User manual LG DA-3530A

[. . . ] Outdoor unit - refrigeration parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Outdoor unit - inverter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multi Controller - general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 13 14 15 Construction views Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Multi Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Indoor ­ Outdoor communication error. 10. Refrigerant overcharge. Does the inverter high pressure switch operate?Yes No Are the inverter high pressure switch parts normal?Yes No No Is the inverter IOL circuit normal?If defective, replace. See judgment flow of IPDU IOL operation circuit "E5". Is service valve fully open?Yes No No Is circuit wiring normal?No Check and modify wiring Does the cooling outdoor fan normally operate?Yes Are the connection, capacitor and fan motor normal?Yes No Repair defective position. Is there a problem with the outdoor unit heat exchanger?(1) Blockage of heat exchanger (2) Short circuit No Yes Are the high pressure sensor characteristics normal?Yes No Remove cause. Il circuito di bypass della SV2 è normale? Replace high pressure sensor. Is SV2 bypass circuit normal?Check connector (Thc sensor: PJ3) and characteristics of sensor resistance value. When sensor is normal, replace interface PC board of the Multi Controller. Check code [83] Gas temp. sensor (Thd) short circuit Operation cause Thd sensor open/short Open/short of Thd sensor was detected. Check connector (Thd sensor: PJ4) and characteristics of sensor resistance value. When sensor is normal, replace interface PC board of the Multi Controller. Check code [84] Gas temp. sensor (Thx) short circuit Operation cause Thx sensor open/short Open/short of Thx sensor was detected. Check connector (Thx sensor: PJ5) and characteristics of sensor resistance value. When sensor is normal, replace interface PC board of the Multi Controller. 49 Troubleshooting Diagnostic procedure for check code Check code [88] Communication alarm between Multi Controller and outdoor unit Operation cause 1. Error connection between Multi Controller and outdoor unit. Multi Controller PC board error (MCC-1210). Multi Controller does not recognise outdoor capacity. Check lead connection between indoor unit and Multi Controller. [. . . ] The total refrigerant charge must be calculated by the weight and within a tolerance of ± 50 g. Refrigerant charge amount shipped from the factory: Outdoor unit model name Charging amount (kg) Maximum gas charge (kg) DA-3530A 19. 0 36. 3 The amount of additional refrigerant is calculated from the actual length of the liquid pipe. To calculate the additional refrigerant volume, refer to the diagram and follow the steps below: (i) The main pipe length is taken as the addition of pipes X, Y and Z. (ii) The sub pipe length is taken as the addition of the two longest of the four (if 4 Multi Controllers). (iii) The branch pipe lengths must be individually calculated using the 8 longest pipes. [. . . ]