4 Signs That Your AC Pressure Switch Is Faulty (High or Low)

 

Your AC system may not function properly if your pressure switch for the AC is broken. Here is how to identify a malfunctioning AC pressure switch.

You want to be sure that your car's air conditioning will function properly while it's hot outside. However, it can be challenging to cool off if the AC pressure switch is defective.

If your AC is suddenly going on and off, failing to cool the cabin, or not turning on the compressor, you could search online for garages in Reading and schedule an appointment with a mechanic to replace your AC pressure switch. The opposite of what you want given how hot it is right now and have a non-working AC system in your vehicle.

We examine the signs of a damaged AC pressure switch and direct you to its location.

It is simpler to diagnose some of these symptoms than others. A few AC system fault codes are also available, and these may point you in the right path. By searching vehicle service near me garages and making an appointment, it is often advisable to leave the investigation and repairs to the experts.

Let's start by looking at the most typical symptoms.

A broken AC pressure switch's most typical symptom is a car's air conditioning system not working. It's possible that the vents are just venting warm air.

Let's look at a more thorough list of the most typical signs of a faulty AC pressure switch:

1.      Irregular AC - This is a symptom of several different AC systems. You could observe that the system briefly cuts off after starting up. You could also only get heated occasionally if it only works infrequently. In either case, it's a good indication that the AC pressure switch is broken if the air conditioner only operates occasionally. You'll have to get the switch changed in order to feel comfortable once more. Find car garages in Reading online that specialise in the AC system, then schedule an appointment for your vehicle.

2.      AC Stops Working - When the air conditioner stops working what could be worse than sporadic air conditioning? What happens if it never works again? The refrigerant pressure switch sensor may be broken if your air conditioner won't turn on. The air conditioning system is made up of numerous parts, thus your issue could be completely different. If you want to discover your car's MOT history, even though a broken AC system is not a reason for a MOT to fail, just carry out an online MOT history checker.

3.      Warm Air Blowing at Cold Temperature - You expect to feel cool air blow when you switch on the air conditioning at a cold temperature. Warm air is blowing in its place. Nevertheless, if the AC pressure switch malfunctions, warm air may be all you get. However, low refrigerant levels are also a cause in this problem and should be checked frequently.

4.      Weird Sounds Coming from The AC System - You'll hear some odd noises if the compressor is turning on and off frequently. The clicking sound will be similar to that made when the compressor regularly turns on, but there won't be any airflow. When you flip the switch, the compressor goes on and off; pay attention for the unique clicking sounds that indicate this.

Function of an AC Pressure Switch

The purpose of the AC pressure switch is to give the system a safety monitor. It is in charge of keeping track of the refrigerant levels on the AC unit's high- and low-pressure sides.

You have two different AC pressure switches on your car for this reason. While the other is assessing the low-pressure elements, one is keeping an eye on the high-pressure side.

The pressure will never fall too low thanks to the low-pressure switch. When there is a leak, this issue arises. Without the proper pressure, the AC compressor can sustain serious damage from pumping out refrigerant, which will increase the expense of repairs.

The high-pressure AC switch keeps track of any systemic obstructions that could increase pressure. There may be an eruption in the system if the pressure rises too much. In order to prevent further pressure build-up, the switch instructs the system to turn off electricity to the air conditioning.

Where is the AC Pressure Switch?

On either side of the air conditioner are the pressure switches for the AC. One switch is located on the high side, and the other is located on the low side.

The high-pressure side switch is located after the AC compressor, whereas the low-pressure side switch is located before it.

While some manufacturers place their AC pressure switches somewhere else, the majority are located in the engine compartment. You may find the right spot for your model by consulting the service handbook for your vehicle.