Make a decision
Professional inspection versus homeowner observation
One scope
A homeowner can record noises, dates, fault lights and accessible filter condition without opening fuel components.
The other scope
A certified contractor can inspect, test and service fuel equipment within their qualification.
A concrete example
A homeowner's dated fault-light video can help the technician. It does not authorize the homeowner to test live gas or defeat a safety control.
Which question settles it?
Bring your observations to the appointment; do not turn a guide into a DIY gas procedure.