Bradford White Water Heater Error Code 63: Meaning and Fix

Bradford White water heater error code 63 typically indicates an electronic control board communication failure or sensor fault, requiring a power reset or component inspection.

Table of Contents

What does the error code 63 mean on a Bradford White water heater?
What usually causes error code 63 to appear?
What are the quick fixes to try first for error code 63?
How can you check internal wiring if the reset fails?
Which fix matches your specific water heater symptom?
When should you stop troubleshooting and call a professional?
What information should you have ready before calling for service?
How can you keep error code 63 from coming back?

What does the error code 63 mean on a Bradford White water heater?

Error code 63 on a Bradford White water heater typically indicates a communication or internal electronic fault within the control system.

Modern water heaters rely heavily on electronic control boards to monitor sensors, gas valves, and overall system safety. When code 63 appears, the main control board detects an abnormality in data transmission or a circuit failure. Because error definitions can vary slightly across different model lines and manufacturing years, always confirm your specific model details in the owner manual.

The control board detects an interruption in internal electrical communication signals.
Error meanings can vary by specific model line or year of manufacture.
Confirm your exact unit specifications in the manufacturer support page or owner manual.
Internal wiring harnesses might experience temporary signal degradation due to moisture.
Persistent faults often point to a failing electronic control module requiring replacement.

What usually causes error code 63 to appear?

Common causes include temporary electrical glitches, loose wiring connections, or a malfunctioning electronic control board.

Water heaters operate in environments prone to temperature fluctuations and humidity, which can impact delicate electronics. Power surges from electrical storms or loose internal wire connections often disrupt signal transmission between components. Over time, electronic components can also degrade, triggering persistent error codes that prevent normal water heating cycles.

Temporary electrical glitches caused by minor power surges or voltage drops.
Loose or corroded wire harness connections between the display and control board.
Accumulated moisture inside the control compartment affecting low-voltage circuits.
Component failure on the main electronic control board itself.
Outdated or corrupted firmware on select digital control models.

What are the quick fixes to try first for error code 63?

Perform a simple power reset by turning off the breaker to clear temporary electronic glitches.

Before attempting any physical inspections, turn off the dedicated circuit breaker supplying power to the water heater to ensure personal safety. Resetting the electrical supply can clear minor glitches in the control memory. Follow these sequential steps carefully to perform a safe system reboot.

Turn off the power switch or dedicated circuit breaker supplying the water heater.
Wait a full sixty seconds to allow all internal capacitors to fully discharge.
Turn the circuit breaker or power switch back on to restart the system.
Observe the digital display to see if error code 63 disappears immediately.
Run a hot water tap nearby to verify if normal heating operation successfully resumes.

How can you check internal wiring if the reset fails?

Inspect internal wire harnesses for secure connections after ensuring power is completely disconnected.

If a simple power reset does not clear the code, a loose wire connector may be interrupting communication. Always turn off the breaker before removing any access panels to touch internal components. Carefully check that all plugs are firmly seated into the electronic control board.

Turn off the main electrical breaker to eliminate any risk of electric shock.
Remove the outer metal control compartment access cover using a screwdriver.
Visually inspect all plug-in wire harnesses connected to the main control board.
Gently press each connector to ensure it is firmly and securely seated.
Reinstall the access cover and restore power to verify if the code clears.

Which fix matches your specific water heater symptom?

Match your exact display behavior and operational symptoms to the correct diagnostic action below.

Symptom	Likely cause / fix
Code appears briefly after a storm	Power surge; perform full electrical breaker reset.
Code stays on constantly with no hot water	Control board failure; replace control module.
Code intermittently turns on and off	Loose wire harness; secure internal connections.
Display is completely blank with code 63	Transformer or power supply fault; check voltage.

When should you stop troubleshooting and call a professional?

Stop immediately and call a licensed technician if electrical components are damaged or gas smells are present.

Safety is always the top priority when dealing with household appliances connected to electricity or gas lines. If you notice burnt odor, scorched wiring, or any gas smell around the appliance, shut off the gas supply and stop working immediately. Attempting advanced electrical repairs without proper certification creates severe hazards.

Any smell of gas requires immediate shutdown and a call to the gas utility.
Visible burn marks or melted insulation on the control board require professional service.
If error code 63 persists after a power reset and wiring check.
When replacement of the main electronic control board or gas valve is necessary.
If you feel uncomfortable or uncertain about performing any electrical steps.

What information should you have ready before calling for service?

Gather your exact water heater model number, serial number, and warranty details before calling support.

Providing accurate information helps technicians diagnose and resolve the issue much faster on the first visit. Locate the manufacturer data rating sticker on the outer tank shell to find your appliance specifications. Be prepared to explain what troubleshooting steps you already tried.

The complete model number and serial number from the rating plate.
The approximate purchase date and current warranty coverage status.
A clear description of error code 63 and when it first appeared.
A summary of the reset and wiring checks you already performed.
Contact information and specific directions for the service technician.

How can you keep error code 63 from coming back?

Install a surge protector and schedule annual maintenance to protect sensitive electronic components.

Protecting your water heater from electrical voltage spikes significantly extends the lifespan of internal control boards. Keeping the installation area clean and dry also prevents moisture-related communication errors. Regular professional checkups help catch minor sensor issues before they cause system lockouts.

Install a dedicated heavy-duty surge protector for electronic water heater models.
Keep the surrounding utility area dry and free from excessive humidity.
Schedule annual professional maintenance to inspect electrical terminals and wiring.
Check ventilation and combustion air openings regularly to prevent overheating.
Review manufacturer support guidelines for any recommended firmware updates.

Frequently Asked Questions

Can error code 63 clear on its own without intervention?

In rare cases, temporary power fluctuations might cause a brief communication glitch that clears automatically. However, if error code 63 remains on the display and locks out hot water production, manual troubleshooting or a power reset is required to restore normal operation.

Is it safe to replace a Bradford White control board myself?

Replacing an internal electronic control board involves working with line-voltage electricity and sensitive wiring connections. For safety and to maintain warranty validity, component-level electrical repairs should always be performed by a licensed professional technician.

Does error code 63 mean my water heater tank is leaking?

No, error code 63 is strictly an electronic control and communication fault rather than a structural tank leak. A tank leak involves water pooling around the base of the appliance, which requires a completely different physical inspection and potential tank replacement.

What should I do if error code 63 returns immediately after a reset?

If the code returns instantly after cycling power, it usually indicates a permanent hardware failure in the control board or sensor harness. At this point, you should contact manufacturer support or a licensed service technician to inspect the internal electronic components.

Does my water heater warranty cover electronic control board failures?

Most Bradford White water heaters carry limited warranties that cover major electronic and tank components for a set number of years. You should check your specific purchase documentation, verify the serial number registration, and contact customer support to confirm active coverage details.

Bottom Line

Turn off the electrical breaker to your water heater and perform a simple power reset first. If error code 63 persists after restarting, contact a licensed technician for assistance.

Sources

Bradford White owner’s manual
Manufacturer support page
Authorized service technician guidelines