The Santech Industries MT1400 Compressor Electronic Control Valve Tester can test electronic control valves in variable displacement compressors. The tester can be placed in-line between the compressor control valve and wiring harness connector, so control valve issues can be diagnosed before condemning the compressor. The electronic control valve regulates internal compressor pressure to change compressor displacement. The tester regulates the input signal to the control valve to verify the valve operation. A compressor with a low-pressure differential may simply have a defective or dirty electronic control valve or not be receiving the proper voltage signal to the control valve.
