https://www.googlenestcommunity.com/t5/Nest-Thermostats/E103-Y1-code-AC-not-working/m-p/484025#M104589 <P>Having the same issue as of yesterday&nbsp;</P> Sun, 24 Sep 2023 09:52:47 GMT Kristine715 2023-09-24T09:52:47Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/E103-Y1-code-AC-not-working/m-p/483840#M104555 <P>AC turns on but shuts off within a few seconds. Nest gives code 103/Y1&nbsp;</P><P>What do I need to do? It worked fine until yesterday.&nbsp;</P> Sat, 23 Sep 2023 19:42:24 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/E103-Y1-code-AC-not-working/m-p/483840#M104555 Spanky1 2023-09-23T19:42:24Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/E103-Y1-code-AC-not-working/m-p/484025#M104589 <P>Having the same issue as of yesterday&nbsp;</P> Sun, 24 Sep 2023 09:52:47 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/E103-Y1-code-AC-not-working/m-p/484025#M104589 Kristine715 2023-09-24T09:52:47Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/E103-Y1-code-AC-not-working/m-p/484944#M104811 <P>Hi folks,</P> <P>&nbsp;</P> <P>Thanks for reaching out. E103 code means that there's&nbsp;too much power that flows through&nbsp;your Nest Thermostat. Overcurrent and overvoltage are two terms that describe similar problems. Overcurrent happens when the amperage traveling through the thermostat base exceeds its design limits (which could be caused by either voltage or resistance), and overvoltage happens when the voltage traveling through the thermostat base exceeds its design limits.</P> <P>&nbsp;</P> <P>Could you please provide your thermostat's power readings? You can find it under technical info. Also, in what country are you located?&nbsp;</P> <P>&nbsp;</P> <P>Best,</P> <P>Jenelyn</P> Tue, 26 Sep 2023 22:15:31 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/E103-Y1-code-AC-not-working/m-p/484944#M104811 Jenelyn_O 2023-09-26T22:15:31Z