Everwell MGTC0913E-20 Service Manual
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Everwell MGTC0913E-20 Service Manual

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MGTC1823E-20 /MGTC1823C-20
CONTENTS
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2.
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8.
9.
Trouble shooting
10.

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  • Page 1 Models MGTC0913E-20 /MGTC0913C-20 MGTC0923E-20 /MGTC0923C-20 MGTC1213E-20 /MGTC1213C-20 MGTC1223E-20 /MGTC1223C-20 MGTC1823E-20 /MGTC1823C-20 MGTC2423E-20 /MGTC2423C-20 MGTC3623E-17 /MGTC3623C-17 CONTENTS Important Notice Product Dimensions Refrigeration cycle diagram Operation details Wiring diagram Explosion view and parts Precaution Names of parts Installation manual Trouble shooting...
  • Page 2 Air Conditioner Service Manual 1. Important Notice This service manual is intended for use by individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair the appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.
  • Page 3 Air Conditioner Service Manual Indoor unit Outdoor unit Model 433.8 MGTC0913E 20 /MGTC0913C 20 48.5 MGTC0923E 20 /MGTC0923C 20 433.8 MGTC1213E 20 /MGTC1213C 20 48.5 MGTC1223E 20 /MGTC1223C 20 1010 MGTC1823E 20 /MGTC1823C 20 1186 374.9 347.5 58.6 MGTC2423E 20 /MGTC2423C 20 1186 MGTC3623E 17 /MGTC3623C 17...
  • Page 4 Air Conditioner Service Manual 3. Refrigeration cycle diagram Cooling only Liquid side 2-way valve Capillary Heat exchange Heat exchange (Evaporator) (condenser) Gas side 3-way valve Accumulator Compressor Heat pump Check valve Liquid side 2-way valve Capillary Assembly Heat exchange Heat exchange (Evaporator) (condenser) Gas side...
  • Page 5 Air Conditioner Service Manual 4.Operation Details Remote controller CLOCK Press this button to set the time. When the time is flashing, press to adjust the time. Every press equals one minute,or press and hold for rapid adjustment. Press CLOCK again once the time has been set. TEMP DOWN button Decrease the temperature or time by 1 unit.
  • Page 6 Air Conditioner Service Manual Electronic Controller 1. Safety Protection (1) Time Delay for Safety protection 3 minutes delay for compressor ---The compressor is ceased for 3minutes before restarting to balance the pressure in the refrigeration cycle in order to protect the compressor. 2 minutes delay for 4-way valve---The 4-way valve will be ceased for 2 minutes late after compressor to prevent the refrigerant-gas abnormal noise when the HEATING operation is OFF or switch to the other operation mode.
  • Page 7 Air Conditioner Service Manual the compressor will run at very low frequency. In general, unit will change its running frequency according toδt to make room temperature closing to set temperature. (2) Outdoor temperature affects running frequency of the compressor Outdoor temperature affect compressor’s running frequency. Difference inlet temperature of outdoor unit is adapted by difference compressor running frequency.
  • Page 8 Air Conditioner Service Manual seconds since the stop of compressor. 2) Auto fan control (heating) In heating mode (include in “I feel” mode) , fan speed is determined by t as the following: t come up RT ST t come down High fan Min fan Low fan...
  • Page 9 Air Conditioner Service Manual overheat protection. The compressor drops its frequency toward to F1 level until IPT≤52 If IPT≤52 and keep for 5 minutes, control system doesn’t limit running frequency. If IPT>62 , control system shut down compressor, and recover while IPT drop less than 50 . 6.
  • Page 10 Air Conditioner Service Manual Error list Digital LED Code Failure Type LED Code RUN、TIMER –both winking Indoor and outdoor communication failure RUN、TIMER –both winking Outdoor communication failure Indoor room temperature sensor (IRT) RUN-1 time/8s Indoor coil temperature sensor (IPT) RUN-2 times /8s Outdoor coil temperature sensor (OPT) RUN-3 times /8s System abnormity...
  • Page 11 Air Conditioner Service Manual Display on outdoor power source board: blink time (n) Failure IPM protection Over voltage /lower voltage Overcurrent Exhaust over temperature protection Outdoor coil over temperature protection Drive fault and protection (V1，VP1) Communication fault with indoor unit Compressor overheat fault (compressor top switch) Short-circuit / open-circuit fault of outdoor temperature sensor Short circuit / open-circuit fault of outdoor heat exchanger temperature...
  • Page 12 Air Conditioner Service Manual 5. Wiring diagram Mode: MGTC0913E-20 /MGTC0913C-20 INDOOR UNIT: OUTDOOR UNIT...
  • Page 13 Air Conditioner Service Manual Mode:MGTC0923E-20 /MGTC0923C-20 INDOOR UNIT OUTDOOR UNIT...
