Upright Vacuum: Red light always on

When the dirt sensor lights stays red constantly, dirty sensor eyes or a failed dirt sensor control board could be causing the problem.

Unplug the vacuum cleaner and clean the sensor eyes using a soft, dry cloth. Don't use cleaners or liquids as they can help speed the recoating of the sensor eyes, making it necessary to clean them much sooner than normal.

If the dirt sensor lights stays red constantly after cleaning the sensor eyes, you may need to replace the dirt sensor control board because the board may not be detecting sensor eye dirt signals correctly.

upright vacuum

These repairs may help solve your upright vacuum problem

Replace the vacuum suction motor

Replace the vacuum suction motor

The suction motor rotates the fan that creates suction by moving air from the intake at the cleaning head to the dirt collection chamber. If the motor doesn't create suction or doesn't run at all, replace it.

July 1, 2013
By Lyle Weischwill
How to replace a vacuum suction motor

If your vacuum loses suction and the hose and nozzle aren't clogged, the vacuum cleaner might need a new suction motor. The suction motor could also be the problem if the vacuum won't run at all. This easy-to-follow repair guide explains how to replace a canister vacuum suction motor in 30 minutes or less.

Repair difficulty
Time required
 15 minutes or less
Read more
Replace the vacuum hose

Replace the vacuum hose

The vacuum cleaner hose is constructed of reinforced vinyl. It sometimes has wires integrated into the hose. If the hose is torn or the integrated wires are broken, replace the hose.

Replace the vacuum bag

Replace the vacuum bag

The vacuum cleaner bag collects the dust and dirt that the vacuum sucks up. It also helps filter the exhaust air. Replace the bag when it's full, torn or damaged.

Clean the vacuum dirt sensor

Clean the vacuum dirt sensor

The dirt sensor detects the level of dirt and debris passing through the suction hose to the collection bag. Clean the dirt sensor when dirt and debris coat the lenses and the sensor can't accurately detect dirt level.

Replace the vacuum dirt sensor control board

Replace the vacuum dirt sensor control board

The dirt sensor control board receives signals from the dirt sensor and sends signals to the dirt sensor display. Replace the dirt sensor control board if it doesn't properly detect dirt sensor signals or doesn't send display signals to the dirt sensor display.

Symptoms common to all vacuum cleaners

Choose a symptom to see related vacuum cleaner repairs.

Main causes: damaged vacuum hose, clogged motor air filter, bad suction motor
Main causes: lack of power, bad power cord, drive motor failure, wiring failure
Main causes: weak suction motor, vacuum bag is full, clog in suction air path, dirty exhaust filter, leaky vacuum hose
Main causes: broken drive belt, damaged brush roll, tripped brush roll motor overload, bad brush roll motor, wiring failure

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Use the advice and tips in these articles and videos to get the most out of your vacuum.

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