When the air purifier's operating time reaches the filter's lifespan, 1440h, the timer button light will flash, signaling the user to replace the filter.

Step 1: Open the base cover anticlockwise.

Step 2: Take the old filter out.

Step 3: Remove the film from the new one.

Step 4: Install the new one into the machine.

Step 5: Close the cover based on the direction.

Step 6: Long press the timer button for 5 seconds to restart.

1) Check if the customer uses the adapter we provided. Its output is DC 12V 1A. Please don't use it to charge any products below 12V input.

2) Please check if the customer plugs the adaptor into the normal power sockets firmly.

3) If the air purifier turns on for a few seconds and then turns off again. Please kindly complain that the motherboard may be faulty. This situation is rare. We will report this to our product R&D department. Then ask for the correct delivery address to send him/her a new one.

1) The filter is too dirty. Please replace the filter.

2) The filter got wet or the machine has been used in a humid environment for some time. Please replace the filter.

3) Reuse the machine that has been stopped using for a long time. Please replace the filter.

4) The machine is near the high-temperature heating appliances. Please keep it away. 

5) If there is a burning smell, please stop using it immediately. Unplug the power supply. Please don’t hesitate to contact our customer service via support@tdbywae.com for help.

1) Please check if the filter is installed properly.

2) The filter is too dirty and has not been replaced for a long time. Please use the official filter to ensure the best fit and filtration. Don't use other brands or the effect will not be good.

1) Please check for any outlet gille or air intake obstructions. If so, please turn off the machine and remove them.

2) Please check if the filter is too dirty and has not been replaced for a long time. Please use the official filter to ensure the best fit and filtration. Don't use other brands or the effect will not be good. 

1) No, the filter can be cleaned with water. It will damage the effect and produce a strange smell. 

2) Please don't use the machine on watery floors or any humid environments such as the bathroom to avoid the risk of electric shock.

3) Replace the filter every 2-4 months. It varies depending on the area and ambient air quality. The replacement cycle may be reduced in heavily polluted areas, smoking areas, etc. 

When the customer gets the air purifier for the first time, please open the base cover to take the power cord out. It is highly recommended to use the one we provided. If he/she wants to use theirs, please check if the voltage corresponds to the local voltage.

1) The PM2.5 value(for reference only) will be displayed on the screen after turning it on for about 30 seconds.

2) The default mode is automatic with a mid-speed setting after turning it on.

3) If the air purifier turns on for a few seconds and then turns off again. We guess the motherboard may be faulty. This situation is rare. Please don’t hesitate to contact our customer service via support@tdbywae.com for free replacement with a video showing the problem clearly.