AC contactors are the devices that regulate the electricity flow throughout your unit. They work with the condenser and compression unit of your Ac and form the electrical power unit.
As soon as the unit is turned on, a low voltage signal of 24v reaches it and creates a magnetic field. The field closes the circuit like a bridge and facilitates the flow of higher voltage connections.
There are two types of conductor- one with a single-pole containing a single magnetic coil and one with a double pole having two coils to make the circuit connections. Here is a list of various types of contractors-
- 1 pole contactor 25 amps 24V
- 2 pole contactor 25 amps 24 V coil2 pole contactor 30 amps 24V coil
- 3 pole contactor 30 amps 24v coil
What are the signs of a failing contractor?
Whenever a contractor is damaged, it will show some physical signs or mechanical failures. The most common signs are-
Deterioration- Expected
A material naturally deteriorates with usage and time. This sign will be noticeable to the naked eye.
Physical Deterioration- Unexpected
The contractor may undergo damage due to extreme temperature. This can happen at any time and cannot be predicted.
Running 24/7
The continuous running of ACs can also result in a power outbreak when the unit is shut off.
Clicking
It is an electric issue related to a compressor, thermostat, or capacitor.
Grinding
It is a type of noise that comes out of the machine when the motor bearing has worn out and needs replacement.
Rattling
This sound is essential to be heard when the unit is on. If you don’t hear it, there might be some problem of a loose fan or obstruction is blocking the way.