0
A contactor not being energized or closed can be caused by a host of reasons . A shorted or open contactor coil. No control voltage or incorrect voltage present to energize the contactor coil , A safety device opening or breaking the control circuit . A loose or broken control devise or control wire . and possibly more , depending on your a/c units control wiring configuration. Tom H, HVAC proffesional. New Orleans .
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is Definition of magnetic contactor?
conclusion
Why does an ac contactor need shading rings?
In a AC contactor, a shaded ring is essential to prevent it from buzzing twice a cycle. Ac contactor takes a input of alternating voltage resulting an alternating current and flux through its windings. So The contactor buzzes each time the magnitude of alternating magnetic field reaches zero. The shaded rings are provided at some part of the core. When the alternating flux cuts them the produce another alternating magnetic field which is out of phase from the main magnetic field. So the resultant magnetic field no more zero at the contacts and which prevents the contact from buzzing.
What is the Conclusion of air compressor?
The conclusion of and air compressor is a supply of air. The air compressor generates air that is stored in a tank.
How do you check the pressure of a fridge compressor?
Checking the pressure of a fridge compressor is easy. Remove the compressor and give it a shake. After taking the compressor off it should make a sound while shaking that means itÕs still good if the compressor makes no sound that means it has went bad.
A compressor that has a piston that travels back and forth in a cylinder is a?
It is simply a piston compressor.
If you have a bad compressor does that mean you need a new contactor?
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.
In an air to air system the compressor contactor controls the operation of the compressor motor and the?
Ask your teacher. This is a no brainer...
Coleman air conditioning thermostat will not turn off?
Stuck compressor contactor.
What is a contactor coil?
a contactor is generally looks like a small box connected to an electric circuit. it is what controls electricity flow to a motor. in the middle is normally a way to push in the contactor to manually check to see if either the motor works or if you have electricity.
What is the purpose of a timer wired into the compressor contactor control circuit on a refrigeration system?
A defrost control typically.
Can Power going off and on damage air conditioner?
Yes. Can blow capacitor, contactor or ground compressor.
Why does the air conditioner not shut off but the blower motor does?
compressor contactor is bad. probably stuck in the closed position.
Why would the compressor be on when the inside temperature is lower than the thermostat setting?
Your contactor in the outdoor unit is stuck closed.
What is a contactor for a Central Air Unit?
The relay actuated by the thermostat which starts and stops the compressor and condenser fan in the outdoor unit.
Why does the air conditioning compressor keep operating long after the system is turned off?
The contactor on the outdoor unit is probably stuck. Disconnect the power to the indoor unit, then disconnect the power to the outdoor unit and take a look at the contactor.
Why would an air conditioner continue to run when the thermostat is completely off?
It could be you have a stuck fan relay, a contactor that is sticking, or your thermostat is 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-
