1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Feegow Parking Heater Controller Board. Please read this manual thoroughly before using the product to ensure proper function and safety.
2. Safety Information
- Ensure the power supply is disconnected before installation or maintenance.
- This device is designed for 12V-5KV systems and is compatible with 3-wire connections only. Do not attempt to connect it to 5-wire systems.
- Installation should be performed by a qualified professional if you are unsure about the process.
- Keep the device away from water and extreme temperatures.
3. Package Contents
Verify that all items are present in the package:
- 1x LCD Monitor
- 1x Remote Control
- 1x Controller Board

Figure 3.1: Included components of the Feegow Parking Heater Controller Board. This image shows the LCD display unit, the remote control, and the main circuit board with its attached wiring harness.
4. Product Overview
The Feegow Parking Heater Controller Board is designed to manage your vehicle's diesel air heater. It features an LCD display for real-time information and a remote control for convenient operation.
4.1. LCD Monitor
The LCD monitor provides a clear display of operational status and temperature readings. It includes an intuitive interface for adjusting settings.

Figure 4.1: The LCD display unit and remote control. The LCD screen shows an "Air Heater" graphic and fuel level indicator, with control buttons and a rotary knob. The remote control has four buttons and a key ring.
4.2. Remote Control
The compact remote control allows you to adjust heater settings from a distance, enhancing user convenience.
4.3. Controller Board
This is the central processing unit for the heater system, connecting the LCD display, remote, and the heater itself. It is designed for precision and durability.

Figure 4.2: The main controller board. This image highlights the circuit board with various electronic components and connectors, along with the attached wiring harness.
5. Setup and Installation
Follow these steps for proper installation:
- Prepare the Vehicle: Ensure the vehicle's power supply is completely disconnected before beginning installation.
- Mount the Controller Board: Find a suitable, secure location for the controller board within the vehicle, away from moisture and excessive heat.
- Connect Wiring:
- Connect the wiring harness from the controller board to your diesel air heater.
- Connect the LCD monitor to the designated port on the controller board.
- Important: This controller is designed for 3-wire systems only. Do not attempt to connect it to 5-wire systems, as this may cause damage to the unit or the heater.

Figure 5.1: Example of a 3-wire connector. This image shows the specific type of connector used for compatibility with 3-wire systems.
- Mount the LCD Monitor: Install the LCD monitor in a location that is easily visible and accessible to the user.
- Reconnect Power: Once all connections are secure, reconnect the vehicle's power supply.

Figure 5.2: Illustrative image of the controller board and remote control in a vehicle engine bay setting. This image provides a visual context for where the components might be installed.
6. Operating Instructions
6.1. Using the LCD Monitor
- Power On/Off: Press and hold the power button (usually marked with a circle and vertical line) to turn the heater system on or off.
- Adjust Temperature: Use the rotary knob or arrow buttons on the LCD panel to set the desired temperature. The current temperature will be displayed on the screen.
- View Status: The LCD screen displays various operational parameters, including current temperature and fuel level.
- Settings Menu: Press the settings button (often a gear icon) to access advanced settings and customization options.
6.2. Using the Remote Control
The remote control provides convenient wireless operation:
- Power Button: Typically, one button is designated for turning the heater system on or off.
- Temperature Adjustment: Other buttons may allow for increasing or decreasing the temperature setting. Refer to the remote's specific button layout for exact functions.
- Ensure the remote control has fresh batteries for optimal performance.
7. Maintenance
- Cleaning: Wipe the LCD screen and exterior of the controller with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.
- Battery Replacement: Replace the remote control batteries as needed to maintain functionality.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | No power supply; loose connection; faulty unit. | Check vehicle's power supply. Verify all wiring connections are secure. If problem persists, contact support. |
| Remote control not working. | Dead batteries; out of range; interference. | Replace remote batteries. Ensure you are within operating range. Reduce potential interference. |
| Incorrect temperature display. | Sensor issue; environmental factors. | Ensure sensor is clean and unobstructed. Allow time for temperature stabilization. |
9. Specifications
- Part Name: Controller Board
- Brand: Feegow
- Model Number: V2N41R86901NKX9XA6E86X681
- Voltage: 12V-5KV
- Compatibility: 3-wire systems (Not compatible with 5-wire systems)
- Dimensions: Approximately 13 x 9 x 8 cm
- Weight: Approximately 214 g
- Features: LCD display, temperature display function, remote control.
10. Warranty and Support
For warranty information or technical support, please refer to the purchase documentation or contact your retailer. Keep your proof of purchase for any warranty claims.