Ruud UGRA-07EMAES Furnace Error Codes

Single Stage Gas Furnace | Control Board: Integrated Furnace Control (IFC)

Not your model? View all Ruud models →

Disclaimer
This information is for reference purposes only and does not guarantee accuracy or completeness. Always consult your owner's manual and a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk.

All Error Codes

Code Name Severity DIY?
1 Blink Soft Lockout High ✗ Call a pro →
2 Blinks Pressure Switch Open High ✗ Call a pro →
3 Blinks Limit Switch Open High ✓ Yes →
4 Blinks Pressure Switch Shorted High ✗ Call a pro →
LED Off No Power to Control Board High ✓ Yes →
LED Steady On Normal Operation Info — →
Flame LED Rapid Blink Flame Sense Issue High ✗ Call a pro →
Flame LED Slow Blink Marginal Flame Sense Current Low ✓ Yes →

How to Read the Error Code

The Integrated Furnace Control (IFC) has a microprocessor status LED and a power LED for diagnostics. The status LED blinks a pattern to indicate fault conditions. A separate flame sense LED (yellow) indicates flame current status: steady on for good current, flashing for marginal current.

About This Model

The Ruud UGRA-07EMAES is a single stage gas furnace using the Integrated Furnace Control (IFC) control board.