Tornado Control Module 19214

The control module is the board that sits between the switches and the loads — brush motor, vacuum motor and solution pump. It is the part that decides what actually runs when a button is pressed. Part number 19214 is the genuine OEM module for the MWH-800 and Marathon 800 machines and the Marathon 1200. Read the number off your old module before ordering: the Marathon range used more than one module and they are not interchangeable. It also fits the Tornado 98167 20″ Marathon 800 carpet extractor (8 Gallon, 230V).

Compatible Models for the Control Module

This part fits the following Tornado machines:

• Tornado 98164 MWH-800 8-Gallon Self-Contained Carpet Extractor
• Tornado 98166 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98167 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98168 12 Gallon Self Contained Carpet Extractor
• Tornado 98168 20″ Marathon 1200 Carpet Extractor (12 Gallon, 115V) — all series

Module faults are recognisable because they are selective. One function stops while the others carry on: the brush will not run but the vacuum does, or the pump is dead while everything else is fine. A failure that takes out everything at once is almost never the module — look at the supply, the cord, the strain relief and the main switch first.

Before condemning a module, rule out what feeds it. A corroded connector, a failed switch or a cooked ring terminal will produce exactly the selective symptom a bad module produces, and all three cost a fraction of the board. Unplug and inspect the connectors on the suspect circuit: dull, dark or crusted terminals and insulation that has browned behind a lug are what you are looking for.

Water is what kills modules on this machine. The board lives in an enclosure on a machine that carries two tanks of water over live wiring, and a lid seal that has perished, a cracked enclosure or a leak from above puts solution where it does not belong. If you are replacing a module, find and fix the water path first or you will be replacing the new one too.

Heat is the slower cause. A module asked to run a motor that is drawing high current — a seized brush bearing, a dragging shroud, a vacuum motor with worn brushes — runs hot and ages fast. A module that failed early is often reporting a mechanical problem somewhere else.

Fit it with the machine unplugged at the wall. Photograph every connector before anything comes off, because a module refitted with two connectors swapped can damage what it drives. Seat each plug fully until it latches, route the harness clear of the vacuum motor housing, and test each function individually before putting the machine back into service.

Browse every assembly for this machine on the Tornado 98168 Marathon 1200 parts hub, and see the manufacturer’s range at tornadovac.com.

Frequently Asked Questions

What Tornado machines does the control module 19214 fit?

It is used on the Tornado 98164 MWH-800 8-gallon self-contained extractor, the 98166 and 98167 20″ Marathon 800, the 98168 12 Gallon Self Contained extractor and the 98168 20″ Marathon 1200 in all series. The Marathon range used more than one module, so read the number off your old board and call 763-535-0770 if it does not match.

How do I know the module has failed and not something feeding it?

A module fault is selective — one function stops while the others keep working. Check the connectors on that circuit first: dull, dark or crusted terminals and browned insulation behind a lug produce the identical symptom for a fraction of the cost. A failure that kills everything at once is almost never the module.

My module failed after a year — why?

Usually water or heat. The board sits on a machine carrying two tanks over live wiring, so a perished lid seal or a cracked enclosure puts solution where it should not be. Heat is the slower cause: a module driving a motor that is drawing high current from a seized bearing or a dragging shroud ages fast. Find the cause before fitting the replacement.

How do I order the Control Module (part# 19214) or get help?

You can add the Control Module (part# 19214) 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.