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Buderus 2107 BLR SENSOR ERROR
Hello All, I have searched and couldn't find any posts regarding this. I have a 10 year old Lagano G115 oil fired burner with 2107 Logamatic control. I checked the system today (which is producing heat fine) and noticed the BLR SENSOR ERROR message and no boiler temp showing on the display. I read the book and it said to check the connections and replace the sensor if necessary. I cannot however find documentation that shows me where this sensor is and where to purchase a new one. I don't want to call in a tech as I can replace pretty much anything. Can someone point me in the direction as to where to buy this and how to check it? Also, what is the harm in the system running without that sensor talking to the Logamatic? Is it just not efficient?
Thank you all so much,