I have had the Dig 220 for 2 1/2 years with no problems except re-setting the tri-sensor cord occasinally to clear errors. Now the unit does not cycle on (always off). There are no errors just does not cycle on. Have tried everything, fuses are good, cell and tri-sensor and stainer clean, water chemistry good salt 3,000 ppm, cy 60, ph 7.6, chlorine 2 but have been adding manually since unit not producing. Have checked the programming. The one thing I notice is when I run the test I get 0 volts 5 amps. Any help with this?