Related Manuals for Midea MSR1-09CR-NB6
Summary of Contents for Midea MSR1-09CR-NB6
- Page 1 Cover MSR1-09CR-NB6 MSR1-09HR-NB6 MSR1-12CR-NB4 MSR1-12HR-NB4 MSR1-18CR-NB4 MSR1-18HR-NB4...
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Page 2: Table Of Contents
Content Content Precaution 1.1 Safety Precaution 1.2 Warning 2 Function Dimension 3.1 Indoor unit 3.2 Outdoor unit 6 Refrigerant cycle diagram 9 Operation limits 10 5.1 Cooling operation 5.2 Heating operation Wiring diagram Installation details 7.1 Wrench torque sheet for installation 7.2 Connecting the cables 7.3 Pipe length and the elevation 15 7.4 Air purging of the piping and indoor unit... - Page 3 Content 10. Troubleshooting 30 10.1 Display board 10.2 Troubleshooting 30 10.3 Diagnostic chart 31 10.4 Resetting phenomenon often occurs during operation. 10.5 Operation lamp flashes and Timer lamp off. 32 10.6 Operation lamp flashes and Timer lamp on. 32 10.7 Operation lamp off and Timer lamp flashes 33 10.8 Operation lamp on and Timer lamp flashes 33 10.9 Operation lamp flashes, Timer lamp flashes .
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Page 4: 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 If the base collapses, the air conditioner could fall... - Page 5 Service manual Avoid personal injury. Stop operation and close the window in storm Do not install the product where it will be or hurricane. If possible, remove the product exposed to sea wind (salt spray) directly. from the window before the hurricane arrives. It may cause corrosion on the product.
- Page 6 Service manual conditioner and could cause product malfunction or Operational damage. Do not insert hands or other object through air Do not expose the skin directly to cool air for inlet or outlet while the product is operated. long periods of time. (Do not sit in the draft). There are sharp and moving parts that could cause This could harm to your health.
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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 Indoor fan is delayed for 5 sec at the starting Time Delay Safety control 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 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 9: Dimension
Service manual 3. Dimension 3.1 Indoor unit Dimension Mode 9/12K 3.2 Outdoor unit Dimension Mode... - Page 10 Service manual Specification： Model MSR1-09CR-NB6 MSR1-09HR-NB6 Power supply Ph-V-Hz 1Ph, 220-230V~, 60Hz 1Ph, 220-230V~, 60Hz Capacity Btu/h 9000 9000 Input 1011 1011 Cooling Rated current Btu/w.h Capacity Btu/h —— 10000 Input —— 1052 Heating Rated current —— 4.45 Btu/w.h ——...
- Page 11 Service manual The above design and specifications are subject to change without prior notice for product improvement. Model MSR1-12CR-NB4 MSR1-12HR-NB4 MSR1-18CR-NB4 MSR1-18HR-NB4 Power supply Ph-V-Hz 1Ph, 220-230V~, 60Hz 1Ph, 220-230V~, 60Hz 1Ph, 220-230V~, 60Hz 1Ph, 220-230V~, 60Hz 11000 11000 16000 16000 Capacity Btu/h...
