Blue Star Air Conditioner
Blue Star AC E8 error
Overcurrent / compressor overload / Control board (PCB) fault
Try a reset once. If it comes back, a trained technician should repair it.
Meaning depends on your model
Different Blue Star models use this code for different faults. The most commonly reported meanings are below. Check the model number on the sticker of your unit and your user manual to know which one applies.
Possible meaning 1Overcurrent / compressor overload
Needs a technicianThe AC drew more current than is safe, so it shut down to protect the compressor and wiring.
Common causes
- Low or unstable voltage
- Dirty outdoor coil making the compressor work harder
- Weak compressor or capacitor
- Faulty inverter board
Try this at home first
Tick each step as you go
When to call a technician
If it repeats, a technician must check the voltage, compressor current and board.
Possible meaning 2Control board (PCB) fault
Needs a technicianThe control board has detected a fault in its own electronics or settings.
Common causes
- Power surge or unstable voltage
- Moisture or insects on the board
- Failed part or wrong setting on the board
Try this at home first
Tick each step as you go
When to call a technician
If the fault repeats, a technician must check or replace the board.
Safety first
Always switch off at the wall socket or MCB before touching any part. Do not open the outdoor unit, control boards or gas pipes yourself — they carry high voltage and pressure.
Frequently asked questions
What does E8 mean on a Blue Star Air Conditioner?
Different Blue Star models use this code for different faults. The most commonly reported meanings are below. Check the model number on the sticker of your unit and your user manual to know which one applies. Overcurrent / compressor overload / Control board (PCB) fault.
Can I fix Blue Star Air Conditioner error E8 myself?
You can try a reset first: Switch off for 15 minutes, check the voltage/stabilizer, then restart. If the code returns, call a technician.
Is it safe to keep using the Air Conditioner with E8?
Avoid repeated restarts; running with this fault can cause more damage.
Other Blue Star AC codes
Same code on other brands
Sources
We write every explanation in our own words from these references.
- DigiRake Knowledge — Blue Star AC error codes
- ApplianceFaults.in — Blue Star air conditioner
- The Chill Spot — Blue Star AC error codes
- UniqRepair — Blue Star split AC error code list
- Republic World — Blue Star AC error codes list (inverter)
Last checked: 2026-10-20