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Ask Douglas Your Own Question
Douglas, HVAC Technician
Category: HVAC
Satisfied Customers: 3089
Experience:  Manufacture Rep for Major Brand, Technical Trainer, NATE
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My new Lux thermostat keeps blinking heat and fan

Customer Question

My new Lux thermostat keeps blinking heat and fan
Submitted: 6 years ago.
Category: HVAC
Expert:  Douglas replied 6 years ago.
Hi, I'm Douglas and I am here to help you resolve problems with your heating and cooling equipment.

One moment while I look up your thermostat
Customer: replied 6 years ago.
I can't get the furnace to come on. I have three seperate zones in my house. The other two zones work. What could the problem be?
Expert:  Douglas replied 6 years ago.
Is the dial in the run position?
Customer: replied 6 years ago.
Expert:  Douglas replied 6 years ago.
Remove the thermostat from the back plate and remove the batteries for 30 seconds. Re-install the batteries and place the thermostat back on the wall... lets see what happens.
Expert:  Douglas replied 6 years ago.
On the circuit board, just by the batteries you will see a little reset button, you can press that with the batteries in place.
Expert:  Douglas replied 6 years ago.
That button is a hardware reset.

You may need to reset the software too. Just above the next button is a small recessed button. You will need to push it with a paperclip or somethig small.
Expert:  Douglas replied 6 years ago.
If none of those work, if the other thermostats are the same, you can swap the thermostats to see that the problem follows the thermostat. If it does, it's probably time for a replacement thermostat. If not and the problem stays with the zone, it would indicate a problem with that particular zone hardware rather than the thermostat.

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