Check system no cell power - not producing chlorine

poolquestion123 · May 21, 2024

I have an Aqua Logic Board and Hayward Tcell940 (2 years old)
When the clorinator count down ends I hear a click and immediately the check system light comes on.
I took the cell to leslies - PASS and it's clean
I replaced the circuit board. (same error but now with a 1 on the end "Check system no cell power 1")
I took the old circuit board to saltsolutions in tampa and he told me the board is good.
Fuses have been checked with a volt meter.
What am I missing? Please give me a clue. thanks!

mas985 · May 21, 2024

Welcome to the forum!

It is likely either the transformer or the rectifiers.

Measure the AC voltage across the two yellow wires coming from transformer.

The rectifiers can be tested with the leads removed and an ohm meter.

This may be helpful for diagnostics:

https://hayward.com/media/akeneo_connector/asset_files/P/L/PL447c_ProLogic_TSG_2aad.pdf

Hayward Aqualogic - Further Reading

www.troublefreepool.com

poolquestion123 · May 21, 2024

Thanks. AC voltage on the 2 yellow is 24.
I'll replace the rectifiers. More later.

poolquestion123 · May 22, 2024

Replaced rectifiers and the check light is staying off.
My chlorine is good right now.
I'll check in 24 and see if it holds.
PS We are novice electricians. Novice! Replacing the board took about 1 hour. (the second time 20 minutes) If we can do so can you. Before you start write down the all of the settings. (Salt solutions guy in Tampa was great. He tested the board and the salt cell. If I had a board that need tlc I'd go to him/mail to him.

poolquestion123 · May 23, 2024

That was it! not the board - the rectifiers

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Check system no cell power - not producing chlorine

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Hayward Aqualogic - Further Reading

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