Vaillant F64 Fault Code Work

Wait, the user specified to keep names intact. So "Vaillant", "F64", and "It" should stay as they are. Then, each other word should be replaced with three options. Let me go through the text step by step.

Replace the NTC Sensor: If the NTC sensor is faulty, it may need to be replaced. vaillant f64 fault code

Indications of the Vaillant fault code Fault Code: Wait, the user specified to keep names intact

"triggering the F64 code" → "causing|initiating|activating the F64 error|fault|code" vaillant f64 fault code