ya you guys are right. im gonna talk to spyder robotics and see what they can do for me.

so for now i took a good probe from another herpstat ND and switched it with the bad one. i then put the bad one in the other herpstat just for fun and it worked perfectly for a good 10 mins until i heard the alarm again but this time "ERROR#3" was displayed on the screen. the manual says that this error is an incorrect probe reading so after much experimentation i figure that the probe is definitely bad...

better the probe then the thermostat.

thanks guys!