Activating Room Sensors - Installation & Trouble-shooting

ecobee3 and ecobee3 lite uses multiple temperature readings from room sensors to deliver comfort more reliably. They can support up to 32 room sensors. Each sensors provide occupancy & temperature sensing.

To activate the room sensor stand in front of your ecobee and pull the plastic tab on the room sensor to automatically pair it with the thermostat. Each sensor will have a unique 4-digit pin code that will be displayed on the thermostat when accepting the pairing. Follow the prompts to name your sensor and establish your preferred options:

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  • Smart Home/Away: If ecobee senses that you are home during your scheduled Away period, or away during your scheduled Home period, it will automatically override your schedule to maximize comfort and savings.

 

  • Follow Me: Control your comfort by averaging the temperature of the selected sensors that detect motion (Enabled) or all of the selected sensors in your home (Disabled).

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Room Sensors – About 

The wireless room sensors use 915MHz frequency band to communicate with your ecobee. You do not need Wi-Fi connectivity for communication between wireless room sensors and the ecobee. Furthermore, the communication between the wireless sensor and ecobee is encrypted and one way (sensor provides information to ecobee). Both the ecobee3 and ecobee3 lite can support up to 32 wireless room sensors. The wireless room sensors can communicate with the thermostat when placed at a distance of up to 45 feet. This distance includes any walls and floors that may exist between the wireless room sensor and the thermostat. The sensor viewing angle is approximately 120 degrees horizontal and 25-30 degrees vertical.  The wireless room sensors use a coin cell battery (CR2032). The battery has a life of about 12 to 24 months. Temperature and occupancy readings from the wireless room sensors are displayed on the ecobee thermostat. To check the data being reported by room sensors, please go to Menu à Sensors and scroll down to see the sensor data. Sensor data is reported as Temperature (Occupancy).

 

Understanding how Smart Home/Away and Follow Me works?

Smart Home/Away

  • Smart Home/Away is a feature that applies all the sensors in your network – including the sensors in your thermostat. Smart Home/Away will work by following your schedule unless any sensor in your network is in conflict with your schedule. In other words, if your ecobee senses that you are home during a scheduled Away period, or away during a scheduled Home period, it will automatically override your schedule by placing you in Smart Home/Away mode to maximize comfort (Smart Home) and savings (Smart Away)
  • You can configure Smart Home/Away by navigating to the Main-Menu à Sensors à Smart Home/Away (Enable / Disable). Enabling Smart Home/Away will use your network of sensors and thermostat to detect occupancy. Disabling Smart Home/Away will keep strictly to your schedule.

Follow Me

  • Follow Me is a feature that applies to a subset of the sensors in your network – including the sensor in your thermostat. You pick and choose which sensors you want to participate in Follow Me by navigating to the Main-Menu à Sensors à Follow Me and selecting the check-boxes in the list of paired sensors.
  • When Follow Me is enabled, your ecobee will look for motion triggered in any of the sensors that you selected in your network. If a sensor in the selected list detects motion, the temperature reading from that sensor will be used by your ecobee to decide when to operate your heating or cooling system. In that way, your ecobee ensures that you are comfortable in the rooms that you are occupying. If more than one sensor detects motion, the average of these sensors will be used. Your ecobee makes changes gradually when many sensors are detecting motion to make sure there are no sudden and large changes for your heating and cooling system.
  • When Follow Me is disabled, your ecobee will continuously use the average temperature readings from all the sensors that you’ve selected as the desired temperature to control your ecobee. So say for example you have a room in your house that is far from your thermostat, but you want this room to be at the right temperature, regardless if motion is occurring. Simply set Follow Me to Disable and only select this room. Your ecobee will then only use the temperature in this room to decide when to operate your heating or cooling system.

 

Understanding how Smart Home/Away and Follow Me work during Sleep period when no motion detected?

  • Smart Home/Away feature does not activate during Sleep period. Smart Home/Away activates during Home and Away periods based on occupancy detection.
  • In the Sleep period when no motion is detected, Follow Me defaults to averaging temperature across the selected sensors in your network. However, if any motion is detected, Follow Me will use this information to heat/cool appropriate rooms

 

 

What does “Home and Holding” or “Away and Holding” mean?

If “Smart Home/Away” is enabled, ecobee3 and wireless room sensors will use the built-in occupancy sensors to determine if anyone is home or if everyone is away. If, according to your schedule you are in a “home” period but your home is actually unoccupied, ecobee3 and wireless room sensors will recognize this and make adjustments so you’re not unnecessarily heating or cooling an empty home. Similarly, if you or a family member returns home during a scheduled “away” period, ecobee3 and wireless room sensors will adjust to start heating or cooling your home to your desired temperature.

