: The 24V supply to the controller is too low. Check the power supply unit and wiring for voltage drops.
: Run any available diagnostic tests. Many systems have built-in tests that can help identify the source of the problem. cmmo-st-c5-1-diop error codes
: Displays error codes sequentially (e.g., "E" followed by the code digits). Status LEDs : Normal operation or communication OK. : Fatal error or communication failure. How to Resolve Check Power : The 24V supply to the controller is too low
: Often, numbers like this refer to a specific error or issue within a category. It could also indicate the severity or a sequence of errors. Many systems have built-in tests that can help
to communicate status, warnings, and errors. When an error occurs, the display typically flashes a code composed of a letter and a two-digit number (e.g., "E 01"). RS Components 1. Common Error Categories