MGE UPS Systems 4000 RT Troubleshooting Leds 21, But the operation is downgraded, By the UPS

5. Troubleshooting
5.1 Troubleshooting LEDS (21) and (22)
20	21	If LED (21) is ON:
		the equipments are protected by the UPS
		but the operation is downgraded.
	22	If LED (22) is ON:
		the equipments are no longer protected
		by the UPS.
		Press the escape button (24) to stop the
LOAD PROTECTED		audible alarm.
x.xkVA / xxx% LOADED
ENVIRONMENT FAULT		Note :
SINGLE UPS	24
		In case of "MULTIPLE FAULT", press the
ESC		"Enter" button (27) and the scroll button (25)
	25	to get access to further details.
	27	In case of "LCM WARNING", refer to LCM
		section (see section 6).

5.2 Troubleshooting not requiring MGE UPS SYSTEMS after-sales support

LOAD PROTECTED

x.xkVA / xxx% LOADED

x x x x x x x x FAULT

SINGLE UPS

ESC

Press the "Enter" button (27) to display the details below :
Displayed details	Signification	Correction
NO BATTERY	The battery is incorrectly connected	Check battery connections
I/O BAD CONNECTION	AC source is not connected to the correct	Check AC wiring
	terminals
NO POWER MODULE	The power sub-module is not inserted	Check power sub-module connections (see
		section 7.1)
NO BATTERY MODULE	The battery sub-module is incorrectly	Check battery connections (see section 7.2)
	connected
INV THERM OVERLOAD	The UPS shuts down automatically because	Check the power drawn by the connected
	of a major overload.	devices and disconnect any non-priority
		devices.
INVERT LIMITATION	Short circuit conditions on output devices	Check the installation at the UPS output
		(wiring, fault equipment)

34008030EN/AA - Page 28