Last week the air condition for our house was not working. The unit
outside of the house was still running, but no air came into rooms
from the vents. I called a company, and it sent a technician the next
day. He opened a large metal box in our garage, and tested the
connections with a gauge, a box with two metal sticks for touching the
connections and a needle in the box moving back and forth behind a
Then he pulled some plugs off a small board, removed the board form
its seating, placed a new one, and put all plugs back to it. Air
started coming in again. He did the whole thing within 10 minutes. We
were charged $230, labor included. I didn't save the old board. He
took it. Today I called the company, and was told that name of the
part was 'relay fan'. But what the technician removed did not look
like a fan.
I don't know air conditioning at all, just like to learn what a relay
fan is, and is it really that expensive?
Thanks for information.