Troubleshooting - Njoy UPCMTOP960HASCG02B User Manual

So the function is not suitable to some sensitive loads, and the regions
where the mains power is unstable.
Set the function:
The function could be enabled through the LCD setting.
7.2 Converter Function
Brief introduction of Converter function:
In converter mode, the UPS would free run with fixed output frequen-
cy (50Hz or 60Hz). Once the mains power is loss or abnormal, the UPS
would transfer to Battery mode and the load is supplied continuously.
The great virtue is the output frequency is fixed, which is required by
some very sensitive loads. But the disadvantage is the load capacity of
UPS should be derated to 60% in converter mode.
Set the function:
The function could be enabled through the LCD setting.
Trouble Shooting
8
If the UPS system does not operate correctly, first check the operating
information on the LCD display. Please attempt to solve the problem
using the table below. If the problem still persists, consult your dealer.
8.1 Trouble Shooting According to Warning Indication
Warning Problem
code Displayed
51 Site fail
53 Fuse open
56 Battery low
Possible cause
The ground wire is
disconnected, or
phase and neutral
conductor at input of
UPS system are
reversed
Input fuse break
Battery
Volt/Cap/Remain
Time is low
Remedy
Check the Ground wire status;
Reverse mains power wiring
Check the input fuse status
When audible alarm sounding
every second, battery is almost
empty
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