hi chaps hope you can help,the ch is fine but when the hot water is turned on the boiler fires up for a couple of mins then cuts out then fires up again and so on and so on ive changed the diverter valve ( which i was told could be the fault) but its still doing it
Worcester 24CDi dhw fault
- Thread starter stewy
- Start date
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Is the water flow consistant
What boiler?
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fitz1 said:
Read the top Fitz
Im knackered and everyones picking on me. Im only trying to help.
Have you managed to resolve the problem with the boiler??, I have the same problem on a worcester bosch 24cdi . originally I thought the problem was due to an Air lock, as the vent at the top was given out steam. I'm now just about to change the diverter value and clear out any sludge.
It's probably sludge on the primary side of the secondary heat exchanger. Practically every combi seem to suffer from it sooner or later (though I suppose I don't see the ones which are OK!)
It can be cleaned,, or you can just replace the h/e. It could (generally) also be sludge covering the temp sensor, blockage in the main h/e, knoackered pump..........
C Heating OK?
It can be cleaned,, or you can just replace the h/e. It could (generally) also be sludge covering the temp sensor, blockage in the main h/e, knoackered pump..........
C Heating OK?
are you sure the hot water light doesn't flash.....the burner should light at low flame then the fan speed increase and the burner light on high flame. Could be the gas valve solenoid not opening to the high demand.
thanks for the info so far- I have tonight just run the CH Only. its ok for about 15min then the pressure needle jumps up and boiler shuts down Leaving the CH demand light on but nothing else. the previous night I just run the HW and again I get hot water for about 4 mins then the pressure needle jumps and the boiler makes very loud banging sound, with the odd bit of steam venting. when I run the CH and then also demand some HW we are ok for about 30 seconds before the pressure needle jumps and the boiler shuts down making lots of loud noises. and yes sometimes both HW and CH lights flash slowly - hope this makes sense.
is it letting water outside
by the sound of it it's boiling
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