Bosch WGG244A9GB error E:30 / -20

Bosch lists a defective solenoid valve, too much detergent, or water added to the machine during operation.

Cause 1 of 3Water was added to the machine while it was running. Source: 18 Troubleshooting, pp. 44–45

First checkDo not add extra water while the machine is operating.

Causes and checks

  1. Water was added to the machine while it was running. Source: 18 Troubleshooting, pp. 44–45

    1. Do not add extra water while the machine is operating.
  2. Too much detergent. Source: 18 Troubleshooting, p. 44

    1. When dosing by hand, use less detergent next time for the same load.
  3. The solenoid valve is defective. Source: 18 Troubleshooting, p. 44

    Bosch Customer Service Call Bosch Customer Service. Contact: bosch-home.co.uk/.

Service

If the checks above do not clear it, contact Bosch Customer Service, bosch-home.co.uk/. United Kingdom. Contact details are in the service directory supplied with the machine. Source: 20 Customer Service, p. 54

Other WGG244A9GB codes

Sources

  1. User manual and installation instructions, Washing machine WGG244A9GB. BSH Hausgeräte GmbH. Document 9001640606, revision A, 60 pages, en-GB. media3.bsh-group.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.

Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.

Applies to
WGG244A9GB (variant WGG244A9GB/01). United Kingdom.
Source
User manual and installation instructions, Washing machine WGG244A9GB, 9001640606 revision A
Last verified
Handbook
Bosch WGG244A9GB washing machine in Washers; all Bosch handbooks