Just intsalled a TS 550 and still will not complete a tank test. Do not have the SCALD option. Have shut the site down for 12 hrs 3 times to get enough quiet time still it aborts after 8 sec everytime.
I shut the site down and stayed with it all night . Swapped everytrhing except the wire and stil had no luck. Went back to the site and pulled new wire and going to have to wait til Sunday night when they close early and see.