Question about Honeywell Programmable Thermostat Heater
I hope you can help me.
I have a hard wired (no batteries), round type honeywell thermostat. Very basic type but only 4 years old. I have no a/c in the home, just forced air (gas) for heat.
The problem I have is the thermostat is not giving me any reading at all? Just a blank face (normally shows room temp). I have limited knowledge of working with furnaces but I did the following:
1) Reset the circuit breaker.
2) Pulled face off of thermostat and cleaned best I could.
3) Checked furnace for obvious signs of loose wires, dirty fan, clean filter,etc.
Its getting cold in here and I need heat, please let me know what else I can try before calling in a service tech.
You need to check the furnace itself for , locate the 24 volt ac transformer inside the unit and see if it is fused some are some not , check to see if you have 120 volt ac in from the source and 24 volt ac out , sounds to me as if you have lost the 24 volts ac which powers the thermostat as well as the furnace pay close attention as to how you remove the wires and make a diagram and you should be able to replace it yourself , once you get it uot goto a heating supply place in your area and let them match it up and this should be a fix ya
Posted on Dec 31, 2009
I have seen this often with the digital round thermostats, for some reason they tend to just die, in my opinion prematurely. To ensure that this is the case, take the face off the thermostat, and check voltage between your two wires, you should have approx. 24 volts. If not, then it is a problem at the furnace, or in the wire. If you do have the 24 volts, replace your thermostat. Hope this helps
Posted on Jul 11, 2009
Since you say it has a blank face it must be a digital thermostat. if the power is on to the furnace and the furnace door is on (door switch) and still does not give you a reading. You probably have a bad stat. if you are handy.... unhook the wires in the thermostat. jump the red and white wires together. the furnace should turn on. if it does the thermostat is bad. if it does not turn on its not the thermostat its the furnace
Posted on Mar 28, 2009
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Posted on Jan 02, 2017
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