Why does the filter sensor remain red? Shouldn't it be green?
Answer: -Check the upper tank filter, pre and post motor filters. Dirty filters can restirct airflow turning the indicator red. -Check to ensure there is good air flow at the bottom of the vacuum and at the upholstery hose. -Check to ensure there is not a clog in your vacuum. With no air flow the filter indicator will stay red. To check for clogs, please review the following: -Check for good suction at the end of the upholstery hose. If there is limited suction from the upholstery hose detach the hose from the machine. Insert a broomstick into the hose to push any obstruction through to the opposite end. -Check the lower hose for clogs. Remove the screw from the left side of the lower hose on the back of the unit and straighten this section of hose by pulling it down or lay unit out flat (the detent will need to be pushed twice) and roll unit on its side with the lower hose towards the top side. Look through the hose for obstructions. Push a broomstick through this lower hose to unclog. If you continue to experience difficulty, please take your machine for inspection to a local BISSELL Authorized Service Center. To locate your nearest BISSELL Authorized Service Center, go to the BISSELL Homepage at: http://www.bissell.com. Select the "Customer Service" tab at the top of the page and then select "Service Centers" from the drop down menu. Enter your zip code to perform your search. You can also locate a Service Center by phone, 24 hours a day, by calling 1-800-237-7691 and choosing option #1.