Hi folks,
Yikes! Let me take a look at this for you.
@Mooihoek and @vkarolyn13, a few questions:
- Are you located in North America or Europe?
- What Nest products do you have?
- What type of Nest Thermostat do you have?
- What type of Nest Camera do you have?
- What type of Nest Protect do you have?
- How many Nest devices are offline?
- Has the device ever been connected to their Wi-Fi network before?
- Are other non-Nest devices in the home offline?
- Can the device find or detect other networks?
- Has there been any recent change in the home Wi-Fi network?
- Is the Wi-Fi router or access point within a reasonable range (1 to 15 meters) of between three to fifty feet from the Nest devices?
@Darius123456, E195 code means no power to R is detected by your Nest Thermostat E. Follow these steps:
- Make sure breakers are on.
- If you used AC recently, check your system’s drip pan or drain tubes (skip this step if you only have a heating system)
- Check the condition of the HVAC fuse.
- Check if you have an energy savings box. Some utility companies install boxes that cut off the power during high-demand (peak) times. These energy savings boxes can cause the error.
- Check if there’s an energy savings box in your house.
- Search for an energy savings box near the electric meter (possibly near their air conditioner).
- Search for a small box with 2 lights on it (one light is red, the other is usually green). This box allows the utility company to cycle your air conditioner off and on during certain peak times of the day.
- If you have an energy savings box:
- Wait an hour or two for the rush hour to end, and then check if the code disappears.
- If the code disappears, contact their utility company, landlord, and/or Homeowners Association (HOA) for details about the program and your home's participation in it.
- If you don’t have an energy savings box, proceed to the next step.
- Check if the issue relates to the initial installation.
- When was the thermostat installed?
- Who installed the thermostat?
- Do you use a single-wire or double-wire transformer?
- Check your air filter. Your HVAC system needs to have a good airflow to work properly. A clog in the air filter can limit how much air flows over the cooling coils. If the clog persists, the cooling coils can freeze and cause the customer’s system to shut off.
- Find your HVAC system’s air filter. The air filter is usually behind a grate in the hallway.
- Check your walls and ceiling.
- If you can’t find the air filter, search for it inside the furnace near the fan.
- If the air filter seems dirty or there seems to be a clog, replace the filter with a new one. If the issue is because of frozen cooling coils, you need to wait a while for the HVAC system to thaw before you can use it again.
- Gather the power readouts from the thermostat.
- For Nest Learning Thermostat and Nest Thermostat E, go to Settings > Technical Info > Power and list down its Battery, VOC, VIN, and lIN.
- For Nest Thermostat 2020, go to Settings > Equipmet > Power info and list down its VIN, IIN, and PS-*.
- If the power reading is VIN/VOC/IIN : N/A, or 0.01 or less, check the emergency switch. The emergency switch isn’t the same as the breakers on the fuse box. It’s a breaker right next to the furnace or boiler and might be a light switch, breaker, or T switch. If anything went wrong electrically, like a power outage, this breaker probably switched off. Turn it off, then back on. If it’s a T switch, they need to unplug it, then plug it back in.
- Make sure the thermostat wires are properly stripped and seated in the thermostat base.
- If there’s a common wire connected in the C terminal, remove it.
Keep us posted. We're happy to help.
Best,
Zoe
