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Hello to everyone, I've just been given a link to this board from a member of Modshack, looks like a very useful place to be a member of and hopefully I will be able to muck in and share some of my little knowledge with you.
I've got a Halstead Quattro Gold combi an it has developed a niggly fault. The CH side of the system works fine, the problem is with the DHW. When I run a hot tap, sometimes it runs hot and at other times cold, if I tap the side of the boiler an electrical 'click' is heard and it fires up and heats the water, sometimes for a couple of minutes and sometimes long enough for a bath/shower.
Whilst the water is running hot, if a tap/cistern/washing machine is used in another part of the house then the DHW turns cold again, also if the CH is in use the DHW will not heat at all, turning off the CH and clouting the boiler gets the DHW running hot again.
I've ruled out the thermistors by by-passing them and the diaphram in the diverter valve is in good condition. Someone has suggested that the air pressure sensor may be faulty, I cleaned inside the hoses and fan casing probe and it did seen to sort the problem for a couple of days, although I think that this was a fluke as if this was the problem then it is unlikely that the CH would work properly.
If the sensor is suspect, there is an adjuster screw on it, clockwise = + and anti = -, if it needs adjusting should I advance or ****** the screw?
And if I am barking completely up the wrong tree, what could be causing the problem?
For some reason I keep erring on the problem being with the diverter valve, I have replaced the diaphram a few times (very hard water area) and I keep thinking that I may have re-assembled the spindle assembly wrongly, but I don't think this is reallythe case.
Also the microswitch on top of the DV appears to work fine when I activate it with a pencil.
Any ideas would be very welcome.
Thanks!
Stbd 10
I've got a Halstead Quattro Gold combi an it has developed a niggly fault. The CH side of the system works fine, the problem is with the DHW. When I run a hot tap, sometimes it runs hot and at other times cold, if I tap the side of the boiler an electrical 'click' is heard and it fires up and heats the water, sometimes for a couple of minutes and sometimes long enough for a bath/shower.
Whilst the water is running hot, if a tap/cistern/washing machine is used in another part of the house then the DHW turns cold again, also if the CH is in use the DHW will not heat at all, turning off the CH and clouting the boiler gets the DHW running hot again.
I've ruled out the thermistors by by-passing them and the diaphram in the diverter valve is in good condition. Someone has suggested that the air pressure sensor may be faulty, I cleaned inside the hoses and fan casing probe and it did seen to sort the problem for a couple of days, although I think that this was a fluke as if this was the problem then it is unlikely that the CH would work properly.
If the sensor is suspect, there is an adjuster screw on it, clockwise = + and anti = -, if it needs adjusting should I advance or ****** the screw?
And if I am barking completely up the wrong tree, what could be causing the problem?
For some reason I keep erring on the problem being with the diverter valve, I have replaced the diaphram a few times (very hard water area) and I keep thinking that I may have re-assembled the spindle assembly wrongly, but I don't think this is reallythe case.
Also the microswitch on top of the DV appears to work fine when I activate it with a pencil.
Any ideas would be very welcome.
Thanks!
Stbd 10