d.61 Number of Lockouts - Boiler repeatedly fails to ignite

What does d.61 mean?

This diagnostic code displays how many times the boiler has entered a lockout state due to unsuccessful ignition attempts. A non-zero or increasing number signifies a persistent problem with the boiler starting.

• Repeated ignition failures, preventing the boiler from firing up
• No or insufficient gas supply to the boiler
• Faulty igniter or flame detection electrode
• Condensate drain blockage preventing safe operation

Click steps to track your progress.

1. 1

   Check if other gas appliances in your home (like a gas hob) are working to rule out a general gas supply issue.

2. 2

   Ensure the condensate drain pipe is clear and not blocked or frozen, as this can prevent the boiler from igniting.

3. 3

   Try resetting the boiler by pressing the reset button (if available) or by turning the power off and on at the fused spur.

4. 4

   If the boiler continues to lockout or fails to ignite, contact a qualified heating engineer to inspect the boiler and gas supply.