Pool Pilot blowing fuses

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AtomicCom

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Oct 16, 2024
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I have a pool pilot Dig-220. The main power fuse in the lower left side of the board blew it fuse. Fuse location is circled in attached pic. Oddly, this happened about a few hours after we just put in a brand new Cell and cable. I checked the cell and connections and everything looked fine. I replaced the fuse and it ran for a few seconds and then blew again. Anyone have this happen and any areas to troubleshoot.
 

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Do you know how to do component level diagnostics and repairs?

Have you looked carefully at the hoard for any burnt components?
 
Ok, so since this issue started when I put the new cell in I went ahead and put the old cell and old cable back on and now it doesn't blow the fuse but now it says "Purifier Off; Pwr Control Error"

I tried searching for power control error and didn't find much..
 

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Maybe the new cell is defective.

You have a clamp on ammeter to measure the amps the cell is pulling?
 
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8.6A is really too high.

I think your salt level is too high..

Volts & Amps Guide - AutoPilot Website

Please note: • Warmer water and higher salt will decrease voltage. • Colder water, lower salt, scaled, or depleted cell will increase voltage. • It is better to
autopilot.com autopilot.com
 
ajw22 said:
8.6A is really too high.

I think your salt level is too high..

Volts & Amps Guide - AutoPilot Website

Please note: • Warmer water and higher salt will decrease voltage. • Colder water, lower salt, scaled, or depleted cell will increase voltage. • It is better to
autopilot.com autopilot.com
Click to expand...
8.6A is indeed high, which would make sense that it's being replaced. I did want to point out that unlike other SWG, the DIG-220 is overbuilt. As per the manual, you can go 10x the normal levels, so I don't think a salt level test will tell us much.

My vote is the cell is DOA, not the controller, because I believe that fuse is 20A, correct? A new cell shouldn't cause double the current, it should be lower.
What is your cell power setting? Level 3? Reduce it to Level 1 when you replace the cell.

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