Display shows E10; unit does not heat and may not detect flow correctly.

Safety: Turn OFF power before removing any covers or filters.

Flow restoration steps:

• Verify that the cold water supply valve to the Eemax heater is fully open.
• Check household water pressure; Eemax units typically require a minimum pressure (e.g., 30 psi). If pressure is low, address plumbing or municipal supply issues.
• Remove the front cover and locate the inlet filter screen or strainer. Shut off water, remove the filter, and clean debris under running water.
• Inspect the flow sensor for scale or debris that could affect sensitivity. Clean as needed.
• Ensure that downstream fixtures are not overly restricted; extremely low-flow aerators may prevent the heater from activating. Test with a higher-flow fixture.
• Reassemble, open water supply, restore power, and test by opening a hot tap fully to see if E10 clears and heating resumes.

If adequate flow is confirmed but E10 persists, the flow sensor assembly may be faulty and should be replaced.