F.61 — Fault: Gas valve regulation

What does F.61 mean?

The boiler's gas valve regulation system is faulty. This means the boiler cannot correctly control the flow of gas, which is essential for safe operation.

• Short circuit or short to earth in the cable harness for the gas valve.
• Gas valve itself is defective (e.g., coils shorted to earth).
• Main electronics of the boiler are defective.

Click steps to track your progress.

1. 1

   Press the fault clearance key on the boiler to reset it.

2. 2

   Listen for any unusual sounds coming from the gas valve area when the boiler attempts to operate.

3. 3

   If the fault persists, contact Vaillant Service Solutions immediately, as this is a critical gas system fault.