1) When operating in bypass mode, the UPS beeps every 2 minutes. If the “Function” key is pressed for more
than 2 seconds, the alarm will not beep (silence function). Press the “Function” key more than 2 seconds
again to resume the alarm function.
2) If the utility power indicator blinks, it shows that the voltage or frequency of the utility power is out of the
input range of the UPS or there are problems with reversed polarity (L/N) of site wiring or disconnect to the
ground for protection.
3) The other four display pages are load percent page, actual load page, input information page and the
maximum temperature page.
Notes: When operating in bypass mode, the backup function of the UPS is not available and the power used by the
load is directly from the utility power via internal EMI filter.
Figure 4-4 Bypass Mode
4.2.4 LCD indication of UPS alarm status and faults
In the event of an UPS fault, UPS enters fault operation mode, at this point, the fault icon turns on
consistently, the buzzer beeps continuously and the data information area shows current fault code (refer to
table 4-2), the display on the front panel is shown as the figure 4-5, users can switch to output page by
pressing function button.
Figure 4-5 Fault display
When a warning occurred, the fault icon blinks every second, and users can switch to the alarm display page
shown as the figure 4-6 to check the warning code.