Midea MSV1-09HRDN1-QC2A Service Manual
  1. Manuals
  2. Brands
  3. Midea Manuals
  4. Air Conditioner
  5. MSV1-09HRDN1-QC2A
  6. Service manual

Midea MSV1-09HRDN1-QC2A Service Manual

Air conditioner dc inverter split wall-mounted type
Hide thumbs
Table of Contents

Advertisement

Quick Links

SERVICE MANUAL

MIDEA AIRCONDITIONER
DC INVERTER
SPLIT WALL-MOUNTED TYPE
MSV1-09HRDN1-QC2(A)
MSV1-12HRDN1-QC2(A)
V1.2
Oct, 2007

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MSV1-09HRDN1-QC2A and is the answer not in the manual?

Questions and answers

Related Manuals for Midea MSV1-09HRDN1-QC2A

Summary of Contents for Midea MSV1-09HRDN1-QC2A

  • Page 1: Service Manual

    SERVICE MANUAL MIDEA AIRCONDITIONER DC INVERTER SPLIT WALL-MOUNTED TYPE MSV1-09HRDN1-QC2(A) MSV1-12HRDN1-QC2(A) V1.2 Oct, 2007...

  • Page 2: Table Of Contents

    CONTENTS 1. Precaution..............................1 1.1 Safety Precaution ..............................1 1.2 Warning ................................1 2. Function ..............................4 3. Dimension..............................6 3.1 Indoor Unit................................6 MSV1-09HRDN1-QC2(A) MSV1-12HRDN1-QC2(A) .................. 6 3.2 Outdoor Unit ................................ 7 MOC-09HDN1-QC2 MOC-12HDN1-QC2 .................... 7 4. Specification ............................. 8 5.
  • Page 3 9.13 Sleep function mode............................28 9.14 Auto-Restart function............................28 9.15 Automatic panel function……………………………………………………………………………………………….29 9.16 Ionizer (Clean air) function……………………………………………………………………………………………..29 9.17 Self-clean function………………………………………………………………………………………………………29 9.18 Follow me function………………………………………………………………………………………………………29 9.19 Outdoor chassis heating cable function (optional)…………………………………………………………………...30 10. Troubleshooting ........................... 31 10.1 Indoor Unit Error Display ..........................32 10.2 Diagnosis and Solution............................

  • Page 4: Precaution

    1. Precaution installation stand. 1.1 Safety Precaution It may cause injury, accident, or damage to the To prevent injury to the user or other people product. and property damage, the following instructions Be sure the installation area does not must be followed. deteriorate with age.
  • Page 5 It may cause corrosion on the product. Corrosion, arrives. particularly on the condenser and evaporator fins, There is risk of property damage, failure of product, could cause product malfunction or inefficient or electric shock. operation. Do not open the inlet grill of the product during operation.
  • Page 6 your skin or clothes, wash it well with clean The chemical in batteries could cause burns or other health hazards water. Do not use the remote of the batteries have leaked.

  • Page 7: Function

    2. Function Indoor unit Operation by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance with the setting temperature. Anti-freezing control in cooling Ionizer Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode Self-clean Time Delay Safety control...
  • Page 8 Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation.

  • Page 9: Dimension

    3. Dimension 3.1 Indoor Unit MSV1-09HRDN1-QC2(A) MSV1-12HRDN1-QC2(A)

  • Page 10: Outdoor Unit

    3.2 Outdoor Unit MOC-09HDN1-QC2 MOC-12HDN1-QC2...

  • Page 11: Specification

    4. Specification Indoor MSV1-09HRDN1-QC2(A) MSV1-12HRDN1-QC2(A) Outdoor MOC-09HDN1-QC2 MOC-12HDN1-QC2 Power supply Ph-V-Hz 1,220-240V~,50Hz 1, 220-240V~, 50Hz Capacity Btu/h 9000(3100~11200) 12000(4000~13800) Input 790(230~1080) 1080(350~1400) Cooling Rated current 3.6(1.2~5.2) 4.9(1.7~6.5) Btu/w.h, w/w 11.4, 3.34 11.1, 3.26 Capacity Btu/h 10000(3200~13000) 13000(4100~14500) Input 810(240~1320) 1050(360~1420) Heating Rated current 3.7(1.2~6.0)

