TRV - thermostatic radiator valve
You should be able to remove the plastic cap. There's a stem under it. Will pliers turn the stem?
If yes cap plastic is broken. Can be replaced
If not, the whole trv is broken and needs replacing.
Home Improvement
TRV - thermostatic radiator valve
You should be able to remove the plastic cap. There's a stem under it. Will pliers turn the stem?
If yes cap plastic is broken. Can be replaced
If not, the whole trv is broken and needs replacing.
The silver ring below the black plastic secures the thermostat to the valve. If you loosen that screw, it will release pressure on the valve which in turn opens -> heating starts. It is rather tricky to fasten that ring again unless you can turn the thermostat to MAX though. Is the silver ring tight right now?