Tornado Tempest Motor Control Board K46833210

The Tornado Tempest motor control board (part# K46833210) is the drive-side electronic board on the TV400-W26-U cordless wide-area sweeper. Tacony lists it as Control Board, Motor, Tempest. Where the system board decides whether the machine runs, this board decides how the motors run: it switches and regulates the 36V supply going to the brushroll motor, the vacuum blower and the side-broom drive, and it is what protects those motors when a brush jams or a bearing drags.

That division of labour is the useful diagnostic. A machine that is completely dead is usually a system-board or switch problem. A machine that powers up normally — lights, controls responding — but will not drive one or more motors, or cuts a motor out under load and restores it after a rest, is pointing squarely at this board.

Compatible Models for the Motor Control Board

• Tornado Tempest Wide-Area Cordless Carpet Vacuum Sweeper — Model TV400-W26-U

Symptoms that point to the motor control board

• The Tempest powers up and responds, but the brushroll, blower or side broom never turns.
• A motor runs briefly then cuts out under load and recovers after cooling.
• One motor runs at reduced or surging speed with a fully charged pack.
• Two of the three drives work and the third is permanently dead, with that motor testing good off the machine.
• A burnt-electronics smell or visible scorching on the board face.

Test the motor itself before condemning the board — a seized brushroll bearing or a blocked blower draws the current that makes a healthy board shut a circuit down. If the motor spins freely by hand and reads correctly, the board is the next suspect.

Fitting notes

The motor control board mounts on the same electronics plate as the system control board (part# K46833200), secured with M5 x 20 screws (part# K73031080), spring washers and hex nuts. Remove the battery pack first. The two boards take similar connectors and sit next to each other, so label every lead as it comes off — a swapped plug between the two boards is the most common way a good replacement board appears dead on first power-up.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. Browse the full Tornado Tempest parts range, or see the Tornado Tempest TV400-W26-U machine. Manufacturer information is at tornadovac.com.

Frequently Asked Questions

What does the motor control board do on the Tornado Tempest?

It is the drive board. It switches and regulates the 36V supply to the brushroll motor, the vacuum blower and the side-broom drive, and provides the overload protection that shuts a motor down when it is jammed or dragging.

How do I know if my motor control board needs replacing?

The machine powers up and the controls respond, but one or more motors will not run, run at the wrong speed, or cut out under load. First confirm the motor turns freely by hand and is not jammed — a mechanical drag makes a healthy board shut the circuit down exactly as a faulty board would.

What models is the motor control board (part# K46833210) compatible with?

The Tornado Tempest TV400-W26-U wide-area cordless carpet sweeper. It is specific to the Tempest and is not interchangeable with the Tornado Strike or Zephyr electronics.

What is the difference between the motor control board and the system control board?

The system control board (part# K46833200) is the master logic board — it powers the machine up and reads the controls. The motor control board (part# K46833210) drives the motors. A completely dead machine usually points at the system board; a machine that runs but will not drive a motor usually points at this one.

How do I order the motor control board (part# K46833210) or get help?

You can add the motor control board (part# K46833210) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.