E21

For E21, brand is Bosch; appliance type is Dishwasher; meaning is The heat pump is blocked, verified against its source on 2026-08-04.

Brand: Bosch
Appliance type: Dishwasher
Error code: E21
Meaning: The heat pump is blocked.

Sourcebosch-home.com

Verified2026-08-04

Review by2027-08-04

DatasetAppliance fault and error codes

What the source says

See more Error Code E21 The heat pump is blocked. Reset power to breaker for 30 seconds. If not resolved, call Bosch Customer Support at 1-800-944-2904 for assistance. See more Error Code E22 The dishwasher filter is blocked.

— bosch-home.com, retrieved 2026-08-04

Source

bosch-home.comhttps://www.bosch-home.com/us/owner-support/dishwashers/error-codes

Last verified against source: 2026-08-04. Scheduled for re-check by: 2027-08-04. This page as Markdown · OKF concept · full dataset as JSON.