Hi all
Recently we have been noticing that every so often the radiators are very hot. On one of these occasions it turned out that the toddler had turned one of the TRV's up to 5, but on the other occasions I have been round to check all of the TRV's which have all been left set at 3. The room stat is set to 19 degree's but the ambient temperature has been more like 23 according to my thermometer. When this has happened, I have gone round and adjusted the TRV's up and down and then back to 3 in case they were somehow stuck, turned the (back)boiler off and back on again keeping the boiler stat low, checked the room stat and in general the problem seems to go away for a while and keeps re-occurring.
I now believe that the issue is either to do with a faulty room stat, or a faulty mid position valve.
I have just been looking at the actuator. when I turn the programmer from water only, to water and CH, to CH only, I'm not hearing the valve do anything. The little indicator on the side that points to either W,M,or H to show the position of the valve is missing so I cant see what position the valve is in. Other thing to note is that the casing of the pump and outgoing pipes are very hot to touch (you can touch for 1-2 seconds), not sure if this is normal.
Attached is a picture of the setup. Can anybody recommend any checks that I can do to test that the valve/actuator is operating correctly, and also how to check that the room stat is not faulty?
I appreciate any help. Thanks
Paul
Recently we have been noticing that every so often the radiators are very hot. On one of these occasions it turned out that the toddler had turned one of the TRV's up to 5, but on the other occasions I have been round to check all of the TRV's which have all been left set at 3. The room stat is set to 19 degree's but the ambient temperature has been more like 23 according to my thermometer. When this has happened, I have gone round and adjusted the TRV's up and down and then back to 3 in case they were somehow stuck, turned the (back)boiler off and back on again keeping the boiler stat low, checked the room stat and in general the problem seems to go away for a while and keeps re-occurring.
I now believe that the issue is either to do with a faulty room stat, or a faulty mid position valve.
I have just been looking at the actuator. when I turn the programmer from water only, to water and CH, to CH only, I'm not hearing the valve do anything. The little indicator on the side that points to either W,M,or H to show the position of the valve is missing so I cant see what position the valve is in. Other thing to note is that the casing of the pump and outgoing pipes are very hot to touch (you can touch for 1-2 seconds), not sure if this is normal.
Attached is a picture of the setup. Can anybody recommend any checks that I can do to test that the valve/actuator is operating correctly, and also how to check that the room stat is not faulty?
I appreciate any help. Thanks
Paul