Midea 11DSNA-A-1301 Service Manual
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Midea 11DSNA-A-1301 Service Manual

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NEOLA INVERTER SERIES
Service Manual 2013
11DSNA-A-1301

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Summary of Contents for Midea 11DSNA-A-1301

  • Page 1 NEOLA INVERTER SERIES Service Manual 2013 11DSNA-A-1301...

  • Page 2: Table Of Contents

    CONTENTS 1. Precaution .............................. 1 1.1 Safety Precaution .......................... 1 1.2 Warning ............................1 2. Function ..............................6 3. Dimension .............................. 8 3.1 Indoor Units ........................... 8 3.2 Outdoor Units ..........................10 4. Refrigerant Cycle Diagram ........................12 5. Wiring Diagram .............................14 5.1 Indoor Units ..........................

  • Page 3: Precaution

    1. Precaution 1.1 Safety Precaution  To prevent injury to the user or other people and property damage, the following instructions must be followed.  Incorrect operation due to ignoring instruction will cause harm or damage.  Before service unit, be sure to read this service manual at first. 1.2 Warning ...
  • Page 4 condenser and evaporator.  For installation, always contact the dealer or an Authorized service center. There is risk of fire, electric shock, explosion, or injury.  Do not install the product on a defective installation stand. It may cause injury, accident, or damage to the product. ...
  • Page 5 There is risk of explosion or fire.  If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire.  Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives.
  • Page 6 It can avoid vibration of water leakage.  Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors.  Use two or more people to lift and transport the product. Avoid personal injury.
  • Page 7 operated. There are sharp and moving parts that could cause personal injury.  Do not drink the water drained from the product. It is not sanitary could cause serious health issues.  Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.

  • Page 8: Function

    2. Function Model Names of Indoor/Outdoor Units Series Capacity Indoor units Outdoor units MS11D-09HRDN1-MN5W MOA-09HDN1-MN5W MS11D-09CRDN1-MN5W MOA-09CDN1-MN5W MS11D-09CRDN1-BN10W MOR-09CDN1-BN10W MS11D-09HRDN1-BN10W MOR-09HDN1-BN10W MS11D-12CRDN1-MN10W MOB-12CDN1-MN10W MS11D-12HRDN1-MN10W MOB-12HDN1-MN10W Inverter MS11D-12CRDN1-BN10W MOR-12CDN1-BN10W MS11D-12HRDN1-BN10W MOR-12HDN1-BN10W MS11D-18CRDN1-MN10W MOC-18CDN1-MN10W MS11D-18HRDN1-MN10W MOC-18HDN1-MN5W MS11D-22CRDN1-MN10W MOF-22CDN1-MN5W MS11D-22HRDN1-MN10W MOF-22HDN1-MN5W...
  • Page 9 Filter Killer Of Formaldehyde Louver Position Memory Function Ionizer(O) Silver Ico Filter(O) Refrigerant Leakage Detect Vitamin C Filter(O) Self-diag. Function 3M HAM Filter(O) ydrophilic Aluminum Fin Bio Filter(O) Anti-rust Cabinet Golden Fin(O) Valve Protection Cover Self Clean(O) PTC Heating Belt(O) Follow Me(O) Compressor Crankcase Heater(O) O: optional function...

  • Page 10: Dimension

    3. Dimension 3.1 Indoor Units Model MS11D-09HRDN1-MN5W MS11D-09CRDN1-BN10W MS11D-09HRDN1-BN10W MS11D-09CRDN1-MN5W MS11D-12CRDN1-MN10W MS11D-12HRDN1-MN10W MS11D-12CRDN1-BN10W MS11D-12HRDN1-BN10W MS11D-18CRDN1-MN10W MS11D-18HRDN1-MN10W MS11D-22CRDN1-MN10W 1030 MS11D-22HRDN1-MN10W...
  • Page 11 Model R(mm) L(mm) H(mm) Dimension of installation hole(mm) MS11D-09HRDN1-MN5W MS11D-09CRDN1-BN10W MS11D-09HRDN1-BN10W MS11D-09CRDN1-MN5W MS11D-12CRDN1-MN10W ￠65 MS11D-12HRDN1-MN10W MS11D-12CRDN1-BN10W MS11D-12HRDN1-BN10W MS11D-18CRDN1-MN10W MS11D-18HRDN1-MN10W Model R(mm) L(mm) H(mm) Dimension of installation hole(mm) MS11D-22CRDN1-MN10W ￠65 MS11D-22HRDN1-MN10W...

