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How to fix overheating rads?

2 Rads- 1 downstairs -1 upstairs, both with new trv's- are not responding to thermostat and come on and stay on full blast. How can I fix? thanks
Jean, May 2007
Take off trv head,possibly bi directional valve on valve body,indicated by 2 arrows,1 in and 1 out,turn heating on,if trv pipe heats first,posistion arrow in to rad on valve body and outwards if its the second pipe to heat,therefore giving you better control over rad with thermostat.

Impressive heating., June 2007
what number is it set on ?

gas & heating, May 2007
get the person who fitted them back to do it properly

sonray heating., May 2007