Outdoor condenser 7 was off at disconnect. Staff reported lineset on outdoor unit 7 freezing up. Not outdoor coil. Restored power and found high pressure switch tripped in heating mode very quickly. Switched to cooling mode and lineset started freezing up. Tech went in search of AHU 7 to confirm blower operation. Attic access in the middle section of back hallway is for AHU 7. Tech confirmed seized up 3/4 hp 1075 rpm blower motor. Tech recommends replacing 19 year old R22 split system over repairing due to cost of blower replacement, age, and EPA phase out of R22. Let Jeff Cupp know of findings. Need to provide repair vs replacement estimates. Let Gina know.