If the batteries are more than 6 months old replace them. Loose 24v connection.
Trc650 Wireless Thermostat User Manual 03 Thm405r 52 0546
Thermostat low battery troubleshooting. Connect compressor wire to y and fan wire to g. The c wire is common for 24 volt ac operation. Check that you can get online with another device in your home. How to troubleshoot batt lo wont reset on a honeywell programmable thermostat. Tighten any loose screw terminals. System switch on thermostat in wrong position.
Make sure your home wi fi is working. Troubleshoot when your nest thermostat is offline. At fumaceair conditioner incorrect wiring. Turn on your thermostat. If the battery contacts inside the thermostat are dirty clean them with a lint free cloth. Make sure the positive and.
Look for and address simple reasons why the thermostat isnt getting power such as dead batteries or a tripped breaker or blown fuse in your main electrical service panel. Follow these steps if your nest thermostat has been previously connected to your wi fi network. Connect the reversing valve wire to 0 or b just as the previous thermostat. Grip the face plate of the thermostat and pull it away from the wall plate to expose the batteries. Thermostat minimum off times operating for cooling. This is often the first step in troubleshooting since it allows homeowners to rule out dead or dying batteries as the source of any issues before calling a technician.
If youre using a cell phone turn on. Dirty contacts can cause short circuits. If it is not the thermostat cannot signal the air conditioner to cycle on. Check whether the thermostats display is lit. Do not connect wires to both 0 and b. It is important to check the batteries or change them every few months or at any time if the thermostat seems to be operating ineffectively.
Pull out the three aaa batteries. Insert two new aa alkaline batteries and replace the cover. Open the battery compartment on the side of the thermostat and remove the old batteries. Check appropriate wiring diagram. While most programmable thermostats will give you a low battery signal some may not. Connect 24 vac wire to rh and leave in the factory supplied jumper wire between rh and rc.
Set the thermostat to its highest setting and clean the coil again. Then reset the thermostat to its desired setting. Put in three fresh aaa batteries. Set the thermostat to its lowest setting and clean the bimetallic coil with a soft brush or compressed air. If your thermostat is not controlling the heat and air conditioning based on the settings you have programmed the batteries may be getting low.