I have a SIME SUPER 90 boiler that heats the house fine but when we go to use the hot water in the taps or the thermostatic shower the water goes hot ,then quickly back to cold . the taps are exactly the same . I have been told that the diverter valve is faulty but just want to know if there is any other reason for this fault
no hot water
- Thread starter robertlinney59
- Start date
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tried running the taps when the heating is on ,doesnt make any difference stays the same
Does the pump run when the tap is on?
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the pump runs ,the fan is on ,the pilot lights and fires up ,but no hot water after 30 seconds !!!!!!
Does The spark keep doing click click click click until it cuts out?
no the boiler fires up and stays on ,but there is still no hot water coming through
Have you throttled the tap, slow the water down, mi says 2.8 litres per minute to be precise. Does it warm up? What is the boiler doing?
If not, there are a few more checks that only and engineer can do to verify the gas pressures, from there you'll get a full diagnosis.
If not, there are a few more checks that only and engineer can do to verify the gas pressures, from there you'll get a full diagnosis.
thanks for that last bit shall try that was never told about turning the water back i.e. pressure will let you know as soon as I try it
also check the flow and return pipe on the boiler
throttling back the water did no good ,the boiler fired up as usual as the tap was turned on ,the water went hot then 30 secs later went cold and stayed cold!!!
Sounds like diverter valve if the boiler is still on the heat must b going somewhere??? Is it going round the heating??
the water "STAYS COLD" ........and yes the heating is fine
You say the boiler fires up and the flame STAYS on even though the water becomes cold.
That heat must be going somewhere. If its not the hot water then it MUST be the heating!
Run the hot water for 15 minutes and see if the rads heat up!
That heat must be going somewhere. If its not the hot water then it MUST be the heating!
Run the hot water for 15 minutes and see if the rads heat up!
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