Related Manuals for Midea MSC-07CRN1
Summary of Contents for Midea MSC-07CRN1
- Page 1 Cover MSC-07CRN1; MSC-07HRN1 MSC-09CRN1; MSC-09HRN1 MSC-12CRN1; MSC-12HRN1 MSC-18CRN1; MSC-18HRN1...
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Page 2: Table Of Contents
Pumping down (Re-installation) ....................19 Re-air purging (Re-installation) ....................20 Balance refrigerant of the 2-way, 3-way valves ................. 21 Evacuation..........................22 Gas charging ..........................23 Pressure table ......................24 MSC-07CRN1..........................24 MSC-07HRN1..........................24 MSC-09CRN1..........................24 MSC-09HRN1..........................25 MSC-12CRN1..........................25 MSC-12HRN1..........................25 MSC-18CRN1.......................... - Page 3 Content 10.3 MSC-09CRN1..........................28 10.4 MSC-09HRN1..........................28 10.5 MSC-12CRN1..........................29 10.6 MSC-12HRN1..........................29 10.7 MSC-18CRN1..........................30 10.8 MSC-18HRN1..........................30 Electronic function ....................31 11.1 Proper symbols and their meaning .................... 31 11.2 Function............................31 11.3 Protection ........................... 31 11.4 Fan-only mode..........................32 11.5 Cooling mode ..........................
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Page 5: Precaution
Service manual 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 Installation Do not use a defective or underrated circuit breaker. - Page 6 Service manual unit is so equipped.) Operational There is risk of physical injury, electric shock, or product failure. Do not expose the skin directly to cool air for long When the product is soaked (flooded or submerged), periods of time. (Do not sit in the draft). contact an Authorized service center.
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Page 7: Function
Service manual 2. Function Indoor unit Operation ON/OFF 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. Starting temperature control Anion (Optional) Indoor fan is delayed for 5 sec at the starting. Time Delay Safety control Tele Remote control (Optional) Restarting is for approx. - Page 8 Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low ambient kit The unit can operate in cooling mode at low ambient temperature conditions. 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.
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Page 9: Dimension
Service manual 3. Dimension 3.1 Indoor unit Dimension Mode 3.2 Outdoor unit Dimension Mode... -
Page 10: Specification
Service manual 4. Specification Model MSC-07CRN1 MSC-07HRN1 MSC-09CRN1 MSC-09HRN1 Power supply Ph-V-Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz Capacity Btu/h 7000 7000 9000 9000 Input Cooling Rated current Btu/w.h 10.9 10.9 10.9 10.9 Capacity... - Page 11 Service manual Model MSC-12CRN1 MSC-12HRN1 MSC-18CRN1 MSC-18HRN1 Power supply Ph-V-Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz Capacity Btu/h 12000 12000 18000 18000 Input 1090 1090 1720 1720 Cooling Rated current Btu/w.h Capacity Btu/h ----- 13000 ----- 19000...
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Page 12: Refrigerant Cycle Diagram
Service manual 5. Refrigerant cycle diagram Cooling only Heat pump mode... -
Page 13: Operation Limits
Service manual 6. Operation limits 6.1 Cooling operation Outdoor unit air temp. ℃ Indoor air temp. ℃ Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 6.2 Heating operation Indoor air temp. - Page 14 Service manual...
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Page 15: Schematic Diagram And Wiring Diagram
Service manual 7. Schematic diagram and Wiring diagram 7.1. Schematic diagram... -
Page 16: Wiring Diagram
Service manual 7.2. Wiring diagram 7.2.1 MSC-07CRN1, MSC-09CRN1, MSC-12CRN1... - Page 17 Service manual 7.2.2 MSC-07HRN1, MSC-09HRN1, MSC-12HRN1...
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Page 18: Service Manual
Service manual 7.2.3 MSC-18CRN1 I N D O O R U N I T O U T D O O R U N I T Y & G R E D B L A C K B L A C K O V E R L O A D B L A C K R E L A Y... - Page 19 Service manual 7.2.4 MSC-18HRN1 I N D O O R U N I T O U T D O O R U N I T B L U E B L U E Y & G R E D 4 - W A Y B L A C K O V E R L O A D R E L A Y...
