What does EC mean on Mercedes?
EC button on your ac and heating control is to bring outside air only into your car. when that mode is selected, a/c will not come on. You must use other buttons along with lowering the temprature setting selector for the a/c to kick in. 12 people found this helpful.
Why does my a / C CLUTCH not spin when I Turn on the AC?
The center part on the pulley of the A/C compressor will not spin when you have the air conditioner off or if there is a problem. Once you turn on the AC the center part of the compressor, the AC clutch should engage and start to rotate with the pulley.
Why does the EC button not turn on?
“If you have a control unit where the EC button remains illuminated you most likely have a stored DTC code or a version coding error for refrigerant level sensor. In order for the compressor to be turned on DTC codes need to be cleared and the coding needs to be corrected.”
Why is my a / C compressor not working on my Mercedes?
One other reason why the A/C compressor does not engage is the fact that the system may be low on R134 refrigerant. Typically older cars may have very slow leaks that may require top off with refrigerant every couple of years. You can use a R134a recharge kit to recharge your system if the A/C compressor is not working.
When to disengage the a / C clutch on a Mercedes?
Purpose of the A/C Compressor Clutch. If no problems are detected such as low refrigerant in the system, it sends a signal to disengage the A/C compressor clutch. Otherwise the A/C compressor engages and starts to compresses the refrigerant. By compressing the refrigerant we add pressure to the system.
Why is my Mercedes-Benz C230 AC not working?
Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My A/C Working? What are common reasons my Mercedes-Benz C230 has air conditioning problems?
The center part on the pulley of the A/C compressor will not spin when you have the air conditioner off or if there is a problem. Once you turn on the AC the center part of the compressor, the AC clutch should engage and start to rotate with the pulley.
How can I tell if my Mercedes Benz air conditioner is working?
Since cars like the Mercedez Benz are designed to have the radiator cooling fan kick in when the A/C is on, make sure to check if the cooling fans on the radiator are working when the air conditioning is turned on. Identifying the location of your compressor is another way to check if the clutch is engaging on the compressor.
How to troubleshoot a / C compressor clutch problems on your Mercedes?
This video is helpful if you are trying to troubleshoot air conditioner problems, the A/C compressor clutch in particular. This opens in a new window. Start by turning the engine on. Set the AC to maximum cold setting. Open the hood and look at the serpentine belt to locate the AC compressor.