Lennox Furnace Error Code 5+5

Where this code is documented

2 manuals in the MyPros+ library document this code for Lennox furnace.

Models covered by the manuals that document this code

• SL280DF070V36A
• SL280DF090V48B
• SL280DF090V60C
• SL280DF110V60C
• SL280DFV
• SL280UH070V36A
• SL280UH070XV36A
• SL280UH090V36B
• SL280UH090V48B
• SL280UH090XV48B

• 1Reverse line voltage polarity.
• 1 FlashFlame present with gas valve de-energized (control 103085).
• 1+2Low flame current during run mode (Board 100869).
• 1+3Flame sensed out of sequence
• 10Watchguard
• 11Pressure switch stuck closed prior to activation of…
• 2Improper Earth Ground.
• 2 FlashesPressure switch closed with combustion air inducer…