What to do if Emerson Liebert APS shows Power Module Over Temp Shutdown?
- MmolinagreggAug 26, 2025
If the Emerson UPS displays 'Power Module Over Temp Shutdown', it means one or more power modules has stopped operating due to an internal over temperature. Check the air filters behind the bezels and clean them if needed. Also, check if the ambient temperature is too high. If these steps don't resolve the issue, contact your local Liebert Service representative.













