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Summary of Contents for Everwell MRL0923E
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Page 1: Table Of Contents
SERVICE MANUAL Models MRL0923E/MRL0923C MRL1213E/MRL1213C MRL1223E/MRL1223C MRL1823E/MRL1823C MRL2423E/MRL2423C 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: Important Notice
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: Product Dimensions
Air Conditioner Service Manual 2. Product Dimensions Indoor Unit: Outdoor Unit: Indoor unit Outdoor unit Model MRL0923E/MRL0923C 777 MRL1213E/MRL1213C 439.2 277.8 777 MRL1223E/MRL1223C 439.2 277.8 MRL1823E/MRL1823C 277.8 MRL2423E/MRL2423C 1010... -
Page 4: Refrigeration Cycle Diagram
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) -
Page 5: Operation Details
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 NOTES: RT-------Room Temperature. IPT------Indoor Pipe Temperature. ST------indoor Setting Temperature. OPT---Outdoor Pipe Temperature. CRT---Compensated Room Temperature 1. Automatic mode 1) The initial RT determines A/C working mode and the setting temperature (ST), the mode is determined effective only once unless A/C shut-down and then re-started.
- Page 7 Air Conditioner Service Manual b. Indoor fan motor automatic airflow speed control, it works as shown in Figure 1: RT－ST 1°C 2°C 4°C Figure 1 Cooling automatic airflow When the temperature changing leads the fan speed variation, the switch can only be made orderly, and in every grade of air flow speed should run 1 minute at least.
- Page 8 Air C Conditioner Se rvice Manual 6) Defro osting functio During de efrosting, on ce mode ch anging, eco nomic opera ation or temp perature set tting signals received, th buzzer an nd display w will make res sponse imme ediately, but t the other o...
- Page 9 Air Conditioner Service Manual Running into defrosting under condition 3, defrosting time set is 10 min. a) Running into the first defrosting in 20 min after start-up. b) The interval from last defrosting equivalent to or more than 50 min (stopping the compressor or the machine in standby is allowed in the meantime).
- Page 10 Air Conditioner Service Manual d. auxiliary electric heating is turned off for more than 30s。 e. ST-RT≥0°C; f. RT﹤25°C; g. IPT≤43°C; (3) The conditions of stopping auxiliary electric heating(any one of the following conditions met, the state stops) a.
- Page 11 Air Conditioner Service Manual Under emergency operation, the function of compressor’s time-delay protection, Anti-frosting protection in cooling mode, Overheating protection in heating mode, sensor fault protection and defrost operate are effective. Under emergency operation, once effective signal from remote controller received, the A/C exits form of emergency mode without delay, and operates according to the setting value from remote controller immediately.
- Page 12 Air Conditioner Service Manual b. When the indoor fan motor running at a low-speed under cold air prevention operation, once auxiliary electric heating works, the vane immediately withdraws from the cold air prevention location and turn back to normal vane angle. While auxiliary electric heating stops, indoor fan motor goes on to run at low-speed accordingly, the vane turns to cold air prevention location Set fan speed Set fan speed...
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Page 13: Wiring Diagram
Air Conditioner Service Manual 5. Wiring diagram MODEL: INDOOR UNIT... - Page 14 Air Conditioner Service Manual MODEL: INDOOR UNIT OUTDOOR UNIT...
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Page 15: Explosion View And Parts
Air Conditioner Service Manual 6. Explosion view and parts Indoor Unit-MRL0923E Part No. Part Name Q’ty Remark 41106-002200 Front Panel 42008-000070 Air Filter 41106-002347 Face Frame 41105-000146 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-002882 Evaporator 41108-000066... - Page 16 Air Conditioner Service Manual Outdoor Unit- MRL0923C Part No. Part Name Q’ty Remark 42011-000108 Grille Optional 41207-000017 Top Cover 92011-000904 Condenser 41203-000038 Outdoor Motor Supporter 22001-000012 Outdoor Motor 42004-000072 Propeller Fan 41205-000126 Left Grille Supporter 41206-000030 Front Plate 42011-000068 Fan Guard 92007-001823 Capillary Assembly 92014-000249...
- Page 17 Air Conditioner Service Manual Indoor Unit- MRL1213E Part No. Part Name Q’ty Remark 41106-002199 Front Panel 42008-000037 Air Filter 41106-002371 Face Frame 41201-000068 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-002812 Evaporator 41108-000066 Screw Cover 42004-000039 Cross Fan 42007-000001 Bearing Mount 22001-000238...
- Page 18 Air Conditioner Service Manual Outdoor Unit- MRL1213C Part No. Part Name Q’ty Remark 42011-000109 Grille Optional 41207-000023 Top Cover 92011-000274 Condenser 41203-000037 Outdoor Motor Supporter 22001-000015 Outdoor Motor 42004-000070 Propeller Fan 41205-000124 Left Grille Supporter 41206-000041 Front Plate 42011-000084 Fan Guard 92007-001993 Capillary Assembly 92014-000308...
- Page 19 Air Conditioner Service Manual Indoor Unit- MRL1223E Part No. Part Name Q’ty Remark 41106-002199 Front Panel 42008-000037 Air Filter 41106-002371 Face Frame 41201-000068 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-002812 Evaporator 41108-000066 Screw Cover 42004-000039 Cross Fan 42007-000001 Bearing Mount 22001-000261...
- Page 20 Air Conditioner Service Manual Outdoor Unit- MRL1223C Part No. Part Name Q’ty Remark 42011-000109 Grille Optional 41207-000023 Top Cover 92011-000274 Condenser 41203-000037 Outdoor Motor Supporter 22001-000013 Outdoor Motor 42004-000070 Propeller Fan 41205-000124 Left Grille Supporter 41206-000041 Front Plate 42011-000084 Fan Guard 92007-001942 Capillary Assembly 92014-000223...
