What causes the compressor clutch to cycle?
If the evaporator core gets too cold, the pressure of the refrigerant in the sensing bulb drops. That allows the contacts in the cycling clutch switch to open, which releases the compressor clutch and stops the compressor. As soon as the compressor stops turning, the pressures in the system begin to equalize.
Why does my compressor keep cycling on and off?
Your air conditioner may be short cycling because it is repeatedly starting up then overheating (and shutting down) due to a bad compressor, dirty filters, dirty coils, low refrigerant, or frozen coils. A malfunctioning compressor will overheat. Dirty filters will prevent adequate airflow and cause motors to overheat.
What is a clutch cycling pressure switch?
The clutch cycling switch is a type of device called a transducer, which changes internal resistance in response to changes in pressure. The clutch cycling switch measures the low side A/C pressure near the evaporator outlet and is often mounted on the accumulator.
How do I know if my low-pressure switch is bad?
Symptoms of a Bad or Failing AC Pressure Switch
- AC system cutting on and off rapidly. Repeatedly cycling on and off is part of the normal operation of an AC system.
- Unable to cool the car.
- Compressor not coming on.
Where is the clutch cycling switch on a compressor?
The clutch cycling switch is a type of device called a transducer, which changes internal resistance in response to changes in pressure. The clutch cycling switch measures the low side A/C pressure near the evaporator outlet and is often mounted on the accumulator. Step 1: Locate the compressor clutch cycling switch.
When to replace the AC clutch cycling switch?
If your AC is not blowing air as cool as usual or is not working at all, you may need to replace your AC clutch cycling switch. The AC clutch cycling switch is a very important component to a modern vehicle’s AC system.
What are the symptoms of a bad clutch cycling switch?
Symptoms of a Bad or Failing AC Clutch Cycling Switch 1 Lack of cooling If you begin to notice that the AC system is not blowing as cold as it used to, then that may be a… 2 No cooling at all More
What happens if the clutch on the AC fails?
No cooling at all In more severe cases, where the switch has completely failed, your AC system will completely cease to blow cold air. Without the cycling switch to activate the compressor’s clutch, the AC system will not be pressurized correctly, and the system will be unable to produce any cold air as a result.