Note: Since the logistics rejects all items with batteries, we can only remove the battery from the remote control. After receiving the packaging, please purchase the remote control battery yourself. We apologize for this inconvenience. The battery specification is 3V button cell CR2032 or A27. Package Included: - 1x LCD Switch & Remote - 1x Mother Board - 1x Wire Harness - 1x Remote - 3PCS SET: 1x LCD Switch & Remote & 1x Mother Board - 5PCS SET: 1x LCD Switch & Remote & 1x Mother Board & 1x Wire Harness & 1x Temp Sensor Specification: - Color: As shown in picture - Remote distance: Within 10m - Voltage: 12V/24V - LCD Connector Pin: 3 Pins Triangle Plug - Remote Control: 4 Button - Battery: 1PC 27A 12V (not included) Fitment: For 3KW, 5KW, 8KW Air Diesel Parking Heater Important Note: 1. There is a transparent plastic protective film on the screen that can be removed before use. 2. If your original motherboard and controller look the same as ours, with all black plugs, you can buy a motherboard or a controller separately to replace the broken one. If your original motherboard and controller differ from ours, you must purchase both together; otherwise, they will not fit your heater. 3. The remote control is compatible only with our controller and motherboard. If you need a complete set including controller, remote, and motherboard, please choose the 3PCS SET. If only LCD Switch & Remote is selected, the motherboard is not included. If only Mother Board is selected, the controller and remote are not included. Please ensure correct selection to avoid incorrect orders. Remote Control Coding Instructions: 1. Press and hold the up button for more than 3 seconds while in the off state. 2. Enter the remote control coding interface until "HFR-" is displayed. 3. Press the up button on the remote to launch the remote code. 4. The heater will turn on after the code disappears. If the code fails, the heater will not start. 5. The code interface will exit automatically after timeout. Parameter Setting Procedure (press the setting key to enter setting mode): 1. Time Setting: Use up/down keys to adjust parameters. Set hour (24-hour format), minutes, and other settings sequentially. Press enter to confirm each parameter and proceed to the next. 2. Timer Power-On Setting: Default is off (display shows 1oF). Press up key to turn on (display shows 1oN). Press enter to confirm, then set hour and minute. Timer operates in countdown mode, up to 99 hours and 59 minutes. 3. Timer Shutdown Setting: Default is off (display shows 2oF). Press up key to turn on (display shows 2oN). Press enter to confirm, then set hour and minute. Timer operates in countdown mode, up to 99 hours and 59 minutes. 4. Management Password Input: Use up/down keys to adjust. When correct digit appears, press confirm key to proceed to next digit. After entering correct 4-digit password, press confirm to continue. If input is incorrect, system returns to first digit entry. To exit without changes, press SET button until exit or wait 10 seconds for auto-exit. 5. Pump Oil Volume Setting: Use up/down keys to adjust minimum pump oil volume. After setting, press confirm to enter maximum oil volume setting. Adjust maximum using up/down keys, then press enter to proceed. 6. Fan Speed Setting: Use up/down buttons to adjust minimum fan speed. After setting, press enter to enter maximum speed setting. Adjust maximum speed using up/down buttons, then press enter to proceed. 7. Working Voltage Setting: Must be set in shutdown state. Use up/down keys to switch and set working voltage. Set to U-12 for 12V system, U-24 for 24V system. Ensure oil pump, motor, and ignition plug are compatible before operation to prevent damage. 8. Speed Signal Selection: Display shows 5N-1. Use up/down keys to set. Choose 5N-2 if impeller has two magnets with same polarity. Choose 5N-1 if magnet polarities differ or only one magnet exists (default). Incorrect selection may double speed reading. 9. Ignition Plug Power Selection: Display shows PF-5. Use up/down buttons to modify value (1=35W, 2=40W, 3=45W, 4=80W, 5=85W, 6=90W). Default is 5. Use default unless specific adjustment is required.