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Related Manuals for Electrolux MSG-07HRIN2
Summary of Contents for Electrolux MSG-07HRIN2
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Page 1: Service Manual
Service manual SERVICE MANUAL MSG-07/09/12HRIN2... - Page 2 Service manual Precaution 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. Warning Installation Do not use a defective or underrated circuit breaker.
- Page 3 Service manual There is risk of electric shock. consumer air conditioner, not a precision refrigerant When the product is not be used for a long time, system. disconnect the power supply plug or turn off the There is risk of damage or loss of property. breaker.
- Page 4 Service manual 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. Anti-freezing control in cooling Work voltage (160v-253v) Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode High efficiency (30%)
- Page 5 Service manual Outdoor unit Power relay control The unit has 3 minutes 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 6 Service manual Dimension 3.1 Indoor unit (Inverter Eco) model 7K/9K 3.2 Outdoor unit (Inverter Eco) Dimension Model 7K/9K/12K...
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Page 7: Specification
Service manual Specification Model MSG-07HRIN2 MSG-09HRIN2 MSG-12HRIN2 Power source 220-240V~ 50Hz 220-240V~ 50Hz 220-240V~ 50Hz Capacity BTU/H 7000(2700~9000) 9000(2730~10600) 12000(3070~13300) Input 780(305~990) 990(305~1180) 1340(334~1494) Cooling Running current 4.8(1.35~6.2) 4.5(1.2~6.6) 5.8(1.60~7.60) BTU/W.H,W/W 9.0, 2.62 9.0, 2.62 9.0, 2.61 Capacity BTU/H 9000(2700~11000) - Page 8 Service manual Refrigerant cycle diagram...
- Page 9 Service manual Operation limits 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. Heating operation Indoor air temp. ℃ DB Outdoor unit air temp.℃...
- Page 10 Service manual Wiring diagram Indoor unit 7k/9K Indoor unit 12K...
- Page 11 Service manual Outdoor unit...
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Page 12: Connecting The Cables
Service manual Installation details Wrench torque sheet for installation Outside diameter Torque inch Kgf.m φ6.35 φ9.52 φ12.7 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Unit 7k/9K 8.3 Pipe length and the elevation Standard Max. - Page 13 Service manual 8.4 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.
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Page 14: Pumping Down (Re-Installation)
Service manual 8.5 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 15: Re-Air Purging (Re-Installation)
Service manual 8.6 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 16: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual 8.7 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 17 Service manual 8.8 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.
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Page 18: Gas Charging
Service manual 8.9 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 19: Electronic Function
Service manual Electronic function 9.1 Display board ① Auto indicator This indicator illuminates when the air conditioner is in AUTO operation. ② Timer indicator This indicator illuminates when TIMER is set ON/OFF. ③ 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 20: Dehumidifying Mode
Service manual 9.4.3 Auto fan at cooling mode: Condition Indoor fan speed T=Indoor Temp.-Setting Temp. Room temp. up T<1.5℃ 1.5℃<T<4℃ Mid. T>4℃ High Room temp. down T> 3℃ High 1℃<T<3℃ Mid. T<1℃ 9.4.4 Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. ) Evaporator Temp. -
Page 21: Heating Mode
Service manual Heating mode 9.6.1 Generally, the 4-way valve is open at heating mode, but it is closed at defrosting. 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 defrosting mode. 9.6.2 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 22 Service manual 9.6.6 Indoor evaporator high-temperature protection at heating mode Condition (T= Indoor exchanger temp.) Compressor T<48℃ 53℃<T<63℃ Decrease frequency of compressor T>63℃ Defrosting operation (Available for heating mode only). 9.7.1 Defrosting condition: 9.7.1.1 When outdoor temp. is higher than 0℃, Defrosting starts when meeting one of the following conditions, a.
- Page 23 Service manual Outdoor low temperature protection Factory standard unit has not this function. Unit stops when outdoor temp. is low than -15° C and lasting time more than 60 minutes, and unit runs again when outdoor temp. higher than -12° C. When indoor PCB J7 jump is on, this function is available.
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Page 24: Outdoor Unit Error Display
Service manual Troubleshooting 10.1 Indoor Unit Error Display Defrosting Timer Auto Operation LED status ☆ Module protection ☆ Compressor top protection against temperature ☆ Open or short circuit of outdoor temperature sensor ☆ Over load or too low voltage protection ☆... -
Page 25: Problem Solution
Service manual 10.3 Problem Solution Problem Cause Remedy Power failure Check the power cord. Transformer failure Check the input and output on transformer. Not operating Replace it if failure. Indoor main control board failure Replace it after checked failure. Check wiring. Correct if there is any wrong connection. - Page 26 Service manual 11 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...