Question about KitchenAid KPES100PM Espresso Machine

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Steam Boiler not heating up - pumps cold water but won't the boiler never heats up, I suspect the thermostat or solenoid

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  • chrisb
    chrisb Dec 03, 2013

    I checked all this and the continuity seems good on the thermostat, boiler and thermal fuses, I suspect the relay is not switching power to the steam boiler, but its hard to figure out without a wiring diagram. Also, the relay wiring on my machine does not line up with the documentation.

  • Ross Keen Dec 03, 2013

    Hi Chris, I have never had to replace a relay on one of those, the solution has always been found within the items I listed for you. Providing you have not mixed around the wiring you should be able to check if the relay is working by using a voltmeter at the boiler while the machine is heating. I will have a wiring diagram here but it sounds like you already have one anyway. If you need my diagram you will need to provide me an email address.

  • chrisb
    chrisb Dec 03, 2013

    I'd appreciate a wiring diagram just to check as I did inherit this machine from someone else. My email address is c_d_barton@hotmail.com

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  • KitchenAid Master
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Check the 2 thermal fuses on the top of the boiler, if they are blown replace them and the thermostat. While you are at it replace the seals in the steam boiler, there are 5 of them in that boiler. If the fuses aren't blown check the element for continuity, sometimes one will fail.

Posted on Dec 03, 2013

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The steam guage is rather slow to respond and the pointer has become detatched on my machine but it's working well and froths good after about 5 minutes from start up, although I do tend to leave my machine on all day and just make sure that there is sufficient fresh water in the tank

Posted on Jan 01, 2011

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Taco 007 circulating pump stays on even though boiler shuts down


Don't know your specific unit, but in general, heating systems are two-stage devices:

1: Its too cold: the motorised HW/CH valve moved to the required position, and on achieving it, the circulaion pump starts and the boiler is enabled. (The circ pump may start immediately - its not usually important.) The hot water from the boiler circulates through the heat exchanger and/or radiators until the thermostat thinks its target is warm enough, whereupon it disables the boiler, stops the pump and closes/relaxes the valve(s).

2: The boiler is off while disabled. When enabled, it heats the circulating water to a 'high' temperature and seeks to keep it there. If it reaches that temperature, the boiler will cycle on and off as necessary to maintain the set 'high' temperature. (The circulation pump must run all the time the boiler is enabled.) This may be what you're noticing. Additionally, some boilers will run the circulation pump for a little while after being disabled to reduce the temperature if the water in the pipes and boiler.

Your question doesn't say how the pump running corresponds to thee thermostat settings, but if it were stuck on, I think you'd know!

Dec 31, 2016 | Water Heaters

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Rancilio Silvia does not heat.



There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also another problem that you might have. If the brew thermostat is bad it won’t heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged.
If none of these things work check the heating element with an ohms meter. The reading in the terminals should be from 12 to 16 ohms. If no reading the elements is bad and you have to replace the boiler.

on Jan 01, 2010 | Coffee Makers & Espresso Machines

1 Answer

Lights are all on but the machine not heating so power up lights will not turn odd


Hi There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also another problem that you might have. If the brew thermostat is bad it won't heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged. If none of these things work check the heating element with an ohms meter. The reading in the terminals should be from 12 to 16 ohms. If no reading the elements is bad and you have to replace the boiler.

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1 Answer

Does the boiler thermostat control the heat of the radiators as well as the hot water temperature? Does the thermostat control the water temperature and the pump - as our pump seems to be on all the...


There should be a control called an aquastat that regulates the temperature of the boiler. The thermostat will turn on the circulator to start the flow of water through the radiators. If the water coming back from the radiators is very cold, a control will shut off the circulator until the boiler can come up to a predetermined temperature then start the flow of water again. If you have a tankless coil for domestic hot water, you now have a triple aquastat that maintains the temperature for domestic as well as the boiler temp. So yes the boiler thermostat (aquastat) does control the heat of the radiators and domestic hot water. No the pump is regulated by your house thermostat. You should take an amp draw on the boiler and componants to find out what is drawing more electricity than it should and popping your fuse.

Feb 19, 2011 | Heating & Cooling

1 Answer

My Silvia no heat-no steam. water goes through


HI
If your lucky.
There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also an other problem that you might have. If the brew thermostat2_bing.gif is bad it won’t heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged.
If none of these things work check the heating element with an ohms meter. The reading in the terminals should be from 12 to 16 ohms. If no reading the elements is bad and you have to replace the boiler.

Jan 21, 2010 | Rancilio Silvia Espresso Machine

1 Answer

MY SILVIA NOT WARMING THE WATER. I LEFT THE MAIN SWITCH "ON" AT STEAM FUNCTION WITH THE SCREW-KNOB OPEN AND THE STEAM SWITCH "OFF". TOMMY.


Hi
If your lucky.
There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also an other problem that you might have. If the brew thermostat is bad it won’t heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged.
If none of these things work check the heating element with an ohms meter. The reading in the terminals should be from 12 to 16 ohms. If no reading the elements is bad and you have to replace the boiler.

Dec 22, 2009 | Rancilio Silvia Espresso Machine

1 Answer

Does not heat


Hi
UNPLUG THE MACHINE
There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also an other problem that you might have. If the brew thermostat is bad it won’t heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged.
If none of these things work check the heating element with an ohms meter. The reading in the terminals should be from 12 to 16 ohms. If no reading the elements is bad and you have to replace the boiler.

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1 Answer

I accidentally left my Silvia on overnight, with the Steam button in the "on" mode. Now the machine won't heat u at all. Help!


Hi

There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also an other problem that you might have. If the brew thermostat is bad it won’t heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged.
If none of these things work check the heating element with an ohms meter. The reading in the terminals should be from 12 to 16 ohms. If no reading the elements is bad and you have to replace the boiler.

Nov 25, 2009 | Rancilio Silvia Espresso Machine

1 Answer

The steam switch was left on. Now the machine does not heat up. Help!


There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also an other problem that you might have. If the brew thermostat is bad it won’t heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged.
If none of these things work check the heating element with an ohms meter. The reading in the terminals should be from 12 to 16 ohms. If no reading the elements is bad and you have to replace the boiler.

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1 Answer

I have a Gaggia Synchrony compact. I recently decalsified it and it stopped working. The low water light is on and nothing works except, for the water pump. It will flow only cold water through the steam...


If it leaks from the steam wand then you need to get a new steam valve assembly. For the heat you will have to open the machine it is possible that the steam boiler is damaged or that the thermostat on there is bad, use an ohmsmeter to check thermostats and element. There are 2 screws in the grinder, 2 behind the water tank and about 2 or 3 in the front behind the door.

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