Setting the Current HVAC and Fan Mode Settings
Learn how to configure the current climate settings on a thermostat.
You can use the following Seam API "imperative" endpoints to set the current HVAC and fan mode settings for a connected thermostat, individually:
Note that it's important to check the capabilities of a thermostat before attempting to use an imperative endpoint. For example, if a thermostat is attached to an HVAC system that does not have cooling capabilities, you cannot use /thermostats/cool
or /thermostats/heat_cool
. To check the capabilities of a thermostat, retrieve the thermostat and confirm the relevant capability flags.
These imperative operations return an action attempt that enables you to track the progress of the action. Poll this action attempt, until the action completes.
Further, Seam emits a thermostat.temperature_reached_set_point
event when the thermostat reports a temperature within 1Β° Celsius of the heating or cooling temperature that you requested.
HVAC Settings
When you use an imperative endpoint to set the HVAC settings for a thermostat, you specify the HVAC mode and the desired set points in Fahrenheit or Celsius.
To set the HVAC mode and set points, issue a thermostat heat
, cool
, heat_cool
, or off
request and include the desired set points in the body of the request.
Fan Mode Settings
Seam supports the following fan mode settings:
on
The fan runs all the time, regardless of whether the HVAC system is cooling or heating.
auto
The fan runs whenever the HVAC system is cooling or heating but does not run at other times.
circulate
The fan runs for a specific number of minutes each hour, regardless of whether the HVAC system is cooling or heating. This setting is only supported on certain Honeywell thermostats.
Process Overview
To configure and then verify a climate setting on a thermostat, perform the following steps:
Confirm the capabilities of the thermostat.
Execute the imperative climate setting request. See the following instructions:
Poll the action attempt. See Poll the Action Attempt.
Before You Begin: Confirm Capabilities
Before you attempt to set the HVAC or fan mode settings for a thermostat, be sure to confirm that your device has the capability to perform these operations. You can inspect the capabilities of a device by checking the following capability flags for the device:
device.can_hvac_heat
device.can_hvac_cool
device.can_hvac_heat_cool
device.can_turn_off_hvac
Use the /devices/get
endpoint for a specific device to return these capability flags. Then, use an if
statement or similar check to confirm that the relevant flag is both present and true
before attempting to perform the imperative thermostat action.
If the relevant capability flag is false
or not present, you can view the properties of the device, errors or warnings for the device, and events related to the device to learn more about the cause of these issues. For example, you could examine device.properties.online
. In addition, you could look for a device.disconnected
event.
Request:
seam.devices.get(
device_id = "a4b775e3-feb2-4c6b-8e78-a73ec2d70b61"
)
Response:
Device(
device_id='a4b775e3-feb2-4c6b-8e78-a73ec2d70b61',
can_hvac_heat=True, // You can use seam.thermostats.heat() on this device.
can_hvac_cool=True, // You can use seam.thermostats.cool() on this device.
can_hvac_heat_cool=True, // You can use seam.thermostats.heat_cool() on this device.
can_turn_off_hvac=True, // You can use seam.thermostats.off() on this device.
...
)
Set a Thermostat to Heat Mode
You can set a thermostat to heat mode and specify a desired heating set point temperature. By establishing the set point, the thermostat activates the associated heating system to maintain the specified temperature.
Issue the thermostat heat
request, providing the device_id
of the thermostat and the heating_set_point_celsius
or heating_set_point_fahrenheit
.
Request:
# Get the thermostat.
thermostat = seam.devices.get(
device_id = "a4b775e3-feb2-4c6b-8e78-a73ec2d70b61"
)
# Confirm that the thermostat supports heat mode.
if thermostat.can_hvac_heat:
# Perform the heat request.
seam.thermostats.heat(
device_id = thermostat.device_id,
heating_set_point_celsius = 20
)
Response:
ActionAttempt(
action_attempt_id='97125745-15d9-4970-b5be-c34ec3ce1c81',
action_type='SET_HVAC_MODE',
status='success',
result={},
error=None
)
Set a Thermostat to Cool Mode
You can set a thermostat to cool mode and specify a desired cooling set point temperature. By establishing the set point, the thermostat activates the associated cooling system to maintain the specified temperature.
