Midea MSE-09CRN1-BQ8W, Service Manual

Page 1: ...MSE 09CRN1 BQ8W MSE 09HRN1 BQ8W MSE 12CRN1 BQ8W MSE 12HRN1 BQ8W MSE 12CRN1 MQ8W MSE 12HRN1 MQ8W MSE 18CRN1 MQ8W MSE 18HRN1 MQ8W...

Page 2: ...s 26 8 8 Evacuation 27 8 9 Gas charging 28 9 Electronic function 29 9 1 Electronic control working environment 29 9 2 Proper symbols and their meaning 29 9 3 Function 30 9 4 Protection 30 9 5 Fan only...

Page 3: ...ntrol 44 11 6 Temperature sensor error 45 11 7 Over current protection of the compressor occurs 4 times 45 11 8 EEROM error 45 11 9 Outdoor unit protects 46 11 10 Indoor unit communication error 46 12...

Page 4: ...ker of fuse There is risk of fire or electric shock Do not modify or extend the power cable There is risk of fire or electric shock Do not install remove or reinstall the unit by yourself customer The...

Page 5: ...tric shock Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failu...

Page 6: ...f personal injury Do not step on pr put anything on the product outdoor units There is risk of personal injury and failure of product Always insert the filter securely Clean the filter every two weeks...

Page 7: ...the desired position or swing up and down automatically 13 Auto mode The unit can be change by the room temperature 14 Anti cold function Prevent the cold wind at the beginning of unit start 15 Temp...

Page 8: ...Service manual 5 3 Dimension Indoor unit Dimension Mode W H D 9K 790 265 195 12K 920 292 225 18K 1080 330 225...

Page 9: ...Service manual 6 outdoor unit Dimension Mode W H D L1 L2 9K 780 540 250 549 276 12K 760 590 285 530 290 18K 845 695 335 560 335...

Page 10: ...500 420 dB A 40 34 27 40 34 27 Model YDK23 6A YDK23 6A Brand Broad Ocean Broad Ocean Input W 77 77 Capacitor uF 6 5 6 5 Speed r min 910 910 m3 h 1800 1800 dB A 55 55 g 1050 1070 MPa 4 5 4 5 Liquid sid...

Page 11: ...A 44 40 36 44 40 36 Model YDK23 6A YDK23 6A Brand BROAD OCEAN BROAD OCEAN Input W 75 75 Capacitor uF 6 5uF 260V 6 5uF 260V Speed r min 900 900 m3 h 1850 1850 dB A 56 56 g 1330 1350 MPa 4 5 4 5 Liquid...

Page 12: ...00 m3 h 800 730 600 800 730 600 dB A 44 40 36 44 40 36 Model YDK36 6B YDK36 6B Brand WELLING WELLING Input W 85 85 Capacitor uF 2 5uF 450V 2 5uF 450V Speed r min 930 930 m3 h 1900 1900 dB A 56 56 g 13...

Page 13: ...180 1110 m3 h 1080 1020 960 1080 1020 960 dB A 47 44 41 47 44 41 Model YDK53 6KB YDK53 6KB Brand WELLING WELLING Input W 165 165 Capacitor uF 3uF 450V 3uF 450V Speed r min 840 840 m3 h 2500 2500 dB A...

Page 14: ...Service manual 11 5 Refrigerant cycle diagram Cooling only Heat pump mode...

Page 15: ...t from the continuous operation under constant air temperature conditions However excludes the initial pull down stage Heating operation Indoor air temp DB Outdoor unit air temp DB Note The chart is t...

Page 16: ...ODE COMP CAP1 FAN2 CAP2 XTI CT1 RELAY PAR T NAME COMPRE SSOR COMPRE SSOR CAP ACITOR OUTDOO R FAN OUTDOO R FAN CA PACITOR 7 WAY TERMINAL CURREN T INDUCT OR COMPRE SSOR REL AY C N2 C N3 CN4 C N10 CN9 B...

Page 17: ...MPRESSOR COMPRESSOR CAPACITO R OUTDOOR FAN OUTDOOR FAN CAPACIT OR 7 WAY TERMINAL CURRENT INDUCTOR COMPRESSOR RELAY FUSE REVERSING VALVE CN2 C N3 CN4 CN10 CN6 CT 1 BROWN BLU E BLA CK RED R EL AY WHITE...

Page 18: ...CAP1 FAN2 CAP2 XTI CT1 RELAY PAR T NAME COMPRE SSOR COMPRE SSOR CAP ACITOR OUTDOO R FAN OUTDOO R FAN CA PACITOR 7 WAY TERMINAL CURREN T INDUCT OR COMPRE SSOR REL AY C N2 C N3 CN4 C N10 CN9 B ROW N BLU...

Page 19: ...RESSOR COMPRESSOR CAPACITOR OUTDOOR FAN OUTDOOR FAN CAPACITOR 7 WAY TERMINAL CURRENT INDUCTOR COMPRESSOR RELAY FUSE REVERSING VALVE CN2 C N3 CN4 CN10 CN6 CT 1 BROWN BLU E BLA CK RED R EL AY WHITE BLAC...

Page 20: ...FAN2 CAP2 XTI CT1 RELAY PAR T NAME COMPRE SSOR COMPRE SSOR CAP ACITOR OUTDOO R FAN OUTDOO R FAN CA PACITOR 7 WAY TERMINAL CURREN T INDUCT OR COMPRE SSOR REL AY C N2 C N3 CN4 C N10 CN9 B ROW N BLU E B...

