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Midea MSF3-07CRN2, Руководство по обслуживанию

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Service manual 

4 

 

The unit has 3 mins delay between continuously ON/OFF operations. 

Outdoor unit 

Power relay control 

Bird tail propeller fan makes the outdoor unit run more quietly. 

Low noise air flow system 

The hydrophilic fin can improve the heating efficiency at operation mode. 

Hydrophilic aluminum fin 

It is only operated in the heating operation mode except defrosting operation. 

Discharge pipe temperature protect 

Anti-rust cabinet 

Valve protection cover 

4 way valve control 

Содержание MSF3-07CRN2

Страница 1: ...Cover MSF3 07CRN2 MSF3 07HRN2 MSF3 09CRN2 MSF3 09HRN2 AAC 09ESCH MSF3 12CRN2 MSF3 12HRN2 AAC 12ESCH...

Страница 2: ...13 8 1 Wrench torque sheet for installation 13 8 2 Connecting the cables 13 8 3 Pipe length and the elevation 13 8 4 Air purging of the piping and indoor unit 14 8 5 Pumping down Re installation 15 8...

Страница 3: ...4 11 11 Sleep mode 34 11 12 Auto restart function 34 11 13 Turbo mode 34 12 Model and Parameters 35 13 Troubleshooting 36 13 1 Display board 36 13 2 Troubleshooting 37 13 3 Diagnostic chart 38 13 4 Re...

Страница 4: ...t zBe sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury zDo not let the...

Страница 5: ...rational zDo not expose the skin directly to cool air for long periods of time Do not sit in the draft This could harm to your health zDo not use the product for special purposes such as preserving fo...

Страница 6: ...r each operation mode The unit will decide the louver direction according to operation mode Two direction air vane The fan is turn to low speed cooling heating The unit will be turn off at the seventh...

Страница 7: ...makes the outdoor unit run more quietly Low noise air flow system The hydrophilic fin can improve the heating efficiency at operation mode Hydrophilic aluminum fin It is only operated in the heating...

Страница 8: ...imension 3 1 Indoor unit 3 2 Outdoor unit Dimension Mode W H D 7K 710 250 190 9K 710 250 190 12K 815 280 205 Dimension Mode W H D L1 L2 L3 7K 700 535 235 458 280 540 9K 700 535 235 458 280 540 12K 780...

Страница 9: ...3H RPG13H Brand Welling Welling Welling Welling Input W 36 36 36 36 Capacitor uF 1 2 1 2 1 2 1 2 Indoor fan motor Speed hi mi lo r min 1020 930 850 1020 930 850 1100 1000 900 1100 1000 900 Indoor air...

Страница 10: ...Model YDK20G 4E S YDK20G 4E S Brand Input W Capacitor uF Indoor fan motor Speed hi mi lo r min 1180 900 750 1180 900 750 Indoor air flow Hi Mi Lo m3 h 580 550 520 580 550 520 Indoor noise level Hi Mi...

Страница 11: ...Service manual 8 5 Refrigerant cycle diagram Cooling only Heat pump mode...

Страница 12: ...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 i...

Страница 13: ...V a L POWER_IN PORT LOAD_COMP FUSE1 3 15A 250V L1 L1 FRESH LOAD_VALVE LOAD_FAN OUT LOAD_HEAT L 1 CN11 N 1 CN10 O2_L 1 2 CN13 ZR1 10D471K C23 0 1uF 275VAC 1 2 CN15 TRANS_IN t PTC 82RM Dsa 1 Dsb 2 Q0 3...

Страница 14: ...Service manual 11 7 2 Wiring diagram MSF3 07CRN2 MSF3 09CRN2 MSF3 12CRN2...

Страница 15: ...Service manual 12 MSF3 07HRN2 MSF3 09HRN2 MSF3 12HRN2...

Страница 16: ...llowing specifications sheet Grade Unit 7K 9K 12K mm2 1 0 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 Pipe length A m Addition...

Страница 17: ...Check the flare connection for gas leakage 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 p...

Страница 18: ...e charge hose with the push pin to the gas service port Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose Set the 2 way valve to t...

Страница 19: ...r 1 minutes repeat 3 times After purging the air use a torque wrench to tighten the flare nut to on the 2 way valve Check the gas leakage Check the flare connections for gas leakage Discharge the refr...

Страница 20: ...e service port 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 ai...

Страница 21: ...has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 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 a...

Страница 22: ...e 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 wa...

Страница 23: ...3 7 8 8 4 9 2 10 1 9 2 MSF3 07HRN2 Cooling mode Outdoor temperature Dry bulb temp Indoor Conditions Pressure 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Pressure kg cm2 6 2 6 7 7 2 8 0 8 5 9 4 24 C D...

Страница 24: ...ry bulb temp Indoor Conditions Pressure 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Pressure kg cm2 7 8 8 1 8 4 9 0 9 3 10 0 24 C D 17 C W Pressure kg cm2 7 9 8 2 8 7 9 0 9 5 10 1 27 C D 19 C W Pressu...

