H7
Hisense
Compressor Position / Motor Drive Error (Inverter Models)
Indoor unit displays H7 and the outdoor unit may not start or may run at limited capacity.
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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 compressor, Inverter module unable to detect rotor position, Loose compressor wiring connector, Faulty outdoor