I’ve read on this forum that it could be to do with no mobile reception but we have that and can tell by the WLAN red light flashing frequently on the elec meter. (Plus it worked perfectly before).
Does the IHD need repairing with the smart meter?
Best answer by Mw2870
The WAN light is to do with the meter connecting to the mobile network and sending back data.
The HAN lights are to do with the meters (Gas and Electricity) talking to each other and also communicating with the IHD.
Which lights are solid and which are flashing?