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tds

  1. E

    Need help with a problem

    I have a HM ps-202 controller for water purification and when I turn on my solenoid valves for the the tds goes out of control, the values instantly spike from 0 to 900 tds. Whats my problem? I have narrowed it down to the power supply. Everything is in the van run by a pure sin wave honda...

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