Страница 25: ...ry bulb temp Indoor Conditions Pressure 25 C 30 C 35 C 40 C 45 C 50 C 21 C D 15 C W Pressure kg cm2 8 4 8 5 8 8 8 9 9 4 9 9 24 C D 17 C W Pressure kg cm2 8 6 8 8 9 2 9 4 10 0 10 4 27 C D 19 C W Pressu...

Страница 26: ...18 2 08 1 97 Sensitive capacity kW 1 57 1 59 1 57 1 55 1 53 1 54 32 C D 23 C W Input kW 0 64 0 71 0 79 0 87 0 95 1 03 10 2 MSF3 07HRN2 SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25 C 30 C 35 C 4...

Страница 27: ...N2 SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25 C 30 C 35 C 40 C 45 C 50 C Total capacity kW 2 44 2 32 2 16 1 98 1 82 1 70 Sensitive capacity kW 1 68 1 63 1 56 1 48 1 40 1 34 21 C D 15 C W Inpu...

Страница 28: ...1 89 1 82 1 73 1 64 1 57 27 C D 19 C W Input kW 0 89 0 97 1 05 1 14 1 22 1 30 Total capacity kW 3 12 2 98 2 86 2 76 2 63 2 50 Sensitive capacity kW 1 83 1 85 1 84 1 81 1 78 1 79 32 C D 23 C W Input k...

Страница 29: ...39 Sensitive capacity kW 2 56 2 59 2 57 2 53 2 50 2 51 32 C D 23 C W Input kW 1 15 1 26 1 43 1 53 1 66 1 80 10 6 MSF3 12HRN2 SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25 C 30 C 35 C 40 C 45 C...

Страница 30: ...city kW 4 77 4 24 3 74 2 41 2 00 1 93 15 C Input kW 1 46 1 39 1 24 1 06 0 98 0 94 Capacity kW 4 49 4 02 3 62 2 28 2 10 1 94 18 C Input kW 1 60 1 39 1 26 1 13 1 07 0 97 Capacity kW 4 46 4 06 3 59 2 17...

Страница 31: ...E6 Evaporator low temperature protection restoring temperature TE7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9...

Страница 32: ...te later Compressor turn off after 5 seconds later Current down If compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor On the unit stops and LED displa...

Страница 33: ...he 4 way valve is off in dehumidifying mode 11 6 2 Compressor and Indoor Fan actions in dehumidifying mode 0 TA TS 2 C B A Block Indoor Fan Compressor and Outdoor Fan LOW ON 6minutes BREEZE OFF 4minut...

Страница 34: ...ehumidifying mode 11 7 2 Generally the outdoor fan is turned off with the on off action of compressor in heating mode except for the defrosting mode or the end of defrost 11 7 3 Action of compressor a...

Страница 35: ...d Angle ANGLHEAT when power is on for the first time 11 8 Defrosting mode available for heating mode 11 8 1 Defrosting condition Defrosting starts when either of the following A and B are satisfied A...

Страница 36: ...reached to 7 5 or 10 minutes B The compressor current has reached to IDEFROST or above IDEROST differs in different models 11 8 4 Defrosting Actions 11 9 Auto mode 11 9 1 The air conditioner automati...

Страница 37: ...decrease 1 per hour Two hours later the set temperature will maintain as a constant and the air circulation is kept at low speed Anti cold function takes precedence over all The total time is 7 hours...

Страница 38: ...A IFAN 5 2A 5 2A 5 5A 5 5A 7 5A 7 5A IRESTOR 4 2A 4 2A 4 5A 4 5A 6 5A 6 5A IDEFROST 3 2A 3 5A 5 0A TE1 28 28 34 TE2 32 32 37 TE3 30 30 33 TE4 26 26 22 TE5 4 4 4 4 3 3 TE6 10 10 10 10 10 10 TE7 60 60 6...

Страница 39: ...icator illuminates then TIMER is set ON PRE DEF indicator For cooling heating mode only The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating At this time PRE...

Страница 40: ...or occurs 4 times X EEROM error On No over zero signal r Extinguish Flash at 5Hz For heat pump mode Failure phenomenon Operation lamp Timer lamp Defrosting lamp Over current protection of the compress...

Страница 41: ...Service manual 38 13 3 Diagnostic chart After energizing no indicator is lighted and the air conditioner can t be operated...

Страница 42: ...s that the instantaneous voltage of main chip is less than 4 5V Check according to the following procedure 13 5 Operation lamp flashes and Timer lamp off Is connector connection good Is voltage being...

Страница 43: ...13 8 Operation lamp on and Timer lamp flashes EEROM error indoor PCB is defective 13 9 Operation lamp flashes Timer lamp flashes This is alarm signal when the main chip can t detect over zero signal...

Страница 44: ...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...

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