  • Page 14 Air Conditioner Service Manual •: MGTC1213E-20 /MGTC1213C-20 INDOOR UNIT OUTDOOR UNIT...
  • Page 15 Air Conditioner Service Manual MGTC1223E-20 /MGTC1223C-20 MODEL:...
  • Page 16 MGTC1823E-20 /MGTC1823C-20 MGTC2423E-20 /MGTC2423C-20, MODEL: MGTC3623E-17 /MGTC3623C-17...
  • Page 17 Air Conditioner Service Manual 6. Explosion view and parts Indoor Unit- G4BMV00000 KFR-26G/YXABp(E1/6)(BMV00) Part No. Part Name Q’ty Remark Front Panel Air Filter Face Frame Electrical Box Cover Display PCB Display PCB Box Evaporator Screw Cover Cross Fan Bearing Mount Indoor Motor In And Out Pipe Fixer Indoor Motor Cover...
  • Page 18 Air Conditioner Service Manual Outdoor Unit- G5BBW00000 KFR-26W/YXABp(E1/6)(BBW00) Part No. Part Name Q’ty Remark Grille Optional Top Cover Condenser Outdoor Motor Supporter Outdoor Motor Propeller Fan Left grille supporter Front Plate Fan Guard Compressor 4-way Valve 4-way Valve Assembly Base Right Plate Two-way Valve Valve Supporter...
  • Page 19 Air Conditioner Service Manual Indoor Unit- MGTC0923E-20 Part No. Part Name Q’ty Remark 41106-003591 Front Panel 42008-000039 Air Filter 41106-002375 Face Frame 41211-000077 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-004784 Evaporator 41108-000066 Screw Cover 42004-000001 Cross Fan 42007-000001 Bearing Mount 22001-000267_UM...
  • Page 20 Air Conditioner Service Manual Outdoor Unit- MGTC0923C-20 Part No. Part Name Q’ty Remark 42011-000184 Grille 41207-000029 Top cover 92011-000777 Condenser 41203-000054 Outdoor motor supporter 22001-000049_UM Outdoor motor 42004-000107 Propeller fan 41205-000121 Left grille supporter 41206-000052 Front plate 42011-000038 Fan guard 92014-000142 Compressor and accessories 92008-000209...
  • Page 21 Air Conditioner Service Manual Indoor Unit-MGTC1213E-20 Part No. Part Name Q’ty Remark 41106-003591 Front Panel 42008-000039 Air Filter 41106-002375 Face Frame 41211-000077 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-004784 Evaporator 41108-000066 Screw Cover 42004-000001 Cross Fan 42007-000001 Bearing Mount 22001-000307_UN...
  • Page 22 Air Conditioner Service Manual Outdoor Unit- MGTC1213C-20 Part No. Part Name Q’ty Remark 42011-000186 Grille 41207-000040 Top cover 92011-004797 Condenser 41203-000051 Outdoor motor supporter 22001-000049_UN Outdoor motor 42004-000106 Propeller fan 41205-000120 Left grille supporter 41206-000059 Front plate 42011-000041 Fan guard 92007-002134 Capillary assembly 92014-000142...
  • Page 23 Air Conditioner Service Manual Indoor Unit- MGTC1223E-20 Part No. Part Name Q’ty Remark 41106-003591 Front Panel 42008-000039 Air Filter 41106-002375 Face Frame 41211-000077 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-004784 Evaporator 41108-000066 Screw Cover 42004-000001 Cross Fan 42007-000001 Bearing Mount 22001-000267...
  • Page 24 Air Conditioner Service Manual Outdoor Unit- MGTC1223C-20 Part No. Part Name Q’ty Remark Optional 42011-000183 Grille 41207-000029 Top Cover Condenser 41203-000053 Outdoor Motor Supporter 22001-000049 Outdoor Motor 42004-000107 Propeller Fan 41205-000121 Left Grille Supporter 41206-000052 Front Plate 42011-000038 Fan Guard 92007-002134 Capillary Assembly 92014-000142...
  • Page 25 Air Conditioner Service Manual Indoor Unit- MGTC1823E-20 Part No. Part Name Q’ty Remark 41106-002202 Front Panel 42008-000001 Air Filter 41106-002351 Face Frame 41211-000079 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-004728 Evaporator 41108-000066 Screw Cover 42004-000002 Cross Fan 42007-000001 Bearing Mount 22001-000257...
  • Page 26 Air Conditioner Service Manual Outdoor Unit-MGTC1823C-20 Part No. Part Name Q’ty Remark 42011-000169 Grille 41207-000033 Top cover 92011-000616 Condenser 41203-000052 Outdoor motor supporter 22001-000096 Outdoor motor 42004-000104 Propeller fan 41205-000119 Left grille supporter 41206-000057 Front plate 42011-000040 Fan guard 92007-002228 Capillary assembly 92014-000318 Compressor...
