I've been having ongoing issues with my Aquapure PLC1400. I started getting error code 123 about 3 months ago. The salt cell was a few years old at that point so I purchased another even though the old unit looked in fair shape visually. I did not change the power cable to the salt cell since it looked in fine shape and was only about 2 years old. The problem initially seemed to be resoled but the service light came back on with error code 123. I tested the voltage and it was around 38 volts (going off memory) but after checking I saw the service light was not on anymore. I monitored it for a couple weeks and did another voltage check when the service light was on. Sure enough it was showing about 1 volt. At this point I thought the issue was a failing relay on the power control board. I ordered a replacement. I swapped out the control board and looking at the relay there was signs of failure on one of the switched legs. The new board seemed to work, I decided to switch back to my older cell while I acid washed the newer one. Once again the error code came back. Since throwing money at the problem hadn't worked yet I went ahead and bought a new power cable that I installed when replacing the older salt cell with the cleaned new cell. Once again the error came back. The system is producing chlorine but not as much as it should. All the cells I have had in there get the usual calcium build up over time so currant must be flowing at least part of the time. Right now the only remaining parts are the transformer and the display control board. I've never heard of an intermittent problem with these transformers so I am hesitant to replace this without a more thorough diagnosis. Has anyone else run across an intermittent 123 code like this? I'll test the transformer voltage when I have a chance but I'd appreciate any help possible. Thanks in advance.
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