What are the drawbacks of using manual setting when in room temp mode? Because the fire never goes out, simply slows down, does that consume more pellets or is there some heating benefit/ trade off vs shutting down completely in between auto ignite stars? Is there a concern that the combustion blower running constantly will have a shorter life span? Wouldn't the only reason to use the manual setting would be to extend the igniter life or if the igniter has already failed or wanting to lessen electrical current should you be using a portable generator during a power failure?