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Summary of Contents for TGM MWVT09S / MRVT09AS
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Page 2: Table Of Contents
Content Content Precaution ........................2 1.1 Safety Precaution ..........................2 1.2 Warning ............................2 Function ........................5 Dimension ........................7 Specification ........................8 Refrigerant cycle diagram ................... 16 Operation limits ......................17 Wiring diagram ......................17 Installation details ......................24 8.1 Wrench torque sheet for installation .................... -
Page 3: Precaution
Service manual Precaution 1.1 Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 Warning ... - Page 4 Service manual Do not place a heater or other appliance near the power cable. There is risk of fire and electric shock. Do not allow water to run into electric parts. It may cause fire, failure of the product, or electric shock. ...
- Page 5 Service manual Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigerant system. There is risk of damage or loss of property. Do not block the inlet or outlet of air flow. It may cause product failure.
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Page 6: Function
Service manual Function Indoor unit Operation by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance with the setting temperature. Anti-freezing control in cooling Prevent the water being frozen on evaporator by sensing the Ionizer evaporator pipe temperature in cooling mode Time Delay Safety control... - Page 7 Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation.
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Page 8: Dimension
Service manual Dimension Indoor unit: Dimension Model 1180 Outdoor unit: Dimension Model 9K, 12K Cooling 9K, 12K Cooling & Heating 18K Cooling 18K Cooling & Heating - 7 -... -
Page 9: Specification
Service manual Specification Table 1: Model MWVT09S/ MRVT09AS MWHVT09S/ MRHVT09AS Indoor MWVT09S MWHVT09S Outdoor MRVT09S MRHVT09S Power supply Ph-V-Hz 1Ph, 220-230V～, 60Hz 1Ph, 220-230V～, 60Hz Capacity Btu/h 9000(3300~11200) 9000(3300~11200) Input 850(240~1200) 830(240~1200) Cooling Rated current 4.8(1.2~5.3) 4.1(1.2~5.3) Capacity Btu/h ----- 10000(4000~13000) Input -----... - Page 10 Service manual Dimension(W*D*H) 795x165x270 795x165x270 Indoor unit Packing (W*D*H) 850x285x340 850x285x340 Net/Gross weight 9/12.5 9/12.5 Model YDK24-6GB YDK24-6GB Brand Welling Welling Outdoor fan motor Input 72/53 72/53 Capacitor Speed r/min 830/570 830/570 Number of rows Tube pitch(a)x row pitch(b) 21x13.37 25.4x22 Fin spacing Outdoor coil...
- Page 11 Service manual Table 2: Model MWVT12S/ MRVT12AS MWHVT12S/ MRHVT12AS Indoor MWVT12S MWHVT12S Outdoor MRVT12S MRHVT12S Power supply Ph-V-Hz 1Ph, 220-230V～, 60Hz 1Ph, 220-230V～, 60Hz Capacity Btu/h 12000(4100~13800) 12000(4100~13800) Input 1100(360~1400) 1100(360~1400) Cooling Rated current 5.0(1.8~6.5) 5.0(1.8~6.5) Capacity Btu/h ----- 13000(4400~16000) Input ----- 1080(350~1420)
- Page 12 Service manual Input 72/53 72/53 Capacitor Speed r/min 830/570 830/570 Number of rows Tube pitch(a)x row pitch(b) 21x13.37 22x19.05 Fin spacing Outdoor coil Fin type (code) Unhydrophilic aluminium Hydrophilic aluminium Tube outside dia. and type φ7, innergroove tube φ7.94, innergroove tube Coil length x height x width 744x504x26.67 656x550x38.1...
- Page 13 Service manual Table 3: Model MWVT18S/ MRVT18AS MWHVT18S/ MRHVT18AS Indoor MWVT18S MWHVT18S Outdoor MRVT18S MRHVT18S Power supply Ph-V-Hz 1Ph, 220-230V～, 60Hz 1Ph, 220-230V～, 60Hz Capacity Btu/h 18000(5400-19000) 18000(5400-19000) Input 1720(750-2000) 1700(750-2000) Cooling Rated current 8.3(3.2-9.0) 8.3(3.2-9.0) Capacity Btu/h ----- 18000(5700-19800) Input ----- 1520(720-2050)
- Page 14 Service manual Input 133/110 166/105 Capacitor Speed r/min 950/720 800/600 Number of rows Tube pitch(a)x row pitch(b) 21x13.37 25.4x22 Fin spacing Outdoor coil Fin type (code) Unhydrophilic aluminium Hydrophilic aluminium Tube outside dia. and type φ7, innergroove tube φ9.52, innergroove tube Coil length x height x width 655x546x26.74 766x660x44...
