Symptom:

The power switch is turned on, but the indicator light and display screen remain off. 

Possible Causes & Solutions:

1. Check whether the power plug is properly connected to the socket.
2. If the power supply is normal but the unit still does not power on:
   

1.  Use the supplied Allen wrench to open the electrical box located at the upper rear of the purifier.
   

1. After opening the top cover, use a Phillips screwdriver to open the electrical box. Check whether the circuit breaker inside the electrical box is switched on.

1. Reset the breaker if necessary. If the issue persists, contact authorized service personnel.

2. Weak Airflow / Insufficient Suction

Symptom:

The unit operates normally, but airflow is weak, suction power is insufficient, and the differential pressure reading is abnormal.

Possible Causes & Solutions:

1. Turn off and disconnect the power supply.
2. Check whether:

1. The air inlet or outlet is blocked
   
2. There are foreign objects inside the ducting
   
3. The filter elements are saturated

3. Clean any blockages or replace the saturated filter elements as needed.
4. If airflow remains weak after performing the above checks, the fan speed may be adjusted appropriately to increase air volume (if adjustable).

If the problem continues, contact technical support.

3. Control Panel Not Responding

Symptom:

After powering on the purifier, the indicator light and display screen turn on, but the control buttons do not respond.

Troubleshooting Method:

1. Turn off the equipment completely.
2. Wait 1 minute.
3. Restart the unit following the proper startup procedure.

If the issue remains unresolved, contact authorized service personnel.

Still need help?

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