Stuck with a brew group stall? Here is how to restore your morning coffee.
The machine has lost positional feedback, meaning the piston cannot complete its internal cycle.
Physical obstructions or seized gears prevent the motor from reaching its required movement milestones.
An encoder wheel tracks motor pulses; if pulses fail, the system safety-halts the brew.
Start by manually cleaning the brew group before inspecting the motor shaft and gears.
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