Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Extremely incorrect Temp reading from Sun Touch controller

  1. Back To Top    #1
    Tonedeaf's Avatar
    Join Date
    Jun 2008
    Location
    East of Dallas
    Posts
    104

    Extremely incorrect Temp reading from Sun Touch controller

    So, I have a Pentair SunTouch Controller and the water temperature reading is displaying 100 degrees +. True water temp is actually 52. Thing is, I can't change the water temp when I go into the menu options of the controller, will not let me lower the temperature.

    Any ideas?
    14100 gallon IG Gunite Pool
    Sapphire Smoke Quartz Plaster
    Pentair SunTouch Controller, Intelliflo 4x160 Pump, 520 Cartridge Filter, Intellichlor SWG System
    Legend Platinum Cleaner with booster pump
    My Pool Build

  2. Back To Top    #2

    Join Date
    Dec 2010
    Location
    San Diego, CA
    Posts
    1,129

    Re: Extremely incorrect Temp reading from Sun Touch controller

    So when you go into the advanced menu you don't see options to calibrate the three temp sensors?

    Do you have the manual? If not download it from the pentair web site - towards the back there is a section on calibrating the thermometers and there is a table of resistance values vs temperature - pull the sensor wires from the PC board and measure the resistance - if it matches the resistance for 52 degrees then the sensor is fine.
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

  3. Back To Top    #3
    Tonedeaf's Avatar
    Join Date
    Jun 2008
    Location
    East of Dallas
    Posts
    104

    Re: Extremely incorrect Temp reading from Sun Touch controller

    Yes, in advanced menu I can change temps but the water temp will not go below 100+ degrees.

    I don't know how to measure resistance. What would I need to do that? Multimeter?
    14100 gallon IG Gunite Pool
    Sapphire Smoke Quartz Plaster
    Pentair SunTouch Controller, Intelliflo 4x160 Pump, 520 Cartridge Filter, Intellichlor SWG System
    Legend Platinum Cleaner with booster pump
    My Pool Build

  4. Back To Top    #4
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,331

    Re: Extremely incorrect Temp reading from Sun Touch controller

    A multimeter set on ohms is what you would use. I'm not sure what resistance you're looking for but it shouldn't be open.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  5. Back To Top    #5
    Tonedeaf's Avatar
    Join Date
    Jun 2008
    Location
    East of Dallas
    Posts
    104

    Re: Extremely incorrect Temp reading from Sun Touch controller

    Thanks. I have manual and shows what resistance should at certain temps.
    14100 gallon IG Gunite Pool
    Sapphire Smoke Quartz Plaster
    Pentair SunTouch Controller, Intelliflo 4x160 Pump, 520 Cartridge Filter, Intellichlor SWG System
    Legend Platinum Cleaner with booster pump
    My Pool Build

  6. Back To Top    #6
    Tonedeaf's Avatar
    Join Date
    Jun 2008
    Location
    East of Dallas
    Posts
    104

    Re: Extremely incorrect Temp reading from Sun Touch controller

    Keep forgetting that I am still under warranty on the equipment. Just called the builder and they will come out and take a look at it.
    14100 gallon IG Gunite Pool
    Sapphire Smoke Quartz Plaster
    Pentair SunTouch Controller, Intelliflo 4x160 Pump, 520 Cartridge Filter, Intellichlor SWG System
    Legend Platinum Cleaner with booster pump
    My Pool Build

  7. Back To Top    #7

    Re: Extremely incorrect Temp reading from Sun Touch controller

    I had the same problem (I couldn't get the measured pool temperature below 130, when it was actually 68), and another website suggested a hard reset. I turned off power to everything for an hour, turned it back on and everything was fine.
    Linda


    12' X 36" Intex Metal Frame Set (2530 GAL)
    2500 gph Intex cartridge pump
    Aquabot Pool Rover Jr.
    Tons of trees and pollen

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •