YMGI WMMS-12EC-V2B592 Installation Instructions And User Manual Download Page 44

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YMGI • Your Modern Green Idea

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

PROTECTION AND ERROR CODES

ERROR OR PROTECTION CODE INDICATION

When the Indoor unit is controlled by wired controller, error or protection codes are as follows:

NO.

Meaning

Code Indicated

on display

Compressor high pressure protection unit stop

Indoor unit anti-freezing protection

Low-pressure protection unit stop

Air exhaust protection unit stop

Over current protection unit stop

Communication malfunction unit stop

Unit modes conflict

Jumper malfunction

Defrosting /Heating oil return

Defrost

Compressor overload protection unit stop

System Unit malfunction

IPM modular protection unit stop

PFC protection unit stop

Compressor malfunction

Water spill protection

Indoor ambient temp. sensor malfunction

Indoor pipe temp. sensor malfunction

Outdoor ambient temp. sensor malfunction

Outdoor pipe temp. sensor malfunction

Outdoor air exhaust temp. sensor malfunction

E2 PROM Error

Wire control ambient temp. sensor malfunction

Summary of Contents for WMMS-12EC-V2B592

Page 1: ...ed documents manuals provided by YMGI Failure to follow and adhere to all codes and documentation can cause damage to equipment property even personal injury Installer Currently licensed certified HVA...

Page 2: ...2 Brief Introduction to Ceiling Cassette Mini Split System 13 Indoor Unit Diagram 14 Specifications 15 Unit Dimensions 16 Wiring Connections 17 Recommended Tools 18 Installation Instructions 19 Instal...

Page 3: ...cessary to perform these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants HVAC R te...

Page 4: ...rized system installer or HVAC professional as soon as possible and provide the following information Data on the unit model number serial number and owner s name A detailed description of the unit s...

Page 5: ...turer may not require certified and licensed personnel to install Reading and following YMGI Group recommendations and requirements contained in the following pages and other documents is the first st...

Page 6: ...Not installing an oil P trap in the copper suction line where the indoor unit is located 18 feet or more below the outdoor unit 3 Cross piping and or cross wiring of any units including more than one...

Page 7: ...entifying marks on each pair of copper lines and wiring cable sets to keep from cross piping or cross wiring in multiple zone installations or where pipes for different single zone systems are close t...

Page 8: ...riginal installation location or 90 days as of original shipping date from YMGI Group whichever comes first This is a standard limited liability warranty and DOES NOT cover the following Any damage or...

Page 9: ...ranty request will be charged accordingly 3 YMGI will ground ship the parts ASAP Expedited shipping is available at the customer s expense 4 Replacement parts that have an approved warranty registrati...

Page 10: ...YMGI Your Modern Green Idea YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 10...

Page 11: ...e and it will be easier for you to determine if they are reputable Use only a reputable licensed certified HVAC installation professional to prevent any unexpected charges because of unethical busines...

Page 12: ...ference between indoor and outdoor unit within 41 F 5 C YMGI Group recommends that only properly trained and authorized personnel be allowed to repair or service the unit Improper repairs or servicing...

Page 13: ...g or bracket kit is used some outdoor units can be stacked 2 or 3 units high depending upon unit size and applications Air is discharged horizontally quietly and smoothly These units are a perfect fit...

Page 14: ...YMGI Your Modern Green Idea YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 14 Indoor Unit Diagram...

Page 15: ...aled by Dry Nitrogen Yes Yes Yes Flare Nut Liquid Gas 1 4 3 8 1 4 1 2 1 4 5 8 Drain Hose Connection OD In 1 22 1 22 1 22 Condensate Pump Installed Lift In Yes 25 Yes 25 Yes 25 Refrigerant Environmenta...

Page 16: ...W2 W3 W4 H H1 H2 H3 H4 WMMS 12EC V2B 59 2 25 19 32 25 19 32 23 5 8 23 5 8 16 3 8 2 1 2 9 3 32 7 1 16 1 27 32 4 3 8 5 5 32 WMMS 18EC V2B 59 2 25 19 32 25 19 32 22 13 32 22 13 32 16 3 8 2 1 2 9 3 32 7...

Page 17: ...Products for A Sustainable and Efficient Green World 17 Wiring Connections WMMS 12EC V2B 59 2 WMMS 18EC V2B 59 2 WMMS 24EC V2B 59 2 Model Power Supply MCA A MOP A WMMS 12EC V2B 59 2 208 230V 1ph 60Hz...

Page 18: ...evel Flash Light Screw Driver Phillips and Flat Hammer Knife Scissors Goggled Glasses Mask Gloves Ladder 2 Refrigeration Related Work Flat Surface Wrench Two Flare Nut Tool Set Hex Head Key Set Torch...

Page 19: ...t platform on the ground or bracket for the wall before or during construction and before installation Read installation instructions for all units thoroughly Ask rep distributor YMGI Group anything y...

Page 20: ...L 200 4 Washer 10 10 5 Paper template for installation 1 6 Screws 4 ST4 8 13 F Use for Paper pad for installation 7 Heat preservation Sponge for pipe 2 Encase the tie in 8 Big sealing pad 1 5 160 300...

Page 21: ...door unit and will not increase noise and vibration 4 Select a place easy to drain water and connect with the outdoor unit 5 Make sure there is enough space for maintenance and make sure the distance...

