text: <s>[INST] Ultra 100 IPM Thermal Protect Fault not resetting We have several 1398-DDM-019 Ultra 1000 dirves that all simultaniously faulted with IPM Thermal Protect Fault. We cannot reset or clear these faults, even with drives disabled, have re-downloaded configuration via UltraMaster, still faults right away. Is this a blown IPM module? Should I just replace the drives? [/INST] It could be related to AC line noise…. Take a look to the following technotes: Aid 20974 – Aid 21657 (this is referred to Ultra3000, but is the same for Ultra100) Hope this helps… - fuzzy logic \\n </s>