Bradford White Ultra Low NOx D series gas error code 92 flashes
Combustion chamber temperature sensor out of specification
Which models this applies to. This page covers the Bradford White Ultra Low NOx residential D series gas codes.
What is specific to the Ultra Low NOx D series gas platform
Atmospheric gas water heater with a flue damper and a Honeywell WV4472 electronic gas control, which reports faults as a counted LED flash with a three second pause between repeats. The damper codes have no equivalent on units that do not have one, and the codes are not shared with the condensing platforms of other brands.
Your control board does not print the code. It blinks an LED, and you count the flashes against a legend printed on the board or inside the access panel. Count a full cycle before you read it, because the pattern pauses and repeats.
Quick answer
On Bradford White Ultra Low NOx D series gas, 92 flashes is a fault. It means combustion chamber temperature sensor out of specification. A first thing to check: Chamber temperature sensor out of calibration.
- Applies to
- Bradford White Ultra Low NOx D series gas
- Bradford White Ultra Low NOx residential D series gas codes · Water Heater
- Type of code
- Fault
- Urgency: Stop using it
- First safe check
- Power off at the breaker before touching anything near the chamber door.
What 92 flashes means on this model
The sensor in the combustion chamber has drifted out of calibration or has shorted. It is a chamber measurement rather than a tank one, and because it protects the chamber the unit will not run on a reading it does not trust.
Symptoms you will notice
- Nine-two flashes, then a three second pause
- Unit will not relight without a reset
- Code returns immediately after each reset
- No heat at all
- Problem follows work on the burner or the chamber
Common causes
The code tells you what the control detected, not which part failed. These are the causes we see most often, roughly in order of likelihood:
- Chamber temperature sensor out of calibration
- Possible short in the sensor or its wiring
- Failed chamber sensor
- Sensor disturbed during burner service
What you can safely check
These are homeowner-level checks. None of them need you to open a live electrical compartment or work on gas.
- Power off at the breaker before touching anything near the chamber door.
- Check the chamber sensor wiring connector for corrosion, a backed-out pin, or a break where it passes through the burner door.
- Look at the sensor itself for physical damage or a coating of debris.
- Note whether the fault appeared after the burner was cleaned or the inner door removed, since both disturb that area.
Do not do these
- ×Do not bypass the chamber sensor to keep the burner available. It is a protection on the chamber that can crack if the burner runs when it should not.
- ×Do not recalibrate the sensor to make the code go away without the test the manual specifies.
- ×Do not work inside the burner compartment with the power on.
When to call a technician
Stop using the appliance and call today
This one is a safety limit, not a nuisance. The control is shutting the unit down to prevent damage or a hazard, and it will keep doing that until the underlying cause is fixed. Running it anyway risks the expensive failure it was designed to prevent.
- This is a fuel-burning appliance, so treat anything involving a burner, gas valve or flue as technician work. If you smell gas at any point, leave the property and call the gas utility from outside rather than continuing to diagnose.
- If the appliance has stopped mid-cycle, is making a noise you have not heard before, or smells burnt, stop reading here and call. Those are symptoms of something the fault code does not describe well enough.
A technician job. The test for this sensor is a specific procedure in the service manual, and the sensor is a combustion protection.
What it costs to fix
Parts
Chamber temperature sensor $40 to $120. Gas control $150 to $350.
Labor
One to two hours to test and replace.
DIY or technician
A technician job. The test for this sensor is a specific procedure in the service manual, and the sensor is a combustion protection.
Typical US part and labor ranges, 2026. They vary by region, model and contractor, so treat them as a planning figure, not a quote.
Scope of this code
- Code table
- Bradford White Ultra Low NOx residential D series gas codes
- How this model reports the code
- Blinking LED, counted against a legend
- Models in scope
- Bradford White Ultra Low NOx D series gas
- How this platform differs
- Atmospheric gas water heater with a flue damper and a Honeywell WV4472 electronic gas control, which reports faults as a counted LED flash with a three second pause between repeats. The damper codes have no equivalent on units that do not have one, and the codes are not shared with the condensing platforms of other brands.
- Checked
- Confirm on your own unit
- Find the model number on the data plate, then check this code in the service manual for that model. Manufacturers revise code tables between model years, and a revised board can renumber a fault.