Page 22: ...se a level or vinyl hose filled with water to adjust the unit to level Tighten the bolts to a secure position INSTALLING DRAIN PIPE Install the drain pipe with a downward gradient 1 50 to 1 100 so the...

Page 23: ...HE GRILLE ASSEMBLY TO THE BODY Install the grille assembly to the body with the four bolts spring washers and washers Wireless unit connection wire wiring 1 Connect the connector in accordance with th...

Page 24: ...tward 2 Removing the intake grille 1 Slide the two grille stoppers inward and then open the intake grill 2 Remove the grille hook screws and then open the intake grille 1 The louver angle cannot be ch...

Page 25: ...both inside and outside with refrigerating machine oil and initially tighten by hand 3 or 4 turns Check the pipe connector for gas leaks then insulate it as shown in the drawing below Use sealing pad...

Page 26: ...ire at both indoor unit and outdoor unit wiring terminal Notes The temperature of refrigerant circuit will be high please keep the interconnection cable away from the copper tube An all pole disconnec...

Page 27: ...For the following items take special care during construction and check after installation is finished Items to check If not properly done what is likely to happen Check Is the indoor unit fixed firml...

Page 28: ...iron wire or copper wire may cause the unit to break down or could potentially cause fire Do not check or attempt to repair the unit while it is operating Serious injury or property damage may result...

Page 29: ...ransmitting any noise to walls cabinets etc Pipe length not to exceed 150 feet elevation not to exceed 35 feet Insulate both the liquid and gas copper lines with at least 3 8 inch thick insulation tub...

Page 30: ...er damage to it Fix the pipe combination securely on the external wall with proper clamps 6 feet apart Fill the gap between the wall hole and wall sleeve with putty to keep rain or dust entering insid...

Page 31: ...ice valves remain front seated Turn off manifold valve low to check if the vacuum level is maintained for a minimum of 60 minutes Be certain there is no pressure in the system when repairing a leak Va...

Page 32: ...YMGI Your Modern Green Idea YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 32...

Page 33: ...f in HEAT mode the Indoor Unit will continue to run and blow residual heat out before powering off completely Indoor fan motor will stop when the unit is in DEFROST MODE or the system need to perform...

Page 34: ...d will shift every 3 5 minutes Sleep Function In COOLING and FAN modes the SLEEP function works as follows During the 1st Hour the Set Temperature will be allowed to increase 1 F In the 2nd Hour the T...

Page 35: ...see the word OFF is not displayed next to the current time on the CLOCK the TIMER OFF function is inactive When both times are set on your REMOTE you will see ON OFF next to the CLOCK on the REMOTE C...

Page 36: ...Function is turned on while the fan is running on the Indoor Unit Unit Display The Display on the Indoor Unit will only show current settings when the LIGHT function is turned ON If the Indoor Unit s...

Page 37: ...mes Communication malfunction E6 Blink 6 times Defrost or heating oil return H1 Blink once The indoor ambient temperature sensor is open short circuit F1 Blink once Any indoor evaporator temperature s...

Page 38: ...he distance between signal sender and receiving window should be no more than 8m and there should be no obstacles between them Signal may be experience interference in rooms where there are fluorescen...

Page 39: ...emove the two screws Slide both knobs simultaneously towards center as shown and then pull them downward slowly 2 Remove the air filters Slide knobs on the back of the air intake grille outward and re...

Page 40: ...e Attention Do not wash with hot water 5 Replace the air filter 6 Replace the grille 7 Close the suction grille NOTE Never use water hotter than 113 F to wash the unit or the filters as this can disco...

Page 41: ...the parts that will need to be replaced and bring tools with you for maintenance Step 3 You should not only bring the common tools such as screwdrivers wrenches etc but also you should bring universal...

Page 42: ...rate when Restart right after stopping Once the unit is stopped it stays idle for about 3 minutes to protect the compressor and the unit from any potential damage Press SET TEMP and then release immed...

Page 43: ...ix times 7 Unit modes conflict Seven times 8 Jumper malfunction Fifteen times 9 Defrosting Heating oil return Blink once 10 Compressor overload protection unit stop Three times 11 System Unit malfunct...

Page 44: ...4 5 Over current protection unit stop E5 6 Communication malfunction unit stop E6 7 Unit modes conflict E3 8 Jumper malfunction E3 9 Defrosting Heating oil return Defrost 10 Compressor overload protec...

Page 45: ...H3 Yes E5 11 System is abnormal Blink 4 times H4 No F4 12 Module protection Blink 5 times H5 No E3 13 PFC protection Blink 6 times HC No E5 14 Out of step malfunction of compressor including erase ma...

Page 46: ...connection malfunction at WATER D on main board or the water overflow switch is bad Please check or replace it 3 Indoor ambient temperature sensor is open circuit or short circuit Blink once F1 F0 The...

Page 47: ...seen as a unit history No Date Notes Asked Your Technician for Help Contact YMGI Tech for Help USER NOTES Put down whatever questions you have or problems you have seen as a unit history No Date Insta...

Page 48: ...8 16 and 24 Ton Symphony SOLO DC Inverter 57 2 3 Single Zone 16 SEER 09 36K Btu h 58 4 78 1 Single Zone 18 23 SEER 09 36K Btu h Symphony CHOIR DC Inverter 46 2 DC Inverter Multiple Zone 15 SEER 2x09K...

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