| Does Not Cool At All |
1 |
Fan motor does not run. |
1 |
Poor contact of plug, broken wire, switches, or thermistor. |
1 |
Measure the continuity of cord or voltage with a tester. |
1 |
Replace any plug or part with poor contact or cord with broken drive. |
| 2 |
Fan motor failure. |
2 |
Check the broken connection in fan motor itself, burnt winding, and effect. |
2 |
Check with DC motor testing jig. If faulty, replace the motor. |
| 2 |
Fan motor is running but compressor does not operate. |
1 |
Variation of power source voltage and power source capacity. |
1 |
Supply voltage is not in range of +/-10% of rated. |
1 |
Use stabilizers for regulated power supply. |
| 2 |
Ambient condition. |
2 |
Compressor becomes over-loaded and stops with the actuation of overload relay. |
2 |
Check for any direct sunlight on air conditioner. |
| 3 |
Compressor running capacitor becomes poor or disconnected. |
3 |
Check electrical wire and compressor running capacitor with capacitor. |
3 |
Replace the defective capacitor. |
| 4 |
Defective refrigerant cycle or overload relay. |
4 |
Measure the voltage and current abnormality. |
4 |
Repair refrigerating cycle and overload relay. |
| 5 |
Defective compressor. |
5 |
Check compressor winding resistance and compare with specification. |
5 |
Replace any defective compressor. |
| 3 |
Compressor is operating but air is not cooled at all. |
1 |
Gas leakage. |
1 |
Measure the voltage and current abnormality. |
1 |
Check each section with halogen gas leak detector and repair it immediately when a leaking section is detected. |
| 2 |
Compressor with defective valve. |
2 |
Check compressor valve condition. |
2 |
Replace any defective component. |
| Noise & Vibration |
1 |
Compressor noise. |
1 |
Compressor with damaged piping suspension spring. |
1 |
Observe for any abnormal noise. |
1 |
Replace the compressor. |
| 2 |
Knocking noise. |
2 |
Blower fan or propeller fan hitting with foreign material. |
2 |
Check for any object around fan. |
2 |
Remove any foreign material from the system. |
| 3 |
Resonating noise due to vibration. |
3 |
Installation is not proper and parts of air conditioner are loose or internal parts of the compressor are damaged. |
3 |
Check the degree of vibration and installation with accuracy. |
3 |
Take proper measure to correct. |
| Water Dripping |
1 |
Water dripping inside room. |
1 |
Tilted unit installation. |
1 |
Check unit installation. |
1 |
If necessary, reinstall the unit. |
| 2 |
Air filter may be dirty or clogged. |
2 |
Check air filter. |
2 |
Clean dirty filter. |