A certain temperature threshold is stored for each level of fan operation, below which the appliance will start its own antifreeze mode. The speed of the incoming air fan is adjusted depending on the maximum and minimum values set based on the falling outdoor temperature. The operating level of the fan can still be changed. When the temperature drops below the second temperature threshold, the supply fan switches off. When the external temperature drops below the -15 ° C limit, the unit shuts down completely. After switching off, when touching the (-) or (+) keys, the LEDs that symbolise the last active operating level of the fan will flash. The fan's operating level cannot be changed and is indicated by a flashing fault LED.
How is the logic of working CA70/CS50 antifrost protection?
