My machine pours steam out from the pressure valve, the machine gets very very hot ( to hot ) cant even touch the steam arm

Does the pump work? The steam and hot water are from the boiler pressure, but the coffee water circuit is separate and needs the pump.
Does the three way solenoid valve click when you try for coffee?
Why did you change the control box, what was the original fault?

Leave the valve open until it starts slowly hissing, then shut off valve and wait for the pressure to build up.

Samantha,

The steam function and the expresso use the same elements to create the steam but the valves will direct the steam to the expresso unit or the steam arm. Most likely you have a faulty valve. In most cases the valve will not open until the pressure gets to the right level. If you are just getting hot water out of the steam arm instead of steam via the expresso unit it most likely means that the valve is faulty. The valves can be replaced but is not easy. You will need to have the unit serviced or you could try to replace the valves. Make sure the flow meter is working before you replace the valves. You can check the operation of the flow meter by running the hot water cycle and making sure that you get the right amount of hot water. Good luck!

Most likely is a broken/failed "Steam Valve Cam" which actuates the steam/hot water needle valve. This part is made of plastic and prone to wear/failure.

That's leaking from the hoses coming out from the boiler,if the machine is new it should be still under warranty, may have to take it back to the service center.When making coffee the lines are under pressure and the water never have a chance to pass through the ground coffee.

I have one too and what I do is: turn all 3 switches on and while I'm waiting for the "ready" light to come on I go ahead and pour the milk into my frothing pitcher and prep my espresso basket.
After the "ready" light comes on I install my espresso basket and turn the handle to the "left" so no liquid starts coming out.
Next, I take an empty coffee cup and hold it under the steam nozzle and start opening the steam valve until I get only steam instead of a stream of hot water. Once you have steam, close the valve, put your pitcher of milk under the steamer and froth as usual to around 150 degrees.

Easiest way to get to it, remove the 2 screws in the bean hopper, and remove the hopper, there are a few screws under the water tank, this should give you access to the machine top. Check the end of the steam wand it might be blocked use a paper clip to clear it out. Run it under the faucet to make suree it is clear. Check the microswitch that is connected to the steam valve, It can be seen when you turn the knob to open the steam/hot water valve, make sure it is not stuck in the on position.

Hi there,
It seems to me that your pressure stat which is inside the base of your machine needs replacing. I would try to give it a good descale and if this doesn't do the trick then a new pressure stat is what you need. Prob around £20 if you buy it and do it yourself. www.theespressoshop.co.uk and just click on the little la pavoni machine for full parts list.

All the best

LaPavoniBoy

Boiler pressure gauge should be showing in the green zone which should get you 195+ degrees.

I think I've figured my yard sale EX 80 out. First, the way I think it works... in the tightly sealed boiler the water is heated to boiling, it must have a pressure release valve that sends the water/steam through the coffee and into the carafe. So dangerously hot and under pressure. Before opening the big round cap at the top (reservoir) relieve pressure at the steam tube valve (right side)

Here's how I made my first batch:

When opening reservoir always turn unit off, let reservoir cool a little between batches or you may get a cloud of steam in your face when pouring in water, might not be good for the heating element to shock it with sudden drastic temperature changes either.

Cleaned by running a couple of jugs of water through, cold water (4 on the supplied jug) into the reservoir all parts installed. I read somewhere online (not specific to any machine) not lukewarm water, if it's online it must be true... right?

Put coffee into filter basket/basket holder, matching amount of water in reservoir, 2 or 4 (markings on filter and jug). Espresso coffee should be very finely ground

Install all covers and the coffee basket/filter basket, close steam tube valve, install carafe and turn on the machine. Should get blast of espresso after a couple of minutes.

The steam tube (operated by the valve) seems a little cheesy on first try but I'll get better with practice. There's no steam to the tube until the reservoir starts to send steam to the coffee, the coffee kinda restricts the steam enough to send it to the tube. I was thrown a little because I didn't get steam when I was cleaning the thing, but I think that was because there was no coffee to block the flow. So I opened the valve at the start of the brew, steamed the milk, closed the valve and then the steam blasts through the coffee, tasted good.

Great $1 find.

Hope this helps.