I have a portable AC unit on wheels. It's a DeLonghi AN series unit and only a few months old. My daughter uses it in her room and she had it off for a few days while we went out of town. Upon return she turned it on, it ran for a minute or so and shut off with a PF message which the documentation states is a "probe failure" meaning "probe damaged". DeLonghi will only fix it if we ship it on our dime to New Jersey. Any suggestions as to where to take it for repair?