Bradford White Error Code F10: Thermistor Short
Warning: The water heater has shut down due to a potential sensor issue. You will likely have no hot water. Professional service is recommended.
How to Fix Bradford White Code F10
- Step 1: Turn the water heater off and back on again. This might reset the control and clear a temporary error. Wait a few minutes to see if the error returns.
- Step 2: Check the wiring around the water heater for any obvious damage or loose connections. Do not open the unit. Look for anything visibly disconnected.
- Step 3: If the error persists after resetting, contact a qualified HVAC technician to diagnose and repair the issue.
How to Reset Bradford White Code F10
- Turn off the unit using the power button on the front panel.
- Turn off the gas supply valve.
- Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
- Restore power at the breaker, then open the gas valve.
- Turn the unit back on. If the error returns, the underlying issue needs repair.
What does F10 mean?
The F10 error code on your Bradford White tankless water heater indicates a short circuit in one of the thermistors. A thermistor is a type of resistor that changes its resistance with temperature. Your water heater uses thermistors to monitor the water temperature at various points in the system to ensure safe and efficient operation. When the control board detects a short, it shuts down the unit to prevent potential damage or overheating. This isn't necessarily dangerous in the short term, but it does mean your water heater won't operate until the problem is resolved.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Thermistor | — | — |
| Wiring Harness | — | — |
| Control Board | — | — |