Vent fault with compressor

I have a vent valve come up on my lr3 it is intermittent. C1A18-64. I have put a hatchi compressor on. Work fine for a couple of day then comes up the fault. The rear of the vechile goes to full inflation. The vechile will not deflate to lower position. I have change both plugs that lead to the compressor. I have put a new Center valve and front valve. Any idea’s welcome. Only the one error codes comes up.