My thermostat won't tell the furnace to turn on. I have to turn down the temperature then turn it up again in order for the furnace to kick on..

Have a Honeywell simple digital non-programmable thermostat. The AC is fine. When I switch from AC to "off" or "heat" position, the display goes blank. The heat does not come on, but the blower will if I switch it from "auto" to "on" obviously blowing cold air. This is an all in one (gas heat...

I just had my old gas boiler replaced with a new Peerless unit. The installer told me that my programmable thermostat from the previous boiler won't work because it won't open the automatic chimney damper on the new boiler. He installed an older type dial thermostat and the boiler works just...

Yesterday morning I noticed that the thermostat was blank. I assured it had gone bad. I replaced it but the AC still would not come on. I went downstairs and the furnace was making a buzzing noice. I took the cover off and replaced a small fuse but still nothing. Help please