Question about Rancilio Epoca ST

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No lights on above the group head and no heating of water. No pressure and low water. Boiler does not get hot. Gauges are either low or 0. Tried the red reset button.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 1894 Answers

SOURCE: No Hot Water

Sounds like your Rancilio needs a service, this problem could be caused by the boiler not working correctly, possibly a leak from the boiler or a valve malfunction causing a drop in pressure.

Posted on Mar 17, 2008

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  • 1089 Answers

SOURCE: no water through group head

Hi
More than likely your 3 way valve is stuck. It is located behind the front panel and when the 2 screws are removed it slides to the right. Unplug your machine before working on it. The 3 way valve is on the left and you can remove the dispersion tube on the bottom(unscrews) 14mm nut holds the solenoid on and you can slide the solenoid down the shaft. The big nut at the top of the shaft will unscrew and there you will fin the solenoid inside with a big spring. If its not stuck it will slide out and you probably need a new 3 way valve, but more than likely its stuck. Some times just tapping the nut on something hard will unstick the solenoid. Clean good and reinstall.

Posted on May 26, 2009

EsWorld
  • 1618 Answers

SOURCE: I have a quite old la pavoni p3v2 110v 2000w two

Check the top of the group head there is a large bolt, within that is the metering jet and filter, that might be the cause of the blockage(either the jet is clogged or the filter is clogged). As for the full temp on the boiler what reading do you get on the gauge boiler side, it needs to be at about 1.2 bars.

Posted on Jun 24, 2009

EsWorld
  • 1618 Answers

SOURCE: Reduced flow of hot water through the coffee

Check screen and diffuser for blockage, backwash machine. If you still have the noise problem, when runnig the head, then it is block at the solenoid. For the temperature, it is possible that the one of the thermostat is damaged.

Posted on Nov 29, 2009

  • 1089 Answers

SOURCE: The boiler doesn't heat up--no hot water

Hi
Contact fixya because they won't let me tell you. They say its to long.

Posted on Dec 10, 2009

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Inside the machine is a high-pressure canister that is used to super heat a predefined amount of water. Once the water has come to a boil, and reached a predefined pressure (15bar) and temperature, the light comes on once the pressure switch is made.

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An aquastat can also control your boiler. If you have an aquastat, check the setting, typically 175 - 180 degrees. You should also have a "high limit" which should be set at 210 - 220. Some people run that high side limit higher; not a good idea - defeats the purpose. If the aquastat is set too high, the boiler will operate too hot and the problem you have will occur.

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Have you actually seen evidence thgat the T&P valve is opening? You may have a bad bladder in your expansion tank and your system may have air in it. Your boiler should have 12 psi when cold and 20 - 22 psi when operating. Check your boiler pressure guage.

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this eventually drops below the minimum operating pressure" Technically, there is set point for a NO MINIMUM OPERATING PRESSURE. That is a function of the amount of water in the boiler. If the T&P is blowing off, it will vent water from the boiler and the boiler pressure will go down. There is a minimum operating TEMPERATURE.

Your boiler could be low on water. You will have to manually fill the boiler. Be careful of thermal shock to the boiler. Feel the piping, and fill only when the circulator is running. Make sure the water is not going directly into the boiler. The supply water should go into the circulating supply side which feeds the radiators, radiant floor, or base board circuits.

All this will adversely affect your hot water. The heat exchanger for the potable hot water may have scale build up in it. Using the hot water keeps the boiler running, and a scaled heat exchanger will give you cooler hot water and the boiler keeps running. If this is a problem, you will need to replace the heat exchanger. A better idea is to not use the boiler for your domestic hot water. Why run the boiler in the summer?

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