Lennox Furnace Error Code DS1 Slow Flash / DS2 Slow Flash

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

• G61MP-36B-045
• G61MP-36B-070
• G61MP-48C-090
• G61MP-60C-090
• G61MPV-36B-045
• G61MPV-36B-070
• G61MPV-36B-071
• G61MPV-36C-090

• 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…