LG A3UH363FA0 User Manual
Page 75
Service Manual 75
Troubleshooting Guide
Error
Title
Cause of error
Check point & Normal condition
code
44
Outdoor air sensor
45
Condensor pipe sensor
47
D-Pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
Normal resistor : 10K
Ω
/ at 25°C(77°F) (Unplugged)
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)
Normal resistor : 5K
Ω
/ at 25°C(77°F) (Unplugged)
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)
Normal resistor : 200K
Ω
/ at 25°C(77°F) (Unplugged)
Normal voltage : 4.5Vdc / at 25°C(77°F) (plugged)
❑
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
Check the resistance
Ω
Ω