There are a few things that could be causing your radiant heat not to work. One common issue is that the system might be clogged with dust and dirt, which can prevent the heat from being dispersed evenly. Another possibility is that there might be a problem with the pump or with the valves, which would need to be fixed in order for the system to work properly. Finally, it's also possible that there might be air trapped in the system, which can keep the heat from reaching your home. If you're having any problems with your radiant heating system, it's best to call in a professional to take a look and diagnose the problem.

There are a few things that could be causing your radiant heat not to work. One is that the system might not be properly installed, so it's worth checking with a professional to make sure everything is set up correctly. Another possibility is that there might be something blocking the system, like furniture or curtains, which would stop the heat from circulating. Finally, it's also possible that there's something wrong with the system itself and it needs to be repaired. If you're not sure what's causing the problem, it might be worth getting a professional to take a look at it and help you figure out what's going on.