Hi all,
Need a little advice please. A customer said his radiators were not getting very hot like they used to.
I checked the zone valves (s plan vented system) and replaced the hot water zone valve as it was faulty. Also manually removed all the rads and flushed and cleaned them in the garden. System was filthy. It hasn't had anything done to it for ten years. I did put in Sentinel X400 and left it in for two weeks before I did this.
Now when the boiler is on the zone valves and pump all work as they should do but none of the rads get hot. I can feel water is going around on the flow and return pipes in the loft. I have tried closing all rad valves apart from one rad and still that is not even getting hot! Any ideas what I can do to resolve the problem?
Need a little advice please. A customer said his radiators were not getting very hot like they used to.
I checked the zone valves (s plan vented system) and replaced the hot water zone valve as it was faulty. Also manually removed all the rads and flushed and cleaned them in the garden. System was filthy. It hasn't had anything done to it for ten years. I did put in Sentinel X400 and left it in for two weeks before I did this.
Now when the boiler is on the zone valves and pump all work as they should do but none of the rads get hot. I can feel water is going around on the flow and return pipes in the loft. I have tried closing all rad valves apart from one rad and still that is not even getting hot! Any ideas what I can do to resolve the problem?