We turn on the beds an our or more before going to bed and in order to actually feel the heat when getting into bed, you must have a blanket over the bed. Otherwise you cannot feel that they are even heating up. The cover helps hold the heat in. It's easy to think they are not working unless you do this. The colder it gets outside the warmer they start to feel. I have no idea what the actual temp is that they are designed to heat to.
If you have a bed that is hot to the touch, I think that bed might be the one having an issue.
"Take The Road Less Traveled"
2013 Rockwood Roo 233s
2013 Ford F150 FX4
I've been an RVer since 2007, Lifetime Camper
Gotta love the Outdoors, Disconnect and Enjoy Nature!