SUM1500RMXL2U - Anomalous State

[kylebroflovski]

Greetings,

I would appreciate any help or additional insight.

This computing site uses 1 APC Smart-UPS SUM1500RMXL2U (www.apc.com/us/en/product/SUM1500RMXL2U/). For this model, the LED panel has 4 colummns. Left-to-right and top-to-bottom, the columns are:

1: Load
2: AVR Trim/Boost,    On Line,       Bypass
3: Overload,          On Battery,    Replace Battery
4: Battery Charge

Some indeterminate event occurred. What specifically, is unbeknownst to me. The first time any indication that a negative event occurred is that the next self test resulted in a failure, and the following LED configuration:

1: All 5 flashing
2: AVR Trim/Boost flashing
   On Line flashing
   Bypass steady on
3 & 4: Off

There is the low pitch sound of the power module disconnecting the battery and connecting the receptacles directly to line (a single "thump"). There is no audible tone.

While this is an unrecognized LED configuration, the first suspicion is to replace the RBC43 SSLA battery. The UPS is disconnected from line. That battery during which this event first occurred is replaced with a new one. The UPS is re-connected to line. Following is what is then observed:

* If the UPS is powered on without being connected to the battery, it completes the portions of the self test that excludes the battery, and both the Replace Battery LED and the short intermittent audible tone are enabled. This is expected normal behavior.

  Upon connection of the new battery, i.e. it is as if the battery is hot-swapped, the Replace Battery LED and the short intermittent audible tone are disabled. This is expected normal behavior.

  The UPS behaves and runs as usual, until the next self test. When the self test occurs, the above behavior and LED configuration, which caused me to initially suspect the former battery, returns.

* If the UPS is powered on being connected to the battery, during the self test, the above behavior and LED configuration occur immediately after.

Again, I would appreciate any help or additional insight as to what is going on with the UPS.

Thanks to everyone in advance.

[Teken]

If Power Chute software is loaded and in use I would check the logs to see what error codes have been captured. Once known reach out to APC Support for insight and feedback as to possible next steps. Once you have obtained any logged information you can try the following.

1. Using Power Chute, default the unit to factory settings.

2. Brain Dead: Unplug AC Mains from the wall. Disconnect the battery from the UPS. Press and hold the power button until you hear a click / beep. Reconnect the battery cartridge and AC Mains to the UPS.

3. Battery Calibration: Using Power Chute software initiate a battery calibration on the new battery. Insure there is at least 30% connected load to the UPS. Once that process has completed let the UPS recharge the new cells and report back if the runtime falls within the expected duration.

4. Self Test: Initiate the self test via the Power Chute software and report back success / failure.

Cheers! 👍