Emerson GXT2-10000RT208 user manual Troubleshooting guide Problem Cause Solution

Troubleshooting

Table 5	Troubleshooting guide
Problem		Cause	Solution
UPS fails to start when the		UPS is short-circuited or	Ensure the UPS is OFF. Disconnect all loads and ensure
			nothing is lodged in output receptacles.
ON button is pressed.		overloaded.
			Ensure the loads are not defective or shorted internally.
		UPS not plugged in.	UPS is operating in Battery Mode, make certain UPS is
			securely plugged into the wall receptacle.
Battery indicator is		UPS input protection fuse	UPS is operating in Battery Mode. Save data and close
		has blown/opened.	applications. Replace UPS input fuse, then restart UPS.
illuminated.
		Utility voltage out of UPS	UPS is operating in Battery Mode. Save data and close
			applications. Ensure utility supply voltage is within
		input range.
			acceptable limits for UPS.
		Batteries are not fully	Keep UPS plugged in continuously at least 24 hours to
		charged.	recharge batteries.
UPS has reduced battery		UPS is overloaded.	Check load level display and reduce the load on the UPS.
time.
		Batteries may not be able to	Replace batteries. Contact your local dealer, Liebert
			representative or the Liebert Worldwide Support Group for
		hold a full charge due to age.
			replacement battery kit.
Fault and Bypass indicators		UPS overloaded or load	Check load level display and remove non-essential loads.
and all Load Level indicators			Recalculate the load and reduce number of loads
		equipment is faulty.
are illuminated.			connected to UPS. Check load equipment for faults.
Fault and Bypass indicators		UPS control power supply	UPS requires service. Contact your local dealer, Liebert
and diagnostic indicator C are
		fault.	representative or the Liebert Worldwide Support Group.
illuminated.
Fault and Bypass indicators		UPS PFC (Power Factor	UPS requires service. Contact your local dealer, Liebert
and diagnostic indicator D are
		Correction Circuit) fault.	representative or the Liebert Worldwide Support Group.
illuminated.
		UPS internal fan has a	Ensure the UPS is not overloaded, ventilation openings
			are not blocked and room ambient temperature is not
Fault and Bypass indicators		problem or UPS shutdown
			excessive.
and diagnostic indicator A are		due to temperature
			Wait 30 minutes to allow UPS to cool, then restart UPS.
illuminated.		condition. Load is on bypass
			If UPS does not restart, contact your local dealer, Liebert
		power.
			representative or the Liebert Worldwide Support Group.
Fault and Bypass indicators		UPS internal DC bus	UPS requires service. Contact your local dealer, Liebert
and diagnostic indicator B are
		overvoltage.	representative or the Liebert Worldwide Support Group.
illuminated.
Fault and Bypass indicators			UPS requires service. Contact your local dealer, Liebert
and diagnostic indicator E are		UPS inverter fault.
			Representative or the Liebert Worldwide Support Group.
illuminated.
Fault and Bypass indicators		Inverter-to-Inverter	UPS requires service. Contact your local dealer, Liebert
and diagnostic indicators A
		Communications Failure	Representative or the Liebert Worldwide Support Group.
and B are illuminated.
Fault indicator and diagnostic			Replace batteries. Contact your local dealer, Liebert
indicators A and C are		UPS failed the battery test.
			representative or the Liebert Worldwide Support Group.
illuminated.
			Only phase angles of 120, 180 or 240 degrees
			(±10 degrees) are permitted. These must be compatible
			with the selections in the configuration program.
			Or the phase angle has changed while the UPS was
Fault indicator and diagnostic		L1 to L2 phase angle	running. The phase angle is detected at startup and
			cannot be changed to a different power source while
indicators A and D are
		unacceptable.	running.
illuminated.
			Turn the UPS Off and wait until the fans stop. Apply input
			AC power. The UPS will reprogram the phase angle to
			match the utility, if the utility is 120, 180 or 240 degrees
			between L1 and L2. If this does not resolve the issue,
			contact a qualified electrician to verify the site wiring.

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