Greetings,
I have an inverter drive that is not happy. I have an F-905 error that keeps coming up. It is a problem with a thermistor, and I have found the thermistor and found the correct resistance with a potentiometer to keep me running. Well it only worked for a little while, and i cannot find the correct resistance again. So I believe that there is more to this problem. I have checked just about everything else and it all comes down the the drive itself. This is getting way above my head, and I was wondering if anyone had some suggestions where to get this thing fixed. I found Alfa-inc. and they have been fairly reasonable, with good turn around time. Also, is there any kind of upgrade that is out there? Thank for the help in advance!