Instruction/ maintenance manual of the product 230/208V LG Electronics
Go to page of 35
LG Room Air Conditioner SERVICE MANUAL LG CAUTION website http://www.lgservice.com • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
—2— 1. PREF A CE 1.1 SPECIFICATIONS ..........................................3 1.2 FEATURES AND BENEFITS ..........................4 1.3 CONTROL LOCATIONS .................................6 1.4 ADDITIONAL CONTROLS ..............................7 2.
—3— 1.1 SPECIFICA TIONS LP 12 0 C M 2 12 34 5 6 7 8 Digits 1,2 - LG Packaged Terminal Air Conditioner Digit 6 - Product Type Digits 3,4 - Unit Cooling Capacity C = Air Conditoner 07 = 7,000 Btu/h .
1.2 features Unit Features The PTAC has many features, some of which are different than those found on conventional PTAC units. The servicer must be familiar with these features in order to properly service the unit.
• Outdoor Air Temperature Switchover The unit is designed to control the electric heater interfacing with the outdoor temperature. When the outdoor temperature fall s to 20˚F below, it makes the compressor be off and the electric heater be turned on until the outdoor temperature is above 25˚F.
—6— 1.3 CONTR OL LOCA TIONS • OPERA TION ELECTRIC HEA TING MODEL COOLING ONL Y MODEL VENT CLOSE VENT OPEN TEMPERATURE CONTROL Set the Thermostat control to the desired temperature mark 5 (the mid-point is a good starting position).
1.4 ADDITIONAL CONTR OLS • REMO VING THE FR ONT GRILLE Additional controls are available after removing the front grille and option cover of control box.
• REMO TE/LOCAL CONTROL When remote/local switch #1 is on, it allow the unit to operate by the control of Remote Wall Thermostat. The unit control by knobs are not available. • ENERGY SA VER The energy saver switch #2 is on. This switch is set at continuous fan to provide continuous fan operation in cool or heat modes.
—9— 2.1 MECHANICAL P AR TS 2.1.1 FRONT GRILLE 1. Remove the front grille. (See Fig. 1) 2. To remove the front grille, pull out the bottom of the front grille and then lift up.
—10— 2.1.2 CONTROL BO X (Half-Disassembl y) 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the three screw which fasten the control box. (See Fig. 2) 3. Pull the control box from the barrier. (See Fig.2) 4. Discharge the capacitor by placing a 20,000 ohm resistor across the capacitor terminals.
Figure 7 —11— 2.2 AIR HANDLING P AR TS 2.2.1 HEA TER ASSEMBL Y AND CROSS FLO W F AN 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the control box assembly. (Refer to section 2.1.3) 3. Remove the 3 screws which fasten the net steel.
—12— 2.2.3 SHROUD 1. Remove the fan. (Refer to section 2.2.2) 2. Remove the screw which fastens the shroud. 3. Remove the shroud. (See Fig. 8) 4. Re-install the component by referring to the removal procedure, above. 2.3 ELECTRICAL P AR TS 2.3.1 OUTDOOR MO T OR 1.
—13— 2.3.5 PO WER CORD 1. Remove the control box. (Refer to section 2.1.2) 2. Disconnect the grounding screw from the control box. 3. Disconnect 2 receptacles. 4. Remove a screw which fastens the clip cord. 5. Separate the power cord from the control box.
—14— 2.4 REFRIGERA TION CYCLE 2.4.1 CONDENSER 1. Remove the brace and the shroud. (Refer to section 2.2.2) 2. Remove the 4 screws which fasten the shroud. (Refer to section 2.2.2) 3. Push forward the shroud and remove the 2 screws which fasten the condenser with the basepan.
—15— — Replacement of the refrigeration cycle. 1. When replacing the refrigeration cycle, be sure to discharge the refrigerant system using a Freon TM recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon TM .
—16— Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pinch-off tool capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.
—17— 3. INST ALLA TION 3.1 HO W T O INST ALL THE UNIT For existing sleeve, you should measure the wall sleeve dimensions. You can install the new air conditioner according to these installation instructions to achieve the best performence.
—18— 3.2.1 PREP ARA TION OF SLEEVE ASSEMBLE THE WALL SLEEVE • Raise the sleeve side panels to upright position as shown on the right. • Place sleeve upper on top of side panels. • Fasten the four screws as shown on the right. • Assemble drain kit.
—19— 3.2.3 UNIT INST ALLA TION 1. Remove the shipping screw from the ventilation door. (See Fig. 17) 2. Remove the front gille by pulling it out at the bottom to release it, then lift it up along the unit top front. (See Fig. 18) 3. Slide the unit into the wall sleeve and secure with 6 screws through the unit flange holes.
