Vayu 9.0 — Troubleshooting Guide

TABLE OF CONTENTS

• 1. Quick Reference Table
• 2. Pressure Unit Mismatch (BAR vs. PSI)
• 3. Selecting the Wrong Inflation Mode
• 4. Corded (Cigarette Lighter) Mode Not Working
• 5. Overheating / Continuous Use
• 6. Battery & Charging Notes
• 7. General Safety Reminders
• 8. If the Problem Persists

1. Quick Reference Table

2. Pressure Unit Mismatch (BAR vs. PSI)

If the target/preset pressure looks far too high or too low — for example the inflator stops well short of a full tyre, or doesn't stop at all — the unit may be set to the wrong scale (e.g. BAR selected when you meant PSI, or vice versa). The units are not interchangeable 1:1 (1 BAR ≈ 14.5 PSI).

Fix:

1. Press and hold the "Mode" button to cycle through the pressure units (PSI / BAR / KPA).
2. Stop on the correct unit for your use case (PSI is standard for most car and bike tyres).
3. Use "+" or "–" to re-enter your desired target pressure, and wait until the numbers stop flashing.
4. Confirm the unit shown on the display before pressing "Start" to begin inflation.

3. Selecting the Wrong Inflation Mode

Vayu 9.0 cycles through 5 modes: Car, Motorcycle, Bicycle, Ball, and Custom. Inflating with the wrong mode selected can lead to under- or over-inflation relative to what you intended.

Fix:

1. Press the "Mode" button (short press, after the unit is set) to cycle through the inflation modes.
2. Select the mode that matches what you're inflating, or Custom for a manual target.
3. Set the target pressure with "+"/"–" before pressing "Start."

4. Corded (Cigarette Lighter) Mode Not Working

If the device won't power on or inflate while using the cigarette lighter power cord:

• Confirm the car engine has been started first.
• Check the power cord is fully and securely connected to both the tire inflator and the vehicle's 12V socket.
• Ensure the air hose is properly connected to the inflator and the tire valve.
• Press and hold the "Power" button to switch the device on before selecting mode and pressure.

5. Overheating / Continuous Use

• Allow the device to cool down after extended use to avoid overheating.
• If the inflator stops suddenly mid-task, this is usually the overheating protection activating — let it rest before resuming.

6. Battery & Charging Notes

• Fully charge the battery before using it for the first time.
• Charge via the Type-C charging port using the supplied cable.
• Note: the USB 5V 1A output on this device cannot be used as a charging bank — it's for accessory power only, not general device charging.

7. General Safety Reminders

• Use the inflator only for its intended purposes.
• Do not inflate objects beyond their recommended pressure limits.
• Avoid operating the inflator in extreme temperatures or near flammable materials.
• Keep out of reach of children.
• Store the inflator in a cool, dry, well-ventilated place; do not expose it to water or other liquids.

8. Still Facing Issues?

If the issue persists after performing all troubleshooting steps, please raise a support request.

Our support team will assist you further.

Support

• Visit: www.portronics.com
• Support Portal: support.portronics.com