Cold water tap not working, house heating not as strong.

Backflow from convection and from expansion of water in the hot water tank is pushing heated hot water backwards, into the cold water supply line, wasting that heat. Install a backflow preventer. A quick test for that issue is to partially throttle the water entering the heater, but do not reduce it to a trickle, let the tank overheat and be damaged! If water in the outside tap is now noticeably cooler, backflow is at least one culprit. Reopen the heater valve after testing!~

https://www.marey.com/media/wysiwyg/pdf_files/2016_08_30_manual_eco110.pdf Refer to page 15 trouble shooting. You may need to clean inlet filter.

clogged heat trap ******?
http://waterheatertimer.org/Low-hot-water-pressure.html

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Have you tried your stop tap it is normally under the sink or it could be you taps have single stop devices all you need is a screw driver to turn it and there is a stop tap outside everyones house has that been turned off message me i can help further

water sounds like it is off at the mains which could be in the flat below , need access to there to check, or it been cut off for non payment , heater would not stop main flow , it is off at the main

best I can tell you ,

Check all valves are open, cold in bottom, pushes hot out top, and if cold at tap is doing same, take aerator off tap and see what happens. Is same thing happening at all taps?

it sounds like your shut off valve might be bad even though it turns on and off by turing it doesn't mean that the washer is not stuck to the seat and not opening, try replacing the valve

First question that comes to mind is why you would want to have a machine if their is no service support where you live. I assume you have done the basics like taking hose off machine inlet and pointing it in to a tub, turn tap on and make sure there is a good supply of water. Put hose back on machine, fully open tap & start (on cold supply). Lift lid while it is filling. Check that a strong flow is coming in to machine. Then repeat with the hot tap. If water is only trickling in & sounds like it is struggling then more than likely it needs a new inlet water valve.

unfortunately it sounds like you have a stuck plunger in the cold side of your water inlet valve.if the screens are clear and your water pressure is good,thats what you have.

there can be 3 reasons for this I will tell u the easiest way to test this first
Problem1)turn the water off at the blue tap fitting that is proberbly under your sink take the blue pipe off at the washer end and place it into the sink turn the blue tap back on if the water comes out quick then the problem is more then likely your cold water solenoid that is either slightly blocked were it fits to the washer,But if it doesnt come out quick then the other 2 problems are as follows.
Problem2)the blue tap that u turn the cold water on to the blue pipe undue the little screw in the middle of the tap and pull the blue fitting off now with a pair of pliers turn the square metal fitting that was under the blue fitting making sure that the end of the pipe is in the sink if it comes out quick then that is the problem the blue tap fitting is rounded off when ot should be square turn the water of and replace the pipe and turn the water back on the cold water should be better now.
Problem3)the blue tap that u turn the cold water pipe of at the copper pipe is blocked or it has a broken shut off valve inside it this will need replacing these are the only problems that it could be let me know if this is any help to u peter