I contacted the after-sales service by email and am waiting to hear from them. Here is the list of problems encountered: - no pressure (this is supposedly normal since we are on the 7th floor. There is a part to install that allows the pressure anyway: the booster.) - the electricity that cuts out when we shower, when we use the kettle, the oven, the hob (3 electricians told us that we had to turn off the air conditioning at these times because the consumption is