- Page 15 Service manual Table 4: Model MWVT24S/ MRVT24AS MWHVT24S/ MRHVT24AS Indoor MWVT24S MWHVT24S Outdoor MRVT24S MRHVT24S Power supply Ph-V-Hz 1Ph, 220-230V～, 60Hz 1Ph, 220-230V～, 60Hz Capacity Btu/h 24000(6200-25000) 24000(6200-25000) Input 2300(840-2350) 2300(840-2350) Cooling Rated current 11.0(3.6-11.0) 11.0(3.6-11.0) Capacity Btu/h ----- 24000(6200-25000) Input ----- 2200(720-2720)
- Page 16 Service manual motor Brand Welling Welling Input 157.3/93.8 157.3/93.8 Capacitor Speed r/min 790/540 790/540 Number of rows Tube pitch(a)x row pitch(b) 21x13.37 21x13.37 Fin spacing Outdoor coil Fin type (code) Unhydrophilic aluminium Hydrophilic aluminium Tube outside dia. and type φ7, innergroove tube φ7, innergroove tube Coil length x height x width 773x798x26.74+392x798x13.37...
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Page 17: Refrigerant Cycle Diagram
Service manual Refrigerant cycle diagram Cooling only mode Heat pump mode - 16 -... -
Page 18: Operation Limits
Service manual Operation limits Mode Cooling operation Heating operation Drying operation Temperature Room temperature 17℃~ 32℃ 17℃~ 27℃ 10℃~ 32℃ 18℃~50℃ (-15℃~43℃:For the models Outdoor temperature 15℃~ 34℃ 10℃~ 50℃ with low temperature cooling system) Wiring diagram MWVT09S; MWHVT09S; MWVT12S; MWHVT12S; MWVT18S; MWHVT18S Indoor unit: - 17 -... - Page 19 Service manual MRVT09AS; MRVT12AS Outdoor unit: - 18 -...
- Page 20 Service manual MRHVT09AS, MRHVT12AS Outdoor unit: - 19 -...
- Page 21 Service manual MRVT18AS; MRHVT18AS Outdoor unit: - 20 -...
- Page 22 Service manual MWVT24S; MWHVT24S Indoor unit: - 21 -...
- Page 23 Service manual MRVT24AS Outdoor unit: - 22 -...
- Page 24 Service manual MRHVT24AS Outdoor unit: - 23 -...
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Page 25: Installation Details
Service manual Installation details 8.1 Wrench torque sheet for installation Outside diameter Torque inch Kg.m φ6.35 φ9.52 φ12.7 φ15.88 φ19.05 8.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit 8.3 Pipe length and the elevation Standard Max. -
Page 26: Air Purging Of The Piping And Indoor Unit
Service manual 8.4 Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect the compressor, reduce the cooling capacity, and could lead to a malfunction of unit. -
Page 27: Pumping Down (Re-Installation)
Service manual 8.5 Pumping down (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. 2. -
Page 28: Re-Air Purging (Re-Installation)
Service manual 8.6 Re-air purging (Re-installation) Procedure: Confirm that both the 2-way and 3-way valves are set to the closed position. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. Air purging. -
Page 29: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual 8.7 Balance refrigerant of the 2-way, 3-way valves Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. -
Page 30: Evacuation
Service manual 8.8 Evacuation Procedure: 1. Connect the vacuum pump to the charge set’s centre hose. 2. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. 3. -
Page 31: Gas Charging
Service manual 8.9 Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid refrigerant). -
Page 32: Electronic Function
Service manual Electronic function 9.1 Abbreviation T1: Indoor ambient temperature T2: Pipe temperature of indoor heat exchanger T3: Pipe temperature of outdoor heat exchanger T4: Outdoor ambient temperature 9.2 Display function 9.2.1 Icon explanation on indoor display board. OPERRATION indicator This indicator flashes after power is on and illuminates when the unit is in operation. -
Page 33: Protection
Service manual TEMPERATURE indicator Usually it displays the temperature settings. When change the setting temperature, this indicator begins to flash, and stops 20 seconds later. It displays the room temperature when the air conditioner is in FAN only operation. When the unit stops operation, it returns to original factory settings. -
Page 34: Fan-Only Mode
Service manual 9.4 Fan-Only Mode 9.4.1 Temperature setting function is disabled, and no setting temperature display. 9.4.2 In this mode, the action of louver is the same as in cooling mode. 9.4.3 The action of auto fan in fan-only mode is the same as auto fan in cooling mode with 24℃ setting temperature. high medium 9.5 Cooling Mode... -
Page 35: Drying Mode
Service manual I1COOL I2COOL I3COOL 9K Model 5.0 A 6.5 A 7.5 A 12K Model 5.5A 7.0 A 7.8 A 18K Model 9.5 A 10.5 A 24K Model 11 A 13 A 9.5.4 Rating capacity test function 1) Set the indoor unit with remote controller as: high fan, 17℃ in cooling mode, then press “TURBO” button on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine will turn into rating capacity test mode, the buzzer will make a “di”... -
Page 36: Heating Mode
Service manual 9.7 Heating mode 9.7.1 Indoor fan action: Anti-cold-wind function. setting fan speed low fan breeze super fan stop If the compressor stops caused by room temperature rising, indoor fan will be forced to run 127 seconds with breeze. During this period, anti-cold-wind is disabled. - Page 37 Service manual 9.7.4 Outdoor unit current control in heating mode. comp. pause I3HEAT freq. descends if curr. rises; I2HEAT freq. remains if curr. descends I1HEAT running normally Remark: I1HEAT I2 HEAT I3 HEAT 9K Model 5.5 A 7.0 A 8.0A 12K Model 5.5 A 7.0 A...
