1994 Goodman Gmp705-3 Gas Flame Shuts Off - HVAC - DIY Chatroom Home Improvement Forum


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Old 10-24-2012, 10:38 PM   #1
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1994 Goodman gmp705-3 gas flame shuts off


Unit starts up..igniter glows burners fire up but the gas flame shuts off after about 6 seconds...replaced the flame censor and still same problem..I'm thinking it could be the gas regulator or a bad board..any input from anyone would be appreciated thanks

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Old 10-24-2012, 11:02 PM   #2
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1994 Goodman gmp705-3 gas flame shuts off


What code does board flash?

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Old 10-25-2012, 12:06 AM   #3
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1994 Goodman gmp705-3 gas flame shuts off


Make sure the ground wire is tight and clean. Make sure the flame sensor is in direct path of the flame. If all of this tests good but same thing than the board is not doing it's job, time for a control board.
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Last edited by Doc Holliday; 10-25-2012 at 12:10 AM.
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