Nest Thermostat Says No Power To Rh Wire - Do you see on your thermostat nest a message “no power to rh wire” or the e74 error? In my case this was caused by a clogged drain line. Using a wet dry vac to clear out the lines resolved it. This video shows how i fixed an error with my nest thermostat. Remove rh and g and connect them together with a wire nut or simply twisting together. It doesn't have to be a very good connection, it just has to be a connection. We have looked through these problems and found that a good number of nest thermostat users have encountered a problem that said the nest thermostat has no power to. Essentially, something is most likely happening that causes the power to your thermostat to be cut entirely. Even if this is only temporary, there can be detrimental effects. Luckily, this is easy to fix—in most cases—and should resolve your nest thermostat’s rc terminal power loss problem. Please note that for power loss problems not. There must be an issue at your furnace / indoor air handler control board.
Do you see on your thermostat nest a message “no power to rh wire” or the e74 error? In my case this was caused by a clogged drain line. Using a wet dry vac to clear out the lines resolved it. This video shows how i fixed an error with my nest thermostat. Remove rh and g and connect them together with a wire nut or simply twisting together. It doesn't have to be a very good connection, it just has to be a connection. We have looked through these problems and found that a good number of nest thermostat users have encountered a problem that said the nest thermostat has no power to.