How do I troubleshoot a Smart-UPS Online (SURT/SURTD) with no signs of life?
Smart-UPS SURT/SURTD shows either:
- No sign of life with no evidence of prior faults
- Battery Capacitor Soft Start Fault
Smart UPS Online 1-10kVA (SURT,SURTD)
All models, All Serial Numbers
Smart UPS RT (SURT and SURTD) units will not start without sufficient battery voltage, making it difficult to isolate the cause of the issue.
●Step 1) How long have batteries been connected without unit being started?
–Consider Step 6 & Step 7 if > 1 week
●Step 2) What is the ambient storage temperature?
–Consider Step 6 & Step 7 if > 75 degrees F
●Step 3) Are UPS internal batteries connected & seated properly?
–No: Properly connect & seat batteries
–Yes: Disconnect and reseat batteries *USE PROPER BATTERY CONNECTION PROCESS FROM USER MANUAL
●Step 4) Is UPS connected to utility power AND are input breakers on AND are fans spinning?
–Yes: UPS is charging (If input power is good) - Attempt to turn UPS on after 5 minutes of charging
–No: Properly connect UPS to utility and turn input breakers on – go back to Step 4
●Step 5) Disconnect Extended Run Battery Packs and All Internal Battery Modules.
●Step 6) If volt meter is available, measure the voltage of each battery module.
–Units 3kva or Greater: Replace batteries if ANY module measures <80vdc
–Units Less than 3kva: Replace batteries if ANY module measures <40vdc
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