Error Code 5 Blinks (2-sec pause)

Rheem RGRA-07EMAES Error Code 5 Blinks (2-sec pause): 5 Blinks (2-sec pause)

TL;DR
A twinning circuit fault has been detected. This code only applies when two furnaces are connected together in a twinned configuration. It indicates a communication problem between the two Integrated Furnace Controls.
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 5 Blinks (2-sec pause) Mean?

A twinning circuit fault has been detected. This code only applies when two furnaces are connected together in a twinned configuration. It indicates a communication problem between the two Integrated Furnace Controls.

When to Call a Professional

Contact a licensed HVAC technician if:

Sources

  1. Rheem RGRA Series Installation Instructions (92-24161-16-17)