User manual LG A07AHB

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Manual abstract: user guide LG A07AHB

Detailed instructions for use are in the User's Guide.

 [. . . ] 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-ES3,  RAS-18UA-ES3) 10-3 Outdoor Unit (RAS-24UAH-ES3,  RAS-24UA-ES3)

11.  [. . . ] 8-5-8
LN
10

12 3
10

10

70 60

10

60

70

Earth line Power supply cord Connecting cable

Fig. 8-5-9
A07AHB / 18UAH-ES3 RAS-18UFP-ES3 / 18UA-ES3 RAS-24UFHP-ES3 / 24UAH-ES3 RAS-24UFP-ES3 / 24UA-ES3

· Hexagonal wrench : A (Unit : mm) Hexagonal wrench is required. 
A

Power source Maximum running current Plug socket & fuse rating Power cord

50 Hz,  220 ­ 240 V Single phase 16A 20A 4 mm2 (H07RN-F or 245 IEC 66) or 3. 5 mm2 (AWG-12) 18A

Fig. 8-5-7

CAUTION
· Wrong wiring connection may cause some electrical parts burn out. · Be sure to comply with local codes on running the wire from indoor unit to outdoor unit (size of wire and wiring method etc). · Every wire must be connected firmly. NOTE: Connecting cable · Wire type : More than 1. 5 mm2 (H07RN-F or 245 IEC66) or 1. 3 mm2 (AWG-16)

8-5-4. Remove the electric parts cover from the outdoor unit. Connect the connecting cable to the terminal as identified with their respective matched numbers on the terminal block of indoor and outdoor unit. When connecting the connecting cable to the outdoor unit terminal,  make a loop as shown in the installation diagram of indoor and outdoor unit,  to prevent water coming in the outdoor unit. Insulate the unused cords (conductors) from any water coming in the outdoor unit. Proceed them so that they do not touch any electrical or metal parts. 

­ 44 ­

FILE NO. 8-7-1

Hi POWER

FILTER

PRE. D

TEMPORARY button

Fig. Auto restart setting This product is designed so that,  after a power failure,  it can restart automatically in the same operating mode as before the power failure. 

Information
The product was shipped with Auto Restart function in the off position. <How to set the auto restart> · Press and hold the TEMPORARY button for about 3 seconds. After 3 seconds,  the electronic beeper makes three short beeps to tell you the Auto Restart has been selected. · To cancel the Auto Restart,  follow the steps described in the section Auto Restart Function of the Owner's Manual. Troubleshooting Procedure
Follow the details of 9-2. If there is no trouble corresponding to 9-2,  check whether or not there are faulty parts following 9-4. Incorrect cable connection between indoor and outdoor units The indoor unit is connected to the outdoor unit with 4 cables. Check that the indoor and outdoor units have been properly connected with terminals assigned the same numbers. If the connectors are not properly connected,  the outdoor unit will not operate normally,  or OPERATION lamp and TIMER lamp will blink (5Hz). Program control The microcomputer operates as shown in Table 9-2-1 to control the air conditioner.  [. . . ] Outdoor Unit (RAS-24UAH-ES3,  RAS-24UA-ES3)
No. 
1

Part name
Common procedure

Procedures
1) Stop the operation of the air conditioner and turn off its main power supply or remove the power supply cord. (4 screws 4 x 10L) 3) Remove 2 cord clamps (4 screws 4 x 22L) and disconnect the power supply cord and connecting cable after removing 6 screwson on the terminal block and 1 ground screw on the electrical parts base. (7 screws 4 x 10L) 5) Remove the front cabinet. (2 screws 4 x 10L) 6) Remove the side cabinet (4 screws 4 x 10L & 2 screws 4 x 14L)

Remarks
Top cabinet Electrical parts cover

Front cabinet

Side cabinet

4 screws 4 x 22L

2

Running capacitor for compressor

1) Perform the common procedure 1 2) Remove the capacitor band.  [. . . ]

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