text: <s>[INST] PowerFlex 400 Fram size H overtemp trip I am having trouble with a VSD. Even if it has only been running for 2 minutes, then it comes up with a HeatSink OverTemp (F008) error. There seems to be an error with the sensing circuit since it tells me that the temperature is 140 deg C (B014) but it is NOT – if I switch the drive completely off and wait for it to discharge before switching on again (approx 3 minutes), then it comes up fine with a temperature of only 41 or so degrees C.All of them are 22C-D460A103 Series A, Manuf 19 August 2008, [/INST] It could be a faulty sensor...anyway, try to see if all the fans start when PF400 starts by run command....if just one of the fans doesn't start, then you have to replace it. Hope this helps… - fuzzy logic \\n </s>