i have a problem whereby two rads downstairs only become warm and at the bottom of the rad its still cold. They are brand new and a week before i had already flushed the system with fernox. I have balanced rads, checked trv's are working, boiler is running 1.5 bar and is at 65 degs. What i have noticed is that the flow temp to the rads in question are abt 60/62 deg but the return is abt 30 deg !!!! Does this meen the pump is failing ??? Can anyone please help me
many thanks
stef
many thanks
stef