I have problem with my Wega atlas espresso machine. When I turn on the machine water fills up but boiler doesn't heat and pressure doesn't build up. How can this be fixed?

If you're experiencing issues with the steam function on your Rancilio Silvia espresso machine, such as low steam pressure or no steam at all, there are a few possible causes and troubleshooting steps you can take to address the problem:

1. Check Water Level: Make sure the water reservoir is filled with water to an appropriate level. The steam function requires sufficient water to generate steam.
2. Purge Air from Boiler: If you're getting low air with no pressure from the steam wand, it's possible that there's air trapped in the boiler. You can try "purging" the air by turning on the steam wand and letting water flow through it until a steady stream of water comes out. This might help remove air pockets from the system.
3. Steam Wand Blockage: The steam wand could be partially blocked by milk residue or mineral deposits. Clean the steam wand thoroughly using a steam wand brush and ensure that the tip is clear.
4. Vent Valve: The vent valve on the top of the steam wand might be clogged. Try removing the valve and cleaning it to ensure proper steam flow.
5. Boiler Pressure: Low steam pressure could be a result of inadequate boiler pressure. Check the pressure gauge on the machine to ensure that the boiler pressure is within the recommended range. If the pressure is too low, you might need to adjust the pressure settings (if your machine allows for it) or seek professional assistance.
6. Steam Valve: The steam valve might be worn or malfunctioning, preventing proper steam flow. If the steam valve is not functioning as it should, it might need to be repaired or replaced.
7. Boiler Heating Element: If the heating element in the boiler is not functioning correctly, it could lead to low steam pressure. Check for any signs of damage or malfunction in the heating element.
8. Professional Service: If none of the above steps resolve the issue, it might be best to seek the assistance of a professional espresso machine technician. They can diagnose the problem accurately and perform any necessary repairs.

Remember that working on espresso machines involves potentially hazardous components and high-pressure systems. If you're not comfortable with any of the steps or if the issue seems complex, seeking professional assistance is recommended to ensure your safety and prevent further damage to the machine.

This issue can happen if the site inlet water pressure falls below 1 bar. The boiler fills but as you draw drinks it won't refill.
Do you service the machine ever and replace the water filter? Limescale build up may be another reason you are experiencing problems.

Trouble shooting guide here
Espresso Maintenance

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

Could be lack of water in the boiler, could be a faulty pressure stat or vent valve. Check the level probe first, then the vent valve and then the pressure stat. You can also use the manual fill to make sure water is getting to the boiler.

Yes the machine should not be left on for that long, it only takes a few minutes to heat up. It does not have an auto refill if the boiler is low on water.
If it heats up the water in the boiler for over an hour, it is safe to assume, that the water might at some point turn to steam, when you use it for the first time, it flushes out all the steam, and fills the boiler with water.

Usually on the left side of the boiler just above the element, follow the wires from the element unitl you get to the red reset switch.

Hi The first thing I would check is a reset button on the boiler. The next thing would be to do a continuity check or Ohms check on the heating element. If you get no reading you have a bad element.

It is possible, that the inlet solenoid sticking could caust the machine to fill when heating, because it test to make sure it needs water by turning on the solenoid. What gets me is the fact that it works fine after it heats up. On the top of the boiler there is a stainless steel probe with an electrical wire going to it, remove the probe and make sure that there is no debris or carbon build up on end. Clean with a wire brush.

I had the same problem of the boiler filling up all the way with water and the water was coming out of every hole in the machine. Turn the machine off, drain the boiler completely,
MAKE SURE VALVE #2 is CLOSED, this is the one under the drip pan all the way to the left. Turn on the water supply to the system and turn the system ON. The cup warmer on top will come on and stay on for anywhere between 10 to 20 minutes..... let it be,,, do not turn it OFF,, it will go off automatically. That should do it!


Hratch

Are you on Well water or distilled water?
If no then check the inlet solenoid valve, on the model of your machine it would be an electrical box with 2 pipe fittings on it, usually on the side of the machine.
Does the problem occur when the machine is turned off?
If yes then there is a leak either on the manual fill, or the exchanger in the boiler(happens when a machine freezes), or the inlet solenoid is leaking.

Does the pump run when the boiler is filling?
If the pump runs then the probe is calling for water and it needs to be replaced or cleaned with a wire brush, also check the electrical connector on the probe that could be damaged. If the problem is still happening then the auto level box is damaged.