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Not always. But if a compressor goes bad it can take out the contactor. I have replaced compressors before and found the contactor is still ok. In a commercial application Copeland will not honor the warranty if the contactor is not replaced at the same time a new compressor is installed. Not sure about residential but for a $15 contactor I would not gamble with it.
What else can I help you with?
Can you by-pass the bad contactor relay on your compressor without causing damage to the unit?
Why would you want to? It is in the system for a reason, namely to turn the compressor on and off according to the schedule set by the thermostat. If you bypass it, you would be forcing the compressor to run when the rest of the system isn't, which sounds like a recipe for disaster.
How do you tell if a 3 phase contactor is bad?
To determine if a 3-phase contactor is bad, you can check for physical signs of damage such as burnt contacts or melted components. Use a multimeter to test continuity across the contact terminals; if there is no continuity when the coil is energized, the contactor may be faulty. Additionally, listen for unusual noises when the contactor operates and check for overheating, which can indicate internal issues. If the contactor fails to engage or disengage properly, it is likely bad and should be replaced.
Why would the copper tubing freeze from the outside air conditioning unit?
Poor Airflow due to a dirty filter,dirty evaporator,dirty blower wheel, bad or weak run capacitor, or even a bad bearing in the fan motor causing it to overheat and shut off on overload while the compressor still runs, thus causing the unit to freeze up. On some systems it is possible that when the thermostat is satisfied and the indoor blower motor shuts off, the compressor could keep running if the contactor is sticking for 1 reason or another. Examples of this would be fireants or ladybugs in contactor or just an old contactor that has burnt points that stick some or all the time after running and getting hot. -Brad75-
How do you test a good and working contactor?
A contactor is tested by using a device called a Multimeter. By setting the multimeter to ohms and rx1 you can clip both prongs to the coil. If the multinmeter moves the contactor is good. If it doesnt move its bad.
Does being good at math but bad at computer programming mean you are bad at science?
no.
Why does the air conditioner not shut off but the blower motor does?
compressor contactor is bad. probably stuck in the closed position.
Air conditioning outside but compressor does not start?
If its just the compressor that's not starting then it could be bad contactor bad capacitor burnt or broken wire bad compressor lower than normal line voltage If you are not comfortable testing or working with electricity then don't attempt this on your own
Goodman model CE30-1HB compressor will not start?
If its just the compressor that's not starting then it could be bad contactor bad capacitor burnt or broken wire bad compressor lower than normal line voltage If you are not comfortable testing or working with electricity then don't attempt this on your own
When the outside fan on a central air unit doesn't come on will the compressor still kick on?
Yes it can. If the fan is not coming on you could have a bad fan motor, a bad capacitor, a loose wire at the contactor, or a loose wire at the capacitor.
Can you by-pass the bad contactor relay on your compressor without causing damage to the unit?
Why would you want to? It is in the system for a reason, namely to turn the compressor on and off according to the schedule set by the thermostat. If you bypass it, you would be forcing the compressor to run when the rest of the system isn't, which sounds like a recipe for disaster.
What are the common signs of a bad AC contactor and how can it be diagnosed and replaced?
Common signs of a bad AC contactor include the air conditioner not turning on or off properly, frequent cycling, or a humming noise. To diagnose a bad contactor, visually inspect it for signs of burning or wear, and use a multimeter to test for continuity. If the contactor is faulty, it can be replaced by disconnecting power, removing the old contactor, installing a new one, and reconnecting the wires.
How do you tell if a 3 phase contactor is bad?
To determine if a 3-phase contactor is bad, you can check for physical signs of damage such as burnt contacts or melted components. Use a multimeter to test continuity across the contact terminals; if there is no continuity when the coil is energized, the contactor may be faulty. Additionally, listen for unusual noises when the contactor operates and check for overheating, which can indicate internal issues. If the contactor fails to engage or disengage properly, it is likely bad and should be replaced.
Manifold gauge fluctuates?
This can be a sign of a bad compressor and you will need to run a compressor check first, this can be done without draining the freon....
Your air blows but not cold and you don't need freon in intrigue 98 Oldsmobile?
1. You have a bad compressor or. 2. You have bad compressor clutch or. 3. You have electrical issues or. 4. You have a bad drier and expansion block.
Why does the ac relay on the compressor clutch keep blowing fuses?
You may have a bad compressor clutch coil, you need to check the coil and work from there................
How do you test a good and working contactor?
A contactor is tested by using a device called a Multimeter. By setting the multimeter to ohms and rx1 you can clip both prongs to the coil. If the multinmeter moves the contactor is good. If it doesnt move its bad.
Why would the copper tubing freeze from the outside air conditioning unit?
Poor Airflow due to a dirty filter,dirty evaporator,dirty blower wheel, bad or weak run capacitor, or even a bad bearing in the fan motor causing it to overheat and shut off on overload while the compressor still runs, thus causing the unit to freeze up. On some systems it is possible that when the thermostat is satisfied and the indoor blower motor shuts off, the compressor could keep running if the contactor is sticking for 1 reason or another. Examples of this would be fireants or ladybugs in contactor or just an old contactor that has burnt points that stick some or all the time after running and getting hot. -Brad75-
