LG APHWC501D - Page 18

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Heat Pump Water Heater with Demand Response Ready and Water Leak Detection Engineering Manual
Table 6: APHWC501D, APHWC801D, APHWC501L, APHWC801L Heat Pump Water Heater Wiring Diagram Legend.
Terminal Function
CN_DR_COM Communication with DR Sub-PCB
CN_DISP Display
CN1_IPM On-Boarding
CN_EEV EEV Control Output
CN_LGMV LGMV
RY_HEATER1_L Relay for Upper Heater
RY_HEATER1_N Relay for Upper Heater
RY_HEATER2_L Relay for Lower Heater
RY_HEATER2_N Relay for Lower Heater
RY_COMP Relay for Compressor
CN_IN_N1 Power Supply for Main PCB
CN_OUT_N1 Power Supply for CTA-2045 EcoPort
CN_AC_VALVE Shut Off Valve
CN_4WAY Reversing Valve
CN_INV_COM Communication with Inverter PCB
CN_HEATER_CT CT Sensor
CN_TANK_D Lower Water Tank Thermistor
CN_TANK_U Upper Water Tank Thermistor
CN_WIFI Wi-Fi
CN_WL Water Detection Sensor
CN_FLOAT Float Switch Input
CN_TEMP_AIR Mid-Pipe Air Thermistor
CN_DISCHARGE Discharge Thermistor
CN_SUCTION Suction Thermistor
WIRING DIAGRAM