How To Troubleshoot and Fix a Mini Split E8 Error Code

By | January 25, 2020

How To Troubleshoot and Fix a Mini Split E8 Error Code
If an E8 error code displays on a mini split there are a few things a DIY type person can do before calling an HVAC tech.

Of course, if in doubt always call a professional.

Below are the things to check and reset an E8 error code.

What is an E8 error Code on a Mini Split?
An E8 error code is a Fan Speed Malfunction.

When the indoor or outdoor fan speed remains too low for certain time the unit will stop and the LED will display the E8 failure.

What Causes an E8 Code on a Mini Split?

  • Dirty Indoor Air Filter
  • Faulty Fan Motor
  • Wiring
  • Blockage at Outdoor Fan Motor Assembly
  • Bad Control Board
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    How To Reset an E8 Mini Split Error Code

    1. Power off the unit and turn off the breaker or disconnect.
    2. Wait 2-3 minutes and power the unit back on.

    Power resetting the indoor and outdoor unit at the breaker will reset the unit.

    If the error codes comes back more troubleshooting will need to be done to find the problem.

    Troubleshoot an E8 Error Code

    1. Check Fan blowers on indoor and outdoor units.
    2. Check indoor unit air filters are not dirty and blocking air flow.
    3. Check fan rotation with it able to spin.
    4. Check the fan motor wiring.
    5. Check fan motor electrical voltages.
    6. Test fan motor.
    7. Check the PCB board.

    Summary
    Above is the basic steps a homeowner can do to fix an E8 error code.

    An E8 error usually indicates a fan problem with the indoor or outdoor unit.

    An E8 error is usually cleared by power cycling both the indoor and outdoor unit by turning power off at the breaker.

    Be sure to check the indoor air filters are not dirty and blocking air flow from the fan.

    Checking that the fan is not blocked and spinning freely is usually the most a homeowner can do before calling a professional.

    For more advanced troubleshooting the wiring voltage and PCB board will need to be checked.


     




     

    One thought on “How To Troubleshoot and Fix a Mini Split E8 Error Code

    1. nketiahwelbeck

      Hi,please what are some of the common faults on indoor and outdoor PBC board?

      Reply

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