Voltas Air Conditioner

E5

How to Fix Voltas Air Conditioner Error E5

Voltas split AC error E5 indicates a communication failure between the indoor and outdoor units. Usually a wiring issue, sometimes a faulty PCB.

Fixable at home 30 min Skill: advanced

Updated April 2026 · Cross-referenced with Voltas service manual

Quick fix: Power-cycle the unit by switching off the AC's MCB for 10 minutes. Communication glitches often clear on reboot.

What error E5 means

Voltas split AC error E5 indicates a communication failure between the indoor and outdoor units. Usually a wiring issue, sometimes a faulty PCB.

Safety first

Safety: This error often requires opening the outdoor unit. Outdoor units carry high voltage and the compressor capacitor can hold a lethal charge even when unplugged. Call a technician unless you are trained.

Step-by-step fix

  1. 1

    Step 1

    Full power-cycle

    Switch off the AC's MCB at the main panel. Wait 10 minutes (important — the PCB retains state for several minutes). Restore power.

  2. 2

    Step 2

    Check the outdoor unit visually

    Without opening anything, check the communication cable between indoor and outdoor units for visible cuts, rodent damage, or loose connections at the terminal block.

  3. 3

    Step 3

    If E5 persists — stop

    Beyond this point, you need to open the outdoor unit and test for communication voltage. This is a trained-technician job. Call Voltas customer care on 1860-500-9595 or an authorised local service centre.

When to call a technician

  • • E5 persists after power-cycle
  • • You see any visible damage to the communication cable between indoor and outdoor units
  • • The outdoor unit fan does not spin when the AC is turned on

Frequently asked questions

What does E5 mean on Voltas AC?

Communication failure between indoor and outdoor units. Usually wiring, sometimes PCB. Needs a technician if power-cycle doesn't fix it.

Is it safe to open the outdoor unit?

Not without training. The outdoor unit has high-voltage terminals and a capacitor that holds charge. Call a Voltas technician.

Affiliate disclosure: Tool links go to Amazon.in and may earn us a small commission at no extra cost to you. All guides are informational — follow safety warnings before attempting any fix. If in doubt, call a certified Voltas technician.