User manual LG CD-321A

[. . . ] OPERATION DESCRIPTION 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 8-1 8-2 8-3 8-4 8-5 8-6 8-7 8-8 Outline of Air Conditioner Control Description of Operation Circuit Hi POWER Mode High-Temperature Limit Control Low-Temperature Limit Control Defrosting Operation Auto Restart Function Filter Check Lamp Safety Cautions Installation Diagram of Indoor and Outdoor Units Installation Indoor Unit Outdoor unit How to Set Remote Control Selector Switch How to Use Drain Pump Kit of Option Others ­1­ 8. TROUBLESHOOTING CHART 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 Troubleshooting Procedure Basic Check Items Primary Judgement Self-Diagnosis by Remote Control (Check Code) How to Diagnose Faulty Parts Troubleshooting for Indoor Unit Troubleshooting for Wiring (Interconnect Cable and Serial Signal Wire) Troubleshooting for P. C. Board Troubleshooting for Remote Control 10. PARTS REPLACEMENT 10-1 Indoor Unit 10-2 Outdoor Unit (RAS-18UAH-ES, RAS-18UA-ES) 10-3 Outdoor Unit (RAS-24UAH-ES, CD-321A) 11. [. . . ] Proceed them so that they do not touch any electrical or metal parts. ­ 43 ­ FILE NO. How to Set Remote Control Selector Switch When two indoor units ae installed in seperated rooms, there is no need to change the selector switch. <Remote control selector switch> · When two indoor units are installed in the same room or the adjacent two rooms, they may be controlled simultaneously with a single remote control. To prevent this, set either unit and its remote control to B setting. (Both units are set to A setting before shipment. ) · The remote control signal is not recived when the indoor unit setting is different from the remote control one. Set the remote control selector switch with the indoor unit. 1) Turn the circuit breaker of the main power switch off before setting the selector switch. Set the remote control selector switch with the remote control [B] is indicated on the liquid crystal display when setting remote control selector switch to B. [A] is not indicated on the display even if the selector switch is set to A. 1) Load the remote control with the batteries. 2) Press the [CHECK] button using something with sharp point. Program control The microcomputer operates as shown in Table 9-2-1 to control the air conditioner. If there are any operational problems, check whether or not the problems correspond to Table 9-2-1. If they correspond to the Table, they are not problems with the air conditioner, but they are indispensable operations to control and maintain the air conditioner properly. 9-2. Power supply voltage The line voltage must be AC 220 ­ 240V. If it is not within this range, the air conditioner may not operate normally. Table 9-2-1 No. 1 Operation of Air Conditioner When the main power supply is turned on, the OPERATION lamp on the indoor unit blinks. The indoor fan motor speed does not change in the Dry operation. Descriptions The OPERATION lamp blinks to indicate that power is turned on. If the [START/STOP] button is pressed, the lamp stops blinking. The indoor fan motor speed is automatically controlled in the Dry operation. 2 3 The compressor is not turned off even though The compressor has a function that it is not turned off for the room temperature is in the range that the 3 minutes after it is turned on even though the room temperature compressor is turned off. is in the range that the compressor is turned off. The compressor is not turned on and off even In the Dry operation, the compressor is turned on and off though the thermo control is operated in the automatically at the regular intervals, independent of the thermo Dry operation. lamp is indicated when the Heating operation starts. [. . . ] (4 screws 4 x 10) 3) Remove the side cabinet (front). (2 screws 4 x 10) 4) Disconnect the connecting cables after removing 7 screws on the terminal block. (10 screws 4 x 10) Remarks Top cabinet Electrical parts cover Side cabinet (Front) Side cabinet (Back) 2 Running capacitor for compressor Running capacitor for fan motor Magnet switch 1) Remove the capacitor band. (1 screw) 2) Disconnect the lead wires from the capacitor terminal. [. . . ]