E16 — HU Water Inlet/Outlet Temperature Over High

What does E16 mean?

This error indicates that the water temperature at either the inlet (Twi) or outlet (Two) of the Hydro Unit has exceeded 82°C for 5 seconds, triggering an overheating protection.

• Insufficient heat dissipation from the system.
• Reduced water flow due to blockages or pump issues.
• Incorrect system settings leading to excessive heating.

Click steps to track your progress.

1. 1

   Turn off the unit and allow it to cool down naturally.

2. 2

   Check for any obstructions around the outdoor unit (if applicable) that might impede heat dissipation.

3. 3

   Verify that the water circulation pump is running and there are no closed valves.

4. 4

   Restore power and restart the unit. If the error persists, contact a qualified service technician.