Related Manuals for Midea MSR1-24HRDN1-QC2W
Summary of Contents for Midea MSR1-24HRDN1-QC2W
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Page 1: Service Manual
SERVICE MANUAL MIDEA AIRCONDITIONER DC INVERTER SPLIT WALL-MOUNTED TYPE MSR1-24HRDN1-QC2W V1.0 Mar., 2010... -
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 3.2 Outdoor Unit ................................ 6 4. Specification ............................. 7 ... -
Page 3: 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. - Page 4 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 5 your skin or clothes, wash it well with clean The chemical in batteries could cause burns or other Do not use the remote of the batteries have health hazards leaked.
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Page 6: 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 Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode Time Delay Safety control Restarting is for approx. - Page 7 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.
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Page 8: Dimension
3. Dimension 3.1 Indoor Unit Dimension Model 1030 3.2 Outdoor Unit MOF-24HDN1-QC2W... -
Page 9: Specification
4. Specification Indoor MSR1-24HRDN1-QC2W Outdoor MOF-24HDN1-QC2W Power supply Ph-V-Hz 1,220-240V~,50Hz Max. input consumption 2950 Max. current 13.5 Model DA150S1C-20FZ Type Twin-rotary DC inverter Brand Toshiba Compressor Capacity Btu/h 15286 Input 1150 Rated current(RLA) Refrigerant oil Model YDK36-4C(A) Brand Welling Indoor fan motor... -
Page 10: Refrigerant Cycle Diagram
5. Refrigerant cycle diagram... -
Page 11: Wiring Diagram
6. Wiring diagram 6.1 Indoor Unit... -
Page 12: Outdoor Unit
6.2 Outdoor Unit... -
Page 13: Installation Details
7. Installation details 7.1 Wrench torque sheet for installation Outside diameter Torque inch Kgf.m Ф9.52 Ф16.0 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 14 leakage from the refrigeration cycle. Procedure Caution: 1. Recheck the piping connections. If gas leakage is discovered in step (3) above, take the 2. Open the valve stem of the 2-way valve following measures. counterclockwise approximately 90’, wait 10 If the leaks stop when the piping connections are seconds, and then set it to closed position.
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Page 15: 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 16: 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 17: 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 18: 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 19: 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 20: Electronic Function
8 Electronic function 8.1 Abbreviation T1: Indoor ambient temperature T2: Pipe temperature of indoor heat exchanger T3: Pipe temperature of outdoor heat exchanger T4: Outdoor ambient temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. Auto indicator ① This indicator illuminates when the air conditioner is in AUTO operation. -
Page 21: Fan-Only Mode
It will take only 1 minute when the unit is powered on at first time. 8.3.4 Temperature sensor protection at open circuit or short circuit. 8.3.5 Inverter module Protection. Inverter module has a protection function against current, voltage and temperature. If these protections happened, the unit will stop and LED display error code . - Page 22 -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 F8.
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Page 23: Drying Mode
medium, low and auto. Auto fan in cooling mode acts as follow: high medium 8.5.7 Condenser high temperature protection function(in cooling and drying mode) If T3＞60℃ for 5 seconds, compressor will stop immediately, and the machine will not resume until T3＜52℃. 8.6 Drying mode 8.6.1 Indoor fan speed is fixed at breeze grade and can’t be changed. -
Page 24: Heating Mode
8.7 Heating mode 8.7.1 Indoor fan action: Anti-cold-wind function. If the compressor stops caused by room temperature rising, indoor fan will be forced to run 127 seconds with breeze. During this period, anti-cold-wind is disabled. After this, anti-cold –wind function is available. - Page 25 Zone D: Compressor stops after running with F1 for 60 minutes or when ∆Th＞6℃. 8.7.4 Outdoor unit current control in heating mode. comp. pause I3HEAT freq. descends if curr. rises; I2HEAT freq. remains if curr. descends I1HEAT running normally 8.7.5 Indoor heat exchanger high temperature protection. If T2＞60℃, the compressor will stop and not resume until T2＜48℃.
- Page 26 compressor 4-way valve outdoor fan indoor fan indoor fan breeze 10s 100s no longer than 10 minutes 8.7.8 Rating capacity test function Set the indoor unit with remote controller as: high fan, 30℃ in heating mode, then press “TURBO” button on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine will turn into rating capacity test mode, the buzzer will make a “di”...
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Page 27: Auto Mode Function
8.8 Auto mode function 8.8.1 This mode can be chosen with remote controller and the setting temperature can be changed between 17~30℃. In auto mode, the machine will choose cooling, heating or fan-only mode according to ∆T(∆T =T1-Ts). ∆T=T1-Ts Running mode ∆T＞1℃... -
Page 28: Timer Function
8.12 Timer function 8.12.1 Timing range is 24 hours, and the minimum resolution is 15 minutes. 8.12.2 Timer on. After turning off, the machine will turn on automatically when reaching the setting time. 8.12.3 Timer off. After turning on, the machine will turn off automatically when reaching the setting time. 8.12.4 Timer on/off. -
Page 29: Troubleshooting
9. 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 30: Indoor Unit Error Display
9.1 Indoor Unit Error Display Display LED STATUS EEPROM parameter error Indoor / outdoor units communication protection Open or short circuit of outdoor temperature sensor Open or short circuit of indoor temperature sensor Inverter module over-strong current protection Over voltage or too low voltage protection Temperature protection of compressor top. -
Page 31: Diagnosis And Solution
9.2 Diagnosis and Solution 9.2.1 E0(EEPROM parameter error) error diagnosis and solution Circuit or software error on indoor PCB Replace indoor PCB 9.2.2 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 32 Is the indoor temperature and evaporator sensor Repair the connector and connector and connection reconnect good? Replace the sensor and Replace the indoor PCB check if E6 display again? 9.2.5 P0(Inverter module over-strong current protection) diagnosis and solution. Is all connections on PCB Repair or correct the and between PCB and connector or connection.
- Page 33 Is the connection Does compressor Reconnect and retest. good? operate? Is refrigerant Is protector Replace the protector. circulation normal? volume normal? Check the outdoor Charge refrigerant main PCB. Is there some problem? Replace the outdoor PCB. Is abnormality the same after gas charging? Check refrigerant system (such as clogging of capillary, etc)
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Page 34: Key Parts Checking
9.3 Key parts checking. 9.3.1. Compressor checking (Model: DA150S1C-20FZ) Measure the resistance value of each winding by using the multi-meter. Position Resistance Value Blue - Red 0.95Ω Blue - Black (20 ) Red - Blue 9.3.2 Outdoor Fan Motor (Model: YDK55-6G) Measure the resistance value of each winding by using the multi-meter. - Page 35 9.3.4 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: Temperature ( ) Resistance Value (KΩ) 26.9...
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