Hwam_stove component for Home Assistant

This project should be considered abandoned. I do not have access to a HWAM stove anymore. Feel free to fork and update as you see fit.

The hwam_stove component is used to control a Hwam Stove with Smartcontrol from Home Assistant.

There is currently support for the following device types within Home Assistant:

• binary_sensor to monitor various alarm conditions.
• fan to start the stove and control the burn level.
• sensor for various values and parameters.

When enabled, this component will automatically add its fan entity to Home Assistant.

Configuration

To add a single stove with name living_room to Home Assistant, use the following in configuration.yaml.

# Example configuration.yaml entry
hwam_stove:
  living_room:
    host: 192.168.1.12

Configuration Options

Each stove under the hwam_stove component is added and identified by its name - living_room in the example above - and can be configured with the following options.

host:

• description: IP address or hostname of the Hwam Stove.
• required: true
• type: string

monitored_variables:

• description: A list of variables to expose as sensors.
• required: false
• type: list
• keys:
  • algorithm Algorithm version on the stove.
  • burn_level Current burn level.
  • date_time Date and time on the stove.
  • firmware_version Firmware version of the stove.
  • maintenance_alarms Maintenance alarms will be added as a series of binary sensors (see Maintenance Alarms).
  • message_id Last known message ID.
  • new_fire_wood_estimate Estimate time when the stove will request new firewood.
  • night_begin_time Night lowering start time.
  • night_end_time Night lowering end time.
  • night_lowering Current night lowering status.
  • operation_mode Current operation mode.
  • oxygen_level Oxygen level in the chimney.
  • phase Current phase.
  • refill_alarm Whether the stove is currently requesting new firewood.
  • remote_refill_alarm Whether the remote refill alarm option is switched on.
  • remote_version Firmware version on the room unit.
  • room_termperature Room temperature in degrees Celsius.
  • safety_alarms Safety alarms will be added as a series of binary sensors (see Safety Alarms).
  • stove_temperature Chimney temperature in degrees Celsius.
  • time_since_remote_message Number of seconds since the last message was received from the room unit.
  • time_to_new_fire_wood Estimate time until the stove will request new firewood.
  • updating Current updating status.
  • valve1_position Current position of valve 1.
  • valve2_position Current position of valve 2.
  • valve3_position Current position of valve 3.

Maintenance Alarms

When the maintenance_alarms option is added to the list of monitored_variables, the following binary sensors will be added to Home Assistant. In each entity id, <name> will be replaced by the name of the stove as specified in configuration.yaml.

• binary_sensor.maintenance_alarms_<name> This is a catch-all sensor which will be on when any other maintenance alarm is active.
• binary_sensor.maintenance_alarms_stove_backup_battery_low_<name> Indicates that the backup battery in the stove is low. Charge or replace the battery.
• binary_sensor.maintenance_alarms_o2_sensor_fault_<name> Indicates a fault in the oxygen sensor. Run a self test on the stove. The stove may be used with this error, but the door should be kept open when refilling until permanent flames are seen. Service is recommended as soon as possible.
• binary_sensor.maintenance_alarms_o2_sensor_offset_<name> Indicates an offset on the oxygen sensor. Run a self test on the stove. The stove may be used with this error, but the door should be kept open when refilling until permanent flames are seen. Service is recommended as soon as possible.
• binary_sensor.maintenance_alarms_stove_temperature_sensor_fault_<name> Indicates a fault in the stove temperature sensor. Run a self test on the stove. The stove may be used with this error, but the door should be kept open when refilling until permanent flames are seen. Service is recommended as soon as possible.
• binary_sensor.maintenance_alarms_room_temperature_sensor_fault_<name> Indicates a fault in the room temperature sensor. Replace the batteries in the room unit. The stove may be used with this error.
• binary_sensor.maintenance_alarms_communication_fault_<name> Indicates a fault in the communication between the stove and the room unit. Place the room unit closer to the stove and make sure it is switched on. If necessary, replace the batteries in the room unit. The stove may be used with this error.
• binary_sensor.maintenance_alarms_room_temperature_sensor_battery_low_<name> Indicates that the battery level in the room unit is low. Replace the batteries in the room unit.

