Hoping someone can help, as it's now 52 degrees in my house and I've had to make fingerless gloves out of holey socks!!
We have a LUX TX 9000TS programmable thermostat which we installed ourselves about 3 years ago. Never had a problem with it and now suddenly it won't work! The replace battery indicator came on so we replaced the batteries and the furnace wouldn't come on. So we put another set of batteries in. Same problem. Over the past week I've gotten the furnace to sometimes come on by variously doing a hardware or software reset of the thermostat, taking the body off the wall and putting it back on the base, setting the temp manually below the room temp (until you hear the "click") then setting it back up where it should be, performing voodoo rituals, etc. But last night it stopped working and will not come on no matter what I do.
I've called the company's technical assistance line but haven't heard back from them. I've also done web searches and have found that others have also had this problem after replacing the batteries on this model but have found no solutions.
Any ideas, DYI gurus?? Should I just give up and go buy a new thermostat?