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Service manual

8

5. Operation limits

5.1 Cooling operation

Outdoor unit air temp.

℃

DB

Indoor 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.

5.2 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.

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Содержание MSH-21HRN1-QB8

Страница 1: ...ce manual Service manual Room airconditioner Room airconditioner Room airconditioner Room airconditioner Split Wall mounted Type Split Wall mounted Type Split Wall mounted Type Split Wall mounted Type...

Страница 2: ...12 7 6 Re air purging Re installation 13 7 7 Balance refrigerant of the 2 way 3 way valves 14 7 8 Evacuation 17 7 9 Gas charging 18 8 Electronic function 19 8 1 Proper symbols and their meaning 19 8 2...

Страница 3: ...Operation lamp flashes and Timer lamp off 29 10 6 Operation lamp flashes and Timer lamp on 29 10 7 Operation lamp off and Timer lamp flashes 30 10 8 Operation lamp on and Timer lamp flashes B d Nie zd...

Страница 4: ...stand It may cause injury accident or damage to the product Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property da...

Страница 5: ...uld cause product malfunction or inefficient operation Operational 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 Do not us...

Страница 6: ...ouver 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 hour Sleep mode auto control The function is us...

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: ...ervice manual 5 3 Dimension 3 1 Indoor unit Dimension Mode W H D 21K 1030 313 221 24K 1030 313 221 3 2 Outdoor unit Dimension Mode W H D L1 L2 L3 21K 845 695 335 560 360 560 24K 845 695 335 560 360 56...

Страница 9: ...000 1235 1145 1045 m3 h 1000 960 880 1080 1020 960 dB A 47 45 43 48 46 43 Model YDK53 6E YDK100 6C Brand Welling Welling Input W 181 173 Capacitor uF 3 5 Speed r min 840 900 m3 h 2500 2500 dB A 60 62...

Страница 10: ...Service manual 7 4 Refrigerant cycle diagram Cooling only Heat pump mode...

Страница 11: ...from the continuous operation under constant air temperature conditions However excludes the initial pull down stage 5 2Heating operation Indoor air temp DB Outdoor unit air temp DB Note The chart is...

Страница 12: ...Service manual 9 6 Wiring diagram Indoor Outdoor...

Страница 13: ...cording to the following specifications sheet Grade Unit 21K 24K mm 2 2 5 2 5 7 3 Pipe length and the elevation Pipe size Capacity Btu h GAS LIQUID Standard length m Max Elevation B m Max Pipe length...

Страница 14: ...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 15: ...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 16: ...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 17: ...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 18: ...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 19: ...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 20: ...ature TE6 Evaporator low temperature protection restoring temperature TE7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperatu...

Страница 21: ...in 4 minutes the unit stops and LED displays failure information and can t returns to normal operation automatically 8 4 5 The current protection of the compressor If compressor turns off for continuo...

Страница 22: ...Service manual 19...

Страница 23: ...Compressor and outdoor fan on Compressor and outdoor fan off after 5 mins 8 7 Dehumidifying mode Indoor fan speed at low speed Protection is same as cooling mode 8 8 Heating mode 8 8 1 Generally the...

Страница 24: ...ter can be changed from 0 to 3 8 8 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 cont...

Страница 25: ...nd of latest defrost that evaporator high temperature protection only closes outdoor fan with the compressor still running add up to 90 minutes 8 9 2 Conditions of defrost ending Defrosting ends when...

Страница 26: ...he A C operates at the DRY mode with a set temp of 24 8 11 3 All protections of remote control cooling are available at forced cooling operation 8 11 4 Forced Auto function Select forced auto function...

Страница 27: ...2 hours and during the next time the set temp do not change The total time is 7 hours after 7 hours the unit stops 8 13 Auto restart function In case of a sudden power failure this function automatic...

Страница 28: ...nd Parameters Model MSR1 21HRN1 QB8 MSR1 24HRN1 QB8 I3SEC 14A 18A I5MIN 20A 24A IFAN 22A 26A TE1 25 25 TE2 32 32 TE3 30 30 TE4 20 20 TE5 2 2 TE6 12 12 TE7 63 63 TE8 57 57 TE9 50 50 ANGLCOOL 67 67 ANGL...

Страница 29: ...or illuminates while the air conditioner is in economic operation 10 2 Troubleshooting For models adopting electrical function Failure phenomenon Operation lamp Timer lamp Defrosting lamp Auto lamp Ov...

Страница 30: ...eck if AC 220V power supply outputs to indoor PCB Check if AC 220V exists at the primary coil of transformer Yes YES No Check if AC 14 5V exists at the secondary coil of transformer Indoor PCB is defe...

Страница 31: ...k if the failure realease Yes After changing indoor fan motor check if the failure realease Yes YES Yes Power supply circuit has problems Indoor PCB is defective 10 5 Over current protection of the co...

Страница 32: ...e indoor PCB or change EEPROM if it s changeable 10 9 Indoor unit communication error Check the if the signal wire is well connection Change indoor PCB and check if the error is still exit Connect the...

Страница 33: ...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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