Onkar Sharma
Member
Hi all,
Yesterday I went to install the Nest thermostat on my furnace and now I am completely puzzled. The events unfolded like this:
1. Nest wiring and back plate installed. Power turned back on. Checked for voltage across:
C and Y- 24V
C and G- 24 V
C and Rh- 1.9 V
2. Put Nest cover on. It did not boot up. Called customer service. Finally realized there was no power in the C-wire.
3. Funny thing is: There was a blue wire in the C-wire port at the thermostat. Went down to the furnace to check and did not find the blue wire hooked onto C. So why was I getting the voltage initially?
4. Checked voltage at the furnace, there was no voltage across the C-wire and Y-wire now.
The new voltages are:
Rh and Y- 24V
Rh and G- 24 V
C and Rh- 24 V
C and Y- 0V
C and G- 0 V
5. The nest is now running without the C-wire hooked on. However, this is not a desirable situation.
The furnace is still working for now.
Nest is going to pay for someone to come and have a look and potentially install a C-wire. I am just scratching my head. What is going on?
Yesterday I went to install the Nest thermostat on my furnace and now I am completely puzzled. The events unfolded like this:
1. Nest wiring and back plate installed. Power turned back on. Checked for voltage across:
C and Y- 24V
C and G- 24 V
C and Rh- 1.9 V
2. Put Nest cover on. It did not boot up. Called customer service. Finally realized there was no power in the C-wire.
3. Funny thing is: There was a blue wire in the C-wire port at the thermostat. Went down to the furnace to check and did not find the blue wire hooked onto C. So why was I getting the voltage initially?
4. Checked voltage at the furnace, there was no voltage across the C-wire and Y-wire now.
The new voltages are:
Rh and Y- 24V
Rh and G- 24 V
C and Rh- 24 V
C and Y- 0V
C and G- 0 V
5. The nest is now running without the C-wire hooked on. However, this is not a desirable situation.
The furnace is still working for now.
Nest is going to pay for someone to come and have a look and potentially install a C-wire. I am just scratching my head. What is going on?