E6
Electra Split AC
Severity: ModerateWhat Does This Error Mean?
E6 on an Electra AC means the outdoor coil (condenser pipe) thermistor has a fault. This sensor monitors the temperature of the outdoor heat exchanger during operation and feeds data to the inverter for efficiency control. When the sensor fails or reads an impossible value, the AC shuts down to prevent running without coil temperature data.
Affected Models
- Electra Avante Inverter
- Electra Classic Inverter
- Electra Alpha Series
- Electra Split AC (all inverter models)
- Electra 1 Ton / 1.5 Ton / 2 Ton Inverter
Common Causes
- Outdoor coil thermistor failed — resistance drifted outside the acceptable range
- Thermistor probe dislodged from the condenser coil pipe
- Connector at the outdoor PCB loose or corroded
- Thermistor wiring damaged inside the outdoor unit
- Outdoor PCB fault causing incorrect sensor reading
How to Fix It
-
Switch off the AC and circuit breaker, wait 5 minutes, then restart once.
If E6 was triggered by a temporary sensor glitch, it may clear after a power cycle. If it returns, the sensor has a genuine fault.
-
If E6 persists, call an Electra-authorised technician.
The coil thermistor is an inexpensive part. The repair is typically quick once a technician visits.
When to Call a Professional
E6 requires a licensed AC technician. The outdoor coil thermistor is inside the outdoor unit casing, which contains high-voltage components. A technician will test the thermistor resistance and replace it if faulty.
Frequently Asked Questions
What is the difference between E5 and E6 on an Electra AC?
E5 is the outdoor ambient temperature sensor (measures outside air temperature). E6 is the outdoor coil thermistor (measures the condenser coil pipe temperature). Both are outdoor sensors but they measure different things — E5 is about the air, E6 is about the coil itself.
Can E6 appear after rain?
Yes — moisture can cause temporary corrosion at connector terminals on the outdoor PCB, producing a false E6. If E6 appeared after heavy rain and then clears on its own, it may not return. If it persists, the connector or sensor needs replacement.