Display shows E01 and brewing will not start or stops immediately after pressing START.

Safety first: Unplug the Wolf Gourmet coffee maker before inspecting parts. Allow the unit to cool completely if recently used.

• Check reservoir seating: Remove the water reservoir, empty it, then firmly reseat it on the base. Make sure it is fully down and flush with the housing.
• Inspect reservoir bottom: Look for the small magnet/float or molded tab that interacts with the base sensor. Ensure it moves freely and is not stuck with scale or debris.
• Clean sensor area: Wipe the base area where the reservoir sits with a soft, slightly damp cloth. Remove coffee grounds, scale flakes, or other debris that may block the sensor.
• Refill and test: Fill the reservoir to at least the minimum level, reseat it, plug the unit back in, and attempt a brew cycle.
• If E01 persists: The internal reservoir level sensor or switch assembly may be faulty and typically requires disassembly of the base. This should be done by a qualified technician to avoid electric shock and damage to the housing.