User manual LG TDC70140E

[. . . ] CONDENSING DRYER SERVICE MANUAL CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE. MODEL : TD-C7014** Series IMPORTANT SAFETY NOTICE The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use. WARNING ! To avoid personal injury, disconnect power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks. RECONNECT ALL GROUNDING DEVICES If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened. IMPORTANT Electrostatic Discharge (ESD) Sensitive Electronics ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. [. . . ] Capacitor Measure capacitance of Terminal to terminal Capacitance value : 10 ±0. 2 µF 6. Pump Measure resistance of Terminal to terminal Resistance value : 205 ±10 Ω 15 7 COMPONENT TESTING TIPS Test procedure Measure resistance of the Following terminal 1) Door switch knob :open Terminal : “COM ”-“NC ” (1-3) Terminal : “COM ”-“NO ” (1-2) 2) Door switch push :Push Terminal : “COM ”-“NC ” (1-3) Terminal :“COM ”-“NO ” (1-2) Measure resistance of terminal to terminal Component 7. Door S/W Check result Remark The state that knob is Pressed is opposite to open condition Resistance value <1 Ω Resistance value ÷ Resistance value ÷ Resistance value <1 Ω COM NO NC 8. Lamp holder Resistance value : 80 Ω~100 Ω AC 230V, 15W 16 8 CONTROL LAY-OUT PWB ASSEMBLY DISPLAY LAY-OUT PWB ASSEMBLY LAY-OUT 17 9 WIRING DIAGRAM With ELB model ELECTRIC DRYER WIRING DIAGRAM BROWN BROWN BLACK BLACK BROWN ELB ELECTRONIC CONTROL 4 2 3 1 BLACK WHITE L1 BLUE N 1 2 3 TRANS 1 3 TR1 TR2 RLY2 RLY3 NA4 RLY4 YELLOW BLACK BLUE RED RD4 RED WHT3 WHT1 EARTH SKY BLUE BL3 2 1 ORANGE CW 4 2 INLET THERMISTOR BLUE 3 1 BROWN BROWN YL3 3 2 WHITE 1 1 2 BROWN OUTLET THERMISTOR 3 4 BROWN WHITE WHITE RLY1 BLUE CCW BLACK 1 2 WIRE COIL COM WHITE WHITH NO CLOSE GRAY LAMP 1 2 3 PINK 1 2 3 NC OPEN 1 2 3 2 1 1 2 3 BROWN SKY-BLUE 4 2 1 CAPACITOR DOOR SWITCH THERMAL PROTECT THERMAL FUSE WHITE WHITE OUTER COIL 2 1 INNER COIL MOTOR HEATER TH2 THERMOSTAT PUMP PUMP SENSOR MOTOR TH1 ELECTRODE SENSOR P/No. :3854EL4007B 18 10 TROUBLESHOOTING 1. This TEST should be used for Factory test/Service test. Do not use this DIAGNOSTICTEST other than specified. Activating the Heater manually with Door open may trp the Thermostat attached to the Heater, therefore do not activate it manually, (Do not press the door switch to operate the heater while the door is open) Activating the diagnostic test mode 1. Unit must be in Standby (unit plugged in, display off) 2. Press “POWER”while pressing “Iron-dry Buzzer”and “Anti-crease” simultaneously . Pressing the “START/PAUSE”button CHECKING ACTION DISPLAY CHECKING POINTS Check all LEDs for operation. None Electric control REMARK Once Motor Motor run counterclockwise. 70~245 Displays Moisture Sensor Operation:If Measured moisture sensor is contacted with damp Moisture Value cloth. The display number is below 180, in normal condition. 70~245 Displays Moisture Sensor Operation:If Measured moisture sensor is contacted with damp Moisture Value cloth. The display number is below 180, in normal condition. Current temperature Heater run(Display the temperature of low temperature themirstor located under door. ) Motor run clockwise. Heater run(Display the temperature of high temperature thermistor located in heater assembly. ) Pump run Twice Motor 3 times Motor + Heater 1 4 times Motor+Heater 1 +Heater 2 Motor off + Pump on Current temperature Water level in sump 5 times 6 times Motor 7 times 8 times Motor & Heater off Buzzer On Control Off Motor runs 70~237 Displays Moisture Sensor Operation:If Measured moisture sensor is contacted with damp Moisture Value cloth. The display number is below 180, in normal condition. ELB Sensor If ELB Sensor is in normal condition, ELE “ELE” is displayed. Auto Off Data Display - Tested under normal operation mode. - Press the “Quick” and “Anti-Crease” button as follows. No. of Button pressing 1 time 2 times 3 times 4 times Display Moisture data Temperature sensed by low temperature thermistor (located under door) Temperature sensed by High temperature thermistor (located in heater assembly) Remaining water data by water level sensor 19 10 TROUBLESHOOTING : LED displays “ ” in case of the door open. The door must be closed and start Button must be pressed for re-operation. When black out or irregular current occurs. - After removing ELB Connector, operate full time 1Cycle. [. . . ] Disassemble Harness by unscrewing 2 Earth screws and disassemble connectors. 3. Disassemble Holder and Spring by pressing down and pulling the low hook of holder. HOLDER 31 12 DISASSEMBLY INSTRUCTIONS 1. Disassemble Blower cover by unscrewing 2 screws. (Note : Make sure that hook is properly fit after assembling Cover Base Wrong assembly will cause abnormal noise. ) COVER BASE HOOK 2. [. . . ]