Error Code Control Circuitry Lockout

Payne PG8MAA Error Code Control Circuitry Lockout: Control Circuitry Lockout

TL;DR
Auto-reset after 1 hour lockout. Caused by flame circuit failure, gas valve relay stuck open, or software check error. Reset power to clear lockout. Replace control if code repeats.
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 Control Circuitry Lockout Mean?

Auto-reset after 1 hour lockout. Caused by flame circuit failure, gas valve relay stuck open, or software check error. Reset power to clear lockout. Replace control if code repeats.

Common Causes

Cause Likelihood DIY?
Flame circuit failure Most common ✗ Call a pro →
Gas valve relay stuck open Common ✗ Call a pro →
Software check error Common ✗ Call a pro →
Defective furnace control board Uncommon ✗ Call a pro →

When to Call a Professional

Contact a licensed HVAC technician if:

Sources

  1. Payne PG8MAA Installation and Operating Instructions Manual - ManualsLib