Nuova Simonelli Coffee Makers & Espresso Machines - Answered Questions & Fixed Issues

Hello Philip When you unscrew the burr bolts usually you do it to replace them. The lower burr holder plate must be stopped from spinning with 1 screwdriver put in the exit hole of the coffee and touching the burr holder flaps (usually they are 3 flaps). The screwdriver will block and you can freely work.

It sounds like the issue may be related to the water flow, as you mentioned that the machine is not filling with enough water. This could be caused by a malfunctioning water solenoid, pump, or manual water fill valve. To troubleshoot the issue, you may want to try the following steps:

1. Check the water supply: Make sure that the water supply to the machine is turned on and that there are no kinks or blockages in the water line.
2. Check the water filter: Check the water filter to make sure it is not clogged or needs to be replaced.
3. Check the water solenoid: If the water solenoid is not functioning properly, it may not be allowing enough water to enter the machine. Check to make sure that the water solenoid is receiving power and that it is opening and closing properly.
4. Check the pump: The pump is responsible for pumping water through the machine, so if it is not working correctly, this could be causing the issue. Check to make sure that the pump is receiving power and that it is pumping water through the machine.
5. Check the manual water fill valve: If the manual water fill valve is not working, this could be preventing water from entering the machine. Check to make sure that the valve is open and that water is able to flow through it.

If none of these steps resolve the issue, it may be best to contact a professional technician to diagnose and repair the machine.

It sounds like you may have a clog in the water line or the tubing that leads from the water tank to the 2nd group head of your coffee machine. To address this issue, you can try the following steps:

1. Disconnect the tubing from the group head and the water tank.
2. Flush the tubing with hot water to remove any buildup or debris.
3. Check the inlet and outlet holes on the group head to make sure they are not clogged or obstructed.
4. Reattach the tubing to the group head and the water tank, making sure it is securely connected.
5. Test the water flow to see if it is now flowing properly.

If the water still does not flow after following these steps, you may need to disassemble the group head and inspect it for any further blockages or damage. If you are not familiar with this type of maintenance, it is recommended to seek assistance from a professional.

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You can't run a coffee machine off a generator, it draws too many amps, and needs stable voltage.

Fixed it Myself

Red wire --> Cap1
White wire --> Cap2
Blue wire --> PWR Switch
Brown wire ---> Thermal Protection Switch

They have Service Manuals, but your 'Mia' machine doesn't exist, perhaps it isn't on the US market. https://www.simonelliusa.com/products/all-equipment-documents-archive.asp Service Manual for a Musica model https://www.google.com/search?q=Nuova+Simonelli+Mia+wiring+diagram ..

The oven should be connected to a dedicated circuit without coffee makers.

After I press "turn on" button heat light just flashes for a second then pump starts. Without any delay immediately after pump starts I can see all water running through 3-way solenoid valve to the drip-tray. It runs without interruption approximately 90 seconds until safety timer turns the pump off and "empty tank" light is turning on. Shut it down, turn it on and everything happens again.

Yes, normally the gigleur is clogged. it is located at the outflow of the flowmeter. you can remove this using hex screw anf clean the small hole.

This indicates your machine is not heating. there is a thermal fuse located in the tank heater wrapped in orange celopane with male and female terminals connected in series to the heater. replace this thermal fuse.

There must be a problem with the main board as it is suppose to react with the water level sensor on the tank. Is the pump running during extraction? if not, them motor is the problem. if pump working and no water coming out the grouphead, the gigleur is clogged. this gigleur is located on the out of the flowmeter.

There is a gigleur located at the end of the vibration pump. maybe this is clogged.

is it in the group or in the hot water dispenser? check if solenoid open.

open right side panel cover and you can see the tank and heater.on the heater you can see a thermodisc that you can reset. also check if water is going inside machine like if pump is working.

Most domestic coffee machines only have a small heater tank. I would suggest that after 5 cups, the tank cannot retain enough heat as the cold water from the supply has refilled it and it has to reheat again. If it wasn't doing this before, you may have to contact a service Company.

yes near the heater terminal

Press and hold the stop button then press the desired button you want to program at the same time to enter programming mode then press stop to desired quantity

It is better you replace the whole steam valve assembly and it is not so complicated to fix

Depends on the model if it is heat exchanger type or dual boiler type.