Recent content by Vitali

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    Booster pump installed successfully, but now boiler goes to overheat!

    Yes, Darren, you were right, because I am an amateur I didn't know that was a gate valve by the pump (the one with a small screw-like shutter you open/close with a flat end screwdriver. I genuinely thought it was air release valve and twisted it myself, noticed a small leak and tried to screw it...
  2. V

    Booster pump installed successfully, but now boiler goes to overheat!

    Hi people, I guessed it was something simple and it was... The valve just before the circulation pump got stuck and hot water from the boiler would not get into the pump. It was less then half open and would not open fully. The other valve straight after the pump was not in the best condition...
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    Booster pump installed successfully, but now boiler goes to overheat!

    Hi again, did what you told me, took out the valve going to the bottom of the cylinder, (in the picture red top on), first the water shoot out of the coil/cylinder about 3 litres, stopped. Then when I opened the valve another 2 litres came out and then stopped. I thought it should be always...
  4. V

    Booster pump installed successfully, but now boiler goes to overheat!

    Thanks, I will try to blow the pipes in the loft midday today as suggested, and if no luck, will bring a Pro in to solve the problems. Will write back how my saga finished later.
  5. V

    Booster pump installed successfully, but now boiler goes to overheat!

    Can you tell me then what's a not working pump? I understand it is silent, not vibrating, nothing spinning. My one is the opposite and I even unscrewed the middle of it and the impeller is spinning. If some valves are faulty then they would be behaving faulty, never closing to firm end or...
  6. V

    Booster pump installed successfully, but now boiler goes to overheat!

    The boiler starts as it should be: boiler on, fan on, pilot on, burner on. Can see fire burning, all good, but then stops and overheat light comes up and is there until everything cools down and I am able to reset it then.
  7. V

    Booster pump installed successfully, but now boiler goes to overheat!

    I didn't go near the boiler in the first place, I just worked upstairs were the pipes and hot water cylinder is. Turned off 3 valves when installing the pump, was a very straightforward job, then turned back all of them back except for one by my stupid mistake, the one going to the bottom coil...
  8. V

    Booster pump installed successfully, but now boiler goes to overheat!

    That's a good suggestion, will try everything you say and if no joy, at least I tell to myself---I did all I could and then ring a professional... If you have more ideas, I am up all night working until morning, keep posting! Thank you everyone!
  9. V

    Booster pump installed successfully, but now boiler goes to overheat!

    Then it's in good condition as it stops firm when opened and when closed plus I can hear water flow a bit.
  10. V

    Booster pump installed successfully, but now boiler goes to overheat!

    It is open now, yes. How do you check actually if the valve is faulty, only by taking the connection apart?
  11. V

    Booster pump installed successfully, but now boiler goes to overheat!

    Now I have the booster pump disconnected altogether but no joy. Could the pump look and sound like running but not pumping? Went to neighbors with the same system. Checked the pipe going out of the circulation pump-- it is hot as it should be. Mine is not!
  12. V

    Booster pump installed successfully, but now boiler goes to overheat!

    I tried that approach as well. OVERHEAT!
  13. V

    Booster pump installed successfully, but now boiler goes to overheat!

    That's the thing -- all was good.
  14. V

    Booster pump installed successfully, but now boiler goes to overheat!

    The pump is always on when the boiler is on heating and when it cuts out to overheat the pump still runs and I can't reset the PCB until everything cools down a bit.
  15. V

    Booster pump installed successfully, but now boiler goes to overheat!

    I took the power from the socket in the nearest bedroom and ran the cable to install a separate socket with a switch in the hot water tank press. That's the diagram I was using to choose the right hot pipe for the pump.

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