Originally Posted by
Bang Guy
The better controllers are more reliable and cost more. The worth is up to you.
Set the controller at the temperature you would like to maintain and then set the heaters slightly higher. This will allow the controller (with the better electronics) to turn the heaters on and off. If the controller happens to malfunction then the heaters will use their internal controller to turn themselves off.
ie. Set the controller for 82F and set the heaters for 84F. Since the controller will turn the heaters off at 82F that's the temperature that will be maintained. If the controller fails then the temp will climb to 84F. If you see the temperature at 84F then check your controller.
The same (and opposite) applies for a chiller.
Thanks, does anyone know of any controllers that do duel heaters? I am going to need 2 so I was hoping for a single controller!!