- Page 38 Service manual 9.7.7 Defrosting action. For 9K, 12K, 18K: compressor 4-way valve outdoor fan indoor fan indoor breeze no longer than 10 minutes For 24K: compressor 4-way valve outdoor fan indoor fan indoor fan breeze 10s 100s no longer than 10 minutes 9.7.8 Rating capacity test function.
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Page 39: Auto Mode Function
Service manual Elevate current frequency (excluding F8) to a higher grade. If indoor fan is in low speed or pause caused by defrosting or anti-cold-wind function, frequency of compressor will not be elevated one grade until these limit has been released. Indoor fan changes to turbo speed and anti-cold-wind function is valid. -
Page 40: Two Speeds Outdoor Fan Function
Service manual 9.11 Two speeds outdoor fan function 9.11.1 Outdoor fan starts at the same time with compressor, but stops 30 seconds later after compressor stop. 9.11.2 Outdoor fan action in heating mode(including heating in auto mode). high high Outdoor fan action in heating mode Outdoor fan action in cooling &... -
Page 41: Auto-Restart/Automatic Panel Function
Service manual 9.14 Auto-Restart function The indoor unit is equipped with auto-restart function, which is carried out through an auto-restart module. In case of a sudden power failure, the module restores the setting conditions before the power failure. The unit will resume the previous operation setting (including Mode, Fan speed, Temperature, ON/OFF) automatically after 3 minutes when power returns. -
Page 42: Follow Me Function
Service manual 9.18 Follow me function Follow me function is chosen through wire jumper J1 in indoor PCB, it’s available when the unit has detected that J1 is on after getting through the power. If the indoor PCB receives the signal which results from pressing the FOLLOW ME button on remote controller, the buzzer will emit a sound and this indicates the follow me function is initiated. -
Page 43: Troubleshooting
Service manual Troubleshooting Safety Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down the power supply, electricity power still are kept in capacitors, do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Bulb (25-40W) -
Page 44: Indoor Unit Error Display
Service manual 10.1 Indoor Unit Error Display Display LED STATUS EEPROM parameter error Indoor / outdoor units communication protection Zero-crossing signal error Fan speed out of control Open or short circuit of outdoor ambient or condenser temperature sensor Open or short circuit of indoor room or evaporator temperature sensor Inverter module (IGBT) over-strong current protection Over voltage or too low voltage protection Temperature protection of compressor top. - Page 45 Service manual 10.2.2 E1(indoor / outdoor units communication protection) error diagnosis and solution Disconnect the power supply, after 1 minute, connect the power supply, turn on the unit with remote controller Does the unit work normally? Check the wiring between indoor and outdoor unit.
- Page 46 Service manual 10.2.4 E3(indoor fan speed out of control) diagnosis and solution Is the indoor fan motor Repair the connector and connector and connection reconnect good? Is voltage being applied to the fan motor? Indoor PCB is defective. (rang 90v-160v between Replace the indoor PCB.
- Page 47 Service manual 10.2.8 P1(over voltage or too low voltage protection) diagnosis and solution. Be sure the power supply is Is the power supply good? normal when using the units Replace the outdoor e-box. 10.2.9 P2(temperature protection of compressor top) diagnosis and solution. Is the connection Does compressor Reconnect and retest.
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Page 48: Temperature Sensors
Service manual 10.3. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor exhaust temp.(Te) sensor. Measure the resistance value of each winding by using the multi-meter. Some frequently-used R-T data for T1, T2, T3 and T4 sensor: Temperature ( ) Resistance Value (KΩ) Some frequently-used R-T data for Te sensor:...
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