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Thread: New Mastertemp heater whines

  1. Back To Top    #1

    Join Date
    Aug 2009
    Novato, CA

    New Mastertemp heater whines


    I've recently installed a new Pentair Mastertemp 200 heater. The blower motor has an intermittent high-pitched whine. I know it's not the "flame too rich" problem the troubleshooting guide mentions because it occurs even when the burner cycles off and/or when I turn the gas supply valve completely off.

    I saw one post in the archives about this problem but nothing about the fix. Does anyone have any further information?

    It's still under warranty, but I wanted to get as much info as possible prior to calling Pentair.


  2. Back To Top    #2

    In the Industry
    ps0303's Avatar
    Join Date
    Jul 2011

    Re: New Mastertemp heater whines

    Supposedly, Pentair has a different air orifice grate that will help with this issue. Give them a call.

    A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you.

  3. Back To Top    #3

    Join Date
    Jun 2011
    Long Beach, CA

    Re: New Mastertemp heater whines

    The whine could be caused by a couple different things, my in-laws had a whine that started on the second day that ended up being a broken piece of plastic. Call Pentair and setup a service call.
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