LG HMC036KDT1 Service Manual - Page 41
Outdoor, operate, Communication
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Electronic Parts Troubleshooting Guide 7. Outdoor unit does not operate at all. Check Outdoor Unit Items • Power Transformer (Outdoor unit) - Input Voltage - Output Voltage 4, • ICO1D(7812) Output (Indoor/Outdoor unit) 40 • IC02D(7805) Output (Indoor/Outdoor unit) 4, • IC01A(KIA7036, Reset IC) X01(8MHz) PCB Board Operation Check in Outdoor Content Remedy - About AC220V/240V±10% - Check the power voltage • Replace Trans - About AC14±3V • DC +12V - Replace IC010 • DC +5V • Replace IC02D • Replace faulty parts Turn off Main Power • Check the electrical wiring diagram of outdoor side. • Check the abnormal condition for the component of Compressor/Outdoor Fan Motor/4-way. • Check the "open" or "short" of connecting wires between indoor and outdoor. 8. Communication e • The control data can be transmitted or received between indoor and outdoor unit with one signal cable. - If the data be disturbed by any noise level and misconnection, the unit will be operated incorrectly. In this case, the indoor unit blinks the operation and operation LED on display and indoor fan, outdoor fan, COMP are not operated. • The unit can be reoperated by On/Off control of Remocon. Service Manual 41