Elba R410A Anleitung zur Fehlerbehebung Seite 85

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Troubleshooting Guide
- 89 -
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1) Troubleshooting CH01, CH02, CH06
10k
Check the resistance Check the voltage
V
2.5Vdc
01
02
06
Indoor air sensor
Indoor inlet pipe sensor
Indoor outlet 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/ at 25°C (Unplugged)
Normal voltage : 2.5Vdc / at 25°C (plugged)
Normal resistor : 5K/ at 25°C (Unplugged)
Normal voltage : 2.5Vdc / at 25°C (plugged)
Normal resistor : 5K/ at 25°C (Unplugged)
Normal voltage : 2.5Vdc / at 25°C (plugged)
Display
code
Title Cause of error Check point & Normal condition
Check Point
1. Unplug the sensor on Indoor unit PCB.
2. Estimate the resistance of each sensor.
3. If the resistance of the sensor is 10K/ 5K at 25°C, then sensor is normal.
4. If the resistance of the sensor is 0 K or , then sensor is abnormal. Change the sensor.
5. Plug the sensor on Indoor unit PCB and Power ON.
6. Estimate the voltage of each sensor.
7. If the voltage of the sensor is 2.5Vdc at 25°C, then sensor is normal.
8. If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal. Repair or Change the PCB.
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