056
1
35
\
\
\
36
Room sensor 15K
390000451
1
3900019814
1
3900019815
1
3900019816
1
37
Tube sensor 20K
UNIT MAINTENANCE &
SERVICE GUIDE
UNIT MAINTENANCE &
SERVICE GUIDE
26
27
NOTE: The above is for illustration purpose. Please check against actual unit or YMGI technical support for
confirmation of exact part model / code.
The above data are subject to change without prior notice.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P37 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P38 OF 46
EXPLOSIVE VIEW AND SPARE PARTS LIST
CUSTOMER AND TECHNICIAN MUST READ
WMMS-18EW-V2B(59)2
WHY DOES YMGI GROUP REQUIRE INSTALLATION AND SERVICE TO BE
100% PERFORMED BY LICENSED OR CERTIFIED HVAC TECHNICIAN/
CONTRACTOR?
UNIT MAINTENANCE &
SERVICE GUIDE
No
Description
Part Code
Qty
1
Wall-mounting frame
01252004
1
2
Rear case
22202329
1
3
Fan bearing
76512203
1
4
Screw cover
24252015
3
5
Swing louverb
105120472
11
6
Swing link 1
10582057
1
7
Swing link 2
10582058
1
or certified contractor, they have the training and experience to correct the problem more efficiently. A
8
Water tray
20182057
1
technician(s) may be unwilling to repair an issue on a unit that they did not install. If you do find a technician
9
Guide louver(up)
10512085
1
willing to perform the service, there is an increased possibility of higher service fees than normal, increased
10
Guide louver(down)
10512086
1
service visits, or delayed service from that technician.
11
Cross flow fan
10352022
1
12
Evaporator assy
01002913
1
13
Drainage pipe
05230014
1
14
Evaporator support
24212067
1
15
Filter
11122048
2
16
Front case
200026524
1
17
Front panel
2000284402
1
SUGGESTIONS, TO AID YOU IN HIRING AN HVAC CONTRACTOR:
18
Remote control YT1F
30510049
1
1) Hire a currently, practicing, licensed/ certified HVAC technician/ contractor. Technicians, who are no longer
19
Displaying light board
22432071
1
practicing (retired, etc.) in this field, may not have the updated knowledge or may lack experience on the
20
Electric box cover 1
20112019
1
equipment you have purchased.
21
Wire clamp
71010103
1
2) Hire a technician/ contractor who services customers in your local area and you are familiar with. Local
22
Terminal board
4201026601
1
contractors have a faster response time and will be easier for you to determine if they are reputable.
23
Electric box cover
20112020
1
24
Main PCB
30038022
1
25
Transformer 57X25F
43110257
1
26
Room sensor 15k
390001912
1
3900019814
1
3900019815
1
5) Some contractors/ technicians may not feel comfortable about installing the equipment that you purchased for
3900019816
1
them to install, and they prefer to purchase and install the equipment. You can contact YMGI directly to check
3
and see if there have been any contractors in your area who have installed our products or similar.
27
Tube sensor 20K
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
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.
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.
28
Sensor insert
42020063
29
Electric box
20112018
1
30
Lower shield of electric box
01592037
1
31
Upper shield of electric box
01592038
1
32
Stepping botor MP35XX
15213001
1
33
Motor clamp
26112095
1
knowledge and experience, a full single head installation may normally cost anywhere from $800 to
34
Helicoid tongue
26252009
1
$1500. These costs are estimates and your actual costs may differ due to job nature and location.
35
Motor FN20K-PG
15012718
1
8) Number of hours can vary depending upon each individual situation, some factors are, but not limited to:
36
Pipe clamp
24242001
1
9) How difficult or complex the indoor unit is to be securely installed.
37
Connecting cable
/
1
10) How difficult or how long the inter-connecting pipes and wires are to be installed.
38
Plank cable
4003004201
1
39
Jumping connector
4202300106
1
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
MUST READ-2
The above data are subject to change without prior notice.
Note: Please refer to other materials or contact YMGI should you need similar information of other models.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P39 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P40 OF 46
CUSTOMER AND TECHNICIAN MUST READ
CUSTOMER AND TECHNICIAN MUST READ
11) If all the suggestions have been taken and all the necessary steps are followed.
12) If the contractor(s)/technician(s) are experienced with the systems/brands you purchase.
You might spend less. But remember, many times you get what you pay for.
13) Sign a contract with them. The contract should list all the detailed work they will conduct and the standards
they will follow. Some contractors are willing 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 paying the contractor in full.
The cost of not having your unit installed properly can be more expensive than spending a little extra money
that hiring the right contractor will cost. Protect your investment and warranty eligibility by doing it right first time.
Some DIY installations have been successful, but these are 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 indoor and outdoor units correctly and properly.
* Vacuuming the inter-connecting refrigerant lines.
