I am working on this Labnet gradient Thermal cylcer (Multigene optimax) and facing some problem, as when I set a reaction, start it, after some time (mostly after denaturation or in the cycles) the process stops, with error notification, saying "temperature 20c above" or something like that. I have to switch the machine off and then restart, even then there is chance of error, and it is badly affecting my optimization. could someone guide me please? thanking you all.