Bertazzoni Error Codes
& Diagnostics

Clean Group Coffee Machines The CM24 brew cycle counter has reached the factory-default cleaning interval of 50 cycles. The machine displays Clean Group and suspends drink functions until the Routine Cleaning procedure is completed. This is a scheduled maintenance reminder — not a fault. Low View details → Drawer Full Coffee Machines The CM24 has counted enough brew cycles to reach the programmed Drawer Full threshold (default 20 pucks, adjustable 1–35). The machine locks out all brew functions until the used grounds bin is emptied and correctly re-seated. This is a routine maintenance stop, not a hardware fault. Low View details → Error - Coffee Temperature Coffee Machines The CM24 control board has detected an invalid temperature reading from the coffee boiler NTC thermistor, or the brew boiler has failed to reach its target temperature within the allowed warm-up time. The machine is locked out and requires professional service. High View details → Error - Steam Temperature Coffee Machines The CM24 control board has detected an invalid reading from the steam boiler NTC thermistor, or the steam boiler has failed to reach its target pressure/temperature within the warm-up timeout. All steam, cappuccino, and hot water functions are locked out until the fault is resolved by a technician. High View details → Flow Meter Error Coffee Machines The Bertazzoni CM24 coffee system has detected no water flow through the flow meter turbine. The machine locks out all functions until the water supply is confirmed and the error is cleared. Cause is usually an empty tank, closed supply valve, or limescale-clogged turbine. High View details → Group Error Coffee Machines The CM24 brew unit has failed to complete its compression and ejection cycle within the expected time window. The machine locks out all drink functions. Cause is typically a coffee grounds jam in the piston mechanism or a stalled drive motor. High View details → Please Milk Clean Coffee Machines Two hours have elapsed since a milk-based drink was dispensed on the Bertazzoni CM24 automatic coffee system, triggering a mandatory hygiene cleaning cycle before operation resumes. Medium View details → System Off - Front Panel Open Coffee Machines The Bertazzoni CM24 coffee system detects that its front access panel is not fully closed and latched, disabling all machine functions until the panel is secured. Medium View details → Timeout Filling Up Broiler Coffee Machines The Bertazzoni CM24 coffee system boiler did not fill within the expected time window, indicating a water supply problem or an internal valve or flow meter failure. High View details → E Cooktops The induction control electronics have detected an internal hardware failure — typically a failed IGBT module, gate driver, or a processor exception — and have shut down the affected zones. Professional diagnosis is required before the cooktop can be used safely. High View details →