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charles23Jul 29, 2025
What to do if Atlantic Water Heater shows Err W.7?
- HHoward SingletonJul 29, 2025
If your Atlantic Water Heater displays the error code Err W.7, it indicates either there is no water in the tank, or the ACI connection is open. First, fill the tank with water. Then, check the ACI circuit, including the AC connection, wiring, and water conductivity.