Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Pentair mastertemp 125 Heater Not Working

  1. Back To Top    #1

    Join Date
    Jun 2016

    Pentair mastertemp 125 Heater Not Working

    I have a Pentair Mastertemp 125 heater that was purchased last June. It was used for 7 weeks last year and 2 weeks this year and has now stopped working. It starts fires up and then quits, no codes. Repair man came out checked the pressure switch which he said was ok and said that heater is overheating, pool water is out of balance, heat exchanger is most likely full of calcium deposits and basically throw the heater away, warranty not valid. Is this possible? Is there anything I can do to try and fix this? I just paid almost $1000 to just throw it away !

  2. Back To Top    #2
    Casey's Avatar
    Join Date
    Apr 2007
    SW PA

    Re: Pentair mastertemp 125 Heater Not Working

    Welcome to TFP. Bumping to get you answers. Don't pitch anything. Well try to help.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  3. Back To Top    #3

    TFP Guide

    Join Date
    Jun 2012
    western NY

    Re: Pentair mastertemp 125 Heater Not Working

    Paul will be along sometime today to help. He is good with these things
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

Posting Permissions

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