Bradford White Water Heater Error Code 10 flashes (V1)

Ten flashes on a Bradford White water heater with a V1 gas control indicates that the control has detected insufficient combustion air during burner operation. The unit shuts down as a safety measure to prevent incomplete combustion. The fault is signaled by the LED on the gas control flashing 10 times in a repeating sequence. Airflow obstructions or a failed gas control are the most common causes.

The error code itself represents the water heater's safety system working correctly by shutting down the burner when it detects a combustion air problem. Operating a water heater with insufficient combustion air can produce carbon monoxide, which is a serious health hazard. Do not attempt to bypass the lockout. Address the root cause of the airflow restriction before returning the unit to service.

If the fix involves clearing an airflow obstruction or improving room ventilation, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the gas control valve has failed and requires replacement, parts and labor costs can range from $300 to $600 or more depending on the model and local labor rates. Getting a diagnosis from a licensed plumber or HVAC technician before purchasing parts is recommended.

Start by checking the area around the water heater for any obstructions blocking airflow to the combustion chamber, including lint, debris, or nearby stored items. Clear any blockages and then reset the gas control by following the ignition reset procedure on the unit's label. If the 10 flash code returns after reset, inspect the intake ducting if applicable, and evaluate the ventilation of the installation space. Persistent faults after these checks indicate the gas control likely needs to be replaced by a qualified technician.

Resetting the gas control is the first recommended step and may clear the fault if the combustion air issue was temporary. However, if the underlying cause, such as a blocked intake or a confined installation space, has not been corrected, the error will return. If the fault persists through multiple reset attempts with no identifiable airflow restriction, the gas control itself may need to be replaced.