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Page 20: Installation Details
Service manual 8. Installation details Wrench torque sheet for installation Outside diameter Torque inch Kg.m 6 .35 φ φ 9 .52 φ 1 2.7 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit Pipe length and the elevation... - Page 21 Service manual In case that more than 5m. Caution: Capacity is base on standard length and maximum allowance length is base of reliability. Oil trap should be install per 5-7 meters.
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Page 22: Air Purging Of The Piping And Indoor Unit
Service manual Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; 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 compressor, reduce the cooling capacity, and could lead to a malfunction of unit. -
Page 23: Pumping Down (Re-Installation)
Service manual 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 24: Re-Air Purging (Re-Installation)
Service manual 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 25: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual 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 26: Evacuation
Service manual 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 27: Gas Charging
Service manual 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 28: Pressure Table
9. Pressure table Note: The pressure data is from 3 way valve, the pressure data are pressure above atmosphere. D: Dry bulb temp. W: Wet bulb temp. 9.1 MSC-07CRN1 Cooling mode Outdoor temperature (Dry bulb temp) Indoor Conditions Pressure 25ºC 30ºC... -
Page 29: Msc-09Hrn1
Service manual 9.4 MSC-09HRN1 Cooling mode Outdoor temperature (Dry bulb temp) Indoor Conditions Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC 21ºC D15ºC W Pressure( kg/cm 10.0 24ºC D17ºC W Pressure( kg/cm 10.1 27ºC D19ºC W Pressure( kg/cm 10.2 10.8 32ºC D23ºC W Pressure( kg/cm 10.0 10.5... -
Page 30: Msc-18Crn1
Service manual 9.7 MSC-18CRN1 Cooling mode Outdoor temperature (Dry bulb temp) Indoor Conditions Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC 21ºC D15ºC W Pressure( kg/cm 24ºC D17ºC W Pressure( kg/cm 10.0 10.5 27ºC D19ºC W Pressure( kg/cm 10.4 10.9 32ºC D23ºC W Pressure( kg/cm 10.5 10.9... -
Page 31: Capacity Table
Service manual 10. Capacity table 10.1 MSC-07CRN1 SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Total capacity kW 2.04 1.94 1.61 1.53 1.41 21ºC D Sensitive capacity kW 1.52 1.41 1.39 1.32 1.19 1.07 15ºC W Input kW. -
Page 32: Msc-09Crn1
Service manual Input kW. 0.83 0.68 0.65 0.56 0.51 10.3 MSC-09CRN1 SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Total capacity kW 2.42 2.41 2.24 2.03 1.87 1.75 21ºC D Sensitive capacity kW 1.72 1.69 1.65 1.53 1.43 1.36... -
Page 33: Msc-12Crn1
Service manual Input kW. 1.06 0.93 0.82 0.77 0.71 0.65 10.5 MSC-12CRN1 SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Total capacity kW 3.276 3.187 3.105 2.821 2.746 2.621 21ºC D Sensitive capacity kW 2.567 2.457 2.413 2.287 2.21... -
Page 34: Msc-18Crn1
Service manual Capacity kW 4.106 3.989 3.761 3.567 3.045 2.876 22ºC Input kW. 1.259 1.212 1.153 1.106 0.836 10.7 MSC-18CRN1 SUMMER OUTDOOR TEMPERATURE DRY Indoor Conditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Total capacity kW 4.914 4.781 4.658 4.232 4.119 3.932 21ºC D Sensitive capacity kW... -
Page 35: Electronic Function
Service manual Capacity kW 6.159 5.984 5.642 5.351 4.568 4.314 22ºC Input kW. 1.889 1.818 1.730 1.659 1.500 1.254 11. Electronic function 11.1 Proper symbols and their meaning TA: Indoor ambient temperature TE: Indoor evaporator temperature TS: Setting temperature through the remote controller : Self-protection amp of compressor, continue three seconds until turns off the compressor. -
Page 36: Fan-Only Mode
