Aqua-PL- plus ppm instant reading in (-) is half of (+) & read very low vrs confirmed actual

system consistently reads 600 to 800 ppm below confirmed actual
Also, when I reset instant reading & countdown then settles. The (-) is consistently 1/2 or less of the (+) reading as follows;
also note big difference in amperes, these should be the same Values just reverse.
a) -27.2v. -3.9amp 88F 1200ppm
b) +25.7v. +6.37amp 88F 2600ppm
c) actual same sample same time as above , meter 3686ppm , chemical test 3400, pool store 3300
this is current info but this issue has been going on since the install in 2018, multiple warranty visits, just replace cell but the low readings never is fixed. I added as much a salt as possible without going over 3400ppm actual to try and push the system reading up.
is it a cell issue , a board or transformer?

SYSTEM DETAILS
Hayward-gold line Aqua-plus (PL-Plus 2018 serial# 3L17058-1005922) ( board pn # G1-011049f. Software Ver 4.46)
hayward turbo-cell GLX-cell 15 W (install 8-2020 new serial# 1E20198-400705 pn# G1-929026A-revC) (this is the third new cell since 2018) ( cleaned just prior to the above readings, and cleaned every 3 months)
15,500 is gal inground plaster pool. overall chemistry is properly balanced and checked
 
Maybe replace the rectifiers to see if that helps.




1633366255150.png
 
The orange wires are AC power to the rectifiers.

The red wire is the positive terminal, which might have a cut corner or a + sign and the terminal is rotated 90 degrees compared to the other three terminals.

The black wires are the negative DC voltage.
1633366551029.png
1633366561055.png
1633366643010.png
 
If the rectifiers do not help, then the circuit board is likely to be bad if the cell is definitely good.

Check the back of the circuit board.

Can you show the rectifiers and the back of the circuit board?
 
Last edited:

Enjoying this content?

Support TFP with a donation.

Give Support
If the rectifiers do not help, then the circuit board is likely to be bad if the cell is definitely good.

Check the back of the circuit board.

Can you show the rectifiers and the back of the circuit board?
Hi, I purchased the GBPC 3510 (1 Phase 1,000v 35a) & KBPC 3506 (600v 35a full wave) rectifiers.
The existing ones I am replacing are GBPC3504-6415 and GBPC-3504-6375.
Which new one replaced which old one , can use your help. Trying to get specs on the old ones but no Luck yet. Thank you
Back of the board is clean . The transformer looks a little brown from heat.
 

Attachments

  • EB560204-F181-4725-A1D6-74C217D24A9E.jpeg
    EB560204-F181-4725-A1D6-74C217D24A9E.jpeg
    306 KB · Views: 3
  • A2EFB9B5-92E5-4CBF-9E43-CEE081179464.jpeg
    A2EFB9B5-92E5-4CBF-9E43-CEE081179464.jpeg
    294.3 KB · Views: 3
  • 1760F721-5D53-41C2-92F6-71C4B86ED040.jpeg
    1760F721-5D53-41C2-92F6-71C4B86ED040.jpeg
    293.8 KB · Views: 3
Hi, I purchased the GBPC 3510 (1 Phase 1,000v 35a) & KBPC 3506 (600v 35a full wave) rectifiers.
The existing ones I am replacing are GBPC3504-6415 and GBPC-3504-6375.
Which new one replaced which old one , can use your help. Trying to get specs on the old ones but no Luck yet. Thank you
Back of the board is clean . The transformer looks a little brown from heat.
 

Attachments

  • 4201EE9D-BFDB-4845-BD96-65320A5EBC18.jpeg
    4201EE9D-BFDB-4845-BD96-65320A5EBC18.jpeg
    516.4 KB · Views: 3
  • 0F917070-F411-48ED-9C09-486B08A2F19F.jpeg
    0F917070-F411-48ED-9C09-486B08A2F19F.jpeg
    645.8 KB · Views: 3
I think that all bridge rectifiers are full wave.

I am not sure why the datasheet says half wave.


Bridge rectifier definition: A bridge rectifier is a type of full wave rectifier which uses four or more diodes in a bridge circuit configuration to efficiently convert the Alternating Current (AC) into Direct Current (DC).
 

Enjoying this content?

Support TFP with a donation.

Give Support
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.