  • Page 27 Air Conditioner Service Manual Indoor Unit- MGTC2423E-20 Part No. Part Name Q’ty Remark 41109-000028 Installation Plate 41199-002746 Base 42004-000042 Cross Fan 42007-000001 Bearing Mount 92011-004785 Evaporator 41103-000064 Water Drainage Assembly 41106-002275 Face Frame 41108-000066 Screw Cover 31102-000085 Display PCB 42003-000001 Display PCB Box 42008-000041 Air Filter...
  • Page 28 Air Conditioner Service Manual Outdoor Unit MGTC2423C-20 Part No. Part Name Q’ty Remark 42011-000188 Grille 41207-000028 Top cover 92011-004798 Condenser 41203-000049 Outdoor motor supporter 22001-000110 Outdoor motor 42004-000105 Propeller fan 41205-000117 Left grille supporter 41206-000058 Front plate 42011-000039 Fan guard 92007-002133 Capillary assembly 92014-000318...
  • Page 29 Air Conditioner Service Manual Indoor Unit- MGTC3623E-17 Part No. Part Name Q’ty Remark 41109-000028 Installation Plate 41199-002746 Base 42004-000042 Cross Fan 42007-000001 Bearing Mount 92011-004396 Evaporator 41103-000064 Water Drainage Assembly 41106-002275 Face Frame 41108-000066 Screw Cover 31102-000085 Display PCB 42003-000001 Display PCB Box 42008-000041 Air Filter...
  • Page 30 Air Conditioner Service Manual Outdoor Unit- MGTC3623C-17 Part No. Part Name Q’ty Remark 42011-000166 Back Grille Optional 41207-000016 Top cover 92011-004586 Condenser 41203-000030 Outdoor motor supporter 22001-000120 Outdoor motor 42004-000091 Propeller fan 41205-000125 Left grille supporter 41206-000046 Front plate 42011-000031 Fan guard 92014-000300 Compressor...
  • Page 31 Air Conditioner Service Manual 7. Precaution 7.1 SAFETY RULES AND RECOMMENDATIONS FOR THE INSTALLATION Read this guide before installing and using the appliance. During the installation of the indoor and outdoor units the access to the working area should be forbidden to children.
  • Page 32 Air Conditioner Service Manual instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision. 7.2 SAFETY RULES AND RECOMMENDATIONS FOR THE USER Do not try to install the conditioner alone;...
  • Page 33 Air Conditioner Service Manual Ensure that the appliance is disconnected from the power supply when it will remain inoperative for a long period and before carrying out any cleaning or maintenance. Selecting the most suitable temperature can prevent damage to the appliance. 7.3 SAFETY RULES AND PROHIBITIONS Do not bend, tug or compress the power cord since this could damage it.
  • Page 34 Air Conditioner Service Manual 8.Names of parts INDOOR UNIT Indoor unit 2-3 4 Name Front panel Air filter Special filter(option) Display PCB Vertical vane Horizontal vane Remote controller Outdoor unit Name Air outlet grille Electronic box cover 2-way valve 3-way valve OUTD OOR UNIT...
  • Page 35 Air Conditioner Service Manual Pipe size(Inch) Model Liquid MGTC0913E 20 /MGTC0913C 20 MGTC0923E 20 /MGTC0923C 20 MGTC1213E 20 /MGTC1213C 20 MGTC1223E 20 /MGTC1223C 20 MGTC1823E 20 /MGTC1823C 20 MGTC2423E 20 /MGTC2423C 20 MGTC3623E 17 /MGTC3623C 17 Refrigerant Additional refrigerant B Standard Mode piping Max.
  • Page 36 Air Conditioner Service Manual...
  • Page 37 Air Conditioner Service Manual Install the indoor unit at a height of at least 2.5m from the ground. To install, proceed as follows: 9.2.1 Installation of the mounting plate. 1) By using a level, put the mounting plate in a perfect square position vertically and horizontally.
  • Page 38 Air Conditioner Service Manual 7).An efficient earth connection must be ensured. 8).If the power cable is damaged, it must be replaced by an authorized Service Centre. 9.2.4 Refrigerant piping connection The piping can be run in the 3 directions indicated by numbers in the picture.
  • Page 39 Air Conditioner Service Manual 4).If the piping is installed to the right, the pipes, power cable and drain hose must be lagged and secured onto the rear of the unit with a pipe connection. Insert the pipe connection into the relative slot. Press to join the pipe connection to the base.
  • Page 40 Air Conditioner Service Manual...
