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Service manual

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MSG-07/09/12HRIN2

SERVICE MANUAL

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Содержание MSG-07HRIN2

Страница 1: ...Service manual 1 MSG 07 09 12HRIN2 SERVICE MANUAL ...

Страница 2: ... very high and a door or a windows is left open Moisture may condense and wet or damage furniture Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock Do not place anything on the power cable There is risk of fire or electric shock Do not plug or unplug the power supply plug during operation There is risk of fire or electr...

Страница 3: ...t 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 Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp There ...

Страница 4: ...ane The fan is turn to low speed cooling heating The unit will be turn off at the seventh hour Sleep mode auto control The function is usually used in rainy days in springtime or damp areas Independent dehumidification The louver can be set at the desired position or swing up and down automatically Air flow Direction control The mode can be change by the room temperature Auto mode DSP High speed C...

Страница 5: ...aluminum fin It is only operated in the heating operation mode except defrosting operation Anti rust cabinet Valve protection cover 4 way valve control Made from electrolytic zinc steel sheet and anti rust coated components It protects the valves and prevents water from dripping Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly Discharge pipe temperature pro...

Страница 6: ...Service manual 5 3 Dimension 3 1 Indoor unit Inverter Eco model W H A 7K 9K 750 250 188 12K 815 280 195 3 2 Outdoor unit Inverter Eco Dimension Model W H D L1 L2 L3 7K 9K 12K 780 540 250 530 315 590 ...

Страница 7: ...850 1200 Input W RPG13H RPG13H RPG13C Brand Welling Welling Welling Capacitor uF 1 2uF 450VAC 1 2uF 450VAC 1 5uF 450VAC Speed level 3 3 3 Indoor fan motor Hi Mid Lo speed rpm 1050 950 750 1100 1000 800 1060 900 800 Air flow indoor Hi Mid Lo m3 h 500 410 320 520 430 330 560 460 380 Noise level indoor Hi Mid Lo dB A 35 32 26 36 32 26 36 32 26 Input W YDK25 6 3 YDK25 6 3 YDK25 6 3 Capacitor uF 2 5uF ...

Страница 8: ...Service manual 7 5 Refrigerant cycle diagram ...

Страница 9: ...t from the continuous operation under constant air temperature conditions However excludes the initial pull down stage 6 2 Heating operation Indoor air temp DB Outdoor unit air temp DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage ...

Страница 10: ...Service manual 9 7 Wiring diagram Indoor unit 7k 9K Indoor unit 12K ...

Страница 11: ...Service manual 10 Outdoor unit ...

Страница 12: ... the following specifications sheet Unit 7k 9K 12K mm2 1 0 1 5 8 3 Pipe length and the elevation Pipe size Capacity Btu h GAS LIQUID Standard length m Max Elevation B m Max Length A m Additional refrigerant g m 7k 9k 3 8 φ9 52 1 4 φ6 35 5 5 10 30 12k 1 2 φ12 7 1 4 φ6 35 5 5 10 30 Caution Capacity is base on standard length and maximum allowance length is base of reliability Oil trap should be inst...

Страница 13: ...ge Check the flare connection for gas leakage 4 Purge the air from the system Set the 2 way valve to the open position and remove the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute 5 Use torque wrench to tighten the service port cap to a torque of 18n m 6 Set the 3 way valve to the opened posit...

Страница 14: ...e charge hose with the push pin to the gas service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose 5 Set the 2 way valve to the close position 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 7 Immediately set the 3 way valve to the closed position Do this quickly so that th...

Страница 15: ...r 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut to on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3...

Страница 16: ...the service port 3 Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If there is no air in the refrigeration cycle the pressure when the air conditioner is not running is higher than 0 1Mpa discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If this is the case it will not be necessary to apply a evacuation Discharge ...

Страница 17: ...e has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 3 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil if the vacuum pump oil becomes dirty or depleted replenish as needle ...

Страница 18: ...he specified amount of refrigerant if can be charged with a little at a time approximately 150g each time0 while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the refrigerant to be...

Страница 19: ...ter module Protection itself has a protection function against current voltage and temperature 10 2 5 Sensor protection at open circuit and breaking disconnection 10 2 6 Fan Speed is out of control When Indoor Fan Speed is too high higher than 2100RPM or too low lower than 300RPM the unit stops and LED displays failure information and can t return to normal operation automatically 10 2 7Cross Zero...

Страница 20: ...y button on remoter controller After running for 5 hours the rated capacity testing will be cancelled 9 5 Dehumidifying mode 9 5 1 The 4 way valve is off 9 5 2 The indoor fan is fixed in breeze speed 9 5 3 The action of compressor follows the rules below 9 5 4 Low room temperature protection When room temperature decreases to below 10 compressor and outdoor fan will stop indoor fan is Breeze Dehum...

Страница 21: ...e other protections are still valid 9 6 4 Indoor Fan actions at heating mode Indoor Fan can be set at HIGH MID LOW AUTO by using a remote controller but Anti cold wind function prevails Anti cold wind control function at heating mode Condition T Indoor exchanger temp Indoor fan speed T 34 Off 34 T 37 Breeze 37 T 44 Low speed Indoor exchanger temp up T 44 Setting fan speed T 38 Setting fan speed 33...

Страница 22: ...ns consecutively 6 c for more than 3 minutes b The temperature of outdoor heat exchanger remains consecutively lower than 3 c for more than 40 minutes and the temperature remains consecutively 6 c for more than 3 minutes c The temperature of indoor unit pipe decreases 5 c than before 9 7 1 3 The temperature of outdoor heat exchanger remains consecutively lower than 3 c for more than 120 minutes an...

Страница 23: ...s set as low the A C operates with a setting temp of 24 9 10 3 At auto mode the A C operates with a set temp of 24 9 11 Timer Function 9 11 1 The maximum length of timer is 24 hours and the minimum resolving power is 15 minutes 9 11 2 Timer on first turn off the A C the A C will be automatically on at the set time 9 11 3 Timer off first turn on the A C the A C will be automatically off at the set ...

Страница 24: ...or short circuit of indoor temperature sensor O O Fan speed out of control X O Zero crossing examination error X X EEPROM data error Indoor outdoor communication protection O X O Low temperature protection of outdoor ambient O bright X extinguished flash 10 2 Outdoor Unit Error Display There is a LED red on outdoor main control board The LED is on when the unit is running The LED flashes at a freq...

Страница 25: ...or temperature sensor Outdoor main control board failure Replace after checked failure Temperature sensor failure Replace after checked failure Open or short circuit of indoor temperature sensor Indoor main control board failure Replace after checked failure Power failure Wait if checked the power failure is really too low Over load or too low voltage protection Power control board failure Replace...

Страница 26: ...39 25 10 52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 7 6241 58 2 5397 5 26 8778 32 7 2946 59 2 4468 6 25 4954 33 6 9814 60 2 3577 7 24 1932 34 6 6835 61 2 2725 8 22 5662 35 6 4002 62 2 1907 9 21 8094 36 6 1306 63 2 1124 10 20 7184 37 5 8736 64 2 0373 11 19 6891 38 5 6296 ...

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