Heater Controller

[jandb]

Edit above. My apologies, you are on about controller failure, NOT heater failure. So if your controller was to fail then you'd hope that your heaters would kick in and rescue you. I'm not sure though on this because if your controller fails but yet it's controlling your heaters then your heaters might not operate properly because they're being controlled by a faulty piece of equipment. Hmmm, can anyone else clarify this?

Yep. You got it. If the controller fails you're ok with the top end of the heater.

 

[Chefken]

I see his point....if the controller shorts then no power is sent to heaters and no save. To be redundant and safe the backup needs a seperate power source and set below the thermostat on controller.....then it would only turn on if controller or controller fed heater died.

 

[esoxlucius]

I see his point....if the controller shorts then no power is sent to heaters and no save. To be redundant and safe the backup needs a seperate power source and set below the thermostat on controller.....then it would only turn on if controller or controller fed heater died.

That's my point exactly.

So to be on the safe side you'd need a separate controller to control your controller. But to be absolutely sure you'd need another controller to control the controller that was controlling your controller!!!!! Hahaha, madness, hahaha.

 

[DN328]

The risk is more of heaters staying on. If the controller fails to send power, then no heat. If controller get stuck at 79F, then heater thermostat turns off at 81F. No need for controller for controller for controller. Well you could , but overkill.