| Unit does not turn on when pressing ON/OFF button | • The unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off. |
| • Check the plug fuse. |
| • Timer is set. |
| The unit changes from COOL/HEAT mode to FAN mode | • The unit may change its setting to prevent frost from forming on the unit. Once the temperature increases, the unit will start operating in the previously selected mode again. |
| • The set temperature has been reached, at which point the unit turns off the compressor. The unit will continue operating when the temperature fluctuates again. |
| The indoor unit emits white mist | • In humid regions, a large temperature difference between the room’s air and the conditioned air can cause white mist. |
| Water drops from the indoor unit | • Dripping water may generate on the surface of the indoor unit when cooling in a relatively high humidity (RH more than 80%). Adjust the horizontal louver to the maximum air outlet position and select HIGH fan speed. |
| Both the indoor and outdoor units emit white mist | • When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated from the defrosting process. |
| The indoor unit makes noises | • A rushing air sound may occur when the louver resets its position. |
| • A squeaking sound may occur after running the unit in HEAT mode due to expansion and con- traction of the unit’s plastic parts. |
| Both the indoor unit and outdoor unit make noises | • Low hissing sound during operation: This is normal and is caused by refrigerant gas flowing through both indoor and outdoor units. |
| • Low hissing sound when the system starts, has just stopped running, or is defrosting: This noise is normal and is caused by the refrigerant gas stopping or changing direction. |
| • Squeaking sound: Normal expansion and contraction of plastic and metal parts caused by temperature changes during operation can cause squeaking noises. |
| The outdoor unit makes noises | • The unit will make different sounds based on its current operating mode. |
| Dust is emitted from either the indoor or outdoor unit | • The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity. |
| The unit emits a bad odor | • The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations. |
| • The unit’s filters have become moldy and should be cleaned. |
| The fan of the outdoor unit does not operate | • During operation, the fan speed is controlled to optimize product operation. |
| Operation is erratic, unpredictable, or unit is unresponsive | Interference from cell phone towers and remote boosters may cause the unit to malfunction. In this case, try the following: |
| • Disconnect the power, then reconnect. |
| • Press ON/OFF button on remote control to restart operation. |
| Poor cooling performance | Temperature setting may be higher than ambient room temperature |
| • Lower the temperature setting |
| The heat exchanger on the indoor or outdoor unit is dirty |
| • Clean the affected heat exchanger |
| The air filter is dirty |
| • Remove the filter and clean it according to instructions |
| The air inlet or outlet of either unit is blocked |
| • Turn the unit off, remove the obstruction and turn it back on |
| Doors and windows are open |
| • Make sure that all doors and windows are closed while operating the unit |
| Excessive heat is generated by sunlight |
| • Close windows and curtains during periods of high heat or bright sunshine |
| Too many sources of heat in the room (people, computers, electronics, etc.) |
| • Reduce amount of heat sources |
| Low refrigerant due to leak or long-term use |
| • Check for leaks, re-seal if necessary and top off refrigerant; contact an authorized service provider |
| SILENCE function is activated |
| • SILENCE function can lower product performance by reducing operating frequency. Turn off SILENCE function. |
| The unit is not working | Power failure |
| • Wait for the power to be restored |
| The power is turned off |
| • Turn on the power |
| The fuse is burned out |
| • Replace the fuse |
| Remote control batteries are dead |
| • Replace batteries |
| The unit’s 3-minute protection has been activated |
| • Wait three minutes after restarting the unit |
| Timer is activated |
| • Turn timer off |
| The unit starts and stops frequently | There’s too much or too little refrigerant in the system |
| • Check for leaks and recharge the system with refrigerant; contact an authorized service provider |
| Incompressible gas or moisture has entered the system |
| • Evacuate and recharge the system with refrigerant; contact an authorized service provider |
| The compressor is broken |
| • Replace the compressor; contact an authorized service provider |
| The voltage is too high or too low |
| • Install a manostat to regulate the voltage; contact an authorized service provider |
| Poor heating performance | The outdoor temperature is extremely low |
| • Use auxiliary heating device |
| Cold air is entering through doors and windows |
| • Make sure that all doors and windows are closed during use |
| Low refrigerant due to leak or long-term use |
| • Check for leaks, re-seal if needed and top off refrigerant; contact an authorized service provider |