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Worcester bosch highflow 400 -10 years oldIf we run the hot water for more than a sinkful the boiler overheats and clicks off. The only way we can get a shower or bath is to turn the central heating on( at 0 on the display) and then turn it off half an hour or so afterwards.The plumber replaced the thermostats, put in a new pump and power-flushed the system- made no difference.The towel rails in the bathrooms used to heat up (presumably taking the excess heat away but they don't do that now either).If you forget to turn the heating on the shower pressure and temperature drops then heats up then goes cold because the boiler has clicked off. The temperature through the taps is very hot and you can hardly touch the taps when the heating isn't on.The plumber hasn't been able to suggest anything other than put the heating on. Any thoughts would be gratefully received as it's a nuisance!Thanks. Well Micky's mum it isn't a job of checking the plate heatex as it's not a part that'll take a cupl of minutes to do. I'd personally liked to have known how dirty the system was when flushed and what else is happening with the boiler. Without a doubt you need someone there to experience what is happening with your boiler.
The noise could be the boiler over heating as it re-heats the hot water tank. That's just me guessing.
My best advice to you to limit costs further is one of the big boys service cover contracts B-Gas and the like.The floor-standing Worcester are a rare bread, my neck of the woods. There maybe someone on here who is more familiar with your particular boiler and could better advise.Good luck! You say the heating is fine, but the hot water is buggered. The first thing I'd do is push the high limit thermostat reset button (if you take the cover off it's located on the left, directly above the pump just under the facia panel).Then say a prayer and turn on your hot water tap.Hopefully all is well, and your wallet will feel relived.
Worcester Bosch Highflow 400 User Manual
If not call a GSR Engineer (preferably someone whos been recommended) and let him have a look. If he can't figure it out, tell him to ring Worcester bosch technicalhelpline (it's what their there for).(P.S. Still doing mygas course, so I would confirm this information with someone moreexperienced)- Davinder. You say the heating is fine, but the hot water is buggered. The first thing I'd do is push the high limit thermostat reset button (if you take the cover off it's located on the left, directly above the pump just under the facia panel).Then say a prayer and turn on your hot water tap.Hopefully all is well, and your wallet will feel relived.
If not call a GSR Engineer (preferably someone whos been recommended) and let him have a look. If he can't figure it out, tell him to ring Worcester bosch technicalhelpline (it's what their there for).(P.S. Still doing mygas course, so I would confirm this information with someone moreexperienced)- Davinder.
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