Tornado Tempest System Control Board K46833200

The Tornado Tempest system control board (part# K46833200) is the master electronic board inside the TV400-W26-U cordless wide-area sweeper. Tacony lists it as Control Board, System, Tempest. It sits behind the control housing on the Electronics assembly and is the component every other electrical part on the machine reports to: it takes the 36V feed from the battery pack, reads the on/off microswitch and the operator controls, then decides what power reaches the brushroll motor circuit, the vacuum blower and the side-broom drive.

Because this is the system board rather than the motor board, a failure here usually looks like a machine that will not respond at all, rather than one motor misbehaving. A Tempest showing no lights, refusing to acknowledge a freshly charged pack, or powering up and shutting straight back down is pointing at this board far more often than at the battery.

Compatible Models for the System Control Board

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

Symptoms that point to the system control board

• The Tempest is completely dead with a known-good, fully charged 36V pack fitted.
• The machine powers on then drops out within a few seconds, repeatedly.
• Controls are unresponsive — the switch clicks but nothing reacts.
• One function works while others never energise, with the individual motors testing good.
• Intermittent operation that follows vibration rather than battery charge state.

Before replacing the board, rule out the cheaper parts around it: the microswitch (part# K66303310), its housing (part# K50609980), the battery pack (part# K24450750) and the charger (part# K24450530). This is the most expensive electronic component on the machine, and a failed switch imitates a failed board closely.

Fitting notes

The board is held to the electronics plate with M5 x 20 screws (part# K73031080), with an M4 x 16 screw (part# K73032050) at the microswitch. Remove the battery pack before opening the control housing — the board is live whenever a charged pack is fitted. Photograph or note the orientation of every connector before unplugging: the motor control board (part# K46833210) uses similar plugs and the two boards sit side by side.

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 system control board do on the Tornado Tempest?

It is the machine’s master logic board. It accepts the 36V supply from the battery pack, reads the power switch and operator controls, and routes power to the brushroll, blower and side-broom circuits. Nothing on the Tempest runs without it.

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

The clearest sign is a Tempest that is entirely dead, or that powers up and shuts straight back down, with a known-good charged pack fitted and the microswitch testing good. Check the switch, its housing, the pack and the charger first — a failed switch produces very similar symptoms at a fraction of the cost.

What models is the system control board (part# K46833200) compatible with?

The Tornado Tempest TV400-W26-U wide-area cordless carpet sweeper. This board is specific to the Tempest — it is not shared with the Tornado Strike or Zephyr, which use their own electronics.

How do I order the system control board (part# K46833200) or get help?

You can add the system control board (part# K46833200) 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.