Note: Since logistics regulations restrict shipping items with batteries, the battery has been removed from the remote control. Upon receiving the package, please purchase a CR2032/A27 3V button cell battery separately. We apologize for any inconvenience.Package Included: Option 1: 1x LCD Switch & Remote Option 2: 1x Mother Board Option 3: 1x Wire Harness Option 4: 1x Remote Option 5: 3PCS SET 1x LCD Switch & Remote & 1x Mother Board Option 6: 5PCS SET 1x LCD Switch & Remote & 1x Mother Board & 1x Wire Harness & 1x Temp SensorSpecification: Color: As shown in picture Remote Distance: Within 10m Voltage: 12V/24V LCD Connector Pin: 3-Pin Triangle Plug Remote Control: 4 Button Battery: 1PC 27A 12V (included)Fitment: Compatible with 3KW, 5KW, and 8KW air diesel parking heaters.Important Note: 1. A transparent protective film is applied to the screen. Remove it before use. 2. If your original motherboard and controller match ours in appearance and have all black connectors, you may replace only the faulty component. If they differ, both the motherboard and controller must be replaced together to ensure compatibility. 3. The remote control is designed exclusively for use with our controller and motherboard. For a complete replacement set, select the 3PCS SET. Please note: selecting only the LCD Switch & Remote does not include the motherboard; selecting only the Mother Board does not include the controller or remote. Ensure correct selection to avoid incorrect orders.Remote Control Coding Instructions: 1. Press and hold the up button for more than 3 seconds while the device is off. 2. Wait until the display shows HFR- to enter coding mode. 3. Press the up button to initiate the remote code transmission. 4. The heater will turn on if the code is successful. If the code fails, the heater will not start. 5. The coding mode will exit automatically after timeout.Parameter Setting Process (Press the setting key to enter): 1. Time Setting: Use up/down keys to adjust hour (24-hour format), minutes, and other parameters. Press enter to confirm and proceed. 2. Timer Power-On Setting: Default is off (display 1oF). Press up to turn on (display 1oN), press enter, then set hour and minute. Countdown mode supports up to 99 hours and 59 minutes. 3. Timer Shutdown Setting: Default is off (display 2oF). Press up to turn on (display 2oN), press enter, then set hour and minute. Countdown mode supports up to 99 hours and 59 minutes. 4. Password Input: Use up/down keys to adjust digits. Press confirm when correct. After entering all four digits correctly, press confirm to proceed. Incorrect input returns to initial state. To exit without changes, press the SET button or wait 10 seconds. 5. Pump Oil Volume Setting: Adjust minimum oil volume using up/down keys. Press confirm to save and proceed to maximum volume setting. Adjust and confirm to continue. 6. Fan Speed Setting: Adjust minimum fan speed using up/down keys. Press enter to confirm and proceed to maximum speed setting. Adjust and confirm to continue. 7. Working Voltage Setting: Must be set when powered off. Use up/down keys to select U-12 for 12V systems or U-24 for 24V systems. Confirm selection. Verify compatibility of oil pump, motor, and ignition plug before operation to prevent damage. 8. Speed Signal Selection: Display shows 5N-1. Use up/down keys to select: choose 5N-2 if impeller magnets have the same polarity, or 5N-1 if polarities differ or only one magnet is present (default). Incorrect selection may double the detected speed. 9. Ignition Plug Power Selection: Display shows PF-5. Use up/down keys to set power level (1=35W, 2=40W, 3=45W, 4=80W, 5=85W, 6=90W). Default is 5. Use default unless verified otherwise. 10. Management Password Modification: Initial state displays oF. Press confirm to begin modification.