Error Code LED Steady On (Continuous)
Info

Amana AMSS920803BN Error Code LED Steady On (Continuous): Normal Operation

TL;DR
Your Amana AMSS920803BN is operating normally. The steady LED means no faults are present and no action is needed.
Disclaimer
This article is for informational purposes only and does not guarantee the accuracy or completeness of the information provided. Always turn off power and gas supply before attempting any repairs. If you smell gas, leave immediately and call your gas company. Consult a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk.

What Does Code LED Steady On (Continuous) Mean?

A steady, continuously lit LED on your Amana AMSS920803BN's integrated control module indicates that the furnace is receiving power and operating without any faults. This is the normal state when the furnace has power and is either actively heating or standing by waiting for a call from the thermostat.

The diagnostic LED on this furnace communicates through different flash patterns. A steady on light is the one pattern you want to see — it confirms that the control module is powered, all safety circuits are closed, and no error conditions have been detected. The furnace is ready to respond when your thermostat calls for heat.

If your furnace is not heating despite showing a steady LED, the problem is likely outside the furnace itself. Check that your thermostat is set to heat mode with the temperature set above the current room temperature. Also verify that the thermostat wiring is intact and the fan switch is set to AUTO rather than ON.

Contact a licensed HVAC technician if any of these apply:

Sources

  1. Installation Instructions for *MSS9* & *CSS9* Single-Stage Gas Furnace

✓ Verified against manufacturer service manual — March 2026