Simple Comfort 2001 Thermostat Not Working

When it comes on the heat work fine but it seems to go off a lot almost like the battery is dead but i cant seem to find a battery.
Simple comfort 2001 thermostat not working. Woke up this morning and the lcd display on the thermostat is blank a c wont come on. I m trying to figure out why there is a jumper between the y and w. We cover how the thermostat works the color code what to lo.
As with all electronic or mechanical equipment the thermostat will work worse the older it gets. Rather buy a new one and be done. I noticed that the thermostat will be on heat with the temperature set at 73 but will not be on and the temperature of the house registering at 69.
Air conditioning and cooling systems problem with simple comfort 2001 thermostat found that one of the kids has been hiding a door key inside the thermostat device that s right a piece of metal. I have a simple comfort 2001 thermostat that isnt working and i need help. Simple comfort 2001 thermostat on and off when it comes to the fine hot work but seems to be going well almost like the battery is empty but i can not find a battery.
It was working fine until today when the temperature reading was at 90. I changed the batteries thinking it may be the problem now the display shows diff 03 and it won t turn back on. Removed cover pressed reset button checked wire connections all snug didn 39 t see a battery to replace.
According to the sc 2001 manual. Thermostat shows blank display simple comfort 2001. You ll just end up periodically replacing something or the other.
I have a simple comfort 2001 thermostat that isnt working and i need help. Page 1 sc 2001 manual changeover non programmable hardwired non programmable electronic thermostat controls single stage heating cooling systems single stage heat pump systems compatible with gas oil or electric systems 30 minute power loss memory retention for use with 24 vac systems installation operation application guide for more information on our complete range of. Y is cooling control w is heating control.