Midea MSG-05CR Service Manual Download Page 42 | Manualshive

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Service manual

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10.8.5 Auto wind at heating mode (T=indoor temp.)

10.8.6 Indoor evaporator high-temperature protection at heating mode

(T=indoor exchanger temp.)

10.8.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time

10.9 Defrosting mode(available for heating mode)

Defrosting condition: Defrosting starts when either of the following

①

&

②

:

①

A and B are satisfied:

A: The compressor keeps running for 40 minutes or more.

B: The temperature difference of evaporator and room temperature meets one of the following:

«
...
40
41
42
43
44
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»

Summary of Contents for MSG-05CR

Page 1: ...MSG 05CR MSG 07CR MSG 07HR MSG 09CR MSG 09HR MSG 12CR MSG 12HR MSG 16CR MSG 16HR MSG 18CR MSG 18HR MSG 21CR MSG 21HR...

Page 2: ......

Page 3: ...ails 21 8 1 Wrench torque sheet for installation 21 8 2 Connecting the cables 21 8 3 Pipe length and the elevation 21 8 4 Air purging of the piping and indoor unit 22 8 5 Pumping down Re installation...

Page 4: ...40 10 12 Sleep mode 40 10 13 Auto restart function 41 10 14 Anion optional 41 11 Model and Parameters 42 12 Troubleshooting 43 12 1 Display board 43 12 2 Troubleshooting 44 12 3 Diagnostic chart 45 1...

Page 5: ...n Be 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 n Do not let the...

Page 6: ...ional n Do 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 n Do not use the product for special purposes such as preserving foo...

Page 7: ...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 after seven ho...

Page 8: ...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 exce...

Page 9: ...Service manual 5 3 Dimension 3 1 Indoor unit Dimension Mode W H L 5K 750 250 188 7K 750 250 188 9K 750 250 188 12K 750 250 188 16K 906 286 235 18K 906 286 235 21K 906 286 235...

Page 10: ...unit Dimension Mode W H D L1 L2 L3 5K 700 535 235 458 280 540 7K 700 535 235 458 280 540 9K 700 535 235 458 280 540 12K 780 540 250 530 315 590 16K 780 540 250 530 315 590 18K 760 590 285 540 335 615...

Page 11: ...60 900 1020 960 900 m3 h 300 270 240 380 350 320 380 350 320 dB A 32 30 28 32 30 28 32 30 28 Model YDK24 6T YDK24 6T YDK24 6T Brand WELLING WELLING WELLING Input W 70 70 70 Capacitor uF 3 3 3 Speed r...

Page 12: ...50 m3 h 450 420 390 450 420 390 550 500 460 dB A 37 34 31 37 34 31 41 38 34 Model YDK24 6T YDK24 6T YDK24 6 Brand WELLING WELLING WELLING Input W 55 55 72 Capacitor uF 2 5 F 450V 2 5 F 450V 2 5 F 450V...

Page 13: ...750 710 650 750 710 650 dB A 41 38 34 41 38 35 41 38 35 Model YDK24 6 YDK36 6 YDK36 6 Brand WELLING WELLING WELLING Input W 72 96 96 Capacitor uF 2 5 F 450V 2 5 F 450V 2 5 F 450V Speed r min 850 900 9...

Page 14: ...00 760 700 dB A 41 38 35 41 38 35 41 37 33 Model YDK25 6H YDK25 6H YDK53 6 Brand WELLING WELLING WELLING Input W 96 96 100 Capacitor uF 2 5 F 450V 2 5 F 450V 2 5 F 450V Speed r min 900 900 640 m 3 h 2...

Page 15: ...00 Capacitor uF 2 5 F 450V Speed r min 640 m 3 h 2200 dB A 54 g 1740 MPa 2 6 Liquid side Gas side mm 6 35 12 7 Max refrigerant pipe length m 20 Max difference in level m 10 17 30 7 45 m 2 34 49 Model...

Page 16: ...Service manual 12 5 Refrigerant cycle diagram Cooling only Heat pump mode...

Page 17: ...The chart is the result 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 t...

Page 18: ...Service manual 14 However excludes the initial pull down stage...

Page 19: ...Service manual 15 7 Schematic diagram and Wiring diagram 7 1 Schematic diagram...

Page 20: ...de MSG 05CR MSG 07CR MSG 09CR MSG 12CR 1 2 N C O M PR ESSO R C APAC I TO R R ED O U TD O O R U N I T O VER LO AD R ELAY Y G C O M PR ESSO R S C BLU E R BLAC K R ED BLAC K I N D O O R U N I T FAN C APA...

Page 21: ...G 16CR 1 2 N C O M PR ESSO R C APAC I TO R R ED O U TD O O R U N I T O VER LO AD R ELAY Y G C O M PR ESSO R S C BLU E R BLAC K R ED BLAC K I N D O O R U N I T FAN C APAC I TO R R ED Y G FAN M O TO R Y...

Page 22: ...E TR AN SFO R M ER DI SPLAY BO AR D S W I TC H B O A R D C N 12 C N 9 C O M PR ESSO R R ELAY C U R R E N T D E TEC TO R W H I TE C N 1 C N 4 B R O W N B LU E C N 14 C N 2 1 2 N C O M PR ESSO R C APAC...

Page 23: ...Service manual 19 7 2 2 MSG 07HR MSG 09HR MSG 12HR...

