Service Manual
Page 7
... and electric shock. Service Manual 7 Do not store or use flammable Do not use the telephone or turn switches on . • Do not use the product in storm or hurricane. Gasolin When flammable gas leaks, turn the product on or off. There is risk of fire, failure of the product, or electric... risk of explosion or fire If strange sounds, or small or smoke comes from the window before turn off or disconnect the power supply cable. time. • There is risk of fire or electric shock. Turn the breaker off the gas and open a window for a long product. Do not plug or unplug...
... and electric shock. Service Manual 7 Do not store or use flammable Do not use the telephone or turn switches on . • Do not use the product in storm or hurricane. Gasolin When flammable gas leaks, turn the product on or off. There is risk of fire, failure of the product, or electric... risk of explosion or fire If strange sounds, or small or smoke comes from the window before turn off or disconnect the power supply cable. time. • There is risk of fire or electric shock. Turn the breaker off the gas and open a window for a long product. Do not plug or unplug...
Service Manual
Page 8
... outdoor unit. • There is risk of product damage or failure, or unintend- • This could step on connect the power supply plug or turn off when cleaning or maintaining the product. • There is risk of electric shock. age. installing the product. • Low refrigerant levels may cause...when age after installation or repair of product. Ventilate the product from time to ensure that nobody could result in personal injury and product dam- Turn the main power off the breaker. Take care to time when operating it together with a stove, etc. • There is risk of product...
... outdoor unit. • There is risk of product damage or failure, or unintend- • This could step on connect the power supply plug or turn off when cleaning or maintaining the product. • There is risk of electric shock. age. installing the product. • Low refrigerant levels may cause...when age after installation or repair of product. Ventilate the product from time to ensure that nobody could result in personal injury and product dam- Turn the main power off the breaker. Take care to time when operating it together with a stove, etc. • There is risk of product...
Service Manual
Page 37
... Indoor unit Outdoor unit 2. When the desired vacuum is open. Finishing the job 1. With a service valve wrench, turn the valve stem of gas side valve counter-clockwise to evacuate the tubing and indoor unit. Turn the valve stem of liquid side valve counter-clockwise to fully open the valve. 3. This process is...
... Indoor unit Outdoor unit 2. When the desired vacuum is open. Finishing the job 1. With a service valve wrench, turn the valve stem of gas side valve counter-clockwise to evacuate the tubing and indoor unit. Turn the valve stem of liquid side valve counter-clockwise to fully open the valve. 3. This process is...
Service Manual
Page 40
MAIN UNIT FUNCTION • DISPLAY Operation Indicator • On while in appliance operation, off while in appliance pause • Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on) Sleep Timer Indicator • On while in sleep timer mode, off when sleep timer cancel or appliance operation pause Timer Indicator • On while in timer mode (on/off), off when timer mode is off fan operates at low speed regardless of control 1. Compressor ON Temp ➲ Setting Temp+0.5°C(32.9°F) Compressor OFF Temp ➲ Setting Temp-0.5°C(31...
MAIN UNIT FUNCTION • DISPLAY Operation Indicator • On while in appliance operation, off while in appliance pause • Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on) Sleep Timer Indicator • On while in sleep timer mode, off when sleep timer cancel or appliance operation pause Timer Indicator • On while in timer mode (on/off), off when timer mode is off fan operates at low speed regardless of control 1. Compressor ON Temp ➲ Setting Temp+0.5°C(32.9°F) Compressor OFF Temp ➲ Setting Temp-0.5°C(31...
Service Manual
Page 41
... since the operation off, the operation mode is selected. • When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are turned off. Operation 27°C(80.6°F), it operates with Super-Low(while in sleep mode, with the medium airflow speed). • While compressor off, the...
... since the operation off, the operation mode is selected. • When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are turned off. Operation 27°C(80.6°F), it operates with Super-Low(while in sleep mode, with the medium airflow speed). • While compressor off, the...
Service Manual
Page 42
..., when the intake air temp is 0.5°C(32.9°F) or more above the setting temp, the compressor is turned off. When 0.5°C(32.9°F) or more below the setting temp, the compressor is turned on. Operation 2) Fuzzy Operation for Dehumidification • According to the intake air temp at that time. 26°...
..., when the intake air temp is 0.5°C(32.9°F) or more above the setting temp, the compressor is turned off. When 0.5°C(32.9°F) or more below the setting temp, the compressor is turned on. Operation 2) Fuzzy Operation for Dehumidification • According to the intake air temp at that time. 26°...
Service Manual
Page 47
...8226; To protect comp from heating to Oil Return System • In single(one) comp operation duration, another comp will turn off the comp. High Pressure Protction • If cycle pressure is too high(around 36.7 kgf/cm2), it will... turn off comp A Service Manual 47 Operating Step • Compressor step varies considering condition such as room temp,outdoor ...Outdoor Unit Outdoor Unit Two Comp algorithm • Inverter Comp is first priority and then Constant Comp is turning on .
