Bradford White Ultra Low NOx D series gas error code 83 flashes
Gas control electronics fault
Quick answer
On Bradford White Ultra Low NOx D series gas, 83 flashes is a fault. It means gas control electronics fault. A first thing to check: Control needs to be reset.
- 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: Needs attention soon
- First safe check
- Interrupt the power supply to the unit rather than only cycling the gas control, then let it sit and restore power.
What 83 flashes means on this model
The control has found a fault in its own electronics, and the manufacturer lists two causes: it needs a reset, or it is wet or physically damaged. The second is worth taking seriously, because a control that has been wet will keep coming back.
Symptoms you will notice
- Eight-three flashes, then a three second pause
- Unit recovers after power is interrupted and then fails again
- Code appears after a flood, a leak, or work near the unit
- Nothing else on the appliance has failed
- Unit is otherwise physically undamaged and the code still returns
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:
- Control needs to be reset
- Control is wet
- Control is physically damaged
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.
- Interrupt the power supply to the unit rather than only cycling the gas control, then let it sit and restore power.
- Look for any sign of water or condensation inside the outer jacket near the control.
- Check whether the outer jacket or the seal has been left off, or whether the unit is installed somewhere water can reach it.
- If the control is wet, dry the area and the control before restoring power rather than powering it back up as it is.
Do not do these
- ×Do not leave the outer jacket off in a wet location, even briefly, because the control is the part that suffers first.
- ×Do not power the unit back up repeatedly if the control has been wet. Corrosion keeps working after the water dries.
- ×Do not use a heat gun or an open flame to dry a wet control.
When to call a technician
Book a technician, do not keep resetting it
This fault will not clear on its own. Every power cycle gives the control one more failed attempt, and repeated attempts are what turn a cheap part replacement into a seized or contaminated system.
- 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. Mains-connected electronics in a potentially wet enclosure is not a homeowner task.
What it costs to fix
Parts
Gas control $150 to $350.
Labor
One to two hours to replace, plus time to correct whatever let the control get wet.
DIY or technician
A technician job. Mains-connected electronics in a potentially wet enclosure is not a homeowner task.
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
- Models in scope
- Bradford White Ultra Low NOx D series gas
- 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.