* Checking and/or fixing the refrigerant leaks.
* Checking and/or fixing the condensate drain leaks.
* Releasing the refrigerant from outdoor unit to indoor unit.
* Running the unit to check all the unit functions.
* Conducting the installation or trouble-shooting with correct tools, experience or professional knowledge to
correct the problem.
UPON PURCHASING, OPENING PACKING BOXES AND INSTALLATION OF
YMGI UNITS/ACCESSORIES, YOU AND TECHNICIANS YOU HIRE TO
INSTALL THEM ARE ASSUMED TO HAVE READ ALL MATERIALS AND
AGREE TO FOLLOW AND BE BONDED BY ALL WE SAY IN YMGI MANUALS.
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.
Does YMGI allow to do-it-yourself installations (DIY) partially or fully? NO.
Unfortunately no brand or manufacturer can take the responsibility of the equipment if it is not professionally
installed by a currently licensed HVAC technician/ contractor.
If unit is installed by non-licensed people, in part or fully, will the factory warranty be void? YES.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P41 OF 46
* Freight (package/unit) shall be checked thoroughly for damage at receiving before accepting by signing on the
carrier's delivery paperwork.
* Upon shipment being signed for acceptance, it becomes a binding document as to the condition of the products
on delivery. We cannot process any shipping damage claim, if you accept the delivery.
* If damage is found at delivery, both you and the delivery driver must make notes on the delivery receipt or other
freight paperwork detailing the damage found by marking position/parts on unit, description of damage, time/
date, your name, contact phone, etc. on the delivery documents. Make a copy of the marked delivery receipt.
* If the damage is minor or partial, that you choose to accept, you can contact the distributor or YMGI to discuss
the possible replacement of the damaged part.
* If refusal of the shipment is needed due to severe freight damage, DO NOT sign the carrier's delivery receipt
document indicating that you accept the products. Mark receipt "REFUSED DUE TO FREIGHT DAMAGE."
Sign and date along with the delivery driver's signature and date.
* Take pictures showing the damage, before the delivery driver leaves.
* If you accept the delivery or fail to note damage on the driver's delivery receipt, the ability to claim freight
damage is lost and YMGI will not replace the unit on this basis.
* Contact the distributor or YMGI, report the damage by forwarding the marked delivery receipt copy and pictures.
* Only after YMGI verifies with the carrier the necessary detailed notes of received freight damage, will the
damaged products be eligible for replacement.
* If the returned products are found not damaged, YMGI will treat it as a return and will charge you 25% of
product value plus added shipping cost.
RETURN-YMGI GROUP POLICIES & RETURN GOODS AUTHORIZATION (RGA)
All sales are final. If the customer wishes to return a product, the following Return Policies apply.
A. Only those products (units, parts or accessories) under the following conditions, are eligible for return:
1) Products are returned within 30 days of their original shipment date from YMGI
2) Products have not been installed.
3) No damage exists on the products being returned.
4) No missing products.
5) Products and packages are clean.
6) No duct tape or marking on the product or box.
7) Products are still their original package, in good shape and in re-sellable condition, as YMGI determines.
B. Preapproval steps for your return request:
1) Contact your distributor or YMGI to request a return.
2) Photograph your product and box to show details
3) YMGI will review your request, along with the pictures and any other details pertaining to your request.
4) If YMGI agrees to process your return request, a form called Return Goods Authorization (RGA), along with
an assigned RGA # will be forwarded to your distributor or you.
5) Any return without YMGI Group approved RGA #, will not be accepted.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P42 OF 46
MUST READ-2
MUST READ-2
QUESTIONS ABOUT SELF-INSTALLATION VS HIRING LICENSED HVAC
TECHNICIANS
RECEIVING AND FREIGHT DAMAGE
CUSTOMER AND TECHNICIAN MUST READ
CUSTOMER AND TECHNICIAN MUST READ
C. YMGI must verify the following before you can pack your products:
1) No products (units, parts, accessories) are missing.
2) No damage is found.
3) The products are in the original packaging.
4) No duct tape on any product or box.
5) Pictures have been taken and sent to YMGI to verify the product and boxes are not damaged.
6) The RGA has been completed and a copy has been returned to YMGI, via email or fax.
7) YMGI has approved the request in writing.
DEFECTIVE UNITS / PARTS / ACCESSORIES-REPAIR OR REPLACEMENT
D. Shipping Preparation:
1) Package all products in a manner in which no damage can occur to the product and secure to a pallet.
2) Take and forward pictures of packed pallets for YMGI to verify proper packaging and no existing damage.
3) Include the YMGI approved RGA# in the shipping documents.
4) YMGI reserves the right to approve or deny any shipments.
5) YMGI can arrange shipping for you, but not at YMGI's cost. If this option is chosen, a packing list and BOL will
be issued to you through YMGI.