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Page 12: Refrigerant Cycle Diagram
Service manual 4. Refrigerant cycle diagram Cooling only Heat pump mode... -
Page 13: Operation Limits
Service manual 5. Operation limits 5.1 Cooling operation Outdoor unit air temp.℃ DB Indoor air temp. ℃ DB Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 5.2 Heating operation Indoor air temp. -
Page 14: Wiring Diagram
Service manual 6. Wiring diagram Intdoor： MSR1-09CR-NB6，MSR-12CR-NB4(6) Outdoor : MSR1-09CR-NB6，MSR1-12CR-NB4(6) Indoor: MSR1-09HR-NB6， MSR1-12HR-NB4(6) - Page 15 Service manual Outdoor： MSR1-09HR-NB6，MSR1-12HR-NB4(6) Indoor：- MSR1-18CR-NB4(6)
- Page 16 Service manual Outdoor： MSR1-18CR-NB4(6) Indoor： MSR1-18HR-NB4(6)
- Page 17 Service manual Outdoor: MSR1-18HR-NB4(6)
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Page 18: Installation Details
Service manual 7. Installation details Wrench torque sheet for installation Outside diameter Torque inch Kg.m φ6.35 φ9.52 φ12.7 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit Pipe length and the elevation Max. -
Page 19: 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 20: Pumping Down (Re-Installation)
Service manual Pumping down (Re-installation) Procedure 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. Operate the unit for 10 to 15 minutes. -
Page 21: Re-Air Purging (Re-Installation)
Service manual Re-air purging (Re-installation) Procedure: Confirm that both the 2-way and 3-way valves are set to the closed position. 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. Air purging. -
Page 22: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual Balance refrigerant of the 2-way, 3-way valves Procedure: Confirm that both the 2-way and 3-way valves are set to the open position. 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 23: Evacuation
Service manual Evacuation Procedure: Connect the vacuum pump to the charge set’s centre hose. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. 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 24: 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 25: Electronic Function
Service manual 8. Electronic function 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. 3sec : Self-protection amp of compressor, continue five minutes until turns off the compressor. 5MIN : Self-protection amp of outdoor fan/indoor fans when they change from higher wind to lower wind. -
Page 26: Fan-Only Mode
Service manual 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. Fan-only mode Fan speed is high/mid/low/ Auto Cooling mode The 4-way valve is closed at cooling mode. -
Page 27: Dehumidifying Mode
Service manual Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. ) Compressor and outdoor fan on EVAP. temp. down EVAP. temp. up Compressor and outdoor fan off (after 5 mins) Dehumidifying mode 8.6.1 The 4-way valve is off in dehumidifying mode 8.6.2 Compressor and Indoor Fan actions in dehumidifying mode TA-TS... -
Page 28: Heating Mode
Service manual Heating mode 8.7.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. 4-way valve must delay 2 minutes compared with compressor if the compressor changed into non-heating mode or turned off. 4-way valve doesn't delay in dehumidifying mode 8.7.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except for the defrosting mode or the end of defrost... -
Page 29: Defrosting Mode (Available For Heating Mode)
Service manual Low fan Room temp. down Room temp. up Med fan T-Ts 8.7.6 Indoor evaporator high-temperature protection at heating mode (T=indoor exchanger temp.) 8.7.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time Defrosting mode (available for heating mode) Defrosting condition: Defrosting starts when either of the following ①&②... -
Page 30: Auto Mode
Service manual 7.5 minutes 7.5 minutes 7.5 minutes 7.5 minutes defrost defrost defrost defrost 8.8.4 Ending condition of defrosting If one of following conditions is satisfied, end the defrost and turn into heating mode: A. The defrost time has reached to 7.5 or 10 minutes. B. -
Page 31: Sleep Mode
Service manual 8.10.2 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℃ 8.10.3 All protections of remote control cooling are available at forced cooling operation 8.10.4 Forced Auto function Select forced auto function with the forced auto button or the switch. -
Page 32: Model And Parameters
Service manual 9. Model and Parameters Model MSR1-09C(H)RNB4(6) MSR1-12C(H)RNB4(B6) MSR1-18C(H)RNB4(6) I3SEC I5MIN 8.5A IFAN 6.5A IRESTORE 5.5A 9.5A IDEFROST 4.5A 6.5A 7.5A 28℃ 34℃ 34℃ 32℃ 37℃ 36℃ 30℃ 33℃ 30℃ 26℃ 22℃ 20℃ 4℃ 4℃ 3℃ 10℃ 10℃ 14℃ 60℃... -
Page 33: Troubleshooting
Service manual 10. Troubleshooting Display board 10.1 Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation. Timer indicator: The indicator illuminates then TIMER is set ON. PRE-DEF. indicator (For cooling & heating mode only) The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating. -
Page 34: Diagnostic Chart
Service manual Diagnostic chart 10.3 After energizing, no indicator is lighted and the air conditioner can’t be operated. -
Page 35: Resetting Phenomenon Often Occurs During Operation
Service manual Resetting phenomenon often occurs during operation. 10.4 (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: Operation lamp flashes and Timer lamp off. -
Page 36: Operation Lamp Off And Timer Lamp Flashes
Service manual Operation lamp off and Timer lamp flashes 10.7 Operation lamp on and Timer lamp flashes 10.8 EEROM error, indoor PCB is defective. Operation lamp flashes, Timer lamp flashes . 10.9 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 37: Characteristic Of Temperature Sensor
Service manual 11. Characteristic of temperature sensor Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ 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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