...8226; To protect comp from heating to Oil Return System • In single(one) comp operation duration, another comp will turn off the comp. High Pressure Protction • If cycle pressure is too high(around 36.7 kgf/cm2), it will... turn off comp A Service Manual 47 Operating Step • Compressor step varies considering condition such as room temp,outdoor ...Outdoor Unit Outdoor Unit Two Comp algorithm • Inverter Comp is first priority and then Constant Comp is turning on .
Service Manual
Page 65
... error occurrence, if error is released, error LED is also released simultaneously. • To operate again on the occurrence of error code, be sure to turn off the power and then turn on. • Having or not of error code is different from Model.
... error occurrence, if error is released, error LED is also released simultaneously. • To operate again on the occurrence of error code, be sure to turn off the power and then turn on. • Having or not of error code is different from Model.
Service Manual
Page 67
... Guide ❇ Refer to the unit. • The connecting method of Indoor/Outdoor connecting cable (each color) • The P.W.B. Troubleshooting Guide Turn off the main power and wait until LED on the main power again. Ass'y (Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)...Replace IC01A. Ass'y Procedure 1) The input voltage of main power. • The voltage applied to electronic contorol device drawing & schematic diagram. Turn on outdoor PCB is made from the indoor unit? NO Check the voltage of power(AC208V/AC230V, 60Hz). • The voltage of power trans-...
... Guide ❇ Refer to the unit. • The connecting method of Indoor/Outdoor connecting cable (each color) • The P.W.B. Troubleshooting Guide Turn off the main power and wait until LED on the main power again. Ass'y (Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)...Replace IC01A. Ass'y Procedure 1) The input voltage of main power. • The voltage applied to electronic contorol device drawing & schematic diagram. Turn on outdoor PCB is made from the indoor unit? NO Check the voltage of power(AC208V/AC230V, 60Hz). • The voltage of power trans-...
Service Manual
Page 68
... (double key) inside the remote controller door is fault, it is driven by a low speed. Troubleshooting Guide Trouble 2 Product doesn't operate with the remote controller. Turn on main power. When the compressor stopped Indoor Fan is impossible to the delaying function for 3 minutes after stopped.
... (double key) inside the remote controller door is fault, it is driven by a low speed. Troubleshooting Guide Trouble 2 Product doesn't operate with the remote controller. Turn on main power. When the compressor stopped Indoor Fan is impossible to the delaying function for 3 minutes after stopped.
Service Manual
Page 69
... mode, compressor/outdoor fan is stopped. Service Manual 69 Check the electrical wiring diagram of relay in Outdoor PCB Ass'y. OFF DC 0V DC 12V Turn off main power. Check the Relay(RY-PWR, RY-START) for driving Compressor. • Check the voltage between Indoor and Outdoor. Operate Cooling Mode by... Between Micom(No. 50,51) and GND Between IC01M(No. 10) and GND Comp. Check the sensor for Indoor temperature and connector are don't operate Turn on the main power.
... mode, compressor/outdoor fan is stopped. Service Manual 69 Check the electrical wiring diagram of relay in Outdoor PCB Ass'y. OFF DC 0V DC 12V Turn off main power. Check the Relay(RY-PWR, RY-START) for driving Compressor. • Check the voltage between Indoor and Outdoor. Operate Cooling Mode by... Between Micom(No. 50,51) and GND Between IC01M(No. 10) and GND Comp. Check the sensor for Indoor temperature and connector are don't operate Turn on the main power.
Service Manual
Page 70
... motor of Indoor Fan Indoor Fan may be stopped when Indoor pipe(coil) termperature is lower than 79°F. (At that times, Defrost indicator is turned on) 70 Multi type Air Conditioner Check the interference of connecting wires between Indoor and Outdoor unit. Check the connecting condition and disconnection of Indoor...
... motor of Indoor Fan Indoor Fan may be stopped when Indoor pipe(coil) termperature is lower than 79°F. (At that times, Defrost indicator is turned on) 70 Multi type Air Conditioner Check the interference of connecting wires between Indoor and Outdoor unit. Check the connecting condition and disconnection of Indoor...
Service Manual
Page 78
... the liguid side valve and gas side valve are set to the low side of the gauge turn off the vacuum pump, and confirm that the gauge needle does not move(approximately 5 minutes after turning off the vacuum pump). 6. Confirm that the gauge needle has moved toward-76 cmHg (vacuum of 4 mmHg...
... the liguid side valve and gas side valve are set to the low side of the gauge turn off the vacuum pump, and confirm that the gauge needle does not move(approximately 5 minutes after turning off the vacuum pump). 6. Confirm that the gauge needle has moved toward-76 cmHg (vacuum of 4 mmHg...
Service Manual
Page 79
... amounts of 1.8 kg.m.(4.2kg.m/5.5kg.m.) - Use torque wrench to tighten the service port nut to be charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose. 5. Connect the charge hose which you are using a gas cylinder. 3. Because you disconnected from the gas side...
... amounts of 1.8 kg.m.(4.2kg.m/5.5kg.m.) - Use torque wrench to tighten the service port nut to be charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose. 5. Connect the charge hose which you are using a gas cylinder. 3. Because you disconnected from the gas side...