—20— P erpendicular 20 A T andem 15 A Large T andem 30 A 230/208 v olt receptacle configuration CAUTION 1. Do not use an extension cord with this unit. 2. When the unit is in the OFF position, the power supply to the electrical controls. 3. Disconnect the power to the unit before servicing the unit.
4. PERFORMANCE D A T A —21— V oltage (V) Cooling Data Cooling Capacity (Btu/h) Cooling Amps (A) Cooling Power (W) EER (Btuh/Watt) Moisture Removal (Pts/h) Airflow Indoor CFM (W et) @0.3ESP (Hi) Indoor CFM (W et) @0.3ESP (Lo) Indoor CFM (Dry) @0.3ESP (Hi) Indoor CFM (Dry) @0.
—22— Model LP120CEM T emperature Outdoor Air Return Air T otal Wattage Dry Bulb Wet Bulb Input Min M a x Rating W attage 1045 1090 85 1050 1180 80 1055 1180 75 1060 1180 100 70 1055 1180 65 1050 1.
—23— Model LP090HM* LP120HEM T emperature Outdoor Air Return Air T otal Wattage T otal Wattage Dry Bulb Wet Bulb Input Input M i n Max M i n Max Rating W attage 810 850 1120 1145 85 830 935 1120 1.
—24— Cooling change of temperature - Air Conditioners Room Air Room Air LP120CEM Dr y Wet T emperature Across Bulb Bulb Indoor Coil ( ∆ T) M in Max Rating Btu/h 11700 12000 Rating CFM 3 0 0 3 3 .
—25— Cooling Ampere Chart - Air Conditioners Cond Inlet Air Te mperature Rating Ampere 100 95 90 85 80 LP120CEM Model Amperage M i n Max 4.8 5.2 5.
—26— 5. TR OUBLESHOO TING GUIDE 5.1 OUTSIDE DIMENSIONS 1,066mm(42") 505mm(20") 406mm(16") 406mm(16") 5.2 PIPING SYSTEM Following is a brief description of the important components and their functions in the refrigeration system.
—27— 5.3 TR OUBLESHOO TING GUIDE In general, possible trouble is classified in two causes. The one is called Starting Failure which is caused from an electrical defect, and the other is Ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application.
—28— Fails to Start Check of circuit break er and fuse. Gas leakage of f eeler bulb of thermostat Check of control s witch. Only f an f ails to star t. Improper wiring. Def ect of f an motor capacitor . Irregular motor resistance ( ). Irregular motor insulation ( ).
—29— —29— COMPLAINT CAUSE REMEDY Check voltage at outlet. Correct if none. Check voltage to rotary switch. If none, check power supply cord. Replace cord if circuit is open. Check switch continuity. Refer to wiring diagram for terminal identification.
—30— NAME PLATE RATING MINIMUM MAXIMUM 208/230V 187V 253V COMPLAINT CAUSE REMEDY Check voltage. See the limits on the preceding. page. If not within limits, call an electrician. Check the wire connections, if loose, repair or replace the terminal.
—31— COMPLAINT CAUSE REMEDY Check the voltage. See the limits on the preced- ing page. If not within limits, call an electrician. Check overload, if externally mounted. Replace if open. (If the compressor temperature is high, remove the overload, cool, and retest.
—32— 6. SCHEMA TIC DIA GRAM HEA TER ASSY HEA TER FOR E/HEA TER MODEL INDOOR PIPE THERMISTOR INDOOR AIR THERMISTOR FDC REMOTE THERMOST A T EXTERNAL TRANS CF CAP ACIT OR CAP ACIT OR P/NO:3854A20196A.
—33— 7. EXPLODED VIEW C D F E A B 552111 35211A 346810 152302 359011 753000 W50400 152302 135312 149410 237200 237204 238310 W0CZZ-1 W0CZZ-2 264110 263230-1 W50400 W6640 249951 268714 237200 35421.
—34— 8. REPLA CEMENT P AR TS LIST PART NO. DESCRIPTION REMARK LOCATION NO . LP090HEM LP120CEM LP120HEM A 249951 CONTROL BOX,ASM(INDOOR) 4995A20466U 4995A20463W 4995A20463U 264110 POWER CORD ASM 64.
P/No.: 3828A20308H May, 2006 Printed in Korea.
An important point after buying a device LG Electronics 230/208V (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought LG Electronics 230/208V yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data LG Electronics 230/208V - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, LG Electronics 230/208V you will learn all the available features of the product, as well as information on its operation. The information that you get LG Electronics 230/208V will certainly help you make a decision on the purchase.
If you already are a holder of LG Electronics 230/208V, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime LG Electronics 230/208V.
However, one of the most important roles played by the user manual is to help in solving problems with LG Electronics 230/208V. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device LG Electronics 230/208V along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
