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lozanoleeSep 9, 2025
What does 'Shorted RTS' mean on my OutBack Power FLEXmax 100 Controller?
- EEdward ParkerSep 9, 2025
A 'Shorted RTS' message indicates that the Remote Temperature Sensor (RTS) is damaged. To test, remove or replace the RTS.
What does 'Shorted RTS' mean on my OutBack Power FLEXmax 100 Controller?
A 'Shorted RTS' message indicates that the Remote Temperature Sensor (RTS) is damaged. To test, remove or replace the RTS.
What to do if OutBack Power Controller unit does not power up upon initial connection?
If your OutBack Power Controller unit doesn't power up, check the battery connection and polarity, ensuring it's properly connected. Also, inspect the battery circuit breaker or device to ensure it's appropriately sized. Confirm the battery voltage at the FLEXmax 100 terminals, as a voltage below 15 Vdc may prevent power-up. If a rapid shutdown device caused this, reset the external rapid shutdown device.
What does it mean when my OutBack Power Controller displays 'VOC Too High'?
If the open-circuit voltage (Voc) is too high, the FLEXmax 100 cannot safely operate. The controller will automatically restart operation once the Voc decreases to a safe level. You should also check the controller temperature.
What to do if my OutBack Power FLEXmax 100 is in over current fault?
An over current fault occurs if more than 80 amps flow from the battery to the FLEXmax 100, or if more than 120 amps flow from the controller to the battery. To restart the FLEXmax 100, remove all power from the controller and then reconnect the batteries.
What to do if my OutBack Power Controller shows a GFDI Fault?
A GFDI Fault indicates a ground fault where the detection circuit has sensed an open connection on the GFDI fuse. Check the fuse and make certain it is installed according to the instructions.
Where should FN100-00.bin file be located on microSD card for OutBack Power Controller?
Ensure the FN100-00.bin file is located in the root directory of the microSD card.
What to do if STATUS LED indicator flashes rapid green, but does not flash slowly within a few seconds on OutBack Power FLEXmax 100 Controller?
If the STATUS LED indicator flashes rapid green, but does not flash slowly within a few seconds, there may be a problem with the microSD card or a file on it. Disconnect the battery and try connecting it up to six more times.
What to do if STATUS LED indicator does not flash, but startup LED indicator sequence runs when pressing RESET button while connecting battery to OutBack Power Controller?
If the STATUS LED indicator does not flash, but the startup LED indicator sequence runs when pressing the RESET button while connecting the battery, the button may not be fully pressed when powering up. Ensure the button is fully pressed when powering up.
What does it mean if my OutBack Power FLEXmax 100 Controller displays 'Over Temperature'?
An 'Over Temperature' message indicates a high temperature fault. Check the controller temperature (see page 38).
What to do if my OutBack Power Controller displays 'Fault Input Active'?
A 'Fault Input Active' message indicates a deliberate action due to a rapid shutdown condition, which is not a controller error. Resetting this condition requires resetting the external rapid shutdown device.
General| Maximum PV Input Voltage | 150 VDC |
|---|---|
| Maximum Charge Current | 100 A |
| Maximum Output Current | 100 A |
| Efficiency | 98% |
| Operating Temperature | -40°C to +60°C |
| Battery Voltage | 12 VDC |
| Communication | RS-232 |
| Protection | Overvoltage, Overcurrent, Short Circuit, Reverse Polarity |
Covers essential safety precautions for operating the equipment.
Provides instructions and requirements for connecting the charge controller to the system.
Explains grounding requirements and methods for system safety.
Describes the internal GFDI circuit and its function for fault protection.
Specifies correct wire gauges and cable ampacities for system connections.
Outlines the step-by-step procedure for powering on the charge controller.
Explains how to restore the controller to its original factory settings.
Details fault conditions, error messages, and troubleshooting steps.
Presents the menu hierarchy for configuring settings via the MATE3S display.
