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-   -   Model 141-50a whistles when heat is turned on (https://www.askmehelpdesk.com/showthread.php?t=732432)

  • Feb 5, 2013, 11:28 AM
    patrick o
    Model 141-50a whistles when heat is turned on
    I have 141-50a mueller climatrol furnace it was working fine now it whistles when I turn heat on what's wrong
  • Feb 5, 2013, 01:59 PM
    ballengerb1
    Do you have a small switch on your stat that can operate the fan ON or AUTO?
  • Feb 6, 2013, 05:44 AM
    ma0641
    Some models have a whistle signal when the filter is dirty and needs changing.
  • Feb 6, 2013, 11:25 AM
    wmproop
    What whistles? The Tstat or the furnace?

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