Question

frost on the outdoor coil
○ indicates a low refrigerant charge
○ indicates a high refrigerant charge
○ indicates a problem with the condensate system
○ is a normal operating condition
○ should be melted with hot water

Explanation:

Frost on outdoor coil often points to condensate - related issues like poor drainage or improper ventilation, rather than refrigerant charge levels or being a normal condition. Using hot water to melt it is not a proper fix for the root - cause.

Answer:

indicates a problem with the condensate system