KE100 head wobbles when calibrating
I have just fitted the KE100 and I had a difficult time attaching it to the valve. My old valve was a Danfoss RAS-C2 Combi and I tried to contact Danfoss to ask which adapter I needed to use but they don't speak to domestic customers.
The data sheet for the RAS-C2 range includes the following statement...
"All RAS-C² Combi Packs comprise of a RA-FS angled or straight pattern bi-directional valve and a RAS-C2 sensor designed for 2-pipe heating systems."
...so I took it that the RA adapter is the one to use.
However, the TRV seems to be quite difficult to tighten and when I calibrate it, the head seems to wobble a little bit. Is this right? I don't know whether I've still used the wrong adapter or if it's because the parts are plastic and not very easy to tighten.
In addition, I'm not sure it's working correctly. I've set the KE100 to 23 degrees C and it says the current temperature is 20 degrees. I heard the motor but the radiator doesn't seem to be heating up and the temperature is dropping according to my Tapo T315. And yes, the boiler is on.
Any advice would be appreciated.
EDIT: The radiator did heat up in the end - perhaps there is a delay for some reason. Anyway, I am still concerned about the movement of the TRV itself when I calibrate it.
@AnnieB I've just had delivery this week of these valves and also have RAS-C² valves to replace. I did wonder which adapter to use so a web search found this thread.
I was a little worried that our valve bodies may not be compatible, but what I found was I needed to push the RA adapter down to seat it fully, and there was no wobble.
Pic attached to show how mine sits.