My iRobot keeps saying error 26

Error 26 on a Roomba means the vacuum is experiencing insufficient airflow. Here are some things you can try:

• Clean or replace the bin filter
• Remove the bin
• Inspect the vacuum port
• Remove any foreign debris
• Press and hold the clean button for 20 seconds
• Wait 60 seconds
• Press the clean button once

You can also try opening the motor assembly and clearing dust.

Can you share your exact model number? The model number is printed near the left wheel, on the underside of the robot.

I have done all of the steps above that you recommended including taking a q tip and cleaning the fan blades. Still same problem

Fixed the error on my i7

Is the motor working too hard to turn the fan blade?

I opened up everything to get to the dowel of the fan blade.

I tried turning it by hand a bit firm when I did.

The dowel which has approximately 3 washers (two are together) on it.

After removing all of them, I put 1 drop of oil and graphite powdere onthe dowl where each one of the washers isand where they touch each other or the housing. (especailly important is where the dowel attaches to the plastic housing)

After this I put it all back together and turned it again by hand which moved more freely than before.

It has been working GREAT ever since.

Hope this helps