Tariff Bleu

My electricity from EDF has been on Tariff Bleu fot 10 years with my low hours being 2pm-5pm and 2am-7am. I had a switch put in the meter box to only heat the water during this time and I always heard it click on and off at those times. Howevet, it appears to have changed and last might I heard it click at 9pm (not sure if that was on or off as I have no idea how the switch works!). Someone told me that EDF haven’t given the low afternoon hours for ages and I wondered if it was possible for this to be changed remotely or via the external electricty box. This is a maison secondaire where we turn the water switch to off in the meter box but do leave the electricity on so we haven’t changed anything. Would appreciate some input!

ProbBly ahould clarify - when we leave we turn the hot water off, not the little switch that controls when it heats.