Payne Furnace Code 34
WarningShown as: 3 short flashes, 4 long flashes
Ignition proving failure. Flame was not sensed during the trial for ignition, so the control repeats the ignition sequence three more times before lockout 14.
Manual wording: “34 IGNITION PROVING FAILURE - If flame is not sensed during the trial for ignition period, the control will repeat the ignition sequence 3 more times before lockout #14 occurs.”
Documented for: PG92ESA, PG95ESA, PG96VTA
Likely causes, most common first
- Gas valve turned off or manual shut-off valve closed
- Green/yellow wire not connected to the furnace sheet metal (control ground)
- Flame sensor grounded or oxide-coated
- Defective hot surface igniter
- Low inlet gas pressure
- Inadequate flame carryover or rough ignition
What you can safely check yourself
- Confirm other gas appliances still work, so you know gas service is on
- Make sure the furnace door is fully closed and latched
When to call a technician
Cleaning the flame sensor, measuring flame microamps, and testing the igniter all require opening a live gas appliance. Call a technician.
A Payne furnace throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- PG92ESA: Installation, Start-up, Operating and Service and Maintenance Instructions (Payne, PG92ESA multipoise 92% single-stage condensing gas furnace) · checked 2026-08-25
- PG95ESA: Installation, Start-up, Operating and Service and Maintenance Instructions (Payne, PG95ESA multipoise 95% single-stage condensing gas furnace) · checked 2026-08-25
- 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