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Thread: Pentair mastertemp 250 heater

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    Join Date
    Feb 2014
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    Pentair mastertemp 250 heater

    I keep receiving a eo5 code after heater runs for about 30 seconds

    HELP

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    Kiss4aFrog's Avatar
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    May 2013
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    Hudson, WI
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    Re: Pentair mastertemp 250 heater

    On page 44 that E05 code is mentioned and the diagnostic tree shows things to check to correct it.

    http://www.pentairpool.com/pdfs/MasterTempEng.pdf
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
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    Kiss4aFrog's Avatar
    Join Date
    May 2013
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    Hudson, WI
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    Re: Pentair mastertemp 250 heater

    Did you ever get the heater back in service ??
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

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