Cimbali M1 continuous beeping
- Thread starter iluvspd
- Start date
I realize that I am late to the party with this answer but It may help someone else.
La Cimbali Super-auto machines like the M1 are generally stable and reliable performers, nevertheless, on occasion, weird stuff can happen.
Generally, if you can't find an electro-mechanical problem with the machine (for example: Stuck valve, clogged port, dead heater, etc...) you can look to a board reset as a hail Mary solution.
More often than not, the board reset will restore the desired behaviour.
You will need to perform a board reset. To do this you must flip one of the pins on the boards DIP switch.
After the machine programming will need to be reset. Fortunately this is not too difficult and should not take more that 20 minutes or so.
I am uploading the tech manual with instructions on how to to do this. See Page 20.
La Cimbali Super-auto machines like the M1 are generally stable and reliable performers, nevertheless, on occasion, weird stuff can happen.
Generally, if you can't find an electro-mechanical problem with the machine (for example: Stuck valve, clogged port, dead heater, etc...) you can look to a board reset as a hail Mary solution.
More often than not, the board reset will restore the desired behaviour.
You will need to perform a board reset. To do this you must flip one of the pins on the boards DIP switch.
After the machine programming will need to be reset. Fortunately this is not too difficult and should not take more that 20 minutes or so.
I am uploading the tech manual with instructions on how to to do this. See Page 20.
- Thread starter
- #3
Thank you so much! Its been sitting for 2 yrs... decided to try with this new info
For group cleaning:
Check that the sliding hatch for the pills is closed.
Check the sensor and connectors for the hatch.
Once opened, the machine will not exit cleaning mode (reboot or not) unless the cleaning cycle is complete.
You can exit the cycle by pressing the top left key (typically set to single espresso). This action forces a "no grind espresso" ejecting any cleaning pills and somewhat rinsing the solution in the group valve.
I would then resume a group rinse or complete wash as the detergent should not be consumed by people.
If you still can't get the machine to stop the cleaning cycle, you may need to do a factory reset.
There is an option for that in the menu.
Reprogramming the machine does not take too long (about 20 minutes).
Check that the sliding hatch for the pills is closed.
Check the sensor and connectors for the hatch.
Once opened, the machine will not exit cleaning mode (reboot or not) unless the cleaning cycle is complete.
You can exit the cycle by pressing the top left key (typically set to single espresso). This action forces a "no grind espresso" ejecting any cleaning pills and somewhat rinsing the solution in the group valve.
I would then resume a group rinse or complete wash as the detergent should not be consumed by people.
If you still can't get the machine to stop the cleaning cycle, you may need to do a factory reset.
There is an option for that in the menu.
Reprogramming the machine does not take too long (about 20 minutes).
- Thread starter
- #5
Current situation: Dip sw 1-4, 6-8 off. 5 on
Beeps every 2 seconds
I don't think water is getting hot or even allowed into machine. (solenoid doesn't click). I've never seen water dispense from this unit (bought at restaurant auction)
As mentioned before, put in milk wash cycle with top off, beeps every 2 seconds. Display is backlit but blank.
No buttons respond
*** Thanks for the extra info, it led me to find the cleaning cover switch is missing the wiring (just the sensor remains. It has 2 wires to each side of the sensor pickup, and the cleaning lid has a plastic divider that sides between the sensor pickups. If i can determine which wires to jump I can bypass the sensor.
Have a schematic or picture of this sensor? TIA!
Beeps every 2 seconds
I don't think water is getting hot or even allowed into machine. (solenoid doesn't click). I've never seen water dispense from this unit (bought at restaurant auction)
As mentioned before, put in milk wash cycle with top off, beeps every 2 seconds. Display is backlit but blank.
No buttons respond
*** Thanks for the extra info, it led me to find the cleaning cover switch is missing the wiring (just the sensor remains. It has 2 wires to each side of the sensor pickup, and the cleaning lid has a plastic divider that sides between the sensor pickups. If i can determine which wires to jump I can bypass the sensor.
Have a schematic or picture of this sensor? TIA!
Attachments
- Thread starter
- #6
Update: I traced it back to the board, unplugged the harness. Also during this I disconnected all the plug. After reassembly it started displaying water cold. Great! Boiler heated up, shows 8-9 bar on guage. Selected Latte, grinder filled the chamber, compressed onto piston (displays its making a cup) but NO liquid is injected into chamber. Finishes after preset time and ejects a dry puck.
Checked lines.... boiler doesn't seem to be filling up. Have pressure @ pump inlet/outlet to 1st solenoid (has 8 Bar on guage) Have not heard pump spin.
Is there any logical progression to open this solenoid? I thought the boiler would not heat unless water level was ok? TIA!
Checked lines.... boiler doesn't seem to be filling up. Have pressure @ pump inlet/outlet to 1st solenoid (has 8 Bar on guage) Have not heard pump spin.
Is there any logical progression to open this solenoid? I thought the boiler would not heat unless water level was ok? TIA!
Last edited:
- Thread starter
- #7
12/20/24 update: User installation error. Wasn't wired to 220V - :/
I've made espresso shots, but selecting 16oz espresso doesn't fill the cup... just dispenses a shot. Checked/cleaned the solenoids and lines. If I select quick wash it does dispense water.
Easy way to check settings without technician key card?
I've made espresso shots, but selecting 16oz espresso doesn't fill the cup... just dispenses a shot. Checked/cleaned the solenoids and lines. If I select quick wash it does dispense water.
Easy way to check settings without technician key card?
Lalyvending
New member
- Mar 3, 2025
- 1
- 0
You can order part from Cimbali USA. They are pretty good at getting orders out to people quickly.
parts.usa@cimbaligroup.com
I've attached a recent parts manual for the M1
If you bypass the sensor by jumping wires, running washes will not be easy (as you will have to undo the byspass). These machines seize up without daily washes.
Cela peut être corrigé en ajustant le potentiomètre de contraste de l'écran sur la carte principale, situé près du connecteur du câble ruban de l'écran. Faites attention car il est très petit et il est facile de le tourner au-delà de la butée.
Essayez également de nettoyer le contact du câble ruban de l'écran avec une solution de nettoyage pour composants électroniques.
Enfin, si l'écran est mort, vous pouvez commander la pièce auprès de Cimbali USA. Ils sont assez efficaces pour envoyer les commandes rapidement.
parts.usa@cimbaligroup.com
J'ai joint un manuel de pièces récent pour le M1.
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This can be fixed by adjusting the display contrast potentiometer on the main board located close to the screen ribbon cable connector. Be careful as it is very small and it's easy to rotate it past the endstop.
Also try cleaning the screen ribbon cable contact with an electronics component cleaner solution.
Finally, if the screen is dead, you can order part from Cimbali USA. They are pretty good at getting orders out to people quickly.
parts.usa@cimbaligroup.com
I've attached a recent parts manual for the M1