Question 55Refrigeration & AC - QMED

The correct answer is C) cross charged. When the sensing bulb of a thermostatic expansion valve is charged with a fluid different from the charge used in the system, the power element is referred to as "cross charged." This is because the charge in the sensing bulb does not match the charge in the rest of the system, creating a "cross" between the two different charges. The other options are incorrect because "straight charged" refers to the sensing bulb and system using the same charge, "mixed charged" is not a recognized term, and "blended charged" does not accurately describe the mismatch between the sensing bulb and system charges.