Our Brands

Search FAQs

Why has PowerChute Software lost communication with UPS after communication cable has been unattached and reattached?

After detaching the communication cable and then reattaching the communication cable, PowerChute Software does not reestablish communications with the UPS.

PowerChute Serial Shutdown
PowerChute Business Edition

All supported OS communicating with UPS via USB or Serial to Smart-UPS

NOTE: PowerChute Business Edition versions up to 10.0.5 are incompatible with Back-UPS.

The communications cable was unattached while the PowerChute service or daemon was running on the OS.


1 – Stop the PowerChute service or daemon before detaching and reattaching the communications cable.

2 – If the cable is unattached while the server or daemon is running, you can re-establish communications by

a: Stopping and restarting the server or daemon.

b: If step a does not resolve the issue, stop the service or daemon again, reattach the cable, and then brain-dead the UPS.  See Video: How to perform a cold start and brain dead on Smart-UPS for instructions on how to brain-dead a Smart-UPS.

c: For other lost communication troubleshooting steps, see Schneider Electric Video: Troubleshooting no communication between UPS and PowerChute Business Edition or PowerChute Serial Shutdown

APC India

Explore more
PowerChute Business EditionPowerChute Serial Shutdown
Explore more
PowerChute Business EditionPowerChute Serial Shutdown
Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.