F1 🟡 Repair Required
Bradford White Error Code F1: Sensor Fault
⚠️ The water heater has shut down due to a sensor fault. You will not have hot water until the issue is resolved.
How to Fix Bradford White Code F1
- Step 1: Reset the water heater by turning off the power at the breaker for 30 seconds, then turn it back on. This may clear a temporary fault.
- Step 2: Check the wiring connections on the outside of the unit for any obvious signs of damage or corrosion. Do not open the unit.
- Step 3: If the error persists after resetting, contact a qualified HVAC technician to diagnose and repair the problem.
What Does Bradford White Error Code F1 Mean?
The F1 error code on your Bradford White tankless water heater indicates a problem with one of the temperature sensors. These sensors are responsible for monitoring the water temperature at various points within the unit to ensure safe and efficient operation. The F1 code specifically points to a fault in either the inlet or outlet thermistor. When the control board detects an abnormal reading or a complete failure from one of these sensors, it shuts down the unit to prevent potential overheating or other damage. This is a safety feature to protect the unit and your home. Because the unit has locked out, you will not have hot water until the problem is resolved.
Common Causes of Bradford White Code F1
- Faulty inlet thermistor
- Faulty outlet thermistor
- Loose or corroded wiring connections to the thermistors or the main control board
- Defective main control board
Applicable Bradford White Models
Need a Pro to Fix Bradford White Code F1?
A licensed HVAC technician can diagnose and fix this issue quickly.
Find a Licensed Tech Near You →Replacement Parts for Bradford White HVAC System Code F1
Inlet Thermistor
Outlet Thermistor
Main Control Board