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Error code reference
Trane Furnace Error Code Rapid
Twinning Error, incorrect 24V Phasing.
SourceTrane Furnace - Service Manual: UD2/DD2 Two-Stage Induced Draftp. 11, 16
Where this code is documented
1 manual in the MyPros+ library documents this code for Trane furnace.
Models covered by the manuals that document this code
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