Error Code No LED Signal

Amana AMSS920803BN Error Code No LED Signal: No LED Signal

TL;DR

No 115 volt power to furnace, or no 24 volt power to integrated control module.

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 No LED Signal Mean?

No 115 volt power to furnace, or no 24 volt power to integrated control module.

Common Causes

Cause	Likelihood	DIY?
Manual disconnect switch OFF, door switch open, or 24 volt wires improperly connected or loose	Most common	✗ Call a pro →
Blown fuse or circuit breaker	Common	✗ Call a pro →
Integrated control module has an internal fault	Common	✗ Call a pro →

When to Call a Professional

Contact a licensed HVAC technician if:

Basic troubleshooting did not resolve the error
You smell gas at any point during the process
You are not comfortable working around gas lines or electrical components
The unit needs a gas valve, control board, or motor replacement

Sources

Service Instructions - GMSS9*/GCSS9*/AMSS9*/ACSS9* Single Stage Gas Furnaces and Accessories