What does it mean when LED (22) is ON in my Eaton MX 4000 RT UPS?
- VvegadannySep 13, 2025
When LED (22) is ON in your Eaton UPS, the equipments are no longer protected by the UPS.

What does it mean when LED (22) is ON in my Eaton MX 4000 RT UPS?
When LED (22) is ON in your Eaton UPS, the equipments are no longer protected by the UPS.
| Output Power Capacity | 3600 W |
|---|---|
| Output Power Factor | 0.9 |
| Topology | Online Double Conversion |
| Battery Type | Sealed Lead-Acid (SLA) |
| Communication Ports | USB |
| Operating Temperature | 0 to 40 °C |
| Form Factor | Rack/Tower |
| Frequency | 50/60 Hz |
| Power Rating | 4000 VA / 3600 W |
Procedure for connecting internal batteries for initial start-up.
Instructions for orienting the panel and mounting in a rack.
Guide to rack mounting the UPS module, including battery tray removal.
Detailed steps for rack mounting the UPS/battery module onto rails.
Recommendations for upstream/downstream protection and cable sizing.
How to connect power cables to the UPS terminals.
Connecting equipment via IEC output receptacles.
Steps for the initial power-up and checks.
Steps for completing the UPS start-up process.
How the UPS functions when on battery power.
Steps for safely shutting down the UPS.
User-resolvable issues and their solutions.
Issues requiring professional assistance from Eaton.
Specific troubleshooting for ModularEasy parallel configurations.