SPRSUN
Fan Speed Control Issue
Compressor runs but fan cycles on and off frequently or runs at inconsistent speeds (on inverter models).
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty fan speed control circuit on PCB, Incorrect inverter fan output, Failing ECM fan motor, Poor electrical connections
How to Fix / Troubleshooting
Safety first: Turn off power before accessing electrical components.
- Observe behavior: Note whether fan speed changes correspond to load changes (which can be normal on inverter models) or are erratic.
- Check connections: Inspect the fan motor plug and any speed control connectors on the main or inverter PCB for secure fit.
- Clean electronics area: Remove dust and debris from the control compartment to improve cooling of electronic components.
- Technician diagnosis: If fan speed remains erratic and causes poor performance or noise, a technician should test the ECM fan motor and fan control circuitry.
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Repair Difficulty
Hard
4/5
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