Certainly! When troubleshooting the Honeywell HPF-PS6E, start by checking the power supply unit. Ensure it’s receiving proper voltage and that all connections are secure. Additionally, inspect the wiring for any signs of damage or loose connections. If the power supply unit seems fine, try resetting the panel by powering it down, waiting a few minutes, and then powering it back up. If the issue persists, consult the user manual for further troubleshooting steps or consider contacting a certified technician for assistance.