Page 21: ...NAME COMPRESSOR COMPRESSOR CAPACITO R OUTDOOR FAN OUTDOOR FAN CAPACIT OR 7 WAY TERMINAL CURRENT INDUCTOR COMPRESSOR RELAY FUSE REVERSING VALVE CN2 CN 3 C N4 CN10 C N6 BROWN BLUE B LA CK R ED R ELAY W...

Page 22: ...ORS XS 2 X P2 C N4 CN8 ANION GENERATOR CN11 G Y G ON SOME MODELS G G 8 2 5 5 10 5 4 8 Outdoor unit CODE UNIT1 COMP CAP1 FAN2 CAP2 XT1 XT2 KM1 CT TRANS1 CN1 CN11 PART NAME OUTDOOR CONTRO L PCB COMPRESS...

Page 23: ...ODELS G G 8 2 5 5 10 5 4 8 Outdoor unit CODE UNIT1 COMP CAP1 FAN2 CAP2 XT1 XT2 VALVE XP1 XS1 RT3 KM1 CT TRANS1 CN1 CN11 PART NAME OUTDOOR CONTRO L PCB COMPRESSOR COMPRESSOR CAP ACITOR OUTDOOR FAN OUTD...

Page 24: ...cording to the following specifications sheet Amp 10 15 20 mm2 1 0 1 5 2 5 Grade 8 3 Pipe length and the elevation Standard length Max Max Additional m Elevation Elevation refrigerant Btu h GAS LIQUID...

Page 25: ...torque wrenches wrench to hold the joints and gas leak detector Note The air in the indoor unit and in the piping must be purged If air remains in the refrigeration piping it will affect the compresso...

Page 26: ...wait for one minute 7 Use torque wrench to tighten the service port cap to a torque of 1 8 kg m 18n m 8 Set the 3 way valve to the opened position 9 Mounted the valve stem nuts to the 2 way and 3 way...

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: ...inutes repeat 3 times 6 After purging the air use a torque wrench to tighten the flare nut to on the 2 way valve 7 Check the gas leakage 8 Check the flare connections for gas leakage 9 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: ...temperature TE3 Anti cold wind from Setting Fan Speed to Breeze temperature TE4 Anti cold wind from Breeze to Fan Off temperature TE5 Evaporator low temperature protection entering temperature TE6 Eva...

Page 33: ...tion 9 4 3 Fan Speed is out of control When Indoor Fan Speed is too high higher than High Fan 300RPM or too low lower than 400RPM the unit stops and LED displays failure information and can t returns...

Page 34: ...g mode The 4 way valve is closed at cooling mode The action of the compressor and the outdoor fan T indoor temperature Auto fan at cooling mode Anti freezing control to indoor evaporator at cooling mo...

Page 35: ...elay in dehumidifying mode 9 8 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 9 8 3 Action of compr...

Page 36: ...mp The louver opens to Standard Angle ANGLHEAT when power is on for the first time 9 9 Defrosting mode available for heating mode 9 9 1 Defrosting condition Defrost starts when either of the following...

Page 37: ...to the temperature difference between room temperature TA and set temperature TS 9 10 2 The indoor fan blows automatically in corresponding selected mode 9 10 3 The motion of indoor fan s blade should...

Page 38: ...force cooling and forced auto mode It transfer between these two modes by pressing the buttons the cycling order of the button press is as below graph show to you 9 12 Sleep mode Economic mode 9 12 1...

Page 39: ...esetting speed when one of following condition occur a mode changed b get into Force Cooling mode c turn off the air conditioner 9 14 4 Sleep mode is not available in this mode 9 15 Ionizer air clean...

Page 40: ...anual 37 minutes the buzzer keep quiet at this time 9 16 3 When the indoor unit have not received the corrected signal for 7 minutes this function will be shut down The air conditioner is working in c...

Page 41: ...1270 CSPEEDH 1250 1270 1270 CSPEEDM 1000 1100 1100 CSPEEDL 800 1000 1000 CSPEEDS 700 900 900 TE1 31 31 31 TE2 34 33 33 TE3 30 27 27 TE4 22 20 20 TE5 4 5 5 TE6 10 12 12 TE7 60 62 62 TE8 54 54 54 TE9 4...

Page 42: ...00H AngleDefL 00H AngleDefH 00H AngleMotorOn 39H AngleStep 25H AngleLouver 00H AngleTime 05H IResume 92H I5min C4H I3sec D0H IOFan A3H Idefrost 00H TE1 28H TE2 2FH TE3 2DH TE4 23H TE5 11H TE6 1BH TE7...

Page 43: ...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 44: ...rature sensor is open circuit or short circuit illumine alternately r Extinguish Flash at 5Hz For 18K Failure phenomenon Operation lamp Timer lamp Defrosting lamp Auto lamp Over current protection of...

Page 45: ...ck if AC 12V and AC 35V 5 exist at second coil of transformer in the outdoor PCB Outdoor PCB is defective Yes Yes No Take off the secondary plug of transformer and then check if AC 12V and AC 35V 5 ex...

Page 46: ...mary coil of outdoor and indoor transformer Check if AC 12V exist at second coil of outdoor and indoor transformer Outdoor or indoor PCB is defective Yes Yes No Take off the secondary plug of transfor...

Page 47: ...cally entering to the status when power is on The reason is that the instantaneous voltage of main chip is less than 4 5V Check according to the following procedure 11 5 Indoor fan speed out of contro...

Page 48: ...cluding the indoor room indoor evaporator and outdoor condenser temperature sensor 11 7 Over current protection of the compressor occurs 4 times 11 8 EEROM error EEROM error indoor PCB is defective Ov...

Page 49: ...eck if the error is still exit Connect the signal wire well or change the signal wire if it s the problem of the wires No Yes Indoor PCB failure No Outdoor PCB failure change outdoor PCB Yes Check if...

Page 50: ...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...