A. Excessive leakage or a faulty compressor can cause a dehydrator to run constantly. A dehydrator will operate continually when it is not capable of supplying the airflow demanded by the pressurization system. Leakage in the transmission line or connections can be large enough to cause excessive operation. Check the polytubing and all transmission line connections for leakage. Use a commercial leak detector or soapy water on joints.
Bubbles indicate leaks.
A dehydrator compressor that is worn beyond its useful life also can force the unit to run constantly. The problem is most likely with the compressor where the pressure output has dropped. Alternatively, there may be a blockage in the brass fitting positioned below the bowl. Remove the filter bowl and clean the orifice at the base, check for small air flow if none test the compressor. The compressor may need to be rebuilt.