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I've got a brand new Worcester combi boiler. It's great except it keeps loosing pressure, drops from 1.5 to 0 in a week. Can't find any visible leaks but have a concrete floor under laminate downstairs, I can't possible have it all dug up just in case there is a leak underneath. Is there anyway I can tell for definate if any underfloor pipes are leaking? My plumber has been back and he's checked rads for air in them and leaks. Also the pipe which goes outside if here is blow off and all was OK. Now he is stumped. Help!I've got a brand new Worcester combi boiler. It's great except it keeps loosing pressure, drops from 1.5 to 0 in a week. Can't find any visible leaks but have a concrete floor under laminate downstairs, I can't possible have it all dug up just in case there is a leak underneath. Is there anyway I can tell for definate if any underfloor pipes are leaking? My plumber has been back and he's checked rads for air in them and leaks. Also the pipe which goes outside if here is blow off and all was OK. Now he is stumped. Help!
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If the inline pump is not working no hot water will flow into your radiators. The pump pushes the water in the lines to create a water flow. Increasing the pressure will not help in this case. I recommend you put the pressure back down as it usually is preset when the boiler is installed. My pump is about three feet back of the boiler on the intake line. If you don't know what you are doing I recommend getting a repair man as you could create more problems by over heating the boiler its self and blowing the electrical parts up.
Annie, I don't have experience in this boiler , but I found a link that has some information and numbers to get help. Thought I would pass it on and hope it will be helpful.
All the combis I've come across merely fail to fire if the pressure is not up. not only do they not fire, nothing else works including the pump and in any event the pump should not overheat just on low pressure. water loss - try turning off the valves on the flow & return pipes [3/4 inch ones] 1 valve per pipe . This will isolate the rest of the system - rads etc Note pressure over a time period. In this mode the hot water circuit will still work but do NOT use the heating circuit 1/2 bar over 2 days is not serious but it should be found Once you have either mended the leak in the rest of the system or found there is not one, insist on a replacement boiler In any event having looked at the reasons given for the fuse blowing, I would definitely get a replacement. These problems should not happen on a new boiler I list Worcester.-Ariston-GlowWorm-Ideal- and many others who would confirm this
That overflow is the Pressure Relief Valve.usually they are set at 3-3.5 bar but over time they can be gunged up inside and leak/allow water to flow out. Dismantle & clean or replace. Turn off mains water and ch pipes before removing - operate valve remove & allow for some water to leak from it
This is lack of water flow through the diverter valve.
First have you got a good flow from any cold tap? If yes then see below
If I remember there is a pipe carrying cold mains crossing the lower front of the boiler with an in line filter usually clogged. Remove clean & replace check also any filter in rising mains to boiler
another cause is the diverter valve itself - diaphram inside may be punctured/split
Is your boiler heating your domestic hot water if so i would turn water off to water maker and see if your boiler pressure stays down below 20 psi. If so water maker is bad. The other thing that could cause this problem would be the boiler pump is out.
Check the system pressure and top up if necessary - but after that the best advice is to get the people who fitted it for you to come out and sort it - These Worcester combis usually have a 5 year parts warranty and with a boiler that's just a few weeks old, you oughyt to be able to get the labour for nothing as well. It would be a shame to throw those benefits away by tinkering yourself.
I've got a brand new Worcester combi boiler. It's great except it keeps loosing pressure, drops from 1.5 to 0 in a week. Can't find any visible leaks but have a concrete floor under laminate downstairs, I can't possible have it all dug up just in case there is a leak underneath. Is there anyway I can tell for definate if any underfloor pipes are leaking? My plumber has been back and he's checked rads for air in them and leaks. Also the pipe which goes outside if here is blow off and all was OK. Now he is stumped. Help!
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