Hi @NotQuiteAlice , normally a blue light indicates a gas only supply although here I can see your electric usage and icon as well. 
Might there be a budget set for gas usage which needs adjusting?

I don't think I ever messed around with the budget settings, and to be honest, I wouldn't even know where to begin.

The one thing I have noticed is this morning it has gone back to the standard Green/ Amber and Red, showing our energy usage.

What I am thinking is that perhaps the blue indicator is a newish function to show when someone is in the eco zone of their power plan, you know, when it’s the best times to use washing machines etc. It does seem to go blue after 9pm (ish), I will monitor it tonight and see if it does it again.

Hey @NotQuiteAlice,

Welcome to the OVO Online Community,

I looked into this for you and couldn’t find information about what blue means specifically. I think that it may be, as BPLightog suggested to do with a budget. When you move across from your old supplier the IHD may switch back to factory settings. Before it ‘re-learns’ your usage patterns.

If you have any further clarity or updates on this please report back 

Mine has also gone blue the last few days and I've not moved supplier or changed any budgets or even touched it! It doesn't change either when I put the kettle on.

Therefore I think you might be right in saying it's something to do with the time of day. I'll watch mine too

Mine has gone blue now and I cannot do anything to reset to energy level colours. We only have electricity and the meter installation was 7 years ago. Frithee 

As you were, as they say in the Army. I rebooted again by switching on and off and bingo! Energy level lights are back. 

Hi @Frithee,

I’m glad to hear that you’ve managed to sort this already.