Payne Furnace Rapid Flash
Hard lockoutShown as: Amber LED blinking rapidly with no pause between flashes
Line voltage (115 V) polarity is reversed at the furnace, or on twinned units the low-voltage transformer phasing is wrong. The control cannot prove flame, so the furnace will not run.
Manual wording: “Is AMBER LED status light blinking rapidly without a pause? ... Check for correct line voltage polarity. If units are twinned, check for proper low-voltage (24V) transformer phasing.”
Documented for: PG96VTA, PG92ESA, PG95ESA
Likely causes, most common first
- Hot and neutral swapped at a junction box, outlet, or the furnace
- Improper 24 V transformer phasing on twinned furnaces
When to call a technician
Correcting reversed line-voltage polarity means working on live 115 V wiring. Call a licensed HVAC technician or electrician.
A Payne furnace throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Source
- PG96VTA: Installation, Start-up, Operating and Service and Maintenance Instructions (Payne, PG96VTA two-stage, variable-speed ECM 4-way multipoise condensing gas furnace) · checked 2026-08-25