i've got a Halstead Quattro combi, a couple of months ago the diverter valve went, so we had someone out to replace it, while he was there he also replaced the PCB because it wasn't firing up properly. Worked fine for a while, then last night, running the hot tap to wash up, the overheat lockout light came on. Pressing the reset button didn't fix it, turning it off overnight then trying again this morning didn't make a difference. Pressure was low so I topped it up with the feeder valve, still as soon as a hot tap is turned on, the red light comes on. Any ideas?
Halstead Quattro-Overheat lockout
- Thread starter 'arrison
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Fixed. The Overheat reset button is just a long plastic bar, that feeds through a hole in the top and sits between 2 wires on top of a small button. The only thing holding it in place is the wire on either side of it. So I put it back and put a cable tie around it to hold it in place so it cant fall inside the boiler again. Cheers 
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Can't beat good old British designed gear - designed on the back of an envelope in a tea break!
Bringing this thread back again...its done it again, but this time the red light comes on, I leave it to cool down overnight, press the reset button and turn it on, it fires up and works for about half a minute, then the red lights back on again. Any ideas?
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