This is quite common on steam boiler when the level probe is not reached within a specific period of time. Reason is due to limescale buildup which restricts water flow...
You need to remove and descale the fill pipe to the steam boiler. If its very badly blocked, you can drill out the blockage with a 7/8mm drill bit and then leave it soak in descaling solution until its clear and you can blow through it. Also you will find a small restrictor between fittings somewhere back from the fill pipe (between the fill pipe and the fill valve). This is a small disc shape with a 0.8mm bore in the centre, you'll need to check that this is clear also, they are notorious for blocking up due to small size. You can clear this using some very fine wire or if you have the Schaerer expander baffle pen. Be careful not to lose this restrictor when loosening the brass fittings as it is extremely difficult to find if you drop it into the machine. Good luck
Thanks for help, found a small disc shape with a 0.8mm bore in the center blocked. See picture
Great, glad to see you found and cleared the blockage. Did this manage to fix the problem? If not please let me know. The Ambiente is one of the finest machines Schaerer ever produced and one of the most reliable.
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SOURCE: My shaerer expresso machine (ambiente) is giving
"level steam probe" occurs when it takes more than two minutes to fill the water in the steam boiler. The easiest solution is low water pressure to the machine. Does it have a water filter? replacing it will probably help. Other problems could be the fill valve is not opening fully and or scaled water lines going to the steam boiler. The first thing I would do is activate the hot water tap and look at the pressure. If the water is coming out slow then I know its a restriction to the machine.
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