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Ricky Main
Ricky Main,
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I have a nest and am getting the e73 error saying no power

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Hi i have a nest and am getting the e73 error saying no power to the rh wire
JA: How old is the appliance? Have you gotten error messages before?
Customer: had it installed a few months ago, was working fine, havent gotten this error before. got a baby at home, trying to keep her cool
JA: Do you plan on doing the work yourself?
Customer: I'll probably call for help, but didnt know if there was anything i could do
JA: Anything else we should know to help you best?
Customer: not that i can think of
Customer: replied 1 month ago.
https://nest.com/support/#troubleshooting/E73/
Hi my name is Ricky
If you look at how it is wired does it have the jumper between RC and RH?
Customer: replied 1 month ago.
Here is what it looks like.
Ok so your air handler is not supplying power to the Nest. Is your unit in attic or closet?
Customer: replied 1 month ago.
it's in a closet upstairs, I am able to access it if that would be helpful.
can you tell if it has a float switch by drain?
or maybe under unit
Customer: replied 1 month ago.
Outside
Customer: replied 1 month ago.
Inside
Customer: replied 1 month ago.
Another
you see the white thing in the drain with black wires?
Customer: replied 1 month ago.
Customer: replied 1 month ago.
This?
pull it out and see if there is water in line
Customer: replied 1 month ago.
there is!
ok thats what has it off. Does your drain pipe come outside a wall outside?
Customer: replied 1 month ago.
it does I believe, in my back yard I think
Do you have a shop vac?
Customer: replied 1 month ago.
No I don't....
you can try to blowing into it to try and unstop it.
from outside
Customer: replied 1 month ago.
Which end? The one by the AC filled w water? Or outside?
Customer: replied 1 month ago.
Okay, blow upward?
Customer: replied 1 month ago.
Should I go out and get a cheap shopvac?
Customer: replied 1 month ago.
Or worth trying?
you can try blowing from outside to see if you can break it loose. If it is to stopped up you may have to get shop vac
Customer: replied 1 month ago.
K how will I know if I got it loosened?
you will feel it blow through and a lot of water will pour out
Customer: replied 1 month ago.
I blew his heart is I think I can and nothing came out
Customer: replied 1 month ago.
As hard as I think I can.
May have to get shop vac to try and suck it out.
Customer: replied 1 month ago.
Are you 100% sure that's the cause of the error? And 2nd, what causes this to happens
Customer: replied 1 month ago.
My father-in-law has a shop vac I can borrow. How do I do it to fix it?
Customer: replied 1 month ago.
I'm running over to his house right now to get it.
It is just gunk that stops up your drain. It grows in the line because it always has water and no sunlight. In the future you can pour a little bleach down that plug the is in your other drain line to prevent it. Yes I am sure it will fix it. The line with float switch in it should not have any water in it.
Customer: replied 1 month ago.
basically the system shuts it off because he doesn't want electrocution to happen, is that right?
Just put shop vac hose over drain pipe, shove a rag to plug rest of hose around the pipe and turn it on.
No if you didnt have drain switch it would have kept running and flooded your house
Customer: replied 1 month ago.
Oooooooh
But you would still be cool lol
Customer: replied 1 month ago.
When I turn it on do I need to turn off breakers? And will it spray in the areas where the unit is?
Customer: replied 1 month ago.
Hahaha
No if you were blowing it out with high pressure it could blow it all over your closet but since your sucking it out you will be ok. Yes you can turn off breakers until you get your drain unstopped.
Customer: replied 1 month ago.
Okay will do.
Please leave good ratings for me if you feel like I have given you good support.
Thanks
Customer: replied 1 month ago.
Of course I will Ricky. You've been fantastic.
Thanks
Ricky Main and other HVAC Specialists are ready to help you
Customer: replied 1 month ago.
I set up the shop vac and I use duct tape to put it on the pipe. But it still hasn't loosened the clog yet
Customer: replied 1 month ago.
Any idea what else to do? The water is still in there.
Customer: replied 1 month ago.
Here it is
Customer: replied 1 month ago.
Am I doing it right?
Customer: replied 1 month ago.
Im still trying to do this
I'm so sorry I cut my phone off and went to bed. I thought you had to get shop vac this morning. Did you ever get it cleared out?