Boiler shows E13 and locks out; may indicate internal control fault or EEPROM error.

Safety first: Turn off power before accessing the control compartment.

• Step 1 – Power reset: Turn off power to the boiler for at least 5 minutes to allow the control to fully discharge. Restore power and check if E13 clears.
• Step 2 – Check dip switches / jumpers: Compare the control’s dip switch or jumper settings to the installation manual for your specific Bradford White boiler model. Correct any misconfigurations.
• Step 3 – Inspect for surge damage: Look for burn marks, swollen components, or a burnt smell on the control board. If present, the board must be replaced.
• Step 4 – Parameter reset (if available): Some controls allow restoring factory defaults through a button sequence. Follow the manual carefully; incorrect settings can affect safety.
• Step 5 – Replace control board: If E13 persists after resets and configuration checks, the integrated control board is likely defective and should be replaced by a qualified technician.

Note: Consider adding surge protection to the boiler’s power supply to prevent future control damage.