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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 'E188'. Do you need help straight away? Visit our support page.
The Google documentation indicates that error code 'E188' is caused by the following problem: "The Nest thermostat has an overcurrent error".
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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.
One of the most common errors that you might encounter when you try to use Google's services is Google E188 error. This error occurs when you try to access your thermostat or when you try to log into your account. This error can be annoying and frustrating because you cannot access the services properly.
The problem can be caused by an issue with your device system. If the system is in trouble, then it is possible to stop sending power to the thermostat. Another possible reason is that you live at a very high or low temperature place so this code appears. To fix this error, you need to try a few solutions.
The Google E188 Error usually happens on Nest Thermostat E and Nest Learning Thermostat. It occurs because there is a miswiring on your thermostat, there is more than one wire on the thermostat connector, or there were recent issues or upgrades made to your home’s electrical system.
The first thing you can do is to restart your thermostat. If you have Nest Thermostat E and 3rd Gen of Nest Learning Thermostat, you can do it by pressing the ring and holding it down until the screen turns off. You can let go of the ring and the Nest Logo will appear when it begins to start up. The screen will turn on as it finishes. If you have a 2nd Gen of Nest Learning Thermostat you need to press the ring and hold it down until the screen turns off. You can let go of the ring. Then, you need to press and release the ring to turn it back on and complete the restart process. The Nest logo will appear when it begins to start up. The screen will turn on as it finishes.
You can check your wire. If the E188 error code appears, it means you need to check * or */OB wire on your thermostat. Make sure you turn off the power system on your thermostat before checking the wire. Check that there is only one wire in the connector and the right wire is in the right connector.
If you do not understand about the wire and the steps, you can find HVAC professionals in your area and directly tell him or her about your device’s problems. They can also help you to check and install the nest power connector or wire to your device.