What should I do if my Riello MST 30 UPS display shows F19 or F20?
If the Riello UPS display shows one or more of the following codes: F19, F20, it indicates a battery charger fault. Open the battery fuse holders (SWBATT) and insert the maintenance bypass (SWMB), then turn the UPS off completely and turn it back on.
What does it mean if my Riello UPS display shows A26 or A27?
If the Riello UPS display shows one or more of the following codes: A26, A27, it indicates that the battery fuses are blown or the fuse holder isolators are open. Replace the fuses or close the isolators (SWBATT). If necessary, replace the fuses with others of the same type.
What does it mean if my Riello MST 30 display shows F03, F04, F05, A08, A09, or A10?
If the Riello UPS display shows one or more of the following codes: F03, F04, F05, A08, A09, A10, it indicates no connection on one or more phases. Check the connections to the terminals.
What does code C01 mean on my Riello MST 30 UPS display?
If the Riello UPS display shows C01, it means 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.
What does it mean if my Riello MST 30 display shows A30, A32, A33, A34 and the UPS does not start up?
If the Riello UPS display shows one or more of the following codes: A30, A32, A33, A34 and the UPS does not start up, it indicates that the ambient temperature is below 0°C. Heat the environment and wait for the heat sink temperature to rise above 0°C before starting up the UPS. Alternatively, there may be a fault in the heat sink temperature probe. Activate the maintenance bypass (SWMB), turn the UPS off and back on again, and then exclude the maintenance bypass.
What does it mean if my Riello UPS display shows F34, F35, F36, L34, L35, or L36?
If the Riello UPS display shows one or more of the following codes: F34, F35, F36, L34, L35, L36, it indicates a high ambient temperature. This could be due to the ambient temperature being higher than 40°C, heat sources close to the UPS, or ventilation slits being obstructed or too close to the walls. Activate the maintenance bypass (SWMB) without switching off the UPS to cool the heat sink more rapidly. Eliminate the cause of the overtemperature and wait for the heat sink temperature to drop before excluding the maintenance bypass. Alternatively, it could be caused by a fault in the temperature probe or UPS cooling system. In this case, insert the maintenance bypass (SWMB) without switching off the UPS to cool the heat sink. Turn the UPS off and back on again, and then exclude the mainte...
Provides crucial safety warnings for handling internal batteries and hazardous voltages.
Warns about explosion risk with incorrect battery types and provides replacement guidance.
Highlights instructions that require two-person operation for safety and handling.
Warns about the requirement for a 4-wire three-phase distribution system.
Illustrates connection diagrams for different UPS configurations without neutral modification.
Details UPS isolators, battery fuses, and input/output currents.
Recommends circuit breakers upstream of the UPS and specifies ratings.
Emphasizes connecting the input neutral and warns against connecting output to input neutral.
Details connection procedures for models with separate bypass, including neutral handling.
Details installing a bypass for UPS replacement without power interruption.
Stresses connecting the 'SERVICE BYPASS' terminal to the auxiliary contact.
Details the procedure for starting the UPS using the mains power.
Explains how to start the UPS using only battery power.
Provides the correct steps for turning off the UPS.
Explains ON LINE, ECO, SMART ACTIVE, and STAND-BY OFF modes and their functionalities.
Details the procedure for using the maintenance bypass for safe maintenance.
A critical safety warning for performing maintenance inside the UPS.
Lists Serial (RS232/USB) ports and expansion slots for communication boards.
Introduces PowerShield³ software for UPS management and monitoring.
Mentions special software for configuring important UPS parameters.
Addresses issues where the UPS fails to enter stand-by mode.
Troubleshoots scenarios where the load is not receiving power from the UPS.
Helps resolve UPS operating on battery despite mains power availability.
Addresses issues related to input voltage falling outside acceptable ranges.
Troubleshoots startup failures due to temperature or probe faults.
Addresses voltage imbalance issues between input phases.
Covers faults related to anomalous loads, connections, and fuses.
Solves issues with upstream bypass protection devices or bypass isolator.
Addresses battery charger faults and blown battery fuses.
Deals with input relay locks and situations where the applied load is too high.
Addresses output overloads and short circuits at the output.
Indicates battery failure in efficiency tests, recommending replacement.
Troubleshoots high temperatures, heat sources, or obstructed ventilation slits.
Solves issues with static bypass rupture or fault.
Addresses issues with the UPS display or its power supply.
Covers inverter synchronization issues and frequency tolerance deviations.
Addresses over/undervoltages on input and bypass lines.
Reports missing batteries, open fuses, and temperature probe issues.
Covers high current peaks, load threshold breaches, and open output isolators.
Reports internal communication errors and incorrect input phase sequences.
Covers faults related to input fuses, relays, and precharge circuits.
Addresses inverter stage anomalies and battery over/undervoltages.
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