User Manual ToLife TZ-K2 Air Purifiers for Home Large Room Up to 1095 Ft² with PM 2.5 Display Air Quality Sensor, Auto Mode, Timer, HEPA Air Purifier

My ToLife air purifier button control is not response because:
+ Check that the power plug is connected to a power outlet and the outlet is turned on.
+ Check that air purifier is assembled correctly.
+ Check to see if the power cord is damaged.
If it is, stop using the air purifier and connect Customer Support https://manualsfile.com/product/k34gn24qstv.html?page=36#contentPage

After replace the water filter, simultaneously press and hold the "timer button" and "fan speed button" for 3 seconds to reset the filter. The machine will emit a “beep” sound, and the filter replacement reminder will be turned off, indicating that the reset is successful.