Page 24: ...Service manual 20 MSG 16HR MSG 18HR MSG 21HR...

Page 25: ...5 2 5 Grade 8 3 Pipe length and the elevation Standard length Max Max Additional m Elevation Elevation refrigerant Btu h GAS LIQUID B m A m g m 3 8 9 52 1 4 6 35 5 5 10 30 1 2 12 7 1 4 6 35 5 5 10 30...

Page 26: ...eck 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 p...

Page 27: ...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...

Page 28: ...1 minutes 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 r...

Page 29: ...he 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...

Page 30: ...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...

Page 31: ...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...

Page 32: ...Total capacity kW 2 13 2 04 1 90 1 80 1 68 1 55 17 C W Sensitive capacity kW 1 57 1 52 1 45 1 38 1 29 1 20 Input kW 0 67 0 71 0 74 0 80 0 88 0 91 27 C D Total capacity kW 2 27 2 17 2 05 1 94 1 81 1 66...

Page 33: ...ive capacity kW 2 47 2 40 2 34 2 19 2 02 1 93 Input kW 0 95 1 00 1 04 1 12 1 25 1 29 OUTDOOR TEMPERATURE DRY 9 5 MSG 09HR SUMMER Cooling mode Indoor Conditions 25 C 30 C 35 C 40 C 45 C 50 C 21 C D Tot...

Page 34: ...69 2 52 2 33 15 C W Sensitive capacity kW 2 46 2 36 2 21 2 05 1 92 1 80 Input kW 1 05 1 11 1 16 1 25 1 39 1 43 24 C D Total capacity kW 3 64 3 48 3 25 3 07 2 86 2 64 17 C W Sensitive capacity kW 2 68...

Page 35: ...61 3 38 3 14 15 C W Sensitive capacity kW 3 30 3 17 2 97 2 75 2 58 2 41 Input kW 1 37 1 44 1 50 1 62 1 80 1 86 24 C D Total capacity kW 4 89 4 67 4 37 4 13 3 85 3 55 17 C W Sensitive capacity kW 3 59...

Page 36: ...4 06 3 80 3 52 15 C W Sensitive capacity kW 3 71 3 56 3 33 3 09 2 90 2 71 Input kW 1 56 1 64 1 71 1 85 2 05 2 12 24 C D Total capacity kW 5 49 5 25 4 91 4 64 4 32 3 98 17 C W Sensitive capacity kW 4 0...

Page 37: ...4 74 4 43 4 11 15 C W Sensitive capacity kW 4 32 4 15 3 89 3 60 3 38 3 16 Input kW 1 97 2 08 2 16 2 33 2 59 2 68 24 C D Total capacity kW 6 41 6 12 5 72 5 41 5 04 4 65 17 C W Sensitive capacity kW 4 7...

Page 38: ...IRESTORE Amp self protection return value THDEFROST High wind defrosting temperature difference TMDEFROST Middle wind defrosting temperature difference TLDEFROST Low wind defrosting temperature differ...

Page 39: ...ss Zero signal error warning If there is no Cross Zero signals in 4 minutes the unit stops and LED displays failure information and can t returns to normal operation automatically 10 4 5 The current p...

Page 40: ...cooling mode Anti freezing control to indoor evaporator at cooling mode T evaporator temp 10 7 Dehumidifying mode 10 7 1 The 4 way valve is off in dehumidifying mode 10 7 2 Compressor and Indoor Fan...

Page 41: ...1 Generally the 4 way valve is open in heating mode but it is closed in defrosting mode 4 way valve must delay 2 minutes compared with compressor if the compressor changed into non heating mode or tu...

Page 42: ...The louver opens to Standard Angle ANGLHEAT when power is on for the first time 10 9 Defrosting mode available for heating mode Defrosting condition Defrosting starts when either of the following A a...

Page 43: ...frost the fourth defrost time should be 10 minutes The circulation is as following Ending condition of defrosting If one of following conditions is satisfied end the defrost and turn into heating mode...

Page 44: ...ose fan mode is set as low the A C operates at the DRY mode with a set temp of 24 10 11 3 All protections of remote control cooling are available at forced cooling operation 10 11 4 Forced Auto functi...

Page 45: ...an only mode the condition will be the same after the air conditioner running under economic mode after 2 hours and during the next time the set temp do not change The total time is 7 hours after 7 ho...

Page 46: ...200 200 200 200 200 ANGLHEAT 0 0 0 ANGLOFF 124 124 124 124 124 124 124 THDEFROST 16 C 14 C 14 C TMDEFROST 17 C 15 C 15 C TLDEFROST 18 C 16 C 16 C Model MSG 16CR MSG 16HR MSG 18CR MSG 18HR MSG 21CR MS...

Page 47: ...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...

Page 48: ...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...

Page 49: ...Service manual 45 12 3 Diagnostic chart After energizing no indicator is lighted and the air conditioner can t be operated...

Page 50: ...s less than 4 5V Check according to the following procedure Resetting phenomenon often occurs during operation After changing indoor PCB check if the failure realease Yes After changing indoor fan mot...

Page 51: ...12 8 Operation lamp on and Timer lamp flashes EEROM error indoor PCB is defective 12 9 Operation lamp flashes Timer lamp flashes This is alarm signal when the main chip can t detect over zero signal...

Page 52: ...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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