No Power or Generating Light on AquaRite

[dblko]

Upon starting the filter pump the SWG gets power and the "No Flow" LED blinks for a few seconds.
However other LEDs stay dark, including power and generating.

Cycling through diagnostics gives:
76 (Water Temperature ?)
5.0 (Cell Voltage ?)
0.00 (Cell Amps)
89P (Dial)
- 0 ( Salt Reading)
AL -5
|- 1.40 (Board Version)

This is when running the filter pump from the JANDY in service mode. I have also issues with the Jandy board acting up, but not sure if this is related
or if all the SWG is receiving from the JANDY PCB controller is the main power from the filter pump running.

 

[ajw22]

@JamesW Low voltage? Rectifier problem on the board?

 

[JamesW]

Probably a bad thermistor.

 

[dblko]

Probably a bad thermistor.

View attachment 446524

Thanks for taking a close look, I missed that detail.
Looks like there is a way to make sure and measure the voltage between the Thermistor and the black terminal according to: Hayward Aquarite SWG - Further Reading
Might try that, but won't hurt to order the part anyways. Thinking to rather than desolder the part could probably just clip the old one off and leave long enough legs to be able to fit screw in block terminals for the new piece.
(Before proceeding need to get the Jandy Power Center Board fixed in order to be able to run the filter pump and get consistent power to the SWG in the first place.)

 

[dblko]

I finally got around to replace the Thermistor. Took a long time but had to first fix the filter pump control board (different story).
Now getting both the power and generating lights lighting up in bright green.
I think I remember those lights being dimmer previously, perhaps a sign of the old Thermistor already deteriorating.

I guess all I can do now is to wait and see if Chlorine levels are actually increasing.
Here are the new readings from the panel, does this look OK?

74 (Water Temperature ?)
25.2 (Cell Voltage ?)
5.21 (Cell Amps)
100P (Dial)
- 2800 ( Salt Reading)
AL -5
|- 1.40 (Board Version)

 

[ajw22]

The voltage and amps say your cell is generating.

 

[dblko]

Thanks, looks like its working. I was able to confirm chlorine with a test strip.
It's also generating quite a number of bubbles at the jets, seems a bit much actually.
Dialing the machine down to 60P for now.

 

[JamesW]

Glad we could help.

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[GAH1068]

My Aquarite just started to do the same thing today.. Near end of season for me but bought repair kit to replace thermistor and fuse so hopefully I will be back in business early next week. I had to replace the LCD board this spring when the push button stopped working. Just looked at my board and cracked thermistor like everyone said would be issue.

 

[dblko]

My Aquarite just started to do the same thing today.. Near end of season for me but bought repair kit to replace thermistor and fuse so hopefully I will be back in business early next week. I had to replace the LCD board this spring when the push button stopped working. Just looked at my board and cracked thermistor like everyone said would be issue.

View attachment 453592

Good luck. Clearly looks like the thermistor is bad. Luckily it is not expensive to fix. Crazy though how expensive those control boards are if one needs to actually fully replace it.