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Flashing radiator symbol on pro24 ecotec valliant boiler pressure goes upto 2 when heating on what does the flashing radiator symbol mean

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Posted on Jan 02, 2017

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1 Answer

I can get hot water but central heating will not come on. The radiator sign on the boiler is flashing all the time


there might be a problem. flashing lights meaning there is something wrong in either wiring or heating coil. some are equiped with manualy reset system. or some solinoid or contactor or a motorized valve. scaled water sensor or stuck float swithes.

Oct 25, 2016 | Water Water Heaters

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Vailant ecotec plus 837 - Water pressure and temp is too high


Pressure inside the tank will rise along with the water temperature. As the water inside cools the pressure will wane until the heating element turns on and reheats the water with a subsequent rise in pressure. Running the hot water at the same time will draw heat energy from the boiler and lower the internal temp and pressure as well.

Jan 21, 2014 | Water Heaters

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Thanks for that mike, it is a worcester bosch combi 24cdi heating and water can stay on for an hour then everything goes off and the red light flashes. it will come straight back on when reset, but then...


Check the pressure reading, should be about 1 bar when system is cold. Various models in the range of 24cdi. If you do not have a manual, go to,
http://www.centralheating.co.uk/Boiler-Manuals/worcester-bosch-boiler-manuals/worcester-bosch-discontinued-boiler-manuals.
Get the manual for your unit, to wards the end of install manual it has a fault finder, Also has a basic 1 in the user manual. Number of flashes how fast the light flashes which one flashing can all mean different, So get the manual and check, Some parts are easy to fix, as long as you do not touch the gas side the rest is plumbing. Come back if needed.

Mar 05, 2013 | Water Heaters

1 Answer

Hi there. Our valiant boiler doesn't seem


Lack of pressure in the primary circuit [radiators] Look for a pressure gauge should read between 0.5 & 1.5 bar
Somewhere there is a tap/valve/pipe connection to refill & looks like a small thumb turn or a screwdriver turn on a connection on the mains water inlet pipe. turn on until you get the right pressure then off

Dec 16, 2009 | Water Heaters

1 Answer

The pressure drops very slowly over a month then needs topping uo from the filling loop to 1.5 bar. when the heating is on it goes upto 3 bar. the pipe outside is slightly damp. it was fine during the...


Sounds like the expansion vessel in the boiler has lost pressure or is faulty. If you have a tyre pressure gauge, locate the expansion vessl and check the pressure via the schraeder valve. It should be around 1.5 bar. If there is no pressure you can re pressurise it with a bicycle pump. Should it not pressurise then you will need a new one. The pressure relief pipework outside is damp because the system is over pressurising at relieving pressure at 3 bar. This obviously causes a system pressure drop. You can install a pressure vesel into the heating return pipework should accessing the boiler be difficult.

Oct 31, 2009 | Water Heaters

1 Answer

I have a Glowworm 30 cxi and the light is flashing, the pressure is 0.4.... i have no water or heating...help please


Under the boiler a little right of center there is a blue/other colour knob. Turn this anticlockwise [as you look up] [twist from right to left] This is the mains inlet tap to let water into the boiler and create the pressure shown on the guage 0.5 bar is the absolute nin.
allow the water to flow in until the guage reads about 1 bar then turn off the knob -not too tight as these are plastic
If you allow too much pressure- do not worry, there is an automatic relief valve.
If the boiler persists in loosing pressure, look for a leak in all pipes to & from radiators. If no leak then check the pressure relief valve outlet pipe, it usually goes through the wall to the outside. Look at the end for water drips & if there are drips replace valve

Oct 12, 2009 | Water Heaters

1 Answer

Bled radiator and now boiler is losing pressure


if your boiler is a combi re-pressurise locate filling loop and refere to manual

Oct 09, 2009 | Water Heaters

1 Answer

Heating pressure gauge goes up


yes tami
there should be a pressure rellief valve fitted.
it also sounds like the heat exchanger is blocked if the hot water is not as good as it used to be and the boiler reaches temperature too quickly then there is scale in the heat exchanger and needs to be cleaned or replaced

Mar 27, 2009 | Water Heaters

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