Reasons Why HVAC Compressors Bog Down
Heating, ventilation, and air conditioner compressors (HVAC) do fail once and a while; and wear and tear or abuse are the main reasons. Sometimes other reasons may become the cause why the compressors get busted. However, these are not common unless the system has been totally abused.
Abuse can come from extended running with the incorrect freon charge or improper service. Improper service can be any thing that may happen to your system as a result of poor skills of the repair man that may include overcharging, undercharging, installing the wrong starter capacitor, removing the thermal limiter, low oil, mixing of incompatible oil types or wrong oil, Embraco compressors installation when the system has experienced a burnout, and other issues that have not been diagnosed. The compressor may fail in a small number of instances including fail open, fail shorted, bearing failure, piston failure, and valve failure. When a compressor does not open the wire breaks. The compressor can no longer be serviced and up for a replacement. If the system remains intact, the problem can easily be solved with the installation of a new compressor.
A failed open compressor can easily be tested. First you need to pry open the electrical cover, then remove the wires and finally get rid of the thermal filter. You now can start testing the terminals with the use of an ohmmeter. Don't forget that you need to test all three terminals of the compressor.
There is a possibility that a broken wire has moved and then contacted the case. This is an unusual case but possible often leading the breaker to trip and then cause a misdiagnosis of failed short. You need to be careful at this point as you need to thoroughly test the lines before proceeding.
Each time a short happens the torque goes down. It is possible that the compressor shudders and the shudder may shake the winding separating the short. It is possible that when the compressor fails short the wires have been frayed or have burned. There is a part of the motor winding that a wire should not be contacting. An inside heating and burning occur in the compressor with this type of short. Another reason for a failed short is bad bearing. The rotor fails when it start to wobble and gets in contact with the stator causing can insulation damage.
Often it may not be a hard short as it may come intermittent. That is why you need to get some help from www.hvacbrain.com to figure out what happened with the help of an experienced repairman. Just don't do anything on your system as it may only make matters worse. Good thing you can always find professionals on the internet that can easily fix the problem with your system.
Abuse can come from extended running with the incorrect freon charge or improper service. Improper service can be any thing that may happen to your system as a result of poor skills of the repair man that may include overcharging, undercharging, installing the wrong starter capacitor, removing the thermal limiter, low oil, mixing of incompatible oil types or wrong oil, Embraco compressors installation when the system has experienced a burnout, and other issues that have not been diagnosed. The compressor may fail in a small number of instances including fail open, fail shorted, bearing failure, piston failure, and valve failure. When a compressor does not open the wire breaks. The compressor can no longer be serviced and up for a replacement. If the system remains intact, the problem can easily be solved with the installation of a new compressor.
A failed open compressor can easily be tested. First you need to pry open the electrical cover, then remove the wires and finally get rid of the thermal filter. You now can start testing the terminals with the use of an ohmmeter. Don't forget that you need to test all three terminals of the compressor.
There is a possibility that a broken wire has moved and then contacted the case. This is an unusual case but possible often leading the breaker to trip and then cause a misdiagnosis of failed short. You need to be careful at this point as you need to thoroughly test the lines before proceeding.
Each time a short happens the torque goes down. It is possible that the compressor shudders and the shudder may shake the winding separating the short. It is possible that when the compressor fails short the wires have been frayed or have burned. There is a part of the motor winding that a wire should not be contacting. An inside heating and burning occur in the compressor with this type of short. Another reason for a failed short is bad bearing. The rotor fails when it start to wobble and gets in contact with the stator causing can insulation damage.
Often it may not be a hard short as it may come intermittent. That is why you need to get some help from www.hvacbrain.com to figure out what happened with the help of an experienced repairman. Just don't do anything on your system as it may only make matters worse. Good thing you can always find professionals on the internet that can easily fix the problem with your system.