Discussion Starter · #1 ·
Last week we replaced the compressor fan motor on our 5 year old Amana system. We discovered that one night the fan stopped running and would not kick back on, no matter how much time we killed the power to the unit. I have a friend of a friend who is a licensed HVAC technician who came out and installed the new motor. I assisted in this process and it was pretty cut and dry. Then we discovered that the contact was bad. It made a crazy buzzing noise when the thermostat was calling up the outside unit to kick on. We replaced the contact, and it seemed to run fine yesterday. After leaving the house for about 2.5 - 3 hours, we came home to see that the fan was not turning, but that the compressor was on, on the unit. Basically sounded the same, but without the fan going. I killed the power and went out to investigate. The shell of the unit was very hot. After pulling the outdoor disconnect switch, I removed the panel to the unit and per the technician's instructions, I swapped a couple of wires on the contact. I also checked the copper lines to make sure they were the right temperature, and they were. I powered everything back on, and the fan began blowing again. I checked it every 45 min and it seemed okay. The house was getting cold air. After the 2 hour mark I checked the unit, and the fan was stopped again. This time the outer casing of the unit was not as hot. Now we are at a standstill. I am getting information that the pressure switch may be bad, and that the compressor may be going out. To tell you the truth I am not 100% in agreement with that notion. The fan motor is the only thing that stops working every two hours. The compressor stays running. I am thinking that we may have ended up with a bad motor. The new one is a Gemtech GTC33-MSP3 Lower RPM Multi HP motor. The old one was a 1/4HP 830 RPM 208-230v GE motor. I am scratching my head at this point. The tech checked all the connection with a volt meter and it all was correct. Anyone know what we are looking at as a possibility of what's wrong? I'm gonna get a second technician out, but would rather have some information going into this, so as to not be flying blind. Thanks all!