Troubleshooting Guide
Error
Code
■Trouble Shooting
Error | Description | Cause of error | Check point & Normal condition | |
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| • Open / Short | Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged) | |
01 | Indoor air sensor | • Soldered poorly | ||
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged) | ||||
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| • Internal circuit error | ||
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| • Open / Short | Normal resistor : 5KΩ/ at 25°C(77°F) (Unplugged) | |
02 | Indoor inlet pipe sensor | • Soldered poorly | ||
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged) | ||||
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| • Internal circuit error | ||
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| • Open / Short | Normal resistor : 5KΩ/ at 25°C(77°F) (Unplugged) | |
06 | Indoor outlet pipe sensor | • Soldered poorly | ||
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged) | ||||
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| • Internal circuit error | ||
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10KΩ |
Ω |
2.5Vdc |
V |
Check the resistance / voltage
❑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 10KΩ/5KΩ at 25°C(77°F), then sensor is normal
4.If the resistance of the sensor is 0 KΩ or ∞, then sensor is abnormal. ➔ Change the sensor.
5.Plug the sensor onto the 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(77°F), then sensor is normal.
8.If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal. ➔ Repair or Change the PCB
Wall Mounted | - 72 - |