Liebert GXT2-6000 RT208 user manual Only phase angles of 120, 180 or 240 degrees ±10

			Troubleshooting
Table 6	Troubleshooting guide
Problem		Cause	Solution
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			running. The phase angle is detected at startup and
		L1 to L2 phase angle	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.
Fault indicator and diagnostic			UPS has shut down due to the REPO (Remote Emergency
indicators B and C are		REPO is currently activated.
			Power Off). The output cannot be started by any method.
illuminated.
			UPS is OFF due to previous REPO (REPO is no longer
Fault indicator and diagnostic		UPS output is OFF from a	activated). Once utility power is restored, press the OFF
indicators B and D are		previous REPO command.	button twice within four seconds (to clear the alarm), then
illuminated.		REPO is no longer activated.	press the ON button to start UPS (Auto-restart is NOT
			possible).
			Your UPS has received a signal or command from the
Fault indicator and diagnostic		UPS shutdown due to a	attached computer. If this was inadvertent, ensure the
indicators C and E are		command from the	communication cable used is correct for your system. For
illuminated.		communications port(s).	assistance, contact your local dealer, Liebert
			representative or the Liebert Worldwide Support Group.
Fault indicator and diagnostic			UPS requires service. Contact your local dealer, Liebert
indicators D and E are		UPS charger fault.
			Representative or the Liebert Worldwide Support Group.
illuminated.
			Check battery connections, completely power down and
AC Input indicator is On &		Battery source is not	restart UPS.
			NOTE: If the battery circuit opens while the UPS is
Battery indicator is flashing.		available; continuous horn.
			running, it will be detected when the next battery test is
			performed.
		Bypass voltage is present,	The AC input powers the PFC input and serves as the
			bypass source. If the AC is present but the voltage or
		but is disabled for use
			frequency exceeds the acceptable range for safe
Bypass indicator is flashing.		because the voltage or
			operation with a load, the bypass will be disabled and this
		frequency is outside
			indicator will flash, indicating that the bypass is
		acceptable limits.
			unavailable.

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