1. Turn the temperature control valve clockwise to the maximum, it should be above the fifth gear, and the water flow will be greater in the gear.
2. If the weather is not hot, it is likely that there is a problem with your water intake. I suggest you consult a hydraulic engineer to see the specific situation.
3. The temperature sensor is uniform when the liquid expands, and its control function is proportional adjustment. Inside the sensor, the temperature-sensitive liquid expands or contracts in volume.