Display shows E10; unit will not start and a lock or key icon may appear.

Safety: Ensure the unit is on a stable surface and unplugged before mechanical checks.

• Disable child lock: Refer to the Ewbank user manual. Typically, press and hold a specific button combination (e.g., power + mode) for several seconds to toggle the child lock.
• Check tank and handle interlocks: Many Ewbank carpet cleaners have micro-switches that detect when the handle is upright or when tanks are installed. Ensure the handle is in the correct operating position and tanks are fully seated.
• Inspect interlock plungers: Look for small plastic plungers or tabs that press on switches. Make sure they move freely and are not broken.
• Test again: After reseating components, plug in and try to start the unit.

If E10 persists, the interlock switch or control PCB input may be faulty and require replacement.