naturaldee Posted March 11, 2008 Report Share Posted March 11, 2008 I just got our hot tub hooked up and it ran ok for a few hours and now is reading E4 which is a shorted flow switch. The tech said it might be hit in the pipes but thought it would most likely be a faulty switch. How do I get the air lock out to try that option first Quote Link to comment Share on other sites More sharing options...
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