text: <s>[INST] PowerFlex 700 Size 6, Heatsink OvrTemp Summary: Does this drive have fans?Lately we have been encountering the Heatsink OvrTemp fault on our PowerFlex 700 Size 6 drive. If there are fans they are not visible from the anywhere. It started out happing after around 20 minutes of run time and now it happens around 10 to 12 minutes. The heat sink is getting hot and we can cool it with air and the unit runs fine for longer times. I just don't want to pull it apart and not find any fans and we aren't going to spend $15000 to replace this unit just for a couple of fans. Are there Fans on this unit? If so, where are they located? Has anyone attempted to replace their fans? [/INST] Yes, it does have fans. http://literature.rockwellautomation.com/idc/groups/literature/documents/um/20b-um002_-en-p.pdf Fault 8 on page 87 refers to your exact problem. Also look at the technical data document: http://literature.rockwellautomation.com/idc/groups/literature/documents/td/20b-td001_-en-p.pdf There's the installation document: http://literature.rockwellautomation.com/idc/groups/literature/documents/in/20b-in019_-en-p.pdf Unfortunately, Rockwell does not have a service / maintenance manual for PF700, as stated in this article: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/535148 From your description, I would say the fan is no longer spinning. You should check the fan wiring (see the installation document), and verify that it is in fact spinning. They're not quiet; it should be very obvious if the fan is running. \\n </s>