6) If the above option is not chosen, you will be responsible for all freight charges. YMGI will not accept any
returned items COD.
7) Place the package in an area which is accessible to the shipping company for pickup and limits the possibility
of damage to the product. Customer must be present at the time of freight pick up.
After shipping, fax the BOL to YMGI Group at 1-866-377-3355 or email to customerservice@ymgigroup.com,
detailing the information of the freight company and their tracking number.
E.Freight Damage:
1) YMGI Group will inspect returned items
2) Claiming of freight damage from a customer hired carrier will be the customer's responsibility.
3) Claiming of freight damage from a YMGI hired carrier will be YMGI's responsibility.
F. Charges for your return:
1)A restocking charge of 25% creditable invoice value.
2)All return shipping fees.
3)Additional fees will be charged, if products are found to be damaged, missing or used.
4)YMGI will notify the distributor of the charges only after the inspection and assessment of the returned products
has been completed.
Attention:
1) Returned products must be shipped within 7 days of YMGI's releasing of RGA #.
2) All RGA shipping shall be prepaid by the customer. YMGI will not accept any COD freight.
YMGI GROUP DISCLAIMING-2:
* YMGI Group will not be responsible for any losses of returned unit(s)/part(s)/accessories in transition to YMGI
Group warehouse.
* YMGI Group RGA is valid for seven (7) days from the original issuing date. Returns will not be accepted, if
shipping is made 8 or more days after the YMGI Group RGA is issued.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P43 OF 46
* Your technician calls our technical support line, from your job site, after checking your units and getting all the information
ready.
* Our technical support will go through several steps, over the phone or through email, with your technician, in order to help
identify and resolve the problems. Normally wiring correction, piping correction, part repair/ replacement will resolve the
problems.
* Your technician will then need to verify and confirm the problem(s) before YMGI can ship out the replacement part(s).
Inaccurate or incomplete troubleshooting or part replacement will delay the repair. YMGI technical support will only speak
with a licensed/certified technician in regards to the repair of your unit. In our experience this saves time and money for
all parties involved.
Your technician is the only person to perform any physical checking, trouble-shooting and replacing of any
defective part(s) for your units. Our factory technical support is just a help. YMGI provides no labor warranty
on the products.
2. Unit/part repair at our workshop(s): Due to the limitations of our technical support not being at your job site,
or your technician's limited experience with our product, the problem may not be resolved as quickly as would
be desired. If the problem is still not resolved after attempts between your technician and our technical support,
you can elect to have the unit repaired at our facility. If this step is chosen:
1) YMGI will send to you the 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 to the YMGI Group.
3) Once the form has been completed and sent back to YMGI, remove the units and ship back to YMGI.
Please make a note describing the problem and communication history, if possible. Our technicians will check the
units and find the problem(s), repair the issue(s), and ship the unit back to you following the conditions set forth in
the signed repair agreement. All unit removal and re-installation is done at your cost and must be done by a
currently valid licensed HVAC technician.
3. Unit replacement: Only applies to those defects reported within 30 days of original purchase date and if all
necessary warranty paperwork had been received and approved. This option applies only if the above steps
cannot resolve the problem(s). Either indoor or outdoor unit replacement is available, based on the actual need,
at YMGI's determination. This option shall be the last resort, due to refrigerant and wiring considerations. All
unit removal, re-installation and shipping cost are the responsibility of the customer. YMGI maintains the final
authority as to unit replacement. Replacement will be made with the same model only. Alternate units will be
treated as a new order.
Returning Replaced Defective Units/Parts/Accessories After Unit Repair: (Only applies to steps 1&3 above)
1) Repack the replaced unit/ part /accessory in the box which contained the replacement part.
2) Parts can be boxed for UPS, FedEx or equivalent ground service. Units shall be secured onto the skid on which the
replacement was shipped after placing into the package from the replacement product.
3) Ship all replaced products, to YMGI-designated location. You will be charged if YMGI does not receive the replaced parts.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P44 OF 46
MUST READ-2
MUST READ-2
YMGI GROUP DISCLAIMING-1:
YMGI Group will NOT accept any return, or may not honor 100% credit for any return of Product(s)/Part(s)/
Accessories, in any of the following cases:
* Return requests made 30 or more days after the date of original sales shipping from YMGI Group warehouse.
* Return shipment is initiated 8 days or more after the RGA is approved.
* Returned products received not displaying an YMGI-approved valid RGA #.
* Returned products received C.O.D.
* Returned products not received in the original packaging.
* Returned products received with non-repairable packaging, including duct tape or marks on units or carton
boxes.
* Returned products received with missing units/parts/accessories.
* Returned products received, are found to be non-functional or damaged.
Out of thousands of units sold every year, there may be an occasional instance your product does not operate
properly. Reasons of but are not limited to: manufacturing, installation, operation, maintenance and
knowledge of operator.
