LED continuous OFF No power to control

What the control is telling you

The LED is dark, so the control has no power. The manual says only to check power.

Applies to: *UH1B040A9241A, *UH1B060A9361A, *UH1B080A9421B, *UH1C080A9601A, *UH1C100A9481A, *UH1D100A9601A, *UH1D120A9601A, *DH1B040A9241A, *DH1B065A9421A, *DH1C085A9481A, *DH1D110A9601A

Likely causes

• No power to the control

Test and repair steps

1. Turn off power at the disconnect before touching wiring or components.
2. Check the power supply to the furnace and that the blower door is on.

Settings for these units

• Clearance to combustibles · Trane S8V2
• Return filter size by cabinet width · Trane S8V2
• Return filter size by cabinet width · Trane S8B1, Trane S8X1, Trane S8X2
• Return filter size - upflow and downflow · Trane S9X1, Trane S9X2, Trane S9B1
• Clearance to combustibles · Trane S9X1, Trane S9X2, Trane S9B1
• Return filter size - upflow and downflow · Trane S9V2

Models that show this code

16 models in UH1, UH1/DH1

Other codes on the same units

• LED continuous ON IFC board fault - replace control
• LED flashing fast Normal - call for heat
• LED flashing slow Normal - no call for heat