  • Page 12: Refrigerant Cycle Diagram

    5. Refrigerant cycle diagram...

  • Page 13: Wiring Diagram

    6. Wiring diagram 6.1 Indoor Unit MSV1-09HRDN1-QC2(A) MSV1-12HRDN1-QC2(A)

  • Page 14: Outdoor Unit

    6.2 Outdoor Unit MOC-09HDN1-QC2 MOC-12HDN1-QC2...

  • Page 15: Installation Details

    7. Installation details 7.1 Wrench torque sheet for installation Outside diameter Torque inch Kgf.m Ф6.35 Ф9.52 Ф12.7 7.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit 7.3 Pipe length and the elevation Standard Max.
  • Page 16 Be sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents the gas leakage from the refrigeration cycle. Procedure 1. Recheck the piping connections. Caution: 2. Open the valve stem of the 2-way valve If gas leakage is discovered in step (3) above, take counterclockwise approximately 90’, wait 10 the following measures.

  • Page 17: Pumping Down (Re-Installation)

    7.5 Pumping down (Re-installation) Procedure 1. Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. 2.

  • Page 18: Re-Air Purging (Re-Installation)

    7.6 Re-air purging (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the closed position. 2. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. 3.

  • Page 19: Balance Refrigerant Of The 2-Way, 3-Way Valves

    7.7 Balance refrigerant of the 2-way, 3-way valves Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port.

  • Page 20: Evacuation

    7.8 Evacuation Procedure: 1. Connect the vacuum pump to the charge set’s centre hose. 2. Evacuation for approximately one hour. Confirm that the gauge needle 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 after turning off the vacuum pump).

  • Page 21: Gas Charging

    7.9 Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid refrigerant).

  • Page 22: Operation Characteristics

    8. Operation characteristics 8.1 MSV1-09HRDN1-QC2(A) Piping Length Characteristics (Cooling) Cooling Characteristics 2.62 2.74 2.58 2.68 2.54 2.62 2.50 2.56 2.46 2.50 2.42 2.44 2.38 2.38 2.34 2.32 0.79 0.86 0.78 0.84 0.77 0.82 0.76 0.80 0.75 0.78 0.74 0.76 0.74 0.73 10 11 12 13 14 25 27 29 31 33...

  • Page 23: Msv1-12Hrdn1-Qc2(A)

    8.2 MSV1-12HRDN1-QC2(A) Piping Length Characteristics (Cooling) Cooling Characteristics 3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 1.14 1.20 1.10 1.16 1.06 1.12 1.02 1.08 0.98 1.04 0.94 1.00 0.96 0.90 10 11 12 13 14 25 27 29 31 33 35 37 39 41 43 ℃...

  • Page 24: Electronic Function

    9. Electronic function 9.1 Abbreviation T1: Indoor ambient temperature T2: Pipe temperature of indoor heat exchanger T3: Pipe temperature of outdoor heat exchanger T4: Outdoor ambient temperature 9.2 Display function 9.2.1 Icon explanation on indoor display board. MSV1-09HRDN1-QC2(A) MSV1-12HRDN1-QC2(A) OPERRATION indicator This indicator flashes after power is on and illuminates when the unit is in operation.

  • Page 25: Protection

    9.3 Protection 9.3.1 Three Minutes Delay at restart for compressor. 9.3.2 Temperature protection of compressor top. 9.3.3 If the temperature of compressor top is too high(higher than 115℃ and the Over-load Protector is cut, the units stop. When the Over-load Protector restore and close(lower than 100℃), the compressor will restart( in this case the compressor is restricted by Three Minutes Delay protection.

  • Page 26: Cooling Mode

    9.5 Cooling Mode 9.5.1 The operation frequency of compressor after starting submits to following rule. -0.5 -1.0 When the machine is running and ∆T (=room temp. – setting temp.) changes, the frequency of compressor will rise or descend a grade (7 minutes after starting). After starting, if ∆T stays in a zone for 3 minutes, the frequency will change as follow: Zone A : Current frequency rise a grade till the maximum grade.