  • Page 12: Outdoor Units

    3.2 Outdoor Units More than 30cm More than 60cm (Service space More than 30cm More than 60cm More than 70cm Model MOA-09HDN1-MN5W MOR-09CDN1-BN10W MOR-09HDN1-BN10W MOA-09CDN1-MN5W MOR-12CDN1-BN10W MOR-12HDN1-BN10W MOB-12CDN1-MN10W MOB-12HDN1-MN10W MOC-18CDN1-MN10W...
  • Page 13 MOC-18HDN1-MN5W MOF-22CDN1-MN5W MOF-22HDN1-MN5W...

  • Page 14: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram For cooling only models: INDOOR OUTDOOR LIQUID SIDE CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) GAS SIDE COMPRESSOR...
  • Page 15 For heat pump models: INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) GAS SIDE REVERSING VALVE 3-WAY VALVE (Heating Model only) ACCUMULATOR COOLING COMPRESSOR HEATING...

  • Page 16: Wiring Diagram

    5. Wiring Diagram 5.1 Indoor Units MS11D-09CRDN1-MN5W , MS11D-09HRDN1-MN5W, MS11D-12CRDN1-MN10W, MS11D-12HRDN1-MN10W...
  • Page 17 MS11D-09CRDN1-BN10W, MS11D-09HRDN1-BN10W, MS11D-12CRDN1-BN10W, MS11D-12HRDN1-BN10W MS11D-18CRDN1-MN10W, MS11D-18HRDN1-MN10W...
  • Page 18 MS11D-22CRDN1-MN10W, MS11D-22HRDN1-MN10W...
  • Page 19 5.2 Outdoor Units MOA-09CDN1-MN5W , MOB-12CDN1-MN10W, MOB-12HDN1-MN10W MOR-09CDN1-BN10W, MOR-09HDN1-BN10W, MOR-12CDN1-BN10W, MOR-12HDN1-BN10W...
  • Page 20 MOC-18CDN1-MN10W, MOC-18HDN1-MN5W...
  • Page 21 MOF-22CDN1-MN5W, MOF-22HDN1-MN5W...

  • Page 22: Installation Details

    6. Installation details 6.1 Wrench torque sheet for installation Additional Outside diameter Torque tightening torque inch N.cm N.cm 1500 1600 Ф6.35 (153kgf.cm) (163kgf.cm) 2500 2600 Ф9.52 (255kgf.cm) (265kgf.cm) 3500 3600 Ф12.7 (357kgf.cm) (367kgf.cm) 6.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Rated current of appliance Nominal cross-sectional area (mm²) >3 and ≤6...

  • Page 23: Pipe Length And The Elevation

    6.3 Pipe length and the elevation The pipe length and refrigerant amount: Pipe size Standard Max. Max. Additional Model length Elevation Length refrigerant B (m) A (m) (g/m) Liquid 3/8’’ 1/4’’ MS11D-09HRDN1-MN5W+MOA-09HDN1-MN5W (Ф9.52) (Ф6.35) 3/8’’ 1/4’’ MS11D-09CRDN1-MN5W+ MOA-09CDN1-MN5W (Ф9.52) (Ф6.35) 3/8’’...

  • Page 24: Installation For The First Time

    6.4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below: ● Pressure in the system rises. ● Operating current rises. ● Cooling or heating efficiency drops. ● Moisture in the refrigerant circuit may freeze and block capillary tubing. ●...
  • Page 25 the meter does not indicate -0.1Mpa after pumping 30 minutes, it should be pumped 20 minutes more. If the pressure can’t achieve -0.1Mpa after pumping 50 minutes, please check if there are some leakage points. Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump. Confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump).
  • Page 26 Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2-way valve approximately 45’ until the gauge indicates 0.3 to 0.5 Mpa. 6). Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position.

  • Page 27: Adding The Refrigerant After Running The System For Many Years

    6).When the electronic scale displays the proper weight (refer to the table), disconnect the charge hose from the 3-way valve’s service port immediately and turn off the air conditioner before disconnecting the hose. 7). Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N.m.

  • Page 28: Re-Installation While The Indoor Unit Need To Be Repaired

    6).When the electronic scale 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 disconnecting the hose. 7).
  • Page 29 5). Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1MPa. 6). Set the 3-way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0.3 to 0.5Mpa. Disconnect the charge set, and tighten the 2-way and 3-way valve’s stem nuts.

  • Page 30: Re-Installation While The Outdoor Unit Need To Be Repaired

    Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2-way valve approximately 45’ until the gauge indicates 0.3 to 0.5 Mpa. 6). Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems.
  • Page 31 2. Refrigerant charging Electronic scale Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.
  • Page 32 Use torque wrench to tighten the service port cap to a torque of 18N.m. Be sure to check for gas leakage...

