Hi folks just a newbie to the forum so be gentle. I have checked the forums and cannot see anything similar. It’s the old chestnut of a single radiator not heating up as much as the others. I have 12 radiators in our home and 11 of them blast out heat but one only gets about 50% warm compared to the others. all are brand new and fitted with Danfoss RAS-C2 TRV’s.
Due to an error by the fitter this was the only radiator that the TRV was not replaced on, saying that it was a newish TRV (i.e. not an old part) I’m not sure whether the TRV is working properly (though the pin appears free and can move up and down) The pipe going into the radiator before the TRV is roasting as is the section of radiator after the TRV. It’s as if the water isn’t going anywhere, the pipe going aware from the rad is warmish but not roasting. Tried the usual freeing the pin, tapping the side of the valve lightly with a hammer to see if there is any sticking. Any advice would be appreciated. I’m not entirely sure how a small pin on the TRV can actually control the valve to open or close as there does not appear to be much travel in the pin. I wonder if you can remove the nut on top of the TRV that the pin sits in, but not sure if this would provide any further clarification of the problem.. Thanks in advance.. JD
Due to an error by the fitter this was the only radiator that the TRV was not replaced on, saying that it was a newish TRV (i.e. not an old part) I’m not sure whether the TRV is working properly (though the pin appears free and can move up and down) The pipe going into the radiator before the TRV is roasting as is the section of radiator after the TRV. It’s as if the water isn’t going anywhere, the pipe going aware from the rad is warmish but not roasting. Tried the usual freeing the pin, tapping the side of the valve lightly with a hammer to see if there is any sticking. Any advice would be appreciated. I’m not entirely sure how a small pin on the TRV can actually control the valve to open or close as there does not appear to be much travel in the pin. I wonder if you can remove the nut on top of the TRV that the pin sits in, but not sure if this would provide any further clarification of the problem.. Thanks in advance.. JD