Tuya BAC-002-ALZB


Model	BAC-002-ALZB
Vendor	Tuya
Description	FCU thermostat temperature controller
Exposes	climate (local_temperature, system_mode, fan_mode, current_heating_setpoint, preset, local_temperature_calibration), child_lock, schedule, max_temperature, deadzone_temperature
Picture

Switch the thermostat off. Press and hold the temperature down button for +- 8 seconds to enable the pairing mode (display lights up and a WiFi-like icon is blinking). After successful interview turn the thermostat on again.

Stop message flooding

This unit has a bug that makes it send multiple messages when updating. To stop this from flooding your MQTT Queues, please add the following to your configuration.yaml file:

devices: '0x12345678': friendly_name: thermostat debounce: 1

Options

How to use device type specific configuration

control_sequence_of_operation: Operating environment of the thermostat. The value must be one of cooling_only, cooling_and_heating_4-pipes
expose_device_state: Expose device power state as a separate property when enabled. The value must be true or false

Exposes

Climate

This climate device supports the following features: local_temperature, system_mode, fan_mode, current_heating_setpoint, preset, local_temperature_calibration.

current_heating_setpoint: Temperature setpoint. To control publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"current_heating_setpoint": VALUE} where VALUE is the °C between 5 and 35. Reading (/get) this attribute is not possible.
local_temperature: Current temperature measured on the device (in °C). Reading (/get) this attribute is not possible.
system_mode: Mode of this device. To control publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"system_mode": VALUE} where VALUE is one of: off, cool, heat, fan_only. Reading (/get) this attribute is not possible.
preset: Mode of this device (similar to system_mode). To control publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"preset": VALUE} where VALUE is one of: auto, manual. Reading (/get) this attribute is not possible.
local_temperature_calibration: Offset to add/subtract to the local temperature. To control publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"local_temperature_calibration": VALUE}.The minimal value is -3 and the maximum value is 3 with a step size of 1.

Child lock (binary)

Enables/disables physical input on the device. Value can be found in the published state on the child_lock property. It's not possible to read (/get) this value. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"child_lock": NEW_VALUE}. If value equals LOCK child lock is ON, if UNLOCK OFF.

Schedule (composite)

Auto-mode schedule, 4 periods each per category. Example: "06:00/20 11:30/21 13:30/22 17:30/23.5".. Can be set by publishing to zigbee2mqtt/FRIENDLY_NAME/set with payload {"schedule": {"weekdays": VALUE, "saturday": VALUE, "sunday": VALUE}}

weekdays (text): Schedule (1-5), 4 periods in format "hh:mm/tt".
saturday (text): Schedule (6), 4 periods in format "hh:mm/tt".
sunday (text): Schedule (7), 4 periods in format "hh:mm/tt".

Max temperature (numeric)

Maximum temperature. Value can be found in the published state on the max_temperature property. It's not possible to read (/get) this value. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"max_temperature": NEW_VALUE}. The minimal value is 35 and the maximum value is 45. The unit of this value is °C. Besides the numeric values the following values are accepted: default.

Deadzone temperature (numeric)

The delta between local_temperature and current_heating_setpoint to trigger activity. Value can be found in the published state on the deadzone_temperature property. It's not possible to read (/get) this value. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"deadzone_temperature": NEW_VALUE}. The minimal value is 1 and the maximum value is 5. The unit of this value is °C. Besides the numeric values the following values are accepted: default.