My Quad XPro is displaying an LLL error. What does this mean?
If your probe was exposed to temperatures above or below its temperature range (-58 to 572°F / -50 to 300°C), you will see an LLL or HHH error. LLL means that the probe was exposed to temperatures below its range and HHH means that it was exposed to temperatures above its range. If the probe is not fully inserted into the socket, LLL or HHH may also appear, please remove the probe, and then re-insert the probe fully. Another reason may be that the probe or socket is damaged, if the problem still exists after re-inserting, please contact our customer service to get help.