  • Page 33: Operation Characteristics

    7. Operation characteristics Temperature Cooling operation Heating operation Drying operation Mode Room temperature ≥17℃(62℉) ≤30℃(86℉) ＞10℃(50℉) 0℃～50℃ (32℉～122℉) -15℃～30℃ 0℃～50℃ Outdoor temperature -15℃～50℃(5℉～122℉) (5℉～86℉) (32℉～122℉) (For the models with low temperature cooling system) CAUTION: 1. If air conditioner is used outside of the above conditions, certain safety protection features may come into operation and cause the unit to function abnormally.

  • Page 34: Electronic Function

    8. Electronic function 8.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger 8.2 Display function 8.2.1 Icon explanation on indoor display board. One of the following figures matches its display board . Run indicator Flash at 0.5Hz when the unit is standby. Illuminate when the unit is turned on . Timer indicator This indicator illuminates when TIMER is set ON/OFF.

  • Page 35: Main Protection

    8.3 Main Protection 8.3.1 Three Minutes Delay at restart for compressor 1 minute delay for the 1 time start-up and 3 minutes delay for others. 8.3.2 Temperature protection of compressor top The unit will stop working when the compressor top temp. protector cut off, and will restart after the compressor top temp.

  • Page 36: Operation Modes And Functions

    If T4＞5℃ or the compressor starts running, the preheating function will stop. 8.3.8 Zero crossing detection error protection If AC detects time interval is not correct for continuous 240s, the unit will stop and the LED will display the failure. The correct zero crossing signal time interval should be between 6-13ms. 8.4 Operation Modes and Functions 8.4.1 Fan mode (1) Outdoor fan and compressor stop.
  • Page 37 8.4.2 Cooling Mode 8.4.2.1 Compressor running rules The maximum operation frequency of compressor after starting submits to following rule. Fmax=F4 Fmax=F7 Fmax=F8 31.5 29.5 Fmax=F6 Fmax=F3 If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7 minutes according to the outdoor ambient temp.
  • Page 38 F: Keep the current frequency. G: Decrease the frequency to the lower level until to F1. H: Run at F1 for 1h.(if T1-Ts<-2℃, the compressor will stop) Meanwhile, the compressor running frequency is limited by the current. I3COOL Decrease I2COOL Hold I1COOL Resume...
  • Page 39 High Medium 8.4.2.4 Condenser temperature protection ---55℃<T3<60℃, the compressor frequency will decrease to the lower level until to F1 and then runs at F1.If T3<54℃, the compressor will keep running at the current frequency. ---T3<52℃, the compressor will not limit the frequency and resume to the former frequency. ---T3>60℃...
  • Page 40 8.4.3 Heating Mode 8.4.3.1 Compressor running rules The maximum operation frequency of the compressor after starting submits to the following rule. Fmax=F2 Fmax=F3 Fmax=F4 Fmax=F5 Fmax=F6 Fmax=F7 Fmax=F8 Fmax=F9 Fmax=F10 If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp.
  • Page 41 +5.0 +4.5 +3.5 +3.0 +2.5 +2.0 +1.5 +1.0 +0.5 While the zones of A,B,C... are corresponding to different compressor running frequency. ΔT=0℃ as default. Note: When T1-Ts keeps in the same temp. zone for 3 minutes, the compressor will run as the below rules: A~E: Increase the frequency to the higher level until to F10.
  • Page 42 Hold: Keep the current frequency. Resume: No limitation for frequency. Note: When AC is in “hold” zone for 3 minutes, the compressor frequency will rise to the higher level. (The frequency will increase twice at most) 8.4.3.2 Outdoor fan running rules High 8.4.3.3 Indoor fan running rules Setting...
  • Page 43 Indoor fan speed can be set as high, medium, low or auto fan and the anti-cold-wind function is preferential. Auto fan action in heating mode: Medium High 8.4.3.4 Defrosting mode Condition of defrosting: ----T4＞0℃, When the units are running, if the following two items are satisfied, the units start defrosting: The units run with T3＜3℃...
  • Page 44 Defrosting action： For 9k,12k models: Frequency F2 FrequencyF8 Compressor 4-way valve Outdoor fan Indoor fan Indoor fan breeze(10s) no longer than 10m XX=60.
  • Page 45 For 18k,22k models: Frequency F2 Frequency F8 Compressor 4-way valve Outdoor fan Indoor fan Indoor fan breeze(10s) no longer than 10m XX=60 for 18k model, XX=90 for 22k model.
  • Page 46 8.4.3.5 Evaporator coil temperature protection ----T2> TEH2℃, the compressor running frequency decreases to the lower level and runs for 20s. When the frequency decreases to F2 and the T2 is still over TEH2℃ for 3 minutes, the compressor will stop. ----T2<48℃...
  • Page 47 8.4.5.3 Low indoor room temperature protection In drying mode, if room temperature is lower than 10℃, the compressor will stop and not resume until room temperature exceeds 12℃. 8.4.5.4 Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode. 8.4.5.5 The outdoor fan operates the same as in cooling mode.
  • Page 48 8.4.7.3 Timer off. The machine will turn off automatically when reaching the setting time. 8.4.7.4 Timer on/off. The machine will turn on automatically when reaching the setting “on” time, and then turn off automatically when reaching the setting “off” time. 8.4.7.5 Timer off/on.
  • Page 49 8.4.10 8℃ Heating(optional) In heating operation, the preset temperature of the air conditioner can be as lower as 8℃, which keeps the room temperature steady at 8℃ and prevents household things freezing when the house is unoccupied for a long time in severe cold weather. 8.4.11 Louver Position Memory Function When starting the unit again after shutting down, its louver will restore to the angle originally set by the user, but the precondition is that the angle must be within the allowable range, if it exceeds, it will...

