Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations strongm on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
APC SMART UPS 420 OVERLOAD FAULT
- Thread starter nkusi
- Start date
proximacentauri
Technical User
If the unit makes a load buzzing horrible noise when turned on then chances are one of the relays has welded contacts
This is a faily common problem
Hope this helps
This is a faily common problem
Hope this helps
- Status