Issue the thermostat cool
request, providing the device_id
of the thermostat and the cooling_set_point_celsius
or cooling_set_point_fahrenheit
.
Request:
# Get the thermostat.
thermostat = seam.devices.get(
device_id = "a4b775e3-feb2-4c6b-8e78-a73ec2d70b61"
)
# Confirm that the thermostat supports cool mode.
if thermostat.can_hvac_cool:
# Perform the cool request.
seam.thermostats.cool(
device_id = thermostat.device_id,
cooling_set_point_celsius = 25
)
Response:
ActionAttempt(
action_attempt_id='87478724-0e30-4fed-9f2a-456971b7b04f',
action_type='SET_HVAC_MODE',
status='success',
result={},
error=None
)
Set a Thermostat to Heat-Cool Mode
You can set a thermostat to heat-cool (also known as "auto") mode and specify desired set point temperatures for both heating and cooling. By establishing the set points, the thermostat activates the associated heating and cooling systems as needed to maintain the specified temperature range.
Issue the thermostat heat_cool
request, providing the device_id
of the thermostat and the following set points:
heating_set_point_celsius
orheating_set_point_fahrenheit
cooling_set_point_celsius
orcooling_set_point_fahrenheit
Request:
# Get the thermostat.
thermostat = seam.devices.get(
device_id = "a4b775e3-feb2-4c6b-8e78-a73ec2d70b61"
)
# Confirm that the thermostat supports heat-cool mode.
if thermostat.can_hvac_heat_cool:
# Perform the heat_cool request.
seam.thermostats.heat_cool(
device_id = thermostat.device_id,
heating_set_point_celsius = 20,
cooling_set_point_celsius = 25
)
Response:
ActionAttempt(
action_attempt_id='8050ec59-7f29-4d0d-9842-dedaf304740d',
action_type='SET_HVAC_MODE',
status='success',
result={},
error=None
)
Turn off Heating and Cooling
You can set a thermostat to "off" mode, which deactivates the associated heating and cooling systems. In this state, the thermostat does not regulate indoor temperatures.
Issue the thermostat off
request, providing the device_id
of the thermostat.
Request:
# Get the thermostat.
thermostat = seam.devices.get(
device_id = "a4b775e3-feb2-4c6b-8e78-a73ec2d70b61"
)
# Confirm that the thermostat supports off mode.
if thermostat.can_turn_off_hvac:
# Perform the off request.
seam.thermostats.off(
device_id = thermostat.device_id
)
Response:
ActionAttempt(
action_attempt_id='ef94c8b2-3ff0-4e56-a97e-033ca07ba0fd',
action_type='SET_HVAC_MODE',
status='success',
result={},
error=None
)
Set the Fan Mode Setting
You can configure the fan mode setting for a thermostat. For details about the supported fan modes, see Fan Mode Settings.
Set the fan mode setting by providing the device_id
of the thermostat and specifying the desired fan_mode_setting
.
Request:
seam.thermostats.set_fan_mode(
device_id = "a4b775e3-feb2-4c6b-8e78-a73ec2d70b61",
fan_mode_setting = "auto"
)
Response:
ActionAttempt(
action_attempt_id='9c9b584b-c645-4ce0-a9c2-79b6f1db2396',
action_type='SET_FAN_MODE',
status='success',
result={},
error=None
)
Poll the Action Attempt
The imperative HVAC or fan mode setting request returns an action attempt. Use the action_attempt_id
from this response to poll the associated action attempt using the /action_attempts/get
request. When the setting modification completes successfully, the status
of the action attempt changes to success
.
Request:
seam.action_attempts.get(
action_attempt_id = "9c9b584b-c645-4ce0-a9c2-79b6f1db2396"
)
Response:
ActionAttempt(
action_attempt_id='9c9b584b-c645-4ce0-a9c2-79b6f1db2396',
action_type='SET_FAN_MODE',
status='success',
result={},
error=None
)
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