Tripp Lite TMU Series Troubleshooting, Regulatory Compliance Identification Numbers, Symptom

Troubleshooting

Try these remedies for common UPS System problems before calling for assistance. Call Tripp Lite Customer Service at (773) 869-1234 before returning your unit for service.

SYMPTOM		PROBLEMS	CORRECTIONS
No AC Output (All Indicator Lights are OFF)		Unit is not properly connected to utility power	Connect unit to utility power.
		Operating Mode Switch is set to “OFF” and AC	Set Operating Mode Switch to “AUTO/REMOTE”.
		input is present.
		Operating Mode Switch is inadvertently set to	Set Operating Mode Switch to “AUTO/REMOTE”
		“CHARGE ONLY” and AC input is absent.
		Circuit breaker is tripped.	Reset circuit breaker.
		Unit has shut down due to battery overcharge (preventing	Disconnect any auxiliary chargers. Reset by moving Operating Mode
		battery damage). The problem may be with connected	Switch to “OFF”. Wait 1 minute and switch to “AUTO/REMOTE”. If
		auxiliary chargers, if any, or with the unit’s charger.	unit remains in shutdown mode after several attempts to reset,
			contact Tripp Lite Customer Service for assistance.
		Unit has shut down due to excessive battery discharge.	Use an auxiliary charger* to raise battery voltage. Check external
			battery connections and fuse. Unit automatically resets when
			condition is cleared.
		Connected batteries are dead.	Check and replace old batteries.
		Unit has shut down due to overload.	Reduce load. Reset by moving Operating Mode Switch to “OFF”.
			Wait 1 minute. Switch to “AUTO/REMOTE”.
	Battery Not Recharging (AC Input Present)	Connected batteries are dead.	Check and replace old batteries.
		Battery fuse* is blown.	Check and replace fuse.*
		Battery cabling* is loose.	Check and tighten or replace cabling.*
		Unit has shut down due to battery overcharge (preventing	Disconnect any auxiliary chargers. Reset by moving Operating Mode
		battery damage). The problem may be with connected	Switch to “OFF”. Wait 1 minute and switch to “AUTO/REMOTE”. If
		auxiliary chargers, if any, or with the unit’s charger.	unit remains in shutdown mode after several attempts to reset,
			contact Tripp Lite Customer Service for assistance.
		Charger Enable/Inhibit Switch inadvertently set to “INHIBIT.”	Set Charger Enable/Inhibit Switch to “ENABLE”
		Input circuit breaker is tripped.	Reset circuit breaker.
	All Three “BATT VOLT/CHRG CURR” LEDs	Battery is excessively discharged. Unit will shut down to	Use an auxiliary charger* to raise battery voltage. Check external
are slowly flashing (½ second flashes) with		prevent battery damage.	battery connections and fuse. Unit automatically resets when
Operating Mode Switch in the			condition is cleared.
“AUTO/REMOTE” position.
All Three “BATT VOLT/CHRG CURR” LEDs		Battery is overcharged. Unit will shut down to prevent battery	Disconnect any auxiliary chargers. Reset by moving Operating Mode
are rapidly flashing (¼ second flashes)		damage. The problem may be with connected auxiliary	Switch to “OFF”. Wait 1 minute and switch to “AUTO/REMOTE.” If
with Operating Mode Switch in the		chargers, if any, or with the unit’s charger.	unit remains in shutdown mode after several attempts
“AUTO/REMOTE” position.			to reset, contact Tripp Lite Customer Service for assistance.
Red “LOW” Battery Indicator Light is		Battery voltage is low. Unit has shut down to protect battery	If AC power (utility- or generator-supplied) is present, the unit will
flashing with Operating Mode Switch in the		from damage.	automatically reset itself and start recharging connected batteries.
“AUTO/REMOTE” position.			However, if an external charger is used to recharge the batteries,
			you will need to manually reset the unit by moving the Operating
			Mode Switch to “OFF” for two seconds then returning it to
			“AUTO/REMOTE”.
		False reading due to undersized or insufficiently connected	Use sufficient size DC cable sufficiently connected to UPS System.
		DC cabling.
	Red “LOAD” Operation Indicator Light	Inverter is overloaded. Unit will automatically shut down after	Reduce load. Reset by moving Operating Mode Switch to “OFF”.
flashing		5 seconds.	Wait 1 minute. Switch to “AUTO/REMOTE”.
* User-supplied.

Regulatory Compliance Identification Numbers

For the purpose of regulatory compliance certifications and identification, your Tripp Lite product has been assigned a unique series number. The series number can be found on the product nameplate label, along with all required approval markings and information. When requesting compliance information for this product, always refer to the series number. The series number should not be confused with the marking name or model number of the product.

This product designed and engineered in the USA.

12T 200409045 93-2400