User manual LG DV6802P

[. . . ] VALVE & SENSOR FUNCTION AND OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PRESSURE TEST AND DEHYDRATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 12. ADDITIONAL REFRIGERANT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 13. [. . . ] M/C 1 A B 1 C D 0 No faults Units indicated failed the test. 2 A B C D 0 No faults 32 Units indicated failed the test. M/C 2 7. 4 RBM-Y1032F-PE, RBM-Y1042F-PE, 3-Pipe Multi Controller The combination of the display switch and the four 7 segment LED's (LD101 - LD104) indicate the diagnostic details. MCC - 1223 7 segment LED Unit A Unit B Unit C Unit D Capacity rank switches Display switch Multi controller control board Switch Position 7 Segment LED Display LD101 LD102 Indication LD103 LD104 0 1 Serial signal Fault codes Frequency instructions to the outdoor unit. Oil retrieval, Superheat control Defrost --- --- --- Receiving Sending to from unit B unit B --- Sending Receiving Receiving from from to unit A unit A outdoor unit --- Receiving Sending from to unit D unit D --- Sending Receiving Sending to to from outdoor unit C unit C unit [E] --- Fault code display (Normal [00] ) Refer to fault code section for details. Instructed demand frequency of Cooling or Heating [00 - 1F] Refer to the 2-Pipe Multi controller display conversion table for display switch position "2". Superheat Oil retrieval control unit B unit B Superheat Oil control retrieval unit A unit A Superheat Oil control retrieval unit D unit D Superheat Oil control retrieval unit C unit C 2 --- --- --- --- --- --- --- --- 3 Displays [dF] during defrost operation M/C operating mode: Heating [H-] Cooling: [C-]* --[c] [P] [P] [P] [P] [h] [h] [h] [h] [h] --[k] [A] [b] [c] [d] [A] [b] [c] [d] [H] Displays sensor temperature Refer to the 2-Pipe Multi controller sensor temperature conversion table (7. 2. 3). 4 Operation mode Outdoor unit operating mode:Heating [H-], Cooling [-C], Simultaneous Heating [Hc], Simultaneous Cooling [hC], Stop [--], Defrost [J-] --Displays unit being tested [ A b C d ] Normal display [0], Restart timer counting [1] Indicates faulty unit connection [A b C d] 5 6 7 8 9 10 11 12 13 14 15 Restart timer Circuit test PMV A PMV B PMV C PMV D ThA ThB ThC ThD ThX Displays the degree of PMV opening (0 - 240) as a Hexadecimal Code: [00] : Closed, [F0] : Fully Open * and Simultaneous Cooling/Heating [HC], Defrost [J-]. 33 7. 5 Inverter control board, 2-Pipe and 3-Pipe Outdoor Units. The combination of the dip switch SW1 and the four LED's (D1 ~ D4) indicate the inverter compressor speed and diagnostic details. MCC - 1251 D1 D2 D3 D4 SW1 ON 21 Inverter control board SW1 position 1 ON OFF OFF ON 2 ON ON OFF OFF Display information Inverter compressor demand frequency Inverter compressor actual frequency Fault code indication Fault indication sequence 7. 5. 1 Inverter compressor speed indication LED Binary display XXXX XXOO XOXX XOXO XOOX XOOO OXXX OXXO OXOX OXOO OOXX OOXO OOOX OOOO Inverter compressor freq. OFF 3 4 5 6 7 8 9 A B C D E F 0 Hz 30. 5 Hz 38. 1 Hz 42. 0 Hz 45. 8 Hz 53. 4 Hz 61. 0 Hz 68. 7 Hz 76. 3 Hz 83. 9 Hz 91. 6 Hz 103. 0 Hz 110. 6 Hz 121. 6 Hz 34 Heating operation maximum frequency. Cooling operation maximum frequency. 7. 5. 2 Inverter fault code indication. LED Display OOO¤ ¤OOO OOOO O¤OO OO¤O Fault indicated Inverter high pressure or compressor winding temperature Inverter compressor winding short circuit protection TE sensor open / short circuit (2-Pipe only) Inverter compressor overload protection Inverter circuit / compressor failure Remote controller fault code 21 14 18 1d 1F 7. 5. 3 Inverter fault indication sequence. LED Display XXXO XXOX XXOO ¤O¤¤ Fault indicated First failure Second failure Third failure System locked out X LED off O LED on ¤ LED flashing 7. 6 Control board communication diagram. Multi controller M/C (1) Interface control board I/F Inverter control board INV Multi controller M/C (2) Remote Controller Indoor Unit A few seconds 1 minute 1 minute 1 minute Remote controller fault code display time lapse for system malfunctions. Serial signal abnormalities: Between the I/F and the INV Between the M/C and the I/F Between the indoor unit and the M/C Between the remote controller and indoor unit INV abnormality: I/F abnormality: M/C and Indoor unit abnormality: More than 3 minutes. Wiring fault between I/D and M/C, or M/C and O/D Interface control board, or O/D Interface control board and O/D Inverter control board. This fault code is also displayed when the Inverter heat sink TRS thermal switch operates. FLOAT SWITCH OPERATION Indoor unit or Multi controller. Operation stops for Multi controller fault. 1. For an I/D fault, when other I/D units are operating, the O/D unit continues, the relevant M/C PMV closes and the faulty I/D unit fan operation continues. Indoor unit fan 2. Sensor open / short circuit. RETURN AIR TEMPERATURE SENSOR (TA) INDOOR HEAT EXCHANGER SENSOR (TC) Indoor unit fan stops. (PREHEAT DEFROST is displayed on R/C) Operation stops 1. O/D unit stops when the faulty Indoor unit is the only unit operating. Sensor open / short circuit. MULTI CONTROLLER FAULT 1. Refer to Multi controller diagnostics and fault codes. OUTDOOR UNIT FAULT Operation stops 1. Refer to Outdoor unit diagnostics and fault codes. INVERTER FAULT Operation stops 1. Inverter compressor fault (short circuit). Check the power supply, wiring, fuses, giant transistor, base drive board, smoothing capacitor, rectifier diode and compressor. 40 Diagnostic Funtions Notes Fault Code Sympton Status of Air Conditioner Operation stops 1. [. . . ] Before performing the pressure test or evacuation ensure that all Multi controller PMV's are in the fully open position as shown in the "Manual operation of valves" (10. 5). 11. 1 Pressure test. · Supply oxygen free nitrogen (OFN) gas at a pressure of 30kgf/cmG to the charge port on the suction gas side service valve. 11. 2 Evacuation and Dehydration. · When removing air and dehydrating refrigerant pipe work use an approved type of vacuum pump, do NOT use refrigerant to purge the air. 2-Pipe evacuation positions: 3-Pipe evacuation positions: (Refer to diagrams below). [. . . ]