Safety Alarms

When the safety_alarms option is added to the list of monitored_variables, the following binary sensors will be added to Home Assistant. In each entity id, <name> will be replaced by the name of the stove as specified in configuration.yaml.

• binary_sensor.safety_alarms_<name> This is a catch-all sensor which will be on when any other safety alarm is active.
• binary_sensor.safety_alarms_valve_fault_<name> Indicates a fault with one or more valves. Restart the stove and run a self test. Do not use the stove until the problem is fixed.
• binary_sensor.safety_alarms_bad_configuration_<name> Indicates a fault in the airbox configuration. Update the airbox software with the format option enabled. Do not use the stove until the problem is fixed.
• binary_sensor.safety_alarms_valve_disconnected_<name> Indicates that one or more valves are not connected. Restart the stove and run a self test. Do not use the stove until the problem is fixed.
• binary_sensor.safety_alarms_valve_calibration_error_<name> Indicates a calibration error with one or more valves. Restart the stove and run a self test. Do not use the stove until the problem is fixed.
• binary_sensor.safety_alarms_chimney_overheat_<name> Indicates a chimney overheat. The stove will continue to operate in safety mode until the temperature is back to normal (below 450 degrees Celsius).
• binary_sensor.safety_alarms_door_open_too_long_<name> Indicates that the door has been open for too long.
• binary_sensor.safety_alarms_manual_safety_alarm_<name> Indicates a manually triggered safety alarm.
• binary_sensor.safety_alarms_stove_sensor_fault_<name> Indicates a fault with one or more sensors. Restart the stove and run a self test. Do not use the stove until the problem is fixed.

Services

Service 'hwam_stove.enable_night_lowering'

Enable the night lowering feature on the Hwam Stove. This service takes the following parameter:

• stove_name (Required) The name of the stove as specified in configuration.yaml. Example: living_room.

Service 'hwam_stove.disable_night_lowering'

Disable the night lowering feature on the Hwam Stove. This service takes the following parameter:

• stove_name (Required) The name of the stove as specified in configuration.yaml. Example: living_room.

Service 'hwam_stove.enable_remote_refill_alarm'

Enable the remote refill alarm option on the Hwam Stove. This service takes the following parameter:

• stove_name (Required) The name of the stove as specified in configuration.yaml. Example: living_room.

Service 'hwam_stove.disable_remote_refill_alarm'

Disable the remote refill alarm option on the Hwam Stove. This service takes the following parameter:

• stove_name (Required) The name of the stove as specified in configuration.yaml. Example: living_room.

Service 'hwam_stove.set_night_lowering_hours'

Set the night lowering hours. At least one of start_time or end_time must be provided. This service takes the following parameters:

• stove_name (Required) The name of the stove as specified in configuration.yaml. Example: living_room.
• start_time (Optional) The time in 24h format at which night lowering should start. Example: 23:30.
• end_time (Optional) The time in 24h format at which night lowering should end. Example: 07:00.

Service 'hwam_stove.set_clock'

Set the date and time on the Hwam Stove. This service takes the following parameter:

• stove_name (Required) The name of the stove as specified in configuration.yaml. Example: living_room.
• date (Optional) Date to set on the stove. Defaults to today. Example: 2018-10-23.
• time (Optional) Time in 24h format to set on the stove. Defaults to the current time. Example: 19:34.

Example

A full configuration example for the Hwam Stove with Smartcontrol looks like the one below.

# Full example configuration.yaml entry
hwam_stove:
  living_room:
    host: 192.168.1.12
    monitored_variables:
      - room_temperature
      - stove_temperature
      - oxygen_level
      - refill_alarm