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    mc69nus's Avatar
    mc69nus Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 9, 2009, 02:46 PM
    Gmp open limit light
    I have a gmp gas heater. It is about 12 years old. The light is blinking 4 times. It indicates that the furnace control checks for an open limit. What does this mean?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Mar 9, 2009, 10:44 PM
    Find the limit control on the furnace and test/check it.
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