12-15-2023 06:30 AM
Help. My Nest Learning Thermostat is beeping each morning for 1 minute when it heats for the first time each morning. I have no c-wire but I fully charged the Nest before installing and according to my stats, 3.83 volts in battery LIN is above 20. According to videos I’ve watched, this isn’t a low battery issue, since it only does it once a day. Thoughts?
12-18-2023 12:25 PM
Hi Xa,
Yikes! I'm sorry to hear that your Nest Learning Thermostat is beeping for one minute each morning when it heats for the first time, though you've already ensured that the battery is sufficiently charged.
Beeping during heating can indicate power loss or voltage drop, as the thermostat may draw more power than the battery can supply. This can occur if the HVAC system draws more power than the battery can supply. Additionally, some HVAC systems require a C-wire for proper power supply to the thermostat, which can lead to intermittent beeping if the thermostat relies on insufficient battery power. Despite the battery's adequate charge, power demands during heating may exceed its capacity. Here are a few potential solutions:
Remember, working with electrical systems can be hazardous, so it's essential to be cautious and seek professional help if needed for safe installation and troubleshooting processes.
Let us know if that helps.
Best,
Zoe