Set schedule

The Set schedule action pushes a new schedule to a Eurotronic Comet Blue thermostat.

During the times when the schedule is active, the device will automatically try to reach the Comfort preset temperature. When inactive, the Eco preset is used.

You can set up to four time ranges per day. If you omit a day, that day’s schedule is left unchanged. If you send an empty list for a day, that day’s schedule is cleared.

Time ranges cannot overlap. The device supports 10-minute intervals, so other times are rounded down to the previous 10-minute mark.

Using this action from the user interface

If you prefer building automations and scripts visually, Home Assistant walks you through this action step by step. You pick what to target, tweak a few options, and save. No YAML knowledge required.

To push the device schedule from an automation or a script:

1. Go to Settings > Automations & scenes.
2. Open an existing automation or script, or select Create automation > Create new automation.
3. If you’re setting up a new automation, add a trigger in the When section. Scripts don’t need a trigger. They run when something else calls them.
4. In the Then do section, select Add action.
5. From the search box, search for and select Eurotronic Comet Blue: Set schedule.
6. Select what you want to control. Under By target (see Targets), pick one or more thermostats.
7. Set the desired schedules for each day.
8. Select Save.

Options in the UI

For each day, add one or more heating periods by entering a start time and an end time.

Using this action in YAML

If you work directly in YAML, or you want to know exactly what Home Assistant does under the hood, this section has the technical reference. It lists the field names you use in YAML, their types, and which ones are required.

In YAML, refer to this action as eurotronic_cometblue.set_schedule. A basic example looks like this:

action: eurotronic_cometblue.set_schedule
target:
  entity_id: climate.kitchen
data:
  monday:
    - from: "05:00"
      to: "07:00"
    - from: "16:00"
      to: "23:30"

This updates the schedule of climate.kitchen for Monday. The climate entity will use the Comfort preset between 5:00 AM and 7:00 AM, as well as between 4:00 PM and 11:30 PM. As no other days are defined, they will not be changed.

Options in YAML

Targets of the action

This action requires a target. The target is the object of the action. You can point the action at a single entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more], a device, an area, a floor, or a label, and Home Assistant will run the action on every matching eurotronic_cometblue entity behind that target.

• Entity: one specific eurotronic_cometblue entity, such as eurotronic_cometblue.living_room.
• Device: every eurotronic_cometblue entity that belongs to a device.
• Area: every eurotronic_cometblue entity in a room or area.
• Floor: every eurotronic_cometblue entity on a floor.
• Label: every eurotronic_cometblue entity that shares a label.

You can also select different target types in one action. For example, you can add a specific entity and an area as targets in the same action to run the action on both of them at once.

Try it yourself

Ready to test this? Open Settings > Tools > Actions, search for this action, fill in the fields, and select Perform action. You see what happens on your actual entitiesAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more] without writing a line of YAML.

Still stuck?

The Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with the action you’re calling and what you expected to happen, or share on our subreddit /r/homeassistant.

Related actions

These actions work well alongside this one:

• Get schedule: Retrieves the configured heating time ranges of one or multiple devices.