I have recently had installed two new thermostatic valves to two new radiators. The problem is I'm not sure they are working correctly.
They have positions/settings marked on them from 1-5, but they only work when the setting is between 4 and 5. If I adjust the setting to between 3 and 4 or lower the radiator will go stone cold (even in winter). Is there an adjustment to these valves (honeywell) or is this how they are supposed to work? It seems pointless to have settings 1-5 when 1-4 do not actually do anything. The radiators bleed OK (no air comes out -only water)
Thank you for your time.