Try to push the adapter as far as possible towards the radiator until no metal from the valve body is visible. This will ensure that the Smart Radiator Thermostat can open and close the valve correctly. Please take care to tighten the screw just enough for the adapter to remain on the valve.
We’ve identified a minor manufacturing issue in some production batches of this adapter made of grey plastic.
If you’re experiencing issues with grey Danfoss RA adapters, you can request a free replacement adapter here.