Fans always running on Smart-UPS 2200 RM XL

[Anonymous user]

I just reconnected my Smart-UPS 2200 RM XL after a few months of being offline (but left charged), and the fan is always running at low speed now which I do not remember being the case before.  I have a single SUA48RMXLBP attached and an AP9630 card in there which reports:

Capacity: 100.0%

Battery voltage: 55.35 VDC

Load current: 0.0 Amps

Internal temperature: 18.4°C

APC OS version: v6.5.6

Firmware revision: 690.19.D

Serial Number: JS1020291047

The batteries were last replaced in April of 2017.  Prior to the shutdown I recall it being completely silent when not charging or on high load / high temperature, am I incorrect in my recollection of the fan activity or is there something wrong with the UPS that I should address?

Thanks!

[Brad_C]

On 10/11/2019 6:39 AM, Kristin said:

I just reconnected my Smart-UPS 2200 RM XL after a few months of being offline (but left charged), and the fan is always running at low speed now which I do not remember being the case before. 

All of my later model SUA units run the fan at low speed full time.

[BillP · Accepted solution]

You may want to refer to this KBase Article Smart-UPS fan operation parameters