APC SY160K160H User Manual

The display interface will identify the number of the power distribution module that has caused an 
alarm or warning. 

High Module Current 

The high module current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

High Subfeed Current

The high subfeed current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

Low Module Current

The low module current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

Low Subfeed Current 

The low subfeed current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

Maximum Module Current

The maximum module current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

Maximum Subfeed Current

The maximum subfeed current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

Minimum Module Current

The minimum module current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

Minimum Subfeed Current

The minimum subfeed current 
threshold has been exceeded.

Evaluate the threshold setting. If necessary, adjust 
it for your situation.

Modular Distribution 
Communication

Communication has been lost 
with the modular distribution 
breakers.

Check the communication cables to ensure they 
are properly connected. Contact APC Customer 
Support.

Module Breaker Open

A modular circuit breaker is 
open.

Check the modular circuit breakers to see if one 
has overloaded. Replace if necessary.

Subfeed Breaker Open

A subfeed circuit breaker is 
open.

Check the subfeed circuit breakers to see if one 
has been over-loaded.