I have a 20,000 Salt Water Pool inground with pebbletec surface that was built in may 2006. I replaced the first salt cell about 2yrs ago along with the Flow Sensor and cable.
All was fairly well until this summer, started to get intermittent cell/flow sensor codes on the unit throughout july/aug. Cleaned the cell and sensor as recommended but the intermittent codes continued to show up.
Currently the only code that showing up is 170.
I did the assessment on the backboard, transformer, and front board with my multimeter.
The only readings that were out of line were 4-5 120mVAC was 0 and the Cell Voltage Output to the cell was non existent also.
Transformer voltage reading (1-8) was 79V, (2-7) was 68V, (3-6) 21V, and (4-5) was 0.
I would prefer not to have to replace everything in the unit and wanted to know if anyone had a similar problem and what the solution was for them.
How do you know if the backboard is bad versus the transformer?