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voltas | air-conditioner – Room Temp Sensor Fault
Error Codes (E4): Troubleshooting, Fixes & Prevention Tips explained below.

Understanding Room Temperature Sensor Fault in AC

The Room Temperature Sensor Fault indicates a malfunction or failure of the sensor responsible for measuring the ambient temperature in the room. This sensor helps the AC regulate cooling efficiently. A faulty sensor may cause inaccurate temperature readings, improper cooling cycles, or system shutdown.

air-conditioner - Common Causes of Room Temperature Sensor Fault

  • Faulty or damaged room temperature sensor.
  • Loose or broken wiring connections.
  • Sensor contamination or environmental damage.
  • Faulty control board interpreting sensor signals incorrectly.

air-conditioner - Steps to Fix Room Temperature Sensor Fault

  • Reset the AC

    1. Turn off the AC and unplug it for 5 minutes.
    2. Plug it back in and restart the unit.
  • Inspect Sensor Wiring

    1. Check for loose or damaged wiring connected to the room temperature sensor.
    2. Repair or replace wiring if needed.
  • Test the Sensor

    1. Use a multimeter or diagnostic tool to check sensor functionality.
    2. Replace the sensor if faulty.
  • Contact Professional Service

    1. If the issue persists, contact authorized technicians for further diagnosis.

air-conditioner - Helpful Tips to Prevent Room Temperature Sensor Issues

  • Keep sensors clean and free from dust.
  • Avoid exposure to moisture or harsh conditions.
  • Ensure proper installation and wiring.
  • Schedule regular maintenance checks.
  • Use authorized service for repairs and replacements.

FAQs About Room Temperature Sensor Fault

Question: What happens when the room temperature sensor fails
Answer: The AC may not cool properly or may shut down to protect itself.
Question: Can I reset the sensor fault myself
Answer: Power cycling may help temporarily, but persistent issues require technician help.
Question: Is sensor replacement expensive
Answer: Costs vary but typically it is a moderate repair.
Question: How to avoid sensor faults
Answer: Regular maintenance and keeping sensors clean help prevent problems.
Question: When should I call a technician
Answer: If errors continue after resets or the AC performance is poor.

When to Contact a Technician

If you experience any of the following issues even after completing the recommended troubleshooting steps, please contact an authorized service technician or our support team for further assistance.

  • The same error appears repeatedly after restarting or resetting the unit.
  • Multiple error codes appear simultaneously.
  • The device makes unusual noises, vibrations, or emits a burning smell.
  • The product fails to start, operate, or complete its function despite troubleshooting.
  • There are signs of electrical issues, physical damage, or leakage.
  • An unknown or unlisted error code appears on the display.

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