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ECM Giotto Espresso Machine (original) Boiler wont fill

Hi my Giotto refuses to activate the pump to refill the boiler. I have just wired in a new Control Box. the pump works when I lift the brew head lever but it does not come on to fill the boiler. I have also replaced the level sensor in the boiler and rewired where the connections looks old. I have tested this circuit and I get the correct change in resistance when it detects water. Still no joy in getting the pump to activate when there is no water in the boiler. When I plug in I can hear the solenoid click indicating that is working. But when I measure the voltage across the terminals of the solenoid I only get 0.2V and it varies It is weird because the pump works with the brew lever and the solenoid appears to activate when the water level is low but why no pump?

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Lift the lever, but nothing happen - no sound, no action...

This happened to me. If you look closely at the lever you will see that the action of lifting the lever presses in a switch that is right behind the lever on the front of the machine. This switch starts the brew pump. One of the wires connected to this switch has rattled loose and lost contact. To fix this you will have to take the top of the case (the lid) off and then use long needle nose pliers to try to grab the loose wire and re-attach it to the switch. There is not much room to manuver, but I managed to do it eventually. Unplug the machine first, of course!

Posted on Sep 07, 2009

EsWorld
  • 1618 Answers

SOURCE: Help w/ ECM Giotto. pump doesn't turn on when pulling lever

Replace the magnets in the water tank, the reed switch is not reading one of them, most likely the safety or bottom magnet.

Posted on Feb 03, 2010

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1 Answer

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if this machine has a tank you fill for the the water it most likely will need some sort of lvl probe and inlet fill solanoid installed. best to check with manufacturer and see if your model originally had a model that could be hooked directly to water if not i would contact the company and see if they have the parts and if the control board in the machine has a fill circuit.

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Have you checked the Thermostat on the unit in the tank if it is stuck it will cause the tank to over heat and pop off the steam valve?? there should be some resettable overheat protectors as well. Has the preassure relief valve been replaced as well??

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hi. Im not sure excactly what is going on with your explaination about your machine, but I gather the the original mother board has died, and you have replaced it with a new one. It sounds like you have a water fill issue with your machine. If the boiler doesn't have enough water in it, then the pc board will shut the machine down. Ive never worked on a m39, but they are from the Faema corporation, and Faema/ La Cimbali electronics canbe very complicated. Dont now why they make such complicated electrics, cause there are hundreds of other brands with simple electrics.
If your boiler was empty, then the water fill cycle might be a timed cycle, and is shuting down before the water level has reached the water level probe inside the boiler. If this is the case, then once it has stopped, turn the machine off, wait 10sec, then turn it back on again and let it start the fill cycle over. You may have to repeat this a number of times until it has reached the water level probe inside the boiler. Some machines are designed to have a slow water fill, because when you draw hot water from the boiler for making tea, fresh cold water is pumped back into the boiler to replace what you have taken out, and if it fills too quick, then your steam pressure drops. So by filling slower, the machine will maintain its steam pressure. Good idea in theroy, but its only good for cafes that do 300 coffees per hour.
Im hoping that your machine is configered this way, cause it will probably just have to be turned on a few times until it has reached the water level probe as I explined in the begining. If you have a sight glass, you can check to see how high your water level is. If your level is correct, and its still not working right, then id recomend calling a repairer. There are number of things that could be wrong, causing your board to die. Faulty solenoids. switches, touch pads, pressure switches can cause main board issues. Hope all this helps with getting your machine working properly. Dazza Repairer

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Lift the lever, but nothing happen - no sound, no action...


This happened to me. If you look closely at the lever you will see that the action of lifting the lever presses in a switch that is right behind the lever on the front of the machine. This switch starts the brew pump. One of the wires connected to this switch has rattled loose and lost contact. To fix this you will have to take the top of the case (the lid) off and then use long needle nose pliers to try to grab the loose wire and re-attach it to the switch. There is not much room to manuver, but I managed to do it eventually. Unplug the machine first, of course!

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