La Cimbali M200, Engineer'S Manual, Page: 76 / 102

English
71 EN
English
3. DIAGNOSTICS MESSAGES
FAULT
CODE
ACTIONS POSSIBLE CAUSES
DESCRIPTION
USB power-supply
malfunction
Group x boiler pressure
sensor out of range
(x = 1, 2, 3, 4)
Note: group 1 is the one at
the far left.
AC 24 V power supply
malfunction.
Clock malfunction
Power failure: group, EV,
milk pump
LCD display not connected
Slave micro processor
malfunction
Milk pump motor
overcurrent
Boiler temperature sensor
out of range
Group x boiler temperature
sensor out of range
(x = 1, 2, 3, 4)
Note: group 1 is the one at
the far left.
Time-out boiler heating -
45 MINUTES
• USB-port current-
consumption too high
• Sensor faulty
• Board failure.
•The glass fuse on the
CPU board is likely
broken.
• Contacts oxidised.
• Dead battery.
• Clock locked.
• Voltage drop on the
power network
• Break in wiring.
• Display fault.
• Consequence of
applied force
• Rotor blocked
• Pump motor faulty
• Sensor faulty
• Board failure.
• Disconnected
thermocouple
• Sensor faulty
• The safety thermostat
has tripped
• Heating element faulty
(wiring defect)
• Triac board fault
• Check the status of the USB port and its
connections in order to identify possible causes of
excessive consumption (e.g., short-circuit).
• Once the cause of the malfunction is fixed the
USB port should restore itself automatically and
return to normal operation.
• If the problem persists, replace the CPU board.
• Check wiring
• Replace the sensor
• Replace the board.
• Replace the fuse.
• Clean the contacts on the battery.
• Measure the voltage of the battery (3 V DC) and,
if necessary, replace it.
If the battery is OK try, with the machine turned off,
to remove it from the board and wait 2-3 minutes.
Then reinsert the battery and check that the clock
is working properly.
• Make sure that voltage is reaching the CPU board
• Check power supply (protection)
• Check wiring
• Check wiring
• If the problem persists, replace the Idea board.
• Check wiring.
• Check whether the circuit or pump is clogged.
• Replace the pump.
• Check wiring
• Replace the sensor
• Replace the board.
• Check wiring
• Replace the sensor
• Check if the safety thermostat has tripped and, if it
has, reset it.
• Check whether there are interruptions or detached
faston connectors in the wiring.
• Check that the boiler heating element is not
interrupted and if so replace it.
• Replace Triac board
020
(x)21*
023
024
025*
029*
030
041*
051
(x)51*
052