Equipment failure does not automatically denote a product defect from the factory assembly line. The defects can
be caused, during production, transportation, installation, operation, maintenance, or service. Defects may NOT
be the responsibility of the manufacturer. Nobody willfully or intentionally produces a defective product. No
determination shall be made until the technical issue(s) or the causes of the defect(s) are identified.
The defects might be found before/ during installation or in the operation of the unit. Defects can be in the form
of blown fuse(s), defective control board(s), damaged remote control, loose or missing screws, etc. These
defective parts can be replaced easily.
Some functions of our units are 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.
If a defect is found, whether at the original installation, or during normal operation, we will gladly help you in the
following steps in sequence from 1 to 3:
1. Part repair or replacement after trouble-shooting: This is the most common and generally the easiest and
most economical way for all the needed parts since the problem and all part needs can be accurately and
completely identified.
CUSTOMER AND TECHNICIAN MUST READ
USER NOTES AND INSTALLATION/SERVICE/MAINTENANCE NOTES
Standard factory warranty does not cover the cost of materials and labor that are incurred at your site.
USER NOTES
There will be no cost for the replacement unit, if YMGI determines the defect is manufacturer related.
Put down whatever questions you have or problems you have seen as a unit history:
Replacement will be made with the same model, only. Alternate units will be treated as a new order.
No.
Date
Notes
Asked for Your Technician for Help?
Did You Ask YMGI Tech. for Help?
CUSTOMER SERVICE / TECHNICAL SUPPORT FROM YMGI GROUP
For questions or help with your unit, contact the original installer or service provider.
YMGI Group does not install nor physically service your unit. Your installer or service provider must check the
unit prior to contacting YMGI Group from your jobsite, in order to be helped in an efficient and timely manner.
* Factory customer service at customerservice@ymgigroup.com Tel: 1-866-833-3138x704
* Factory technical support at techsp@ymgigroup.com Tel: 866-833-3138x703
* Fax: 1-866-377-3355
An "YMGI Group Customer Service/Technical Support Daily Log Sheet" will be filed in writing at our office,
for effective communication between you and YMGI Group customer service, your technician and YMGI Group
technical support. Before contacting the YMGI Group locate the IP# written at the top of your warranty registration
form. Use this IP# whenever you contact the YMGI Group.
DISTRIBUTOR AND MANUFACTURER POLICIES
INSTALLATION NOTES
* All questions concerning sales or money will be directed to the sales distributor from which you purchased the
Put down whatever questions you have or problems you have seen as a unit history:
units.
No.
* Read and follow all policies set forth from the distributor from which you purchased your unit.
Date
* Upon purchase and installation of the unit(s), you agree to be bounded by all policies published by both
Original Installation Company
Name, Technician Name,
Phone & HVAC License #
Job Not Performed
by Technician
Technician Checklist
Completed Fully?
distributors and YMGI.
* YMGI Group has the final authority and supersedes other related parties (distributors, etc.) concerning all
policies regarding YMGI products.
YMGI DISCLAIMING-3 (RE: LIMITED PRODUCT WARRANTY)
1) The YMGI Limited Product Warranty Policy, details the eligibilities, coverage's and other explanations of the
warranty terms between YMGI group and the unit owner.
2) The YMGI Limited Product Warranty Policy and the Warranty Registration Card/Form are either included
inside the user's manual and/or installation instruction manual, or come separately in the unit packaging box/
envelope. If for any reason they are not included with your shipment, contact our sales or customer service to
request a copy (electronic or printed), prior to installation.
3) The checklist, in the Warranty Registration Card/Form, is for the currently licensed/ certified HVAC technician
to fill out completely, while verifying all unit functions are operating correctly. This checklist is for the technician
to test and check all details of your unit, to verify and ensure its proper operation.
SERVICE / MAINTENANCE NOTES
No.
Date
Contents of Service / Maintenance
Technician's Company Name, Technician
Name, Phone & HVAC License #
4) The technician must complete all fields in the Warranty Registration Card/Form, especially the unit model
and serial numbers and distributor information, and most importantly, the technician checklist.
5) Warranty Registration Card/Form shall be mailed, along with the original copy of the currently licensed
HVAC contractor's full installation invoice, to YMGI Group, within 7-days after original installation, in order
MUST READ-2
for YMGI to review and process your warranty registration.
6) Keep a copy of Warranty Registration Card/Form for your own use in the future, to aid in any possible future
warranty claiming, any request of parts, customer service, and/or technical support.
7) YMGI reserves the right to approve or deny the warranty status based on the information reviewed.
Mailing address of the Warranty Registration Card/Form: Warranty Department, YMGI Group, POB 1559,
O'Fallon, MO 63366, USA.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P45 OF 46
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
P46 OF 46