Inductive kickback can do it. Depends on the load and the portion of the
cycle where the switching occurs.
-----Original Message-----
From: George Skorup (Cyber Broadcasting)
Sent: Sunday, May 03, 2015 2:13 AM
To: [email protected] ; [email protected]
Subject: [AFMUG] More APC faults
Just had to run out to a tower with a Back-UPS Pro 1500. Error code F06
which according to APC literature is 'Relay Welding'. How awesome. Next
time I'm taking my shotgun.
I cycled it and it came back up fine. Even unplugged and replugged and
it transferred to and from battery just fine. There's 60 watts of load
on the thing, so I don't see how there can be relay fusing. Unless we
had a quick power blip and the thing just went stupid, which is typical
for APC's. Or the full moon, who the hell knows.
