Fitted willhi controller to a brew belt. it responds to switching on and off and also when I set the temperature required for diacetyl stage of a Bock beer . The temp readout lasts for perhaps 15 seconds then changes to EEE. I can't see anything which refers to such a readout on the instruction list. It does mention HHH and LLL which I have not come across as yet. The language is weird to say the least ; very stilted and clearly not mainstream English and difficult to make sense of. I have selected H for heating at 65*F in my cold garage but the belt stays firmly cold. Can anyone please tell me what i am doing wrong. Thanking you in anticipation.