LG ABNW366KSA1 Service Manual page 61

11) Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65
Display
Title
code
41
D-pipe sensor (Inverter)
44
Air sensor
45 Condenser Pipe sensor
Suction Pipe sensor
46
D-pipe sensor (Constant)
47
Heat sink sensor
65
Ω
12) Troubleshooting CH51, CH60
Display
Title
code
EEPROM
60
Check sum
Check Point
• CH 60
1. Check the insertion condition of EEPROM.
2. Check the poor soldering
Cause of error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
Check Point
1. Estimate the resistance of each sensor.(Unplugged)
2. Estimate the voltage of each sensor.(Plugged)
3. If the resistance of the sensor is 0 kΩ or ∞, then sensor is abnormal.
If the voltage of the sensor is 0 V or 5Vdc, then sensor is abnormal.
Cause of error
• Check sum error
Cycle Troubleshooting Guide
Check point & Normal condition
• Normal resistor : 200KΩ / at 25°C (Unplugged)
• Normal voltage : 4.5Vdc / at 25°C (plugged)
• Normal resistor : 10KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
• Normal resistor : 5KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
• Normal resistor : 5KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
• Normal resistor : 200KΩ / at 25°C (Unplugged)
• Normal voltage : 4.5Vdc / at 25°C (plugged)
• Normal resistor : 10KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
Check point & Normal condition
• Check the PCB ASM P/No.
• Check the poor soldering.
Service Manual 61