  • When your ecobee is using “Smart Home”, the thermostat will display “(Smart Home icon) and Holding” on the screen and mobile app.
  • When your ecobee is using “Smart Away”, the thermostat will display “(Smart Away icon) and Holding” on the screen and mobile app.

Your ecobee will also display “(Home icon) and Holding”, and “(Away icon) and Holding” if you go to Quick Changes Menu and select “Home for now” or “Away for now” on the thermostat, or on the mobile app “Until I change it, I am” and “Home” or “Away”.

Please note, that the ecobee3 lite doesn't have a built in motion sensor. Only the original ecobee3 has the built in motion sensor.

 

Room Sensors – Trouble-shooting

 Room sensor installation issue: I tried pulling the tab but the sensor was not shown on the thermostat

 

A. Check that the thermostat is not in idle screen (ask user to touch the screen if necessary)

B. Remove the back cover from the room sensor and then remove the battery. Wait for 5 mins

  1. Re-insert the battery; Ensure that the thermostat is on the home screen and check if they get the room sensor pairing message pop up.

D. If the room sensor still does not pair, try the following: 

  1. Remove back cover
  2. Remove battery
  3. Insert the battery upside down (i.e +ve at the bottom)
  4. Wait for 20 seconds
  5. Remove the battery and insert it correctly (+ve side up)
  6. Ensure that the thermostat is on the home screen

 

Controlling temperature with multiple sensors 

With multiple sensors enabled your ecobee uses complex control algorithms to intelligently and gradually weigh-in the sensor that has detected Occupancy via infrared heat signature. When multiple sensors are active your ecobee will average these various temperatures and display it on the ecobee Home screen. It is this temperature the ecobee will use to compare actual temperature vs. desired set-point. When a sensor no longer detects occupancy the ecobee will gradually weigh-out the sensor from the calculation of set-point.

 

Understanding Smart Home/Away behavior

  • Smart Home can only apply during Smart Away or Away periods.
  • Smart Away can only apply during Home or Smart Home periods.
  • Smart Away does not require the use of an Away activity anywhere on the schedule. I.e., the default e3 schedule should be able to go into Smart Away even though it does not have an Away period. 

 

Sensors are showing NA (NA) for temperature and occupancy OR there is an alert that says sensors have lost communication with the thermostat. 

A.This can happen if sensors are not communicating with the thermostat. To re-establish the connection, follow the steps below:

  • If there is an alert on the thermostat and this is the first time you have paired sensors, then move the sensor closer to the thermostat and check if the communication is restored
  • If the sensor had been previously communicating and reporting temperature/occupancy data then:
  1. Remove back cover from the sensor
  2. Remove the battery
  3. Wait for 5 mins
  4. Reinsert the battery
  5. Wait for 5 mins
  6. Check that the temperature/occupancy data has been updated 

B. If the above step does not help do the following:

  1. Remove back cover from the sensor
  2. Remove the battery
  3. Insert the battery upside down (+ve at the bottom)
  4. Wait for 20s
  5. Remove the battery and insert it correctly (+ve side up)
  6. Wait for 5 mins
  7. Check that the temperature / occupancy data has been updated 

C. If above step does not work then do the following

  1. Remove back cover from the sensor
  2. Remove the battery
  3. At the thermostat Go to Menu -> Sensors
  4. Select the sensor that has the issue
  5. Delete the sensor by clicking on X at the top right corner
  6. Come back to the home screen
  7. Insert the battery into the room sensor
  8. Check if the pop up to pair the sensor comes up and pair the sensor
  9. Wait for 5 mins
  10. Check if the data is now showing in the sensors menu 

 

Room Sensors and/or the ecobee Thermostat are reporting incorrect temperature.

The room sensors are calibrated from the factory and do not provide any temperature correction options. The ecobee thermostat does however provide this capability using the Temperature Correction Setting. This can be adjusted +/- 10F in 1/2F increments. When trouble-shooting a reported temp reading issue always verify that the devices are not in direct sunlight, in the path of a supply air vents, subject to air currents/drafts or situated on a hot/cold wall. Due to the wide range of construction and building types inside wall cavities are going to be hotter (during summer) and colder (during winter). ecobee3 and ecobee3 lite has internal gaskets to help manage airflow through the thermostat however because the thermostat mounts to the wall with a drywall penetration behind the thermostat sub-base for accommodating the t-stat wiring the unconditioned air may infiltrate the thermostat chassis depending on levels of positive/negative air pressure. If  this unconditioned air infiltrates the thermostat chassis it may effect sensor readings and as a result could cause the cooling/heating to run longer than normal. Temperature readings on the ecobee will change too quickly after the HVAC system has completed a runtime cycle.