Emerson 208V Manuel D’Utilisation

An audible alarm will be used in conjunction with the visual indicators to indicate to the user a 

change in UPS operating status. The audible alarm will enunciate as given in Table 9.

In the event of an issue with the UPS, refer to Table 10 to determine the cause and solution. If the 

issue persists, contact Emerson Channel Support.

Battery discharge

half-second beep every 10 seconds

Low battery

Two half-second beeps every 5 seconds

UPS fault, load on bypass

1-second beep every 4 seconds

UPS fault, no power to load

Continuous

Overload

half-second beep every half second

Battery replacement

2-second beep every 60 seconds

Battery loss

Continuous

Wiring problem (including line-to-neutral reversal

or a loss of proper grounding for UPS)

Continuous

Bypass reminder

1-second beep every 2 minutes

UPS fails to start when the 

On/Alarm Silence/Manual 

Battery Test button is pressed

UPS is short-circuited or overloaded

Ensure UPS is Off. Disconnect all loads and 

ensure nothing is lodged in output receptacles. 

Ensure loads are not defective or shorted 

internally.

Battery indicator is illuminated

UPS not plugged in

UPS is operating from battery mode, ensure 

UPS is securely plugged into the wall 

receptacle.

UPS input protection circuit breaker 

has opened

UPS is operating from battery mode. Save data 

and close applications. Reset UPS input 

breaker, then restart UPS.

Utility power is out of tolerance

UPS is operating from battery mode. Save data 

and close applications. Ensure utility supply 

voltage is within acceptable limits for UPS.

UPS has reduced battery 

backup time

Batteries are not fully charged

Keep UPS plugged in continuously at least 24 

hours to recharge batteries.

UPS is overloaded

Check load level indicator and reduce the load 

on the UPS.

Batteries may not be able to hold a 

full charge due to age

Replace batteries. Contact your local dealer, 

Emerson representative or Emerson Channel 

Support for replacement battery kit.

Fault and Bypass indicators and 

all LED segments of battery 

level indicator are illuminated

UPS overloaded or load is faulty

Check load level indicator and remove non-

essential loads. Recalculate the load and reduce 

number of loads connected to UPS. Check load 

for faults.

Fault and Bypass indicators and 

diagnostic A indicator are 

illuminated

UPS shutdown due to 

overtemperature condition. Load is 

on bypass power

Ensure UPS is not overloaded, ventilation holes 

not blocked, or room ambient temperature is not 

excessive. Wait 30 minutes to allow UPS to cool, 

then restart UPS. If UPS will not restart, contact 

your local dealer, Emerson representative or 

Emerson Channel Support.