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Table of Contents
Related Manuals for Midea MSV1-07CRN1
Summary of Contents for Midea MSV1-07CRN1
- Page 1 MSV1-07CRN1 MSV1-07HRN1 MSV1-09CRN1 MSV1-09HRN1 MSV1-12CRN1 MSV1-12HRN1...
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Page 3: Table Of Contents
Content Content Precaution ........................1 1.1 Safety Precaution..........................1 1.2 Warning............................... 1 1.3 Function .............................. 4 Dimension ........................5 Specification ........................ 6 Operation limits ......................9 Wiring diagram......................10 Installation details...................... 12 6.1 Wrench torque sheet for installation ....................12 6.2 Connecting the cables........................ -
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 Do not place anything on the power cable. There is risk of fire or electric shock. Do not plug or unplug the power supply plug during operation. There is risk of fire or electric shock. Do not touch (operation) the product with wet hands. There is risk of fire or electric shock.
- Page 7 Service manual Use two or more people to lift and transport the product. Avoid personal injury. Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
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Page 8: Function
Service manual 1.3 Function 20. Ionizer Indoor unit The function will be operated by remote controller 1. Operation ON/OFF by remote controller 2. Sensing by room temperature Room temperature sensor. Pipe temperature Outdoor unit sensor. 3. Room temperature control 1. Power relay control Maintain the room temperature in accordance with The unit has 3 mins delay between continuously the setting temperature. -
Page 9: Dimension
Service manual 2 Dimension Indoor unit Dimension Mode outdoor unit Dimension Mode - 5 -... -
Page 10: Specification
Service manual 3 Specification MSV1-07CRN1 MSV1-07HRN1 MSV1-09CRN1 MSV1-09HRN1 Model 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-230V~, 50Hz 1, 220-230V~, 50Hz Power supply Ph-V-Hz Capacity Btu/h 7000 7000 9000 9000 Input Cooling Rated current Btu/w.h 10.9 10.9 3.2 , 10.9 3.2 , 10.9... - Page 11 Service manual MSV1-12CRN1 MSV1-12HRN1 Model 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz Power supply Ph-V-Hz Capacity Btu/h 12000 12000 Input 1090 1100 Cooling Rated current Btu/w.h 3.23 , 11.0 3.2 , 10.9 Capacity Btu/h —— 13000 Input —— 1050 Heating Rated current ——...
- Page 12 Service manual Refrigerant cycle diagram Cooling only Heat pump mode - 8 -...
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Page 13: Operation Limits
Service manual 4 Operation limits 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. Heating operation Indoor air temp. ℃ DB Outdoor unit air temp.℃... -
Page 14: Wiring Diagram
Service manual 5 Wiring diagram MSV1-07CRN1 MSV1-09CRN1 MSV1-12CRN1 Indoor unit outdoor unit: 2( N) YE L LOW/GREEN BLACK OVERLOAD RELAY (INTERNAL / BLACK EXTERNAL BLACK DEPENDING ON MODELS ) R ED COMPRESSON BLUE COMPRESSON BLUE FAN CA P A C I TON... - Page 15 Service manual MSV1-07HRN1 MSV1-09HRN1 MSV1-12HRN1 Indoor unit outdoor unit: I N DO O R U N IT O U TD O O R U NI T 1 2(N) 3 4 BL UE Y& G 4- WAY O V E RLO AD BL A CK BL UE RE L A Y...
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Page 16: Installation Details
Service manual 6 Installation details 6.1 Wrench torque sheet for installation Outside diameter Torque inch Kg.m φ6.35 φ9.52 φ12.7 φ15.88 φ19.05 6.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade 6.3 Pipe length and the elevation Standard Max. -
Page 17: Air Purging Of The Piping And Indoor Unit
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. 6.4 Air purging of the piping and indoor unit Required tools: Hexagonal wrench;... - Page 18 Service manual Procedure： 1. Recheck the piping connections. 2. Open the valve stem of the 2-way valve counterclockwise approximately 90’, wait 10 seconds, and then set it to closed position. Be sure to use a hexagonal wrench to operate the valve stem 3.