  • Page 27: Drying Mode

    9.5.6 Indoor fan operation rule. In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low and auto. Auto fan in cooling mode acts as follow: ℃ high medium 9.5.7 Condenser high temperature protection function(in cooling and drying mode) If T3＞60℃...
  • Page 28 anti-cold-wind is disabled. 9.7.2 Indoor fan speed can be set as high, medium, low or auto grade, but anti-cold-wind function is preferential. Auto fan action in heating mode. ℃ medium high 9.7.3 The operation frequency of compressor after starting submits to following rule: ℃...
  • Page 29 9.7.6 Defrosting mode. Condition of defrosting. Condition 1: If T4＞0℃, When the units are running, if the following two items are satisfied the units start defrosting: a) The units runs with T3＜3℃ for 40 minutes and T3 keeps lower than -6℃ for more than 3 minutes.

  • Page 30: Auto Mode Function

    rating value. Any condition of above is not satisfied, the machine can not be turned into rating capacity test mode. The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or setting temperature. 9.7.9 Turbo function in heating mode.

  • Page 31: Timer Function

    ℃ ℃ high high Outdoor fan action in heating mode Outdoor fan action in cooling & drying mode (including heating in auto mode). (including cooling in auto & forced mode). 9.11.3 Outdoor fan action in cooling & drying mode(including cooling in auto & forced mode). Please refer to the pic.

  • Page 32: Automatic Panel Function

    When the unit is turned on, the panel is opened automatically at an angle of 50°, then the horizontal louver will be opened. When the unit is turned off, the panel is closed automatically at an angle of 50°, then the horizontal louver will be closed.

  • Page 33: Outdoor Chassis Heating Cable Function (Optional)

    minutes or pressing FOLLOW ME button again, the follow me function will be turned off automatically, and the temperature collection function of room temperature sensor will be available, the PCB will control the unit according to the room temperature detected from its own room temperature sensor and setting temperature. 9.19 Outdoor chassis heating cable function (optional) Heating cable is fixed on outdoor chassis to help deicing and to avoid freezing.

  • Page 34: Troubleshooting

    10. Troubleshooting Safety Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down the power supply, electricity power still are kept in capacitors, do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Bulb (25-40W)

  • Page 35: Indoor Unit Error Display

    10.1 Indoor Unit Error Display Display LED STATUS EEPROM parameter error Indoor / outdoor units communication protection Zero-crossing signal error Fan speed out of control Open or short circuit of outdoor temperature sensor Open or short circuit of room or evaporator temperature sensor IGBT over-strong current protection Over voltage or too low voltage protection Temperature protection of compressor top.
  • Page 36 LED6 LED5 LED4 LED1...

  • Page 37: Diagnosis And Solution

    10.2 Diagnosis and Solution 10.2.1 E0 (EEPROM parameter error) error diagnosis and solution Circuit or software error on indoor PCB Replace indoor PCB 10.2.2 E1 (indoor / outdoor units communication protection) error diagnosis and solution Disconnect the power supply, after 1 minute, connect the power supply, turn on the unit with remote controller Does the unit work normally?
  • Page 38 10.2.4 E3 (indoor fan speed out of control) diagnosis and solution Is the indoor fan motor Repair the connector and connector and connection reconnect good? Is voltage being applied to the fan motor? Indoor PCB is defective. (rang 90v-160v between Replace the indoor PCB.
  • Page 39 10.2.8 P1(over voltage or too low voltage protection) diagnosis and solution. Be sure the power supply is Is the power supply good? normal when using the units Replace the outdoor e-box. 10.2.9 P2 (temperature protection of compressor top) diagnosis and solution. Is the connection Does compressor Reconnect and retest.

  • Page 40: Key Parts Checking

    10.3 Key parts checking. 10.3.1. Compressor checking (Model: DA108X1C-20FZ3). Measure the resistance value of each winding by using the multi-meter. Position Resistance Value Blue - Red 0.71 Blue - Black (20℃) Red - Blue 10.3.2 Outdoor Fan Motor (Model: YDK24-6G). Measure the resistance value of each winding by using the multi-meter.
  • Page 41 10.3.5 Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor exhaust temp.(Te) sensor. Measure the resistance value of each winding by using the multi-meter. Some frequently-used R-T data for T1,T2,T3 and T4 sensor: ℃...

This manual is also suitable for:

Msv1-09hrdn1-qc2Msv1-12hrdn1-qc2aMsv1-12hrdn1-qc2

Table of Contents