Stiebel Eltron · Accelera 220 E / 300 E (earlier manual edition)
Stiebel Eltron Accelera 220 E / 300 E (earlier manual edition) error code E64
What it means
Temperature of the evaporator is less than -4°F. May be due to low air flow or a fan issue.
How it shows: Service (wrench) symbol flashing
What Stiebel Eltron says to do
Call Stiebel Eltron for more information if this error occurs.
Last checked 2026-10-03.
Safety first
- WARNING Electrocution: Do not insert objects through the grille into the interior of the appliance. Never spray the appliance with water. Never spray water into the appliance. (pg. 15)
- WARNING Injury: Maintenance work, such as checking the electrical safety, must only be carried out by a qualified contractor. (pg. 15)
From the manufacturer's manual for this series.