Originally Posted by humbug2
If I were to say what I feel this thread would instantly disappear. It is an understatement to say that I think APC customer support was misleading. As a result I am stuck with a product I really don't want unless I can come up with some way to effectively silence it.
The story: Prior posts on AVSf and APC FAQs indicate that the fan on at least some models of SmartUPS only run under certain circumstances. I e-mailed their customer support and based on the reply excerpted below ordered a SMT2200, the 2200VA model in the LCD line introduced late last year. The fan runs all the time which makes a bit of a mockery of their claim to green merit and increases my already far above average electric bills. This is normal per their response to a second e-mail on the subject where they assure me the unit is operating normally. It is a relatively quiet fan but this is a long way from silent. Since the unit is operating normally I cannot return it to PCNation where I bought it.
My e-mail query to customer support:
I am looking for a UPS to support some of the components of a home theater. It will be located where any noise would be annoying. Year around ambient temperature will be in the 69 - 76 degree F range.
The 2200VA LCD has a large fan and is overkill for my requirements. I like overkill.
The 1500VA LCD meets requirements but gives me little expansion capability.
My questions for each unit are:
1. noise when on mains power, battery fully charged, and a load of 150 watts or less?
2. Under what circumstances does the fan run? Is it variable speed?
Any relevant information is appreciated.
Customer support response:
... I understand your concern. Kindly note that the fan in new line Smart UPS (SMT/SMX) will run at maximum time with little more noise. You can see fan running in the following scenarios at maximum speed.
1. The UPS is on battery.
2. The UPS is charging the battery.
3. The UPS has a load greater than 75%.
4. The internal temperature of the UPS has reached greater than 104 degrees F (40 degrees C).
Note: The fan settings in the UPS system is not monitorable/configurable.
My painful mistake was misinterpreting maximum time to refer to the rest of the quote.