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Chloromatic Code 120 121


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I have a chloromatic III cm601 that has the codes 120 or 121 depending on when I look.

The temp is good, the flow is on, and the salinity looks good as well. I also have cleaned the cell.

Any ideas where to go from here before spending money to replace the cell. Is it a sensor or board.

All advice welcomed

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I just replaced mine 5-days ago. Had the same codes. Mine was 6 years old too. Put the new cell in, and they were finally gone. My cell didn't look bad either. I cleaned it and everything. But it was still throwing the codes and not producing chlorine. The new cell cost me $369.

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I just replaced mine 5-days ago. Had the same codes. Mine was 6 years old too. Put the new cell in, and they were finally gone. My cell didn't look bad either. I cleaned it and everything. But it was still throwing the codes and not producing chlorine. The new cell cost me $369.

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I am having the same problem. Pool Clown helped me before so I am looking for help again. I have a Jandy Aquapure 1400 that is 6years old. It has the code 121 showing. We have cleaned the cell. How do we test it at the cell with the 3 posts. Is the middle neutral and the outside 2 for the positive? If we need a new cell, any recommendations. The service service light is not always on.

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I just replaced mine 5-days ago. Had the same codes. Mine was 6 years old too. Put the new cell in, and they were finally gone. My cell didn't look bad either. I cleaned it and everything. But it was still throwing the codes and not producing chlorine. The new cell cost me $369.

Daanbc, could you please post where you got the cell? That is a very good price. This would be a great resource here on the forum as these cells are no longer produced and the advertised replacement is pricey.

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I just replaced mine 5-days ago. Had the same codes. Mine was 6 years old too. Put the new cell in, and they were finally gone. My cell didn't look bad either. I cleaned it and everything. But it was still throwing the codes and not producing chlorine. The new cell cost me $369.

Daanbc, could you please post where you got the cell? That is a very good price. This would be a great resource here on the forum as these cells are no longer produced and the advertised replacement is pricey.

Sure, I replaced my old chlorinator cell with the new jandy. You cannot get the old "square types" anymore. I tried. The one I did find wanted $500! I purchased mine from "POOL SupplyWorld" on the web- Jandy Aquapure PLC700 PureLink 7-Blade Cell Kit - Up To 15,000 Gallons

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Price: $369.95

Model Number: JDY-PLC700

Manufacturer: Jandy

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