Error Code	Symptom	Fault Type	Guide
–	Brew basket does not stay in place or falls out easily	Worn or Damaged Basket Support Mechanism	View Details
–	Brew basket drips coffee onto hotplate after carafe is removed	Leaking Drip-Stop Valve	View Details
–	Brew basket handle or carafe handle feels loose or wobbly	Loose Handle Fasteners	View Details
–	Brew cycle does not start when switch is turned on (no heating, but power outlet is good)	Open Circuit in Control Path	View Details
–	Brew time is inconsistent between cycles (sometimes fast, sometimes slow)	Intermittent Flow Restriction or Thermostat Behavior	View Details
–	Brewing stops mid-cycle and does not resume	Overheat Protection Trip or Intermittent Thermal Cutoff	View Details
–	Carafe lid leaks when pouring coffee	Carafe Lid Seal Failure	View Details
–	Coffee maker does not power on at all (no lights, no heating)	Main Power Circuit Failure	View Details
–	Coffee tastes burnt or overly bitter	Excessive Brew or Holding Temperature	View Details
–	Coffee tastes weak or under-extracted even with correct coffee amount	Incorrect Brew Temperature or Flow Pattern	View Details
–	Drip-stop valve does not release coffee into carafe (coffee backs up in basket)	Stuck or Misaligned Drip-Stop Mechanism	View Details
–	Gurgling or loud boiling noises during brewing	Restricted Water Flow Causing Localized Boiling	View Details
–	Hotplate does not heat or keep coffee warm, but brewing works normally	Hotplate Heating Circuit Failure	View Details
–	Hotplate overheats and scorches coffee	Stuck-Closed Hotplate Thermostat	View Details
–	Machine body or base becomes excessively hot to the touch	Insufficient Thermal Insulation or Misrouted Wiring	View Details
–	Machine produces a humming sound but does not heat or pump water	Electromagnetic Noise Without Water Movement	View Details
–	On/off switch light does not illuminate, but brewing still works	Indicator Lamp Failure	View Details
–	Outlet arm (spray arm) is loose or falls off easily	Worn Outlet Arm Fitting	View Details
–	Plastic water reservoir develops cracks or leaks	Reservoir Structural Failure	View Details
–	Power light turns on but water does not heat or brew	Open Heating Element or Failed Thermal Cutoff	View Details
–	Steam escaping from top cover or around outlet arm	Steam Venting or Seal Leakage	View Details
–	Strong plastic or chemical smell/taste from new or recently serviced machine	Residue from Manufacturing or Replacement Parts	View Details
–	Thermal carafe does not keep coffee hot for long	Loss of Carafe Insulation or Lid Seal	View Details
–	Unit continues heating or brewing after being switched off	Stuck or Shorted Power Switch	View Details
–	Unit trips household circuit breaker or blows fuse when turned on	Electrical Short Circuit	View Details
–	Very slow brewing; full pot takes much longer than usual	Restricted Water Path from Limescale	View Details
–	Visible corrosion or white powdery deposits around heating block	Electrolytic Corrosion from Leaks or Spills	View Details
–	Visible steam or condensation inside base or electrical compartment	Steam Ingress into Electrical Area	View Details
–	Water drips into brew basket before machine is turned on	Siphoning or Leaking Check Valve	View Details
–	Water heats but does not flow up through the outlet arm (no dripping into brew basket)	Blocked Boil Chamber or Clogged Riser Tube	View Details
–	Water leaks from around the brew basket area	Brew Basket Overflow or Seal Failure	View Details
–	Water leaks from the bottom of the coffee maker during or after brewing	Internal Leak in Water Circuit	View Details
–	Water remains in reservoir after brew cycle; machine shuts off early	Premature Thermal Cutoff or Flow Blockage	View Details

Moccamaster Coffee Makers Error Codes

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