Vision Washer Error Code Er:21

Er:21 means the washer has detected excess foam inside the drum during a cycle. The machine triggers this error to protect its internal components from damage caused by over-sudsing. It is most commonly caused by using too much detergent or a detergent not rated for high-efficiency washers.

Resetting the washer may clear the error code temporarily, but it will return if the underlying cause is not addressed. The washer's foam detection system will trigger Er:21 again as soon as excess suds are detected in a future cycle. Correcting detergent type and dosage is necessary for a lasting fix.

If the cause is simply excess or incorrect detergent, there is no repair cost involved, just a change in product and dosage. If a faulty sensor or control component is responsible, parts and labor costs could range from roughly $80 to $250 depending on the specific component and local service rates. A technician visit for diagnosis typically costs between $60 and $120.

Start by reducing the amount of detergent you use and switching to an HE-rated low-sudsing detergent if you have not already done so. Run a drum cleaning cycle to clear any soap residue that may have built up inside the machine. If the error continues after correcting your detergent habits, a technician may need to inspect the foam detection components.

You should not ignore the error and force cycles to continue without addressing the foam issue. Excess foam can work its way into the pump and motor area, potentially causing damage over time. Resolve the detergent issue first before resuming normal use of the machine.