im having problems with a tran raub300 condensor locking out on the reset relay. i thought that cond. fan 3 and 4 might not be coming on due to them being controled by an outdoor temp. type switch. i installed a ranko pressure switch to cycle the fans and all seemed well now a week later i get a call back for the same problem. any ideas? also does anyone know how or where to get old trane schematics? i got some via fax from trane but cant read them poor quality. trane is so tough to get anything from.