Managing interstate IPs

I've had a similar problem with a tenant who claims her hotplates are intermittently not getting hot. I called the electrician who went and checked and could find no problem with the hotplates. He told me he didnt' like to tell her that maybe she was not turning them all the way up occasionally as it may not be clear from the knobs where the high/low settings are. He was too embarrassed to tell her and left it to me which was hard as I had to do it over the phone with no idea about the settings! Oh dear, there are times when I wish I had a property manager to handle these situations. I do my own management except for one property.

PS the electrician did not charge me for the call as I use him alot. Perhaps a good maintenance person would be able to check for batteries in correct way etc. and not overcharge you if it is user error.