Master the diagnostic steps to resolve your coffee machine's heating timeout error permanently.
The E02 error indicates a heating timeout, meaning your boiler failed to reach temperature on time.
Watch for startup stalls, performance decay, or a cold steam wand despite the heating cycle.
A blown 150°C thermal fuse is the most frequent cause for heating circuit total failure.
Mineral buildup creates insulation and hot spots that damage the internal heating element over time.
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