Robert Hefner Posted May 31, 2017 Report Share Posted May 31, 2017 Hey folks, I am now on my second board in and the board keeps blowing in the same spot. When it blows the back of the board is black. It blows under where the blower connections are. If you refer to the lower left of the Main control Module you will see connection labeled "L1" and "L2" this is where the board blows. Both boards blew out in the same spot. The heater was originally installed in 2002 and the model # H400IDLCAL the "CAL" is for California Pools as it was branded for them. Any ideas on what might be the root cause? - Robert Quote Link to comment Share on other sites More sharing options...
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