User Manual for Velit 2000R Rooftop Air Conditioner
Comprehensive user manual for the Velit 2000R Rooftop DC Air Conditioner. Includes detailed installation instructions, operation modes, troubleshooting guides, and technical specifications for your camper van cooling system.
Quick answers from the manual
Quick answer
- The Velit 2000R is a rooftop DC air conditioner for camper vans. It requires professional installation, supports 12V/24V power, and features multiple modes including Sleep, Eco, Cooling, and Turbo. p. 1, 3
Key actions
- Install the unit p. 5, 6, 7
First start
- Ensure the unit is installed by qualified personnel and connected to a 12V or 24V power source with proper fusing. p. 3, 7
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Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Cooling Capacity | 8000BTU/2200W | Cooling power | p. 4 |
| Refrigerant | R134a 750g | Coolant type | p. 4 |
Where to find it in the PDF
- Specifications p. 4
- Installation p. 5, 6, 7
Table of contents
Manual images
Click an image to enlargeQuick Guide
The Velit 2000R is a rooftop DC air conditioner designed for camper vans. This manual covers essential safety, installation, and operation procedures. Key highlights include:

- Installation: Requires a 14x14 inch roof opening and must be performed by qualified personnel.
- Operation: Features Sleep, Eco, Cooling, and Turbo modes, adjustable via the control panel or remote.
- Troubleshooting: Includes an error code table to diagnose common issues like low voltage or sensor errors.
- Maintenance: Keep the inlet filter clean and monitor system pressure if cooling performance drops.
Safety Information
For your safety and the best performance, please adhere to the following:
- Installation and repairs must be performed by qualified personnel.
- Do not modify the unit.
- Keep out of reach of children.
- Do not use in or near flammable environments.
- Do not use if the ambient temperature is lower than 40°F (4°C) to prevent frost inside the unit.
- Do not power wash the unit or use detergents for cleaning.
Specifications
The Velit 2000R operates on 12V or 24V DC power.

- Cooling Capacity: 8000BTU / 2200W
- Refrigerant: R134a (750g)
- Operating Temperature: 38-125°F (0-52°C)
- Noise Level: 55dB (Eco mode) to 65dB (Boost mode)
- Weight: 66lb
Installation
Follow these steps for proper installation:



- Location: Ensure the roof opening is 14x14 inches. Check for obstructions.
- Sealing: Attach the sealing gasket to the roof opening. Apply sealant to the bottom of the gasket and the edge where the unit contacts the roof.
- Mounting: Place the unit over the opening. Secure it using the provided M8 threaded rods and anti-slip nuts. Tighten to 4.5-5.6NM (3.3-4.2 lb. ft). Do not overtighten.
- Wiring: Connect the power cable to the battery, ensuring fuse boxes are installed on both positive and ground lines.
- Decor Panel: Secure the interior decor panel using the provided self-tapping screws and washers.
Operation
The unit can be controlled via the main control panel or the remote control.
- Modes: Switch between Sleep, Eco, Cooling, and Turbo.
- Fan Speed: Adjustable separately from the cooling mode.
- Temperature: Adjustable via the control panel buttons.
- Reset: Long press the power button for ten seconds to reset to factory defaults.
Troubleshooting
If the unit displays an error code, refer to the following:
- E0: Ambient temperature sensor issue. Check the white 2-pin connector.
- E4/EL: Low voltage. Check system and battery voltage (should be above 10.5V).
- E2: Over-current. Check for blocked air inlets or short circuits.
- Unit not cooling: Clean the inlet filter and check the system pressure.
Practical help
Common problems
Clean the inlet filter, check pressure at the low-pressure port, and recharge with R134a if necessary.
Ambient temperature sensor issue. Check the white 2-pin connector.
Low voltage. Check system and battery voltage (should be above 10.5V).
Increase the fan speed to mitigate inconsistent temperature issues.
Before use
- Ensure installation is performed by qualified personnel.
- Verify the roof opening is 14x14 inches.
- Check that the ambient temperature is above 40°F.
- Ensure all wiring connections are secure and fused.
- Verify battery voltage is sufficient (12V or 24V system).
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Specs in practice
- Input Voltage
- Supports 12V or 24V DC systems.
- Cooling Capacity
- 8000BTU/2200W output.
Images and diagrams
- The control panel displays current mode, fan speed, and temperature settings.
- Installation requires securing the unit with M8 threaded rods and anti-slip nuts.
- The remote control mirrors the main control panel functions.
Model compatibility
- Designed for rooftop installation on camper vans.
- Requires a 14x14 inch roof opening.
Manual page author
Emily Carter
User documentation editor