LG LMN090HE Service Manual - Page 75
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Error code Title 44 Outdoor air sensor 45 Condensor pipe sensor 47 D-Pipe sensor Troubleshooting Guide Cause of error • Open / Short • Soldered poorly • Internal circuit error • Open / Short • Soldered poorly • Internal circuit error • Open / Short • Soldered poorly • Internal circuit error Check point & Normal condition Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged) Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged) Normal resistor : 5KΩ/ at 25°C(77°F) (Unplugged) Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged) Normal resistor : 200KΩ/ at 25°C(77°F) (Unplugged) Normal voltage : 4.5Vdc / at 25°C(77°F) (plugged) Ω Ω Check the resistance ❑ Check Point 1. Estimate the resistance of each sensor.(Unplugged) 2. Estimate the voltage of each sensor.(Plugged) 3. If the resistance is 0V or 5Vdc, then sensor is abnormal Service Manual 75