4 ms·

hold down back button and front button till it beeps release front button keep holding down back till it beeps again then you'll see entering engineering menu d

by alliao 4y ago

hold down back button and front button till it beeps release front button keep holding down back till it beeps again then you'll see entering engineering menu disconnect power restart this completely resets all memory

na85 4y ago
>this completely resets all memory Enabling the user to do what?
- alliao 4y ago
  oh my bad, since it wipes all memory, includes number of hours the filter(with RFID) is used, thus resetting the filter to 100% health again without giving it a brand new RFID to accumulate the hours on.