Riello UPS Sentinel Tower STW 6000 User Manual (English)

Questions and Answers:

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Jennifer SantiagoSep 10, 2025
What does it mean if my Riello UPS Sentinel Tower STW 6000 displays A30 or A32 and won't start?
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  Theresa RodriguezSep 10, 2025
  If the Riello UPS Power distribution unit display shows one or more of the following codes: A30, A32 and the UPS does not start up, it may be because the ambient temperature is below 0°C or there is a fault in heat sink temperature probe. Heat the environment and wait for the heat sink temperature to rise above 0°C before starting the UPS. Alternatively, activate the maintenance bypass (SWMB) if present, turn the UPS off and back on again and exclude the maintenance bypass. If the problem persists, contact the nearest service centre.
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Andrea FinleyAug 25, 2025
What does it mean if my Riello UPS Power distribution unit display shows F37 or L37?
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  John MarshallAug 26, 2025
  If your Riello UPS Power distribution unit display shows one or more of the following codes: F37, L37, it could be due to several factors: * Ambient temperature exceeding 40°C. * Heat sources positioned too close to the UPS. * Obstructed ventilation slits or proximity to walls. * A fault within the temperature probe or in the battery charger cooling system. To address this, eliminate the cause of the overtemperature. Activate the maintenance bypass (SWMB) if present, open the battery fuse holder isolators (SWBATT), and allow the battery charger heat sink to cool down. Then, close the battery fuse holders. If the problem continues, contact your nearest service center. Warning: Never open the SWBATT fuse holder isolators during battery operation.
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Joseph HarringtonAug 27, 2025
What does it mean if my Riello UPS Power distribution unit shows codes F03, F04, F05, A08, A09, or A10?
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  Michael SullivanAug 27, 2025
  If your Riello UPS Power distribution unit display shows one or more of the following codes: F03, F04, F05, A08, A09, A10, check the connection on the phases, ensuring that with the three-phase connection the switch is in the “? 3~” position and that Phase 2 and Phase 3 are correctly connected. If you are using a single-phase connection, make sure the switch is in the “? 1~” position. If the issue persists, it is possible that the internal protection fuses on the phase or on the input relay are broken, and you should contact the nearest service centre.
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rwilliamsAug 27, 2025
What to do if my Riello UPS Sentinel Tower STW 6000 Power distribution unit display shows code A26?
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  Rhonda EricksonAug 27, 2025
  If the Riello UPS Power distribution unit display shows the code A26, it indicates that the battery fuses are blown or the fuse holder isolators are open. Replace the fuses or close the battery fuse holder isolator (SWBATT). If necessary, replace the fuses with others of the same type.
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mariabentonAug 30, 2025
What to do if my Riello UPS Sentinel Tower STW 6000 Power distribution unit has no power to the load?
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  Sara DouglasAug 30, 2025
  If no power reaches the load from your Riello UPS Power distribution unit, it might be due to a few reasons: * A missing connection to the output terminal: Connect the load to the terminals. * The UPS is in standby mode: Run the start-up sequence. * The STAND-BY OFF mode is selected: Change the operating mode, as this mode only powers the loads during a blackout. * A malfunction of the UPS with the automatic bypass out of use: Insert the maintenance bypass (SWMB) and contact the nearest service centre.
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meganlewisAug 31, 2025
What does it mean when my Riello UPS Sentinel Tower STW 6000 Power distribution unit displays codes A22, F23, or L23?
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  lwatsonAug 31, 2025
  If the Riello UPS Power distribution unit display shows one or more of the following codes: A22, F23, L23, it means that the load applied to the UPS is too high. Reduce the load to below the 100% threshold (or user threshold for the code A22).
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Calvin SalasSep 14, 2025
What does it mean if my Riello UPS Sentinel Tower STW 6000 display shows F19?
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  Jamie ColeSep 14, 2025
  If the Riello UPS Power distribution unit display shows the code F19, it indicates a battery charger fault. Open the battery fuse holders (SWBATT) and insert the maintenance bypass (SWMB) if present, then turn the UPS off completely. Turn the UPS back on, and if the problem persists, contact the nearest service centre.
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Adam LewisSep 12, 2025
What does it mean if my Riello UPS Sentinel Tower STW 6000 display shows F09 or F10?
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  Kelly CamachoSep 12, 2025
  If the Riello UPS Power distribution unit display shows one or more of the following codes: F09, F10, it may be because the voltage value of phase 1 is not sufficient to pre-load the UPS or there is a fault in the UPS input stage. Wait for the input network voltage values to stabilise within the ranges accepted by the UPS. If the problem persists, activate the maintenance bypass (SWMB) if present, turn the UPS off then back on again, and exclude the maintenance bypass. If the problem continues, contact the nearest service centre.
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Rhonda DixonSep 9, 2025
What to do if my Riello UPS Sentinel Tower STW 6000 Power distribution unit display shows code C01?
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  Eric ThompsonSep 9, 2025
  If the Riello UPS Power distribution unit display shows the following code: C01, it means that the jumper is missing from the R.E.P.O. connector or it is not inserted correctly. Assemble the jumper or make sure that it is inserted correctly.
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Brittany HarveySep 6, 2025
What does it mean if my Riello UPS Sentinel Tower STW 6000 Power distribution unit display shows code A13?
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  David LewisSep 6, 2025
  If the Riello UPS Power distribution unit display shows the code A13, the issue is due to the protection device upstream from the bypass line being open (only if the bypass is separate) or the bypass isolator being open (SWBYP only if the bypass is separate). Restore the protection device upstream, ensuring there is no overload or short circuit at the output of the UPS. Also, close the isolator.