LG Therma V AHBW A0 Series - Page 66

Trouble Shooting Guide
- 66 -
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D-pipe sensor (Inv)
D-pipe sensor (Cons)
Air sensor
Condenser Pipe sensor
Suction Pipe sensor
Heat sink
sensor
•
Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
• Normal resistor : 200 kΩ/ at 25 ˚C (Unplugged)
• Normal voltage : 4.5 V DC / at 25 ˚C (plugged)
• Refer to sensor resistance table.
• Normal resistor : 10 kΩ/ at 25 ˚C (Unplugged)
• Normal voltage : 2.5V DC / at 25 ˚C (plugged)
• Refer to sensor resistance table.
• Normal resistor : 5 kΩ/ at 25 ˚C (Unplugged)
• Normal voltage : 2.5 V DC / at 25 ˚C (plugged)
• Refer to sensor resistance table.
• Normal resistor : 5 kΩ/ at 25 ˚C (Unplugged)
• Normal voltage : 2.5 V DC / at 25 ˚C (plugged)
• Refer to sensor resistance table.
Display
code
Title Cause of error Check point & Normal condition
10 k Ω
Unplugged Plugged
Check the resistance
Check the voltage
V
2.5 V DC
Unplug the sensor
on main PCB 1
Estimate the Voltage
of each sensor.
Is the voltage of the
sensor is 4.5 V DC /
2.5 V DC at 25 °C
Repair or Change the PCB.
Check the
Connector connection
Is it normal ?
Estimate the resistance
of each sensor.
Plug the sensor
on main PCB 1
Is the resistance of the
sensor is 200 kΩ / 10 kΩ
/ 5 kΩ at 25 °C ?
Yes
Yes
No
Correct connection
Yes
No
Change the sensor
No
Change the sensor
Check Flow Chart