The table below, developed through painstaking research efforts by the Brasilia and Rossi groups, offers solutions to problems arising during the operation of espresso coffee making machines.

PROBLEM CAUSE REMEDY
Water does not enter machine and pump is noisy 1. Water tap is closed
2. Mains water shortage
1. Open the tap.
2. Check water supply
Water pressure is higher or lower than 9 bar 1. The pump by-pass is incorrectly configured 1. Start the pump with the filter holder coupled and containing coffee residues. Adjust the by-pass screw while checking the pressure gauge.

2. Fit a blind filter holder with pressure gauge, then start up the pump; adjust the by-pass screw to 9 bar. Automatic levelling device does not refill boiler with water.
Automatic levelling device does not refill boiler with water 1-Der Fühler erfasst den Füllstand nicht:
2.M/V Einlaufblock öffnet nicht
3. Die Steuerung der automatischen Füllstandregelung ist defekt
4. Der elektrische Anschluss ist defekt
1. Reinigen / ersetzen
2. Ersetzen
3. Ersetzen
4. Prüfen
Automatic levelling device continues to fill boiler with water 1. Probe does not detect level.
2. Solenoid valve does not open.
3. Auto-levelling power unit is faulty.
4. Electric connection fault.
1. Clean/replace probe.
2. Replace valve-
3. Replace power unit.
4. Check connection.
Boiler pressure is low 1. Heater is not powered.
2. Main switch is faulty.
3. Pressure switch is faulty.
4. Safety thermostat is faulty.
5. Pressure gauge is faulty.
1. Check heater wiring.
2. Renew switch.
3. Renew switch.
4. Renew thermostat.
5. Renew gauge.
Boiler is pressurised while brewing heads are cold 1. Heater circuit is faulty.
2. Circulation reducer is clogged.
1. Clean circuit.
2. Clean reducer.
No water delivered by brewing head 1. Cigleur is clogged
2. Solenoid valve is blocked.
3. Solenoid valve is not powered.
4. Coil disconnected or core blocked on solenoid valve.
5. Diffuser filters are clogged.
1. Clean.
2. Renew valve.
3. Check valve connection.
4. Renew valve.
5. Clean/renew.
Filter holder is too far right 1. Coupling is worn.
2. Gasket are worn.
1. Renew coupling and insert gaskets.
2. Renew gaskets.
Old coffee in filter holder is too wet 1. Solenoid valve discharge fault. 1. Renew valve.
Coffee grounds in cup 1. Grind is too fine.
2. Pressure is greater than 9 bar.
3. Filter holes are dilated.
1. Adjust grind.
2. Adjust pressure.
3. Renew filter.
Coffee head is too light 1. Pressure is less than 9 bar.
2. Temperature is less than 88°C
3. Diffuser plates are clogged.
4. Filter holes are dilated.
1. Adjust pressure.
2. Adjust temperature.
3. Clean with blind filter/renew.
4. Renew filter.
Coffee head is too dark 1. Pressure is greater than 9 bar.
2. Temperature is greater than 95°C.
3. Diffuser filters are clogged.
1. Adjust pressure.
2. Adjust temperature.
3. Clean with blind filter/renew.
Coffee head is too thin 1. Diffusers are clogged.
2. Temperature is greater than 95°C.
3. Filters are clogged .
1. Adjust pressure.
2. Adjust temperature.
3. Renew filters.
Grinder motor is in good condition but grind is incorrect 1. Direction of motor shaft rotation is incorrect. 1. Invert the power phases.
Coffee drips from sides of filter holder 1. Filter holder holes are clogged.
2. Gasket is worm.
1. Clean filter holder.
2. Renew gasket.
Depressions in the coffee grounds in filter holder 1. Diffusers are clogged.
2. Pressure is not even
1. Clean with blind filter/renew.
Grinder-dispenser is noisy and overheats 1. Grinding blades are worm. 1. Renew blades.




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