Benz1978

Ac compressor replaced, drier, condenser, new, Ac compressor is not turning on, vacuum out and added Freon, system will not take more, Ac compressor not kicking on, scanned code came on as 91EB15 actuation of the refrigerant compressor has a malfunction, there’s a short circuit to positive or an open circuit, along with 919100,low refrigerant level A10D00, the power supply is low

all codes erase except for 91EB15 Come on,
and ac light blinks when pushing ac button on.

any help and suggestions would be greatly appreciated.

juanmor40

Which compressor did you get as a replacement?

the electronic control valve is shorted, or it is the wrong valve? Need the compressor model to check

MudFoots

Sounds like you either have a blockage in the new condenser or the expansion valve is no good. Check temperatures across each component to see where the hot spot is. The temps across the condensor should not be much. I would bet it's the expansion valve not opening up enough. I don't remember what the temperature across that valve should but it should be significant.

juanmor40

Please post a photo of the front of the compressor

The error code is electric, nothing about AC refrigerant flow.

Very common getting a new wrong compressor. If the compressor is not original, and the parts is missing the diode, it will NEVER work until hacked, or use the correct compressor. Post pictures of original and new compressor, and I can tell you. Please include electronic valve too in the photo
​

Aviate1

Hi Benz1978,
can you tell me how this was corrected?
I am experiencing the exact same issues.

Thanks

Aviate1

Juanmor40,
What's the hack ? Do you know where the diode would be installed and the value? I did received a new clutchless comp and had concerns about the controller having an Canbus issue.
Original unit was the clutch type, currently I have the clutch signal wire open- I thought of putting 5-7 ohm resistor in place to simulate the coil.
Any help truly appreciated!
thank you

juanmor40

If you have not solved your problem yet, please post snapshots of the compressor labels for both compressors: old and new, and I can take a look.

MudFoots

Mine was a bad clutch. Replaced the unit and it works great now!