- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Have you held buttons one and two down at the same time, or buttons two and three, or one and three? There is probably a reset sequence that you might give a try. Also look all around it for a rest button. it would be as big as the head of a pin in either black or grey.
When the filter monitor light remains on, it is time to check/clean the IFD™ filters and reset the filter monitor, if needed. With the unit powered on, insert the tip of a ball-point pen or paperclip next to the LED filter check light and hold for approximately 5 seconds until the light turns off (Fig. 3). Depending upon your individual usage (environment and hours used), you may need to check and clean the filters more or less frequently. If the IFD™ filters are cleaned before the filter monitor light turns on, the filter monitor should be reset at the same time.