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Home > Charge Controller Support > PWM Solar Charge Controller Support > PWM-30-UL > A Loud Beeping and a POL Error. What Does it Mean for Your PWM-30 Controller?
A Loud Beeping and a POL Error. What Does it Mean for Your PWM-30 Controller?
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A Loud Beeping and a POL Error. What Does it Mean for Your PWM-30 Controller?

You may see a POL error along with a loud beeping sound on your PWM-30 solar controller, but have no fear! The solution is quite simple. Watch the video to learn how to fix this error message.

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