Service manual 11.3.4 Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the unit stops and LED displays failure information and can’t returns to normal operation automatically. 11.3.5 The current protection of the compressor If compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor On, the unit stops and LED displays failure information and can’t returns to normal operation automatically. -
Page 37: Dehumidifying Mode
Service manual Auto fan at cooling mode: Anti-freezing control to indoor evaporator at cooling mode (T: evaporator temp.) 11.6 Dehumidifying mode 11.6.1 The 4-way valve is off in dehumidifying mode 11.6.2 Compressor and Indoor Fan actions in dehumidifying mode Indoor Block Compressor and Outdoor Fan ON 6minutes... -
Page 38: Heating Mode
Service manual Breeze). Dehumidifying operation will be resumed when room temperature restores to over 13 ℃ 11.6.4 At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that of cooling mode. 11.6.5 At dehumidifying mode, the action of fans of indoor is the same as that of air-only mode. 11.7 Heating mode 11.7.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. -
Page 39: Defrosting Mode (Available For Heating Mode)
Service manual Low fan Room temp. down Room temp. up Med fan T-Ts 11.7.6 Indoor evaporator high-temperature protection at heating mode (T=indoor exchanger temp.) 11.7.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time. 11.8 Defrosting mode (available for heating mode) 11.8.1 Defrosting condition: Defrosting starts when either of the following &... -
Page 40: Auto Mode
Service manual After three times continuous 7.5-minute defrost, the fourth defrost time should be 10 minutes. The circulation is as following: 11.8.3 Ending condition of defrosting If one of following conditions is satisfied, end the defrost and turn into heating mode: A. -
Page 41: Sleep Mode
Service manual 11.10.1 Select forced cooling function with the forced cooling button or the switch 11.10.2 The compressor is unconditionally turned on, after 30 minutes cooling operation whose fan mode is set as low, the A/C operates at the DRY mode with a set temp. of 24 ℃... - Page 42 Service manual...
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Page 43: Model And Parameters
Service manual 12. Model and Parameters Model( MSH-) 07CRN1 07HRN1 09CRN1 09HRN1 12CRN1 12HRN1 18CRN1 18HRN1 I3SEC 7.5A 7.5A 10.0A 10.0A 12.0A 12.0A 16.0A 16.0A I5MIN 6.2A 6.2A 7.5A 7.5A 8.5A 8.5A 15.0A 15.0A IFAN 5.2A 5.2A 5.5A 5.5A 7.5A 7.5A 9.0A 9.0A... -
Page 44: Troubleshooting
Service manual 13. Troubleshooting 13.1 Display board Signal receptor AU TO indicator Thi s indicator illuminates whe n the air conditioner i s in AUTO operation. DE FROST indicator (F or Cooling & H eating mo dels only) Thi s indicator illuminates whe n the air conditioner starts defrostin g automati cally or when the warm air control fea ture is activated in he ating oper ation. -
Page 45: Diagnostic Chart
Service manual 13.3 Diagnostic chart After energizing, no indicator is lighted and the air conditioner can’t be operated. -
Page 46: Resetting Phenomenon Often Occurs During Operation
Service manual 13.4 Resetting phenomenon often occurs during operation. (That is automatically 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: 13.5 Operation lamp flashes and Timer lamp off. -
Page 47: Operation Lamp Off And Timer Lamp Flashes
Service manual 13.7 Operation lamp off and Timer lamp flashes 13.8 Operation lamp on and Timer lamp flashes EEROM error, indoor PCB is defective. 13.9 Operation lamp flashes, Timer lamp flashes . This is alarm signal when the main chip can’t detect over-zero signal. When such failure occurs, the main control board must have fault. -
Page 48: Characteristic Of Temperature Sensor
Service manual 14. Characteristic of temperature sensor Temp. Resistance K Temp. Resistance K Temp. Resistance K 62.2756 14.6181 4.3874 58.7079 13.918 4.2126 56.3694 13.2631 4.0459 52.2438 12.6431 3.8867 49.3161 12.0561 3.7348 46.5725 11.5 3.5896 10.9731 3.451 41.5878 10.4736 3.3185 39.8239 3.1918 37.1988 9.5507...
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