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Thread: Compool CP3800 Error (ERR1)

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    Compool CP3800 Error (ERR1)

    Hi all...let's get right to it I guess!

    Woke up this morning and the display on my Compool control system (pool/spa) CP3800 was showing the error code ERR1.

    The manual says the following about this error code:
    If there is a fault with the Water Temperature Sensor, the display will show “Err 1”.
     Check sensor cable and connections.
     Replace Water Temperature Sensor (model TS-5L).
    My pool has been closed since the end of October. Last night was the coldest night of the year with temps almost in single digits F.

    My question is, do I need to be concerned about this until the spring? Does this indicate a possible problem with the winterization? Anybody else with this equipment experience this problem?

    Any experience or advice is appreciated! I hate to stare at this error code all winter....it's an OCD nightmare!
    18' x 41' IG w/vinyl liner. 30000 Gallons. 78" x 78" poolside spa
    1.5 hp Hayward pump - sand filter & Tiger Shark QC robot
    Compool CP3800 Control Panel
    TF-100 kit
    Built in 2002. "Inherited" w/House in 2012. Located in Pittsburgh

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    Re: Compool CP3800 Error (ERR1)

    If you have OCD, Replace the sensor now. Make sure the the leads on the new sensor are red and green NOT red and black.
    Factory Warranty Station for:
    Jandy/Zodiac, Pentair, Sta-Rite, Raypak, Polaris,
    and Paramount pool cleaning systems.

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    Re: Compool CP3800 Error (ERR1)

    Thanks for the reply...is this a DIY? I figure I've got about average DIY skills. Any harm waiting until spring?
    18' x 41' IG w/vinyl liner. 30000 Gallons. 78" x 78" poolside spa
    1.5 hp Hayward pump - sand filter & Tiger Shark QC robot
    Compool CP3800 Control Panel
    TF-100 kit
    Built in 2002. "Inherited" w/House in 2012. Located in Pittsburgh

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    Re: Compool CP3800 Error (ERR1)

    Quote Originally Posted by brian4110
    Any harm waiting until spring?
    Just to your psych...

    5/16 nut driver, or screwdriver to change the sensor out of the plumbing, chase the wire to the box (low voltage side) wires are secured to a buss on the PCB (jewelers screwdriver). Wires attached to PCB are color specific.
    Factory Warranty Station for:
    Jandy/Zodiac, Pentair, Sta-Rite, Raypak, Polaris,
    and Paramount pool cleaning systems.

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    Re: Compool CP3800 Error (ERR1)

    Sounds like even I could change it out.

    Thanks for the help!

    FYI...just walked by the panel and the error code has disappeared. Might have had some intermittent cold weather freezing issue. I'll keep my eye on it until spring. Glad to know this is DIY though in case I need a repair.
    18' x 41' IG w/vinyl liner. 30000 Gallons. 78" x 78" poolside spa
    1.5 hp Hayward pump - sand filter & Tiger Shark QC robot
    Compool CP3800 Control Panel
    TF-100 kit
    Built in 2002. "Inherited" w/House in 2012. Located in Pittsburgh

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    Silicon Valley, CA
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    Re: Compool CP3800 Error (ERR1)

    If the sensor was replaced in the past, the wires may have been spliced somewhere along the line (lazy tech). Check for, and inspect splices.
    Factory Warranty Station for:
    Jandy/Zodiac, Pentair, Sta-Rite, Raypak, Polaris,
    and Paramount pool cleaning systems.

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    Re: Compool CP3800 Error (ERR1)

    I have the same Err1 message. I've had it for a while but didn't get around to changing the water sensor until I was ready to use the pool (and heater). I changed the sensor but I still ave the message.

    I've cross checked the sensor with the freeze sensor and a second new sensor, so I'm assuming this is a circuit board or connection issue? Does anyone know if I can avoid changing the circuit board, or replacing the whole controller?

    Is there a way to bypass the water sensor to run the mini-max heater, please?

    Thanks!
    25k I G plaster pool w/spa. 2.2HP Century Centurion switchless motor. COMPOOL lx3800. Pentair FNS Plus DE FILTER 60sq/ft.
    Houston, TX - direct sunlight 8 hours a day.

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    Re: Compool CP3800 Error (ERR1)

    Is it possible to remove and clean the contacts on the circuit board LX3800 before I shell out $500 for a new circuit board?

    Thanks
    25k I G plaster pool w/spa. 2.2HP Century Centurion switchless motor. COMPOOL lx3800. Pentair FNS Plus DE FILTER 60sq/ft.
    Houston, TX - direct sunlight 8 hours a day.

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