Too long time for intervention
Issue was i. Configuration of paramaters, techician come a first time, he affirmed that problem was in the elctrical board, when he came back, he changed the board, the system dont run again, then he used again the old one, he understood that problem was in configuration (the set-up was in ⁰F not in ⁰C) , maintain the old board , and get out. I asked if i had sometingh to sign, no no, when it arrived the intervention sheet, there was indication that the problem was in the board, that it was replaced...