I inherited an ec 460. It hasn't been used in a Lon.my.lmg time. I plugged it in and turned the knob to the boiler symbol. After the green ok light came on, I turned it to brew wiith the portofilter off. The shower screen was hot to the touch. Nothing happened. It doesn't seem to pull water from the tank into the boiler. I know this because the water level does not move. So, what does the problem sound like? Is it clogged? Is the boiler burned out?