Whilst trying to resolve a cold radiator i have discovered that i cannot drain the whole CH system.
I have tried draining from all the radiators on the ground floor but nothing comes out of any of them. There is water flowing trough them as all heat up. I can drain the first floor by draining from one of the first floor radiators.
I have being trying to resolve a blockage on a first floor radiator and have had Fernox F3 in the system for a week - no luck. (was only able to drain half the system in order to do this)
Are both problems related? Any suggestions on how i can drain the whole system so i can fulsh out the F3?
I have tried draining from all the radiators on the ground floor but nothing comes out of any of them. There is water flowing trough them as all heat up. I can drain the first floor by draining from one of the first floor radiators.
I have being trying to resolve a blockage on a first floor radiator and have had Fernox F3 in the system for a week - no luck. (was only able to drain half the system in order to do this)
Are both problems related? Any suggestions on how i can drain the whole system so i can fulsh out the F3?