Hello, I have RLU 236 controller, and i want to control AC split unit via it, i am wondering if that is possible to control the speed of the evaporators fan (high, medium, low) depending on the temperature difference (between the setpoint and the temperature sensor), i.e. when the temperature difference is high, the high speed is on, and when the temperature difference decreases, the medium speed is on. not as in step, i dont want 2 or 3 speeds operate at the same time, it will burn the motor

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Split from RLU222 / 236 + OCI700.1 : free application program.

I have no ideas, but two things:

- create another thread for different topic

- I've found very useful the interface and the software on pc, you can view more variables as same time and adjust regulation parameter on the fly

btw: RLU236, same as other controller have a step regulator, if you want to lock lower speed when is selected higher one you can simply do a interlock with relays:the higher one stop the lowers ....

Regards