- Page 21 Air Conditioner Service Manual Indoor Unit-MRL1823E Part No. Part Name Q’ty Remark 41106-002201 Front Panel 42008-000075 Air Filter 41106-002356 Face Frame 41105-000146 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-002814 Evaporator 41108-000066 Screw Cover 42004-000012 Cross Fan 42007-000001 Bearing Mount 22001-000267...
- Page 22 Air Conditioner Service Manual Outdoor Unit- MRL1823C Part No. Part Name Q’ty Remark Optional 42011-000110 Grille 41207-000015 Top Cover 92011-000435 Condenser 41203-000037 Outdoor Motor Supporter 22001-000013 Outdoor Motor 42004-000073 Propeller Fan 41205-000124 Left Grille Supporter 41206-000037 Front Plate 42011-000070 Fan Guard 92007-001751 Capillary Assembly 92014-000162...
- Page 23 Air Conditioner Service Manual Indoor Unit- MRL2423E Part No. Part Name Q’ty Remark 41106-002202 Front Panel 42008-000001 Air Filter 41106-002351 Face Frame 41105-000146 Electrical Box Cover 31102-000084 Display PCB 42003-000001 Display PCB Box 92011-002861 Evaporator 41108-000066 Screw Cover 42004-000002 Cross Fan 42007-000001 Bearing Mount 22001-000270...
- Page 24 Air Conditioner Service Manual Outdoor Unit-MRL2423C Part No. Part Name Q’ty Remark 42011-000107 Grille Optional 41207-000019 Top Cover 92011-000501 Condenser 41203-000040 Outdoor Motor Supporter 22001-000014 Outdoor Motor 42004-000086 Propeller Fan 41205-000128 Left Grille Supporter 41206-000026 Front Plate 42011-000069 Fan Guard 92007-001952 Capillary Assembly 92014-000346...
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Page 25: Precaution
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 26 Air Conditioner Service Manual 7.2 SAFETY RULES AND RECOMMENDATIONS FOR THE USER Do not try to install the conditioner alone; always contact specialized technical personnel. Cleaning and maintenance must be carried out by specialized technical personnel. In any case disconnect the appliance from the mains electricity supply before carrying out any cleaning or maintenance.
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Page 27: Names Of Parts
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 ... -
Page 28: Installation Manual
Air Conditioner Service Manual 9. Installation manual 9.1 Installation Details Connecting pipe length Pipe size(Inch) Model Liquid MRL0923E/MRL0923C MRL1213E/MRL1213C MRL1223E/MRL1223C MRL1823E/MRL1823C MRL2423E/MRL2423C Outdoor unit Indoor unit Pipe length is 15 Pipe length is 15 meters Max. meters Max. Indoor unit... - Page 29 Air Conditioner Service Manual 9.2 Installation for the first time Indoor unit Install the indoor unit level on a strong wall that is not subject to vibrations Mounting plate The inlet and outlet ports should not be obstructed: the air should be able to blow all over 150mm the room.
- Page 30 Air Conditioner Service Manual Install the indoor unit in the room to be air conditioning, avoiding to installation in corridors or communal areas. 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.
- Page 31 Air Conditioner Service Manual 6).The plug must be accessible also after the appliance has been installed so that it can be pulled out if necessary. .An efficient earth connection must be ensured. 8).If the power cable is damaged, it must be replaced by an authorized Service Centre.
- Page 32 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 ...
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Page 33: Trouble Shooting
Air Conditioner Service Manual 10. Trouble shooting 10.1 Product does not operate at all. Power receptable voltage Product input voltage Power supply voltage check PCB assembly Power input voltage Driving load terminal Connector contact check Display PCB connector Power trans output voltage AC about 12±3V ... - Page 34 Air Conditioner Service Manual 10.2 Indoor fan does not operate at all (E6). Check: Connector contact Motor output connector check Motor capacitor Check: Motor bearing inserted Motor-related parts state Fan(Blower) fixed state Fan(Blower) contact state Motor detail check Operation mode check Check: Motor driving circuit PCB ass'y check...
- Page 35 Air Conditioner Service Manual 10.3 Compressor or outdoor fan does not operate at all. Re-input after power off Set the desired temperature of remote controller to be lower by 2°C or over than room temperature, and start the cooling operation. Repeat running/stopping Does not operate at all.
- Page 36 Air Conditioner Service Manual 10.4 Vane does not operate at all. Vane bending, structures interference check Connector check (Broken/short circuit/mal- connection) Replace the vane motor Vane motor check PCB ass'y check(vane Replace the PCB motor driving circuit) 10.5 Cooling/heating conversion is disable. Heating operation ON by remocon Connector check If the 4-way valve is ON, "tick"...
- Page 37 Air Conditioner Service Manual 10.6 Examples of repairing 10.6.1 Display 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 38 Air Conditioner Service Manual 2) The indoor motor damage. Solution: Check and replace the motor. 3) The indoor main PCB damage. Solution: Replace the indoor main PCB.
- Page 39 Air Conditioner Service Manual 10.7 THERMISTOR TEMPERATURE CHARACTERISTICS Indoor unit room temperature and pipe temperature characteristics TEMP. Resistance Voltage of TEMP. Resistance Voltage of TEMP. Resistance Voltage of (℃) (k Ohm) resistance (℃) (k Ohm) resistance (℃) (k Ohm) resistance 63.513 4.628...
- Page 40 Air Conditioner Service Manual Resistance at 25℃: 5 kΩ. 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.
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