Possible Causes
AC fuse has blown.
Bad AC outlet.
Overload.
Low Battery Voltage.
Overload.
Internal DC fuse has blown.
AC mains voltage is too low, too high or
too noisy.
Batteries getting old.
†
Fuse rating is wrong.
MOV’s damaged after lightning strike.
‡
Battery drained. Battery protection
circuit has activated.
Problem
Green AC ON light does not
turn on.
UPS keeps shutting off.
No power to equipment even
with power switch ON.
Yellow INV ON light is flashing
even though AC mains is OK.
Insufficient holdup time.
AC fuse keeps blowing.
UPS does not turn on
(especially after a long power
outage.)
Trouble-shooting & Maintenance
Suggested Solutions
Replace with same type & rating of fuse.
Use another outlet.
Reduce load, then reset UPS (turn power switch off/
on.
Let batteries recharge.
Reduce load, then reset.
Return UPS to authorized repair center for repair*.
Wait for normal AC to return.
Reduce load.
Correct line voltage with line conditioner**
Return UPS to factory for replacement.*
Replace with proper fuse.
Return UPS to authorized repair center or factory for
repair.*
Turn off UPS. Turn off all load connected to UPS.
Wait 5 minutes. Turn on UPS. Let batteries
recharge 24 hours.
WARNING: Please do not open the case and attempt to repair the UPS. High voltages are present and there are no user servicable parts
inside. Repairs can be performed only at the factory or at an authorized repair centers by qualified personnel with protective equipment.
When you encounter difficulties with your UPS, please consult the relevant sections of this manual and check the trouble-shooting guide
below. If you still have problems, please call TSi Power’s Customer Service at (715) 623-0636.
* Please call TSi Power to obtain RMA number before returning the UPS.
** Some areas may experience chronic brownout conditions as a result of power shortages or overload. In addition, some buildings may have excessive AC
line noise due to old air-conditioners, irregular loads, etc. A line conditioner/line filter between the UPS and the AC outlet is a possible solution in such
cases.
†
Battery Replacement: Under normal conditions, the battery lifetime is approximately 4 years. Contact factory to replace batteries. Under severe
conditions (more than 150 full discharge-recharge cycles per year), the batteries may have to be replaced more frequently.
UPS Technical Specifications
11
© Copyright—2000 TSi Power Corporation. All rights reserved.
TSi Power’s ongoing product improvement process makes specifications subject to change.
Other company’s product names herein are for identification purposes only and may be trademarks of their respective companies.
