I removed old condenser. There was no refrigerant in it. Then I installed temp unit. I pressure tested then evacuated system. I had to switch reversing valve to cool in off position. Then I could not get condenser to start. I had no 24 volts. I found splice in chase and broke some wires. I probably pulled on it connecting temp unit. Took awhile to find. I ran temp wire to break. I finally got power and it started. I added 3 lbs R22. It will heat or cool at this time. I collected deposit.