yves Andres1 year ago000Do you still need to switch on a main switch? I have switched on my cooler and set it to level 4. cools, but notShow in original language (German)gerbere1 year ago000 Helpful answerOur radiator works perfectly, don't know if it has a main switch? maybe down by the thermostat?Show in original language (German)Comment1 commentrepeat1 year ago000There is no main switch. Cooler has been working perfectly for years. Very quiet appliance.Show in original language (German)Commentmbgalati1 year ago000NoSet the cooling level on the underside of the thermostat. Mine cools at level 4.Show in original language (German)Comment1 comment