  • Page 50: Troubleshooting

    9. Troubleshooting 9.1 Indoor Unit Error Display Display Operation lamp flash times Timer lamp Failure EEPROM error Indoor and outdoor communication error Zero crossing detection error Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or short circuit Evaporator coil temperature sensor T2 open circuit or short circuit...

  • Page 51: Diagnosis And Solution

    9.2 Diagnosis and Solution 9.2.1 EEPROM parameter error diagnosis and solution(E0/F4) EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
  • Page 52 9.2.2 Indoor / outdoor unit’s communication error diagnosis and solution(E1)
  • Page 53 9.2.3 Zero crossing detection error diagnosis and solution(E2) 9.2.4 Indoor fan speed has been out of control diagnosis and solution(E3)
  • Page 54 Index 1: 1.Indoor AC Fan Motor Measure the resistance value of each winding by using the tester. Index2: 1: Indoor AC Fan Motor Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2.
  • Page 55 9.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E4/E5/F1/F2/F3)
  • Page 56 9.2.5 IPM malfunction or IGBT over-strong current diagnosis and solution(P0)
  • Page 57 9.2.6 Over voltage or too low voltage protection diagnosis and solution(P1)
  • Page 58 9.2.7 High temperature protection of compressor top diagnosis and solution(P2)
  • Page 59 9.2.8 Inverter compressor drive error diagnosis and solution(P4)
  • Page 60 9.2.9 Refrigerant Leakage Detection diagnosis and solution(EC) Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? Check if T2 sensor is well Is there cool air blowing fixed. Correct the installation or replace T2 sensor.
  • Page 61 Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.
  • Page 62 Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter. Table1:Some frequently-used R-T data for T1,T2,T3 and T4 sensor: Temperature (℃) Resistance Value (KΩ) 26.9...
  • Page 63 Spec. Code 2T0032300786 2T0032300703 2T0032300704 2T0032300810 Indoor code 220032308400 220032307640 220032307650 220032308640 MS11D-09HRDN1-M MS11D-09HRDN1-Q MS11D-09HRDN1-QC MS11D-09CRDN1-BN Indoor 2(B) Outdoor code 220037305940 220037304920 220037304990 220037306090 MOR-09CDN1-BN10 Outdoor MOA-09HDN1-MN5W MOR2-09HDN1-QC2 MOA2-09HDN1-QC2 Compressor DA108X1C-23EZ DA108X1C-23EZ DA108X1C-23EZ DA108X1C-23EZ Indoor fan motor RPG13B RPG13H RPG13H RPG15A Outdoor fan YDK24-6KB...
  • Page 64 Outdoor code 220037306370 Outdoor MOA-09CDN1-MN5W Compressor DA108X1C-23EZ Indoor fan motor RPG13B Outdoor fan YDK24-6KB motor...
  • Page 65 Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value DA108X1C-23EZ DA130M1C-31FZ DA130S1C-20FZ DA150S1C-20FZ Blue - Red 0.95Ω 0.95Ω 0.95Ω 1.1Ω (20℃) (20℃) (20℃) Blue - Black (20℃) Red - Blue...
  • Page 66 3.IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Normal resistance Digital tester value (+)Red (-)Black ∞...

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