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Page 19: Pumping Down (Re-Installation)
Service manual 6.5 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 20: Re-Air Purging (Re-Installation)
Service manual 6.6 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. 3. Leave the valve on the charging cylinder closed. 4. -
Page 21: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual 6.7 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 22: Evacuation
Service manual 6.8 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. -
Page 23: Gas Charging
Service manual 6.9 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 24: Electronic Function
Service manual 7 Electronic function 7.1 Electronic control working environment Input voltage: 198~253V Input power frequency: 50/60Hz Ambient temperature: -7°C+43°C Indoor fan normal working amp is less than 1A Outdoor fan normal working amp is less than 1.5A Four-way valve normal working amp is less than 1A Swing motor: DC12V Compressor: single-phase power supply. -
Page 25: Function
Service manual 7.3 Function Remote receiving Testing and forced running Position set for indoor unit wind vane LCD displaying and alarm Timer On or off Protection for the compressor Current protection High temperature protection of indoor heat exchanger at heating mode Auto defrosting and heating recovery at heating mode Anti cold air at heating mode Anti frozen at cooling mode... -
Page 26: Fan Only Mode
Service manual 7.5 Fan only mode Fan speed is high/mid/low/ Auto 7.6 Cooling mode The 4-way valve is closed at cooling mode. The action of the compressor and the outdoor fan:(T=indoor temperature) Auto fan at cooling mode: Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. ) Compressor and outdoor fan on EVAP. -
Page 27: Dehumidifying Mode
Service manual 7.7 Dehumidifying mode Indoor fan speed at low speed. Protection is same as cooling mode. 7.8 Heating mode 7.8.1 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. -
Page 28: Defrosting Mode(Available For Heating Mode)
Service manual 7.8.5 Auto wind at heating mode (T=indoor temp.) 7.8.6 Indoor evaporator high-temperature protection at heating mode (T=indoor exchanger temp.) The louver opens to Standard Angle ANGLHEAT when power is on for the first time 7.9 Defrosting mode(available for heating mode) 7.9.1 Defrosting condition: Defrost starts when either of the following: T3 lower than 0’C, lasts for more than 40 minutes, provided that the time period then the temperature... -
Page 29: Auto Mode
Service manual Defrosting ends when either of the following: The time gets to 10 minutes. T3>20’C. The circulation is as following: 7.9.3 Defrosting Actions Defrost 10 or 6 minutes Compressor 4-way valve Outdoor fan Indoor fan Remark: when the evaporator pipe temperature sensor more than TE16, the indoor fan start to run. 7.10 Auto mode 7.10.1 The air conditioner automatically selects one of the following operation modes: cooling, heating or fan only according to the temperature difference between room temperature (TA) and set temperature... -
Page 30: Sleep Mode
Service manual Select forced auto function with the forced auto button or the switch. In forced auto status the A/C operates at remote control mode with a set temp. of 24℃ Manual operation is controlled by touching buttons and divided into force cooling and forced auto mode. It transfer between these two modes by pressing the buttons, the cycling order of the button press is as below graph show to you. -
Page 31: Auto Restart Function
Service manual after 2 hours, and during the next time the set temp do not change. The total time is 7 hours, after 7 hours the unit stops. 7.13 Auto restart function In case of a sudden power failure, this function automatically sets the unit to previous settings before the power failure when power returns. -
Page 32: Model And Parameters
Service manual 8 Model and Parameters Model 127sec 127sec 127sec DELAY_TIME 7.5min 7.5min 7.5min DEFROST_TIME 10.0 12.0 I3SEC I5MIN IFAN IRESTORE IDEFROST THDEFROST TMDEFROST TLDEFROST ANGLRANGE ANGLOFF ANGLCOOL ANGLHEAT ANGLCSL ANGLCSH ANGLHSL ANGLHSH ANGLDL ANGLDH ANGLFL ANGLFH 1000 1080 1280 HSPEEDH 1060 HSPEEDM... -
Page 33: Troubleshooting
Service manual 9 Troubleshooting 9.1 LCD Display board ON/OFF indicator This indicator illuminates when the air conditioner is in operation. PRE.-DEF. Indicator (For Cooling & Heating models only) This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode. -
Page 34: Indoor Unit Error Display
Service manual 9.2 Indoor Unit Error Display Display STATUS EEPROM error Zero-crossing examination error Fan speed beyond control Over current protection of the compressor occurs 4 times Open or short circuit of Room temperature sensor evaporator temperature sensor open or short circuit of 9.3 Diagnostic chart After energizing, no indicator is lighted and the air conditioner can’t be operated. -
Page 35: Resetting Phenomenon Often Occurs During Operation
Service manual 9.4 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: 9.5 Operation lamp flashes and Timer lamp off. -
Page 36: Operation Lamp Flashes And Timer Lamp On
Service manual 9.6 Operation lamp flashes and Timer lamp on. 9.7 Operation lamp off and Timer lamp flashes 9.8 Operation lamp on and Timer lamp flashes EEROM error, indoor PCB is defective. 9.9 Operation lamp flashes, Timer lamp flashes . This is alarm signal when the main chip can’t detect over-zero signal. - Page 37 Service manual 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 3.0707...
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