We have the same problem, where we have loads of hot water and the rads are luke warm for some of the day and night, we had a knackered pump so we replaced that (£80 later) IT has helped but has not resolved our problem
we cant work out why after a few hours in the evenings the rads actually get hot and stay hot all night but the rads arnt hot all the way down ???
we have bled the rads and the pressures fine and we do not have a water leak so we are also at our wits end as we dont want to get the gas guys round until we know the exact problem we have and the approx cost as like everybody else in the world moneys not exactly flowing here
we have been told it could be a diverter stuck on hot ???? how can you test to see if this is the prob
we cant work out why after a few hours in the evenings the rads actually get hot and stay hot all night but the rads arnt hot all the way down ???
we have bled the rads and the pressures fine and we do not have a water leak so we are also at our wits end as we dont want to get the gas guys round until we know the exact problem we have and the approx cost as like everybody else in the world moneys not exactly flowing here
we have been told it could be a diverter stuck on hot ???? how can you test to see if this is the prob