  • Page 41 Air Conditioner Service Manual COMP. (S-Black) CN13 CN401 CN12 （LEV (OVT) (OPTOAT) (485-COM) (OHT) （ORQ (CAN-Blue) P5-1、P8 w u v (VAL) CN409 (ACL-Brown) CN12-2 programmed CN11 CN410 (OUTFAN) P10-3(W) U405 P11-1、P11-2 CN12-1 (HEAT) (DC fan motor P10-2(V) feedback) CN407 P10-1(U) For EEPROM programmed P 14 (L...
  • Page 42 Air Conditioner Service Manual COMP. CN13 CN12 （LEV (OHT) (OPTOAT) (OVT) (ACN) （ORQ CN409 CN11 (ACL) (HEAT) CN410 programmed (OUTFAN) P10-1(U) U603 P5-1、P8 CN401 (VAL) P10-2(V) (DCFAN) (485-COM) CN407 P10-3(W) For EEPROM PC monitor programmed P14(L) D412 Q403 IGBT P13(L) DN401 rectifier Electric reactor...
  • Page 43 Air Conditioner Service Manual 1 .5 Examples of repairing 1 .5.1Display E1 or E2 Reasons: 1) The sensor connection terminal loose or not plugged in. Solution: Check the connecter of sensor and slot (CN6), if loose or not plugged in, please connect again.
  • Page 44 Air Conditioner Service Manual 3) The indoor main PCB damage. Solution: Replace the indoor main PCB. 1 .5.3 Display E3, E7 Reasons: 1) Outdoor pipe temp sensor, outdoor temp sensor & exhaust temp sensor connection terminal loose or not plugged in. Solution: Check the connecter of sensor and slot, if loose or not plugged in, please connect again.
  • Page 45 Air Conditioner Service Manual Solution: Check the connecter of sensor and slot, if loose or not plugged in, please connect again. Outdoor pipe temp sensor damage. Fail Solution: Check and replace the sensor. 3) Outdoor PCB damage. Solution: Check and replace the outdoor PCB. 1 .5.
  • Page 46 Air Conditioner Service Manual 1 N L 5) Communication fault if resistance or optical coupler broken, replace outdoor PCB. Communication circuit 6) Is there any burnt on PCB? If no, test the rectifier, FRD, IGBT etc. any component broken, replace PCB.
  • Page 47 Air Conditioner Service Manual Solution: Re-energize and check the protection code on display. Firstly display P0. 1) If this code is displayed when the compressor is started for several seconds or even not started, check the compressor connection for correctness, if no insert wrong, replace outdoor PCB. Compressor connection 2) Check if the outdoor module is tightly installed onto the radiating fins and if the silicone is applied evenly, fix the screws again if loose.
  • Page 48 Air Conditioner Service Manual EEPROM 1 .5. Display CL Cause: Air filter duty, the unit operation Cumulative time 500 hours, the controller will confirmation the filter dirty and display CL. Solution: Clean the air filter then cut off the power and supply again. 1 .6 MALFUNCTION (PARTS) CHECK METHOD 1 .6.1 Procedure for determining defective outdoor unit IPM/compressor The following flow chart shows a procedure for locating the cause of a malfunction when the compressor...
  • Page 49 Air Conditioner Service Manual 1 .6.2 DC Over Current Error Error memory is recorded Start Are valves (2-way or 3-war) close? Full open stop valves Does compressor rotates? Does compressor rotates more than 30 seconds? IPM PWB floating from the heat sink IPM PWB with screws securely.
  • Page 50 Air Conditioner Service Manual 1 .6.3 E0,E5 Error Replace inverter board and power Display E5 Start supply board or outdoor PCB assembly Display E0 Display E5 Display E5 Shut off power and supply Shut off power Replace inverter board and supply again again and observe 10 Mins Display E0...
  • Page 51 Air Conditioner Service Manual 1 .7 THERMISTOR TEMPERATURE CHARACTERISTICS 1. Indoor unit and outdoor exchange temperature and outside air temperature sensor temperature characteristics TEMP. Resistance Voltage of TEMP. Resistance Voltage of TEMP. Resistance Voltage of (℃) (k Ohm) resistance (℃) (k Ohm) resistance (k Ohm)
  • Page 52 Air Conditioner Service Manual Resistance at 25℃: 5 k . TH1: indoor room temperature sensor and outside air temperature sensor TH2: indoor exchange temperature sensor and outside exchange temperature sensor Before measuring resistance, disconnect connectors as shown above. 2. Outdoor unit sensor temperature characteristics TEMP.
  • Page 53 Air Conditioner Service Manual 63.74 70.48 77.87 6.309 6.655 7.013 1.073 1.12 1.168 60.69 67.05 6.08 6.409 6.748 1.042 1.089 1.136 57.81 63.8 70.34 5.861 6.173 6.495 1.013 1.058 1.104 55.08 60.72 66.88 5.651 5.947 6.253 0.9833 1.028 1.074 52.49 57.81 63.61 5.449...

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