Tech Notes
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Title: Error 4 on a Drywell
Created: 13 Apr 2012
Last Revised: 13 Apr 2012
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Applies To: All Drywells
Problem Description: Error 4 is displayed on the drywell
Resolution/Work Around: The error 4 is an ADC error (Analog to Digital Converter). This is caused when the ADC is not converting or producing a usable signal to the controller. The ADC chip has gone bad. Replacement of the analog board or the controller, dependant on the model being serviced, is recommended.