Hi
I drained down my CH system to fit a new TRV - (the vacuum didn't work)!! and I have now refilled it. What are the signs if you have an airlock somewhere on re-filling? I hope i don't have one!
I drained down my CH system to fit a new TRV - (the vacuum didn't work)!! and I have now refilled it. What are the signs if you have an airlock somewhere on re-filling? I hope i don't have one!