I was called to a home to inspect a home air conditioning system that was not cooling. Upon arrival, I found that the system was not cooling due to a defective contactor. The contactor was not able to pull in fully, and the relay on the defrost board was trying to engage but was not getting the necessary voltage. I also noticed that the suction line pressure was dropping when the system kicked on, which could indicate a defective txv. I provided the customer with an estimate for a new contactor, new txv, and new defrost board. The customer decided to talk it over with his wife before making a decision.
