LG Electronics LF300CP(LP-C303R20), LF480CE(LP-C483TA0) service manual Hand Over

Page 26

CAUTION

After the confirmation of the above conditions, prepare the wiring as follows:

1)Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover.

2)Provide a circuit breaker switch between power source and the unit.

3)The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the wires.)

4)Specification of power source

5)Confirm that electrical capacity is sufficient.

6)Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.

7)Confirm that the cable thickness is as specified in the power sources specification. (Particularly note the relation between cable length and thickness.)

8)Never fail to equip a leakage breaker where it is wet or moist.

9)The following troubles would be caused by voltage drop-down.

Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a overload protection device.

Proper starting power is not given to the compressor.

HAND OVER

Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning, temperature control, etc.).

If Error Code happens in the display of indoor.

 

Error Code

Error Contents

 

Checking Point

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor Air Sensor Open or Short

 

C0

 

 

 

 

 

1.Check Sensor Connection to PCB whether it's

 

 

 

 

 

 

connected well or not.

 

 

 

 

 

 

 

 

 

 

 

 

 

2.Replace it with new Sensor.

 

 

 

C1

Indoor Pipe Sensor Open or Short

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor Air Sensor Open or Short

 

 

 

 

 

 

C3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C4

Outdoor Pipe Sensor Open or Short

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C5

Communication failure between

 

 

 

 

 

1.Check connecting cable wiring order between

 

 

 

Indoor and outdoor unit.

 

 

Indoor and outdoor diagram.

 

 

 

 

 

 

 

2.Check all wire connector whether it is connected

 

 

 

 

 

 

 

or not.

 

 

 

 

 

 

 

 

 

 

 

 

3.Indoor AC PCB defects.(short inside).

 

 

 

 

 

 

 

4.Outdoor PCB defects.(short inside)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–26–

Image 26
Contents Floor Standing Type Air Conditioner Model LF300CPLP-C303R20 LF480CELP-C483TA0Contents Safety Precautions InstallationDefective installation stand Do not install, remove, or reDo not install the product on a OperationalBe cautious that water could not enter the product Do not step on or put anyting on the product. outdoor units Keep level even when installing the productUse two or more people to lift and transport the product Functions Indoor UnitFan Operation Remote ControlTimer Control Airflow Direction ControlOutdoor Fan Speed Control Outdoor UnitDeice Control Product Specifications CapacityOutdoor Unit LPUC303R20 LF300CP DimensionsIndoor Unit LPNC303R20 LF300CP Indoor Unit Outdoor UnitIndoor Unit LPNC483TA0 LF480CE Door Unit LPUC483TA0 LF480CEItems Air Outlet Vent Air Inlet Vent Control display Wiring Diagram OutdoorLF480CELP-C483TA0 Outdoor Off Timer Function Time Delay Safety ControlCooling Mode Operation Operation DetailsHeating Mode Operation Hot-Start Control Defrost ControlAir Purifying OperationAP-Z286RC0, AP-Z286R20, AP-Z488TC0 Soft Dry Operation ModeProtection of the evaporator pipe from frosting Child Lock functionAlarm mode display / only displayed while operating Energy SavingOutline of Operation Operation or CancelFunction for test operation FunctionCooling Only Model Installation of Indoor, Outdoor UnitSelection of the best location Refrigerant amount Indoor Unit installationOutdoor unit Installation Evaluation of the performance Connection of power supplyTest running Operate the unit for fifteen minutes or moreHand Over Troubleshooting Guide Failures to StartNo cooling and heating operation performed Only blowers do not workOnly outdoor fan does not work Only compressor does not workUnits discontinue after the operation started Unit is working, but not cooling and heating sufficiently Both blower and compressor are workingFault Cause Check/Correcitve Action Trouble checking by protection devicesCause for frequent stop and start operation Electronic Parts Troubleshooting Guide No cooling operation performedIndoor fan does not operate Airflow Direction does not operate Remote control does not operate Timer control does not operate. Replacement Micom Unit does not operateNo heating operation works No heater operation works Exploded View and Replacement Parts List Model LF300CPLP-C303R20W1WE Model LF480CELP-C483TA0 W0CZZ 435512 559010 546810 554030 Model LF480CELP-C483TA0 December No A20156T