I'm new to TFP, however, have been reading many posts regarding problems with Autpilot DIG 220 system. In my 4th year my pool service had to replace my Tri-sensor because of bad temperature sensor (per DIG display message). Since it was replaced a little over of week ago, seems to be little to no chlorine being generated. Chemistry is "ideal" per multiple tests performed by pool service company, except Cl which was 0.25 ppm. I have loosened the union on the SC-48 cell on the discharge side, sampled the water and virtually no Cl measured on test strips (two different varieties).
DIG 220 control unit indicates normal operation and cell reading is 28V/4.9A. I've checked the installer menu to ensure proper settings. Pool service was out today and checked fuses which were okay, however, they took a voltage measurement at the black and red terminals on the board which feed the cell and claim it was zero. When the cell cord is disconnected, I do get a message on the display (low cell amps). Called Autopilot and they seem to think the cell has voltage, but the pool guy doesn't think so and suspects a control unit problem. This issue seems very coincidental with the tri-sensor replacement. Thoughts?