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Discussion Starter · #1 ·
I have a new goodman furnace installed. The cooling part works but the furnace does not come on. The board blinks 9 times. Can anyone tell me what does this error code mean and how I can fix the provlem.
 

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Do you have a model number that you could post? Ussually you can find a number on the side of the furnace if you remove the top service door. You could further check inside that door and see if there is a legend which tells you what the flashing lights mean. If there is a manual with the furnace you could check that as well.
 

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Discussion Starter · #3 ·
Error code 9

Model number is A80UH
According to the manual "incorrect line voltage phasing" .
I have checked all the connections but can not figure out what I did wrong.
 
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