Problem
If a radiator that does not seem to be behaving as it should.
Solution
Here are the steps to check what may be causing the problem:
- If the room on the app is blue the wireless valve should read 4 and the radiator should be cold.
- If the room on the app is orange the wireless valve should read the set (target) temperature.
- If the wireless valve is showing a target temperature but the radiator is cold, this is most likely to be because the target temperature is set close to the measured temperature in the room, and though the app is orange and the wireless valve is showing the target temperature, the radiator is cold because the wireless valve has decided that the room is close enough to the set temperature and it does not need to add any more heat to the room, it is trying to save energy.
- If the wireless valve is set to 28º and the measured room temperature is significantly below 28º, and the radiator is cold, then the pin in the valve body (the metal part of the valve which the water flows through), cannot open properly and it is possible that the pin has become jammed or stuck. This means that the electronic valve needs to be removed from the valve body, and with a pare of pliers or end of a large spanner the pin on the valve body needs to be worked free. Be careful doing this as if the valve body is in poor condition this may cause the valve body to leak. If it is not possible to free up the valve body then it will need to be replaced. (see page 20/21 of the Installation Guide to see how to mount the radiator valve correctly).
- If the wireless valve shows 4 and the radiator is warm, this means that the wireless valve cannot control the water flowing into the radiator, this may be because of the following reasons:
- The wireless valve head may be cross threaded onto the valve body. This means that the wireless valve cannot push down on the valve body effectively. To rectify this the wireless valve needs to be removed from the valve body and remounted (see page 20/21 of the Installation Guide to see how to mount the radiator valve correctly).
- If using the Danfoss RA-FS valve bodies, some times the grub-screw that is tightened up with an allen key is not tightened up enough, and the white adapter ring rises up the valve body, you will see a small gap under the adapter ring. This means that the wireless valve cannot control the valve body and the valve needs to be put into mount mode and the wireless valve mounted onto the valve body so that the white adapter ring is tight up against the valve body.
- The valve body may be corroded inside which means that the wireless valve cannot force the valve body shut. This means that the wireless valve needs to be removed from the valve body, and with a pare of pliers or end of a large spanner the pin on the valve body needs to be worked free. Be careful doing this as if the valve body is in poor condition this may cause the valve body to leak. If it is not possible to free up the valve body then it will need to be replaced.