05 Sep Environment temperature sensor error of external unit “F6” (Sendo SFSU 46K)
1. Check if the sensor resistance is normal, otherwise replace it.
2. Check if the sensor cable is short-circuited or open-circuited, and if the fiss is well adjusted, if a connection to the board has been unstuck, and repair accordingly.
3. When steps 1 and 2 are normal, then the components or IC are damaged, and the electronic board needs replacing.