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Error code reference

Bradford White Water Heater Error Code 6-1 flash

Failed to light pilot within 90-second trial for ignition

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What the 6-1 flash error code actually means

Your Bradford White water heater tried to light the pilot flame but was unable to get it going within the allowed time. The heater will try again on its own after about 5 minutes, but if it keeps failing, something is preventing the pilot from lighting or staying lit. Common culprits include a blocked gas tube, a dirty igniter, or low gas pressure coming into the unit.

Diagnostic procedure

The full 6-1 flash procedure

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1
First diagnostic step
Inspect pilot per Service Procedure II (page 18): check for unstable pilot, blocked/restricted pilot tube, oxidation on electrode, wire damage, or low gas pressure.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of 6-1 flash

Ranked by how often they cause this code
  1. 1Blocked or Restricted Pilot Tube
  2. 2Oxidation or Fouling on the Igniter Electrode
  3. 3Unstable Pilot Flame
  4. 4Low Gas Supply Pressure
  5. 5Damaged Wiring in the Ignition Circuit

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Questions people ask about 6-1 flash

What does 6-1 flash mean on a Bradford White water heater?
The 6-1 flash code means the water heater failed to ignite the pilot flame within its 90-second trial for ignition period. The ignition control module attempted to fire the pilot but could not confirm a stable flame before the timer expired. The system will automatically attempt to reset and retry after a 5-minute lockout. If the fault repeats, a physical inspection of the pilot assembly, gas supply, electrode, and wiring is needed.
Is the 6-1 flash error on my Bradford White water heater a safety hazard?
The 6-1 lockout is a safety feature, not a hazard in itself. The control module shuts down the ignition attempt to prevent unburned gas from accumulating. Because the system stops gas flow during a lockout, the situation is controlled and not immediately dangerous. However, you should not repeatedly attempt manual resets without identifying and correcting the underlying cause.
How much does it cost to repair a Bradford White water heater showing the 6-1 flash code?
Repair costs vary depending on the root cause. Cleaning the electrode or clearing a blocked pilot tube is low-cost, potentially just a service call fee ranging from $75 to $150. Replacing the igniter electrode or wiring harness may add $50 to $150 in parts. If the gas valve or ignition control module requires replacement, total repair costs could range from $250 to $600 or more depending on labor rates in your area.
Can I fix the 6-1 flash error myself, or do I need a technician?
Some causes of the 6-1 fault are DIY-friendly, such as cleaning a fouled electrode or checking for obvious wiring damage. However, diagnosing low gas pressure or safely servicing the gas valve requires proper tools and training. If you are not comfortable working with gas appliances, a licensed technician should perform the inspection and any repairs.
Will resetting the water heater clear the 6-1 flash code?
The unit auto-resets after 5 minutes and will attempt ignition again on its own. A manual reset may temporarily clear the display, but if the underlying cause is not corrected, the 6-1 fault will return during the next ignition attempt. Clearing the code without addressing the root cause only delays the repair.

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