An expansion valve with a broken sensing bulb will result in which of the following?

When an expansion valve has a broken sensing bulb, it fails to accurately measure the temperature of the refrigerant in the evaporator. This is crucial because the sensing bulb is responsible for controlling the expansion valve's opening, which in turn regulates the flow of refrigerant. If the sensing bulb is broken, the expansion valve cannot adjust properly, leading to very low suction pressure.

A very low suction pressure results from insufficient refrigerant being allowed through, causing the evaporator to not receive enough refrigerant to absorb heat effectively. Consequently, the suction line may remain dry. The lack of refrigerant flow can prevent the evaporator from cooling properly, further exacerbating the issue by not allowing proper heat exchange. Thus, the condition of having a dry suction line and excessively low suction pressure is characteristic of a malfunctioning expansion valve due to a broken sensing bulb.