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DM16-01.01.25en

Floor Standing MFM

Service manual

Refrigerant cycle diagram

MOF‐24HN1‐QB8

INDOOR

OUTDOOR

LIQUID SIDE

GAS SIDE

HEAT
EXCHANGE
(EVAPORATOR)

HEAT
EXCHANGE
(CONDENSER)

COMPRESSOR

2-WAY VALVE

3-WAY VALVE

CHECK VALVE
(Heating Model only)

CAPILIARY TUBE

4-WAY VALVE

(Heating Model only)

COOLING

HEATING

T2 Evaporator
temp. sensor

T1 Room temp.
sensor

T3 Condenser
temp. sensor

Содержание MFM-24ARN1-Q

Страница 1: ...SERVICE MANUAL MIDEA AIRCONDITIONER FLOOR STANDING TYPE Model MFM 24ARN1 Q MOF 24HN1 QB8 MFM 48ARN1 R MOU 48HN1 RB6W MFM 60ARN1 R MOUL 60HN1 R DM16 01 01 25en...

Страница 2: ...CONTENTS 1 Safety Precautions 3 2 Specifications 5 3 Dimension 7 4 Refrigerant cycle diagram 9 5 Wiring diagram 11 6 Installation details 14 7 External view and display 33 8 Operation characteristics...

Страница 3: ...rn the breaker off or disconnect the power supply cable as soon as possible When the product is soaked flooded or submerged contact an Authorized service center Be caution that water could not enter t...

Страница 4: ...rated Do not drink the water drained from the product Use a firm stool or ladder when cleaning or maintaining the product Replace the all batteries in the remote control with new ones of the same type...

Страница 5: ...nd GMCC PANASONIC PANASONIC Capacity Btu h 24771 24959 48109 55957 69264 Input W 2430 2600 4750 5750 6750 Rated current RLA A 11 65 12 6 8 22 9 77 9 84 Locked rotor Amp LRA A 66 66 67 Thermal protecto...

Страница 6: ...e f Coil length x height x width mm 770x660x38 1 837x1100x38 1 837x1100x38 1 g Number of circuits 4 8 8 Outdoor noise level dB A 60 64 64 Outdoor unit Dimension W D H mm 845x320x700 900x350x1170 900x3...

Страница 7: ...DM16 01 01 25en Floor Standing MFM 7 Service manual 3 Dimension 3 1 Indoor Unit H W D Dimension Mode W mm D mm H mm MFM 24ARN1 Q 500 315 1700 MFM 48ARN1 R 550 418 1824 MFM 60ARN1 R 600 455 1934...

Страница 8: ...vice manual 8 3 2 Outdoor Unit Dimension Mode W mm D mm H mm W1 mm A mm B mm MOF 24HN1 QB8 845 320 700 908 560 335 Dimension Mode W mm D mm H mm W1 mm A mm B mm MOU 48HN1 RB6W 900 350 1170 985 590 378...

Страница 9: ...QB8 INDOOR OUTDOOR LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR 2 WAY VALVE 3 WAY VALVE CHECK VALVE Heating Model only CAPILIARY TUBE 4 WAY VALVE Heating Model onl...

Страница 10: ...HANGE CONDENSER Compressor 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor T3 Condenser temp sensor T5 Discharge temp sensor T4 Ambient temp sensor IN...

Страница 11: ...DM16 01 01 25en Floor Standing MFM 11 Service manual 5 Wiring diagram 5 1 MFM 24ARN1 Q Indoor unit Outdoor unit MOF 24HN1 QB8...

Страница 12: ...Floor Standing MFM DM16 01 01 25en Service manual 12 5 2 MFM 48ARN1 R Indoor unit Outdoor unit MOU 48HN1 RB6W...

Страница 13: ...DM16 01 01 25en Floor Standing MFM 13 Service manual 5 3 MFM 60ARN1 R Indoor unit Outdoor unit MOUL 60HN1 R...

Страница 14: ...Unit 6 1 2 1 Before installing the outdoor unit you should a Select a place where no direct sunlight or other heat radioactivity may reach A sunshade is needed if it is unavoidable b Select a place th...

Страница 15: ...DM16 01 01 25en Floor Standing MFM 15 Service manual 6 1 2 3 Reserve enough space for installation maintenance and unit functioning Remove as many obstacles as possible nearby...

Страница 16: ...g 2 Dismounting the air inlet grid Please take off the air inlet grid before connecting the pipes wires The grid is hitched by a loop inside To dismount the air inlet grid hold both sides of the grid...

Страница 17: ...d 3 Do not make the angle of inclination more than 45 degrees while shipping Avoid horizontal storage 4 Be sure the electric insulation work is well done if installed on metal ceiling wall 5 Fix the u...

Страница 18: ...ength and maximum allowance length is base of reliability Oil trap should be installed per 5 7 meters 6 3 2 Piping connection 6 3 2 1 Connecting Of Refrigerant Pipe a Only the correctly installing of...

Страница 19: ...ke sure no gas from connections with leak detector or soap water Caution A Lo packed valve B Hi packed valve C and D are ends of indoor unit connection Caution in Handling the Packed Valve a Open the...

Страница 20: ...een drained 6 3 2 3 To make the refrigerant pipe unblocked completely You should keep the cut off valves of the outdoor unit completely open after you have finished the above steps 5 3 2 1 or 5 3 2 2...

Страница 21: ...es have leakage 1 Air purging with vacuum pump 1 Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect...

Страница 22: ...s a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve 2 Air purgi...

Страница 23: ...ice port cap to a torque 18N m Be sure to check the gas leakage 3 Adding the refrigerant if the pipe length 5m Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the...

Страница 24: ...Be sure to check for gas leakage 6 3 4 Adding the refrigerant after running the system for many years Procedure 1 Connect the charge hose to the 3 way service port open the 2 way valve and the 3 way...

Страница 25: ...displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disco...

Страница 26: ...o to the 3 way valves gas service port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickl...

Страница 27: ...eat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close...

Страница 28: ...ves are set to the opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Lo...

Страница 29: ...Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a ti...

Страница 30: ...ain Pipe with the Drain Pipe then fix it with band 4 If you have to connect the Drain Pipe indoors to avoid condensing caused by air intake you must cover the pipe with heat insulation material polyet...

Страница 31: ...ir conditioner is different according to the models Please refer to the WIRING DIAGRAM pasted on the indoor and outdoor units before wire connection Model Power supply Input Rated Amp Switch Fuse Powe...

Страница 32: ...not lift the panel any further when it stops with a click sound 2 Press the manual switch button twice until the operation indicator lights the unit will operate on manual cool mode 3 Check if all th...

Страница 33: ...and display 7 1 External view This unit consists of indoor unit and outdoor unit Note All the pictures in this manual are for explanation purpose only They may be slightly different from the air cond...

Страница 34: ...Floor Standing MFM DM16 01 01 25en Service manual 34 7 2 Control Panel Control Buttons and Functions...

Страница 35: ...de of the above conditions certain safety protection features may come into operation and cause the unit to function abnormally 2 Room relative humidity less than 80 If the air conditioner operates in...

Страница 36: ...he compressor stops automatically 9 2 2 Sensor protection at open circuit and breaking disconnection 9 2 3 Phase check function If the phase sequence is detected wrong or lack of 1 or 2 phase the unit...

Страница 37: ...e of outdoor heat exchanger coil T3 is below 3 C reaches to 60 minutes then consecutive 3 minutes less than 4 degrees Just for the AC is turn on whether or not the heating mode the temperature was det...

Страница 38: ...nds 3 Temperature of outdoor coil T3 is up to 15 C 9 3 1 5 High evaporator coil temp T2 protection 9 3 2 Cooling Mode 9 3 2 1 Four way valve is closed If four way valve is open before the machine ente...

Страница 39: ...fan models Fan below When compressor is on the outdoor fan runs all the time Fan above T3 On Off 9 3 2 3 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be sele...

Страница 40: ...tart up Condition 2 TE6 T2 On Off TE5 2 When the evaporator coil temp T2 keeps lower than TE5 2 for 20 minutes the compressor and outdoor fan will shut off When T2 is higher than TE6 the compressor an...

Страница 41: ...rature is 24 C 9 3 4 2 When entering auto mode the heating fan only or cooling operation will be automatically chosen according to the room temperature T1 and the set temperature Ts T1 Ts Cooling Heat...

Страница 42: ...tting time is relative time 9 4 3 Economy function 9 4 3 1 It is valid in cooling heating and auto mode 9 4 3 2 Turning off changing mode or setting fan speed will cancel economy function 9 4 3 3 Oper...

Страница 43: ...p models For other models Codes Contents P4 Temperature protection of indoor evaporator P5 Temperature protection of outdoor condenser P7 Temperature protection of compressor discharge P9 Anti cold wi...

Страница 44: ...se sequence error Off Flash Flash Communication malfunction between indoor unit and outdoor unit Off Off On Open or short circuit of T3 temperature sensor Flash Off Off Open or short circuit of T4 tem...

Страница 45: ...ange the batteries Air conditioner does not cool or heat well The temperature setting is too high or too low Set a more comfortable temperature The air filter is clogged with dust Clean the filter The...

Страница 46: ...Floor Standing MFM DM16 01 01 25en Service manual 46 10 2 1 Open or short circuit of temperature sensor T1 T2 T3 T4 10 2 2 Open or short circuit of temperature sensor T5...

Страница 47: ...47 Service manual 10 2 3 Default phase of compressor 10 2 4 Phase sequence error Phase sequence error Change the order of the wires to power supply Switch on the unit again If the problem cannot be s...

Страница 48: ...perature protection of condenser Check the resistance of the temp sensor according to Appendix 1 is it normal Possible reason 1 Air or other gas in the refrigerant 2 Heat exchanger is dirty 3 Outdoor...

Страница 49: ...tdoor ambient temp is low 2 The wires are loose to the temp sensor 3 The temp sensor is defective 4 The evaporator or the filter is dirty 5 System has block Low pressure protection Possible reason 1 T...

Страница 50: ...Floor Standing MFM DM16 01 01 25en Service manual 50 10 2 9 Overload of current 1...

Страница 51: ...DM16 01 01 25en Floor Standing MFM 51 Service manual 10 2 10 Communication malfunction between indoor unit and outdoor unit...

Страница 52: ...Floor Standing MFM DM16 01 01 25en Service manual 52 10 2 11 Refrigerant Leakage Detection...

Страница 53: ...DM16 01 01 25en Floor Standing MFM 53 Service manual 10 2 12 Temperature protection of compressor discharge...

Страница 54: ...36 6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 1...

Страница 55: ...2 489 5 234 9 35 35 78 75 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29...

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