I recently dug out my old La Pavoni Millenium. I had put the machine up several months ago after it had developed some leaks and I decided it was time to replace gaskets and seals and get it back in working order. Before the leaks the machine had served me well for several years with no problems, I had serviced the machine as far as gaskets and seals before with no problems resulting. Before doing the gasket job I had filled the machine and turned it on, it heated up just fine except for the above mentioned leaks. After doing the gasket job (including the boiler gaskets) I plugged it up and left it about 10 minutes, upon returning to the machine it hadn't heated at all and was cool to the touch. The green light was on however. I turned the machine off and after unplugging removed the base to check all my connections. I had taken a photo of the wiring layout before dismantling and it checked out exactly like it had before the gasket job. The machine had developed some rust in the base from the leak issue (which I had cleaned up) so I checked each connector was clean and free of rust or corrosion. When I felt satisfied the connections were correct and clean I replaced the base and powered it up again. Now the machine did heat but not hot enough to produce a shot or any steam from the wand I pulled water through the head and it measured at 160 degrees F.
Anyone seen this sort of thing before that can help?

Dave

You might try measuring the water temp by taking the main cap off the boiler and filling the machine with water. Turn the machine on and measure the temperature of the water (in th boiler) if it's hot and boiling (200) then your wiring should be okay and you can check where there might be pressure loss.

Just a guess, but did the leaks relieve false pressure allowing the machine to heat up fully without bleeding and now that you have tightened up the boiler you are getting false pressure? Did the system heat up after you opened the steam wand?

The system never heated up enough to produce hardly any steam pressure through the wand.
I did take the top off and took a temp from directly in the boiler and I got 180 which I think is too low? I'm thinking maybe I have a problem with the pressure stat? It's possible that I could have unwittingly changed the setting on it while I was working in the base replacing the gaskets? Does that sound feasible?

Dave

By the way, thanks for the help guys!

It is pretty hard to change the setting on the LaP pstat accidentally, but it is possible that the micro switch on the pstat is not working right....possibly sticking or just sluggish, if it has any corrosion or gunk inside from the storage/non use period. It could be that a shot of electrical contact cleaner into the micro switch will liven it up and get it to turn on and off firmly and at the right point. So yes, I agree, something amiss with the pstat but likely not the actual setting on the collar.

Doug
You were spot on. I did as you instructed and all now is well and I am a happy camper!

Thanks everyone for the help!