Goldair GPOC2415 Platinum 2400W Smart Wi-Fi Oil Column Heater

General Notes

I actually broke my WBR3 Chip during dissassembly so the following config is going to be based on using an ESP8266 Chip.

To get at the chip you will need to pry the front faceplate off using a spudger or screwdriver. Then remove all of the screws and pull off the whole faceplate, the chip is located on the back of the mainboard. You will then need to desolder it to flash it.

Flashing Instuctions

This device is based on the WBR3 Tuya Module, you can check for flashing setup on the Elektroda forum. With the WBR3 removed and with the probe pins soldered you can use ltchiptool to flash it via UART. We strongly recommend using an external power source for the 3v3 power supply. Make sure to connect the GND of the supply and the serial converter together, so they share the same GND reference.

GPIO Pinout

Pin	Function
GPIO1	UART TX (Connects to TuyaMCU RX)
GPIO3	UART RX (Connects to TuyaMCU TX)

TuyaMCU DP IDs

DP ID	Function	Type	Values / Notes
1	Power	Boolean	0: Off, 1: On
2	Target Temperature	Value	Integer, 5-30°C
3	Current Temperature	Value	Integer, °C
5	Power/Mode	Enum	0: ECO, 1: LOW, 2: MED, 3: HIGH
7	Child Lock	Boolean	0: Off, 1: On
11	Work State	Enum	0: Heating, 1: Warm
20	AUTO-OFF Time Remaining	Value	Integer, minutes
21	Unknown	Raw	8-byte hex value, function unknown
101	Disable Beeping	Boolean	0: Beeping enabled, 1: Disabled
102	AUTO-ON Timer	Value	Integer, 0-24 hours
103	AUTO-OFF Timer	Value	Integer, 0-24 hours

Features

Climate Entity

Unified climate control interface exposing:

• Power control
• Target temperature (5-30°C, 1°C steps)
• Current temperature reading
• Fan modes mapped to heating power levels (ECO/LOW/MED/HIGH)
• Work state monitoring (Heating/Warm)

Scheduling

• AUTO-ON: Automatically power on after specified hours (0-24h)
• AUTO-OFF: Automatically power off after specified hours (0-24h)
• Real-time countdown display for AUTO-OFF

Safety Features

• Child lock to prevent accidental changes
• Optional beep disable for quiet operation
• Temperature limits enforced (5-30°C)

Example ESPHome Configuration

The below configuration is for an ESP8226, not the original WBR3 Board, sorry.

esphome:
  name: smart-heater
  friendly_name: Smart-Heater

esp8266:
  board: esp12e

logger:
  baud_rate: 0

uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  baud_rate: 9600

# Enable Home Assistant API
api:
  encryption:
    key: "encryption_key"

ota:
  - platform: esphome
    password: "ota_password"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

captive_portal:
web_server:

text_sensor:
  - platform: template
    id: tuya_work_state
    name: Work State
    filters:
      - map:
          - 0 -> Heating
          - 1 -> Warm

tuya:
  on_datapoint_update:
    - sensor_datapoint: 11
      datapoint_type: enum
      then:
        - text_sensor.template.publish:
            id: tuya_work_state
            state: !lambda "return std::to_string(x);"

switch:
  - platform: tuya
    switch_datapoint: 1
    name: Power
  - platform: tuya
    switch_datapoint: 7
    name: Child Lock
  - platform: tuya
    switch_datapoint: 101
    name: Disable Beeping

number:
  - platform: tuya
    number_datapoint: 2
    name: Temperature
    unit_of_measurement: "°C"
    min_value: 5
    max_value: 30
    step: 1

  - platform: tuya
    number_datapoint: 102
    name: AUTO-ON
    unit_of_measurement: Hours
    min_value: 0
    max_value: 24
    step: 1

  - platform: tuya
    number_datapoint: 103
    name: AUTO-OFF
    unit_of_measurement: Hours
    min_value: 0
    max_value: 24
    step: 1

sensor:
  - platform: tuya
    sensor_datapoint: 3
    name: Current Temperature
    unit_of_measurement: "°C"
  - platform: tuya
    sensor_datapoint: 20
    name: AUTO-OFF Time Remaining
    unit_of_measurement: min

select:
  - platform: tuya
    enum_datapoint: 5
    name: Power/Mode
    optimistic: true
    options:
      0: ECO
      1: LOW
      2: MED
      3: HIGH

climate:
  - platform: tuya
    name: "Smart Heater"
    switch_datapoint: 1                  # Power
    target_temperature_datapoint: 2      # Set temperature
    current_temperature_datapoint: 3     # Current temperature

    active_state:
      datapoint: 11

    fan_mode:
      datapoint: 5
      auto_value: 0
      low_value: 1
      medium_value: 2
      high_value: 3

    visual:
      min_temperature: 5
      max_temperature: 30
      temperature_step: 1