Hey there, sorry to hear you’re having trouble with your Siemens HTRI-S system. When dealing with malfunctions, the first step is usually to check the power supply and connections to ensure everything is properly connected and receiving power. If that checks out, I’d recommend reviewing the system’s logs or error messages to pinpoint any specific issues reported. If you’re still stuck, contacting Siemens technical support or referring to the system’s manual for troubleshooting steps tailored to your specific problem could be beneficial. Good luck!