Fix Overheating Error in Dyson AM09

ID: 146724

Description:

Steps:

1. The red arrow indicates the area where we'll focus our cleaning efforts.
2. Start by powering the fan on. Then, switch it to the highest setting.
3. Use compressed air aimed at the crevice toward the back part of the fan (where the arrow is pointing). Keep shooting compressed air in at various angles up and down the slots until dust stops coming out.
4. Be ready for a lot of dust to come out as this area can get quite dirty over time! The dust can collect on the heating elements, insulating them and causing them to overheat.
5. Try the heating function to see if the error is still there. If this doesn’t work, proceed to the next steps.

6. To access the heating elements, you need to take off the top part that sits above the cylinder with small vent holes. The entire section above the separation line can be removed as a single piece.
7. To begin, take off the D-shaped screw cover located at the bottom of the oval by pulling it upwards. Once you remove the cover, you'll see a T8 screw that needs to be unscrewed to move forward.

8. To unlock the top part from the bottom part, twist it 15 degrees counterclockwise. The cylindrical base can be tough to grip, so use a belt as a strap wrench instead.
9. Some devices have a 'grippy' finish, which makes this easier.

10. If you're having trouble working with the cables, you can try removing the fan core from the tilt stage. To do this, unscrew the four T8 screws located beneath the fan core (two screws are visible at each of the maximum tilt positions). This will allow you to separate the fan core and make it easier to work with the cables.
11. Two T8 screws hold down the cover over this. The blade connectors have a little tab lock that must be pushed while pulling them apart.
12. The black wire is for the temperature sensors.
13. The white wire is for power (disconnects near the base, under a woven sleeve that slides out of the way. You don't need to touch the heatsink). The servo connector pulls apart easily.
14. The arrows show the 4 places to disconnect the wires so you can separate the top from the bottom. The white connectors under the sheath may also have a tiny lock tab that you need to push in while pulling them apart. Make sure to take note of how the wires run before take off the cover.
15. Make sure to mark the black wires before disconnecting so that reconnect them correctly when putting it back together. (Photos in reverse order).

16. There are two bolts holding the servo down (removed in this photo), and two holding the white plate down. It is not necessary to remove these, but might make things a little easier a couple steps from now.

17. Use a boxcutter to repeatedly score around the sides and top of the outside trim, in order to gain access to the heater cores. This is glued in place, but around the bottom it is a small amount of glue, so if you completely separate the top and sides you can break the glue at the bottom. The air slot core with heaters will slide out.
18. Be very careful here. Use the thinnest blade possible and repeatedly score rather than doing it forcefully. This is hard to without damaging it.
19. Once you remove the silver face plate, the black and white part you see simply lifts out from the back white shell.

20. Remove the two bolts (small arrows) then lift the heater slot cover (black plastic) from the side where the big arrows is pointing. You can then remove the heater cores (2nd picture). They can be turned out without bending any of the tabs. The same is true of the temperature sensors. The caked on (and toasted) dust can simply be vacuumed off.
21. You are done. Reverse the step to reassemble. I recommend white electric tape to put the part back on that you had to remove with the knife.