> For the complete documentation index, see [llms.txt](https://docs.revrobotics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.revrobotics.com/docs/ion/help-and-how-to/troubleshooting.md).

# Troubleshooting

## ION Control System

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><strong>Power Distribution Hub</strong><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/TWY7nRR4LUhBWQwHfIjL">PDH Troubleshooting</a><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/TWY7nRR4LUhBWQwHfIjL#breakers-are-difficult-to-extract">Breakers are difficult to extract</a><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/6MjbY3j5neWHqwJb9nRo">PDH Status LED Patterns</a></td><td><a href="/files/nXgUo7H9BrZo0ebBKMz6">/files/nXgUo7H9BrZo0ebBKMz6</a></td></tr><tr><td><strong>Pneumatic Hub</strong><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/88qbu1Y4RKut3FG0WPey">PH Troubleshooting</a><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/88qbu1Y4RKut3FG0WPey#compressor-test-mode">Compressor Test Mode</a><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/yXVGQFD5439sN0qpevrW">PH Status LED Patterns</a></td><td><a href="/files/7Pe8Rcnoo90etpaXBkts">/files/7Pe8Rcnoo90etpaXBkts</a></td></tr><tr><td><strong>Other Control System</strong><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/RWHdloi5nD1qt7GTzyys">Mini Power Module Status LED Patterns</a><br><br><a href="/spaces/-ME3KPEhFI6-MDoP9nZD/pages/0tZ10ujMC43vDV39mRdB">Servo Hub Troubleshooting</a><br><br><a href="/spaces/hYImTnzBVrovYdNTo9N8/pages/nzBEwh7SykC6LjENNT4a">RPM Compatibility with the new FRC Radio</a></td><td><a href="/files/atE7CCLZzVtBWU2MM8w8">/files/atE7CCLZzVtBWU2MM8w8</a></td></tr></tbody></table>

## ION Brushless

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><strong>SPARK Flex</strong><br><br><a href="/spaces/e0CWwhMSoCEH7NLVoLhF/pages/6pw0bcmqRhSX8KOcyPqC">SPARK Flex Troubleshooting</a><br><br><a href="/spaces/e0CWwhMSoCEH7NLVoLhF/pages/sZFxu4whKCZoqDTgiYMB">SPARK Flex Status LED Patterns</a><br><br><a href="/spaces/-MGEfA6CxjaSQiH5kHxn/pages/TGvFNRuzeue36SFYXs2g">SPARK Flex with the REV Hardware Client</a></td><td><a href="/files/y74cG8soTrXWNlV7RLYc">/files/y74cG8soTrXWNlV7RLYc</a></td></tr><tr><td><strong>SPARK MAX</strong><br><br><a href="/spaces/e0CWwhMSoCEH7NLVoLhF/pages/-M7iHBrR_2qAwXVVR7N2">SPARK MAX Troubleshooting</a><br><br><a href="/spaces/e0CWwhMSoCEH7NLVoLhF/pages/-M7nZ_oZX6sNk5xNl_pj">SPARK MAX Status LED Patterns</a><br><br><a href="/spaces/-MGEfA6CxjaSQiH5kHxn/pages/cMgwCx1OMB9d2Ig5JBnP">SPARK MAX with the REV Hardware Client</a></td><td><a href="/files/jH5Sj6raApr8IN3ZYeQV">/files/jH5Sj6raApr8IN3ZYeQV</a></td></tr></tbody></table>