Section III
Operation
006-0007068 UPS-1500-S-2S Guide
Rev E
27 of 60
09/10/20
Fan Service Required Indicator (LED in position C0)
The LED in position C0 indicates whether the two cooling fans in the rear panel of the UPS are OK or if
their performance is degraded, according to the table below:
LED Appearance
Description
Indication
Green
Both Fans are OK
Amber
One or Both Fans Have Recently Had Degraded Performance
and Diagnostic Tests are Being Performed
Red
One or Both Fans Presently Have Degraded Performance
Battery Pack Service Required Indicator (LED in position C1)
The LED in position C1 indicates whether the battery pack is OK or if its storage capacity has been degraded
compared to its rated value, according to the table below:
LED Appearance
Description
Indication
Green
Battery Pack is OK
Amber
Battery Pack’s Calculated Maximum Storage Capacity is
<75% of its Rated Value
Red
Battery Pack’s Calculated Maximum Storage Capacity is
<50% of its Rated Value
