Our boiler is overheating and to-date the engineers called-out have failed to identify a problem. Boiler thermostats have been changed and also we've had a new pump fitted. The wierdest thing is that when it happens, our mains tap runs hot for a few seconds. Any pointers on the overheating and any ideas on why the cold tap can run hot when this happens? Worrying...
overheating and hot mains!
- Thread starter guestnc
- Start date
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There's a circular dial to the right of the front panel, which I'm assuming is the stat control. At the 3 o'clock position is a dot that is supposed to mark the most efficient setting. We run it slightly lower than that, so I'm assuming we're not running it too hot. Stumped!
This ia long shot. Is it a combi boiler? Is the filling loop connected? do you have lowish water pressure? is the filling valve leaking? is hot water being pushed back along the inlet pipe? Also more likely with a vented cylinder.
How do you know the boiler's overheating?
If the cold main isn't connected to the boiler system it must be pipe proximity somewhere. Check all is well in the loft - header tank area.
Often new thermostats have to be put in with thermally conductive paste, which gets forgotten.
Always helps if people tell us what boiler/system they have!
If the cold main isn't connected to the boiler system it must be pipe proximity somewhere. Check all is well in the loft - header tank area.
Often new thermostats have to be put in with thermally conductive paste, which gets forgotten.
Always helps if people tell us what boiler/system they have!
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