Is my Aquapure 1400 dead?

[ChristopherDB]

Error 120 and 121. Cleaned cell with hose although it wasn't too bad. Lasted another week and now error 120.

37.4v between one prong and the center of cell
37.6v between the other prong and center.
77 mV when measuring the 120 m VDC points on the board.
PIB also properly configured for 1400 cell (jumper not broken).
Cell 2.5 years old in Florida. Is that really all I'm going to get?
Pump runs 24/7, 1100RPM at night then usual schedule during day. Cell 50% in summer, 20% in winter. 16k gallons. 3200 ppm salt w/ k-1766 test.

All signs lead to replacing cell unless I'm missing anything else?

 

[ajw22]

Cell 2.5 years old in Florida. Is that really all I'm going to get?
Pump runs 24/7, 1100RPM at night then usual schedule during day. Cell 50% in summer, 20% in winter. 16k gallons. 3200 ppm salt w/ k-1766 test.

That is about 3500 generating hours/year or about 9,000 hours in 2.5 years.

Cell life is between 6,000 to 10,000 hours.

That is all you get.

 

[generessler]

Cell life is between 6,000 to 10,000 hours.

Fwiw, the docs claim 8000 hours for this particular cell. Excellent diagnostic work by the OP, btw.

 

[ChristopherDB]

Thank you both. I didn't realize these cells had a limited runtime.

Strangely enough, it just started working again, and even when it did have the error it was still producing some chlorine (visible bubbles out of the closet jet to the equipment pad)

I wonder what got it starting to work... The only change we had was water temperature. It was in the 70's and I decided to run the spa at 99 degrees and I woke up the next morning and the error was gone.

 

[JamesW]

Check the voltage and amperage at the same time.

Higher water temperatures will increase the amperage.

 

[JamesW]

Aquapure 1400 121 Error

You can access the cord wires where they connect. You can measure DC amps using an inline or clamp method.

www.troublefreepool.com

 

[JamesW]

Jandy Aquapure PLC1400 End of Life or Can I Make it Last Longer?

The pool did get a little cloudy and smelled a little 'off', but no algae growth. CC was pretty high initially, (can't remember exactly but I think 3-4ppm, when the highest I've ever had before is 0.5ppm) and FC was low at 0.5ppm. You might have gotten some ammonia if bacteria ate the CYA...

www.troublefreepool.com

 

[JamesW]

The amperage looks good.

You should test the voltage under load.

With the cell under full load you should read 22 to 28 volts DC.

I would make two jumpers to go between the spade connectors with a bare spot on the wires to test voltage.

You need some stranded wire, (2) 1/4” female spade connectors and (2) 1/4” male spade connectors.

Disconnect the connection and insert the jumpers.

Connect the meter leads to the bare spots and then check voltage to the cell when the cell comes on.

Be careful to not allow the bare spots to make contact with anything.

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[JamesW]

 

[JamesW]

 

[JamesW]

What is the salinity reading from the box?

 

[JamesW]

Can you show the cell serial number?