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Google Nest error E194

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Last updated on December 10, 2021
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Google Nest is a smart home automation system which can connect your phone to internet using wifi connection through IOS or Android device using Bluetooth connectivity using android version of Google app or ios version of IOS apps which can make a combination between all devices through Wifi connection using internet connection from your mobile phone or tablet.

Google Nest is exactly this smart home automation system for android devices only like android mobile phones and tablets, Apple iphone and ipad devices also supported with IOS version of IOS app.

 

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On this page, you will find more information about the most common causes and most relevant solutions for the Nest error 'E194'. Do you need help straight away? Visit our support page.

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Error information
  • Category
    Heating
  • Error code
    E194
  • Product
    Nest
  • Developer
    Google
  • First seen
    September 5, 2021
  • Verified
    Yes
JustAnswer
JustAnswer
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What causes the E194 error?

The Google documentation indicates that error code 'E194' is caused by the following problem: "R wire not detected".

Do you think there is another cause for this error? Let others know in the comments.

How to solve Google Nest error E194

We've created a list of solutions which you can follow if you want to solve this Nest problem yourself. Do you need more help? Visit our support page if you need professional support with Nest right away.

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Verified solution

Google Nest is a smart thermostat that integrates with your Wi-Fi network to control your home's temperature using a mobile app, website, or voice commands. One of the most common errors is Google Nest Error Code (e194).

First, this error is an E type which means E codes are critical and must be fixed as soon as possible. Your thermostat won’t allow you to control heating or cooling, and the message won’t go away until the cause has been fixed. Which Error code e194 means to fix R wire because the R wire is not detected

To fix this error, you need to try a few solutions.

You have to fix the R wire with these 2 steps, first is to Check the system power, make sure the power to your system is on. The power switch will usually be in your breaker box or fuse box, but in some homes it will look like a light switch near the heating or cooling equipment.

There may be a single switch, or two switches: one for heating and one for cooling. Make sure the power is on for both then check your thermostat. After you check the power, go to your thermostat and check if it’s working.

Second way to fix your problem is to check the thermostat wires, and check that your system’s wires are in the right connectors.

Check if your thermostat is working. If it still doesn’t work, check that your system wires are connected to the right connectors. Use the wiring diagram the app gave you during setup to move the wires to the right connectors.

Turn power to your system back on at the breaker or fuse box. If you’ve completed all the troubleshooting steps above and your thermostat still isn’t working correctly, contact a local pro for more help or contact the customer help Google Nest.

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