The night storage part of the above units (I have several all the same] doesn't work. Looking on internet there are suggestions of a reset button, a fusible link or a new thermostat. I look for a maintenance manual and the only one I can find is priced in dollars - at over $50. Nice work if you can get it.
Suggestions gratefully received.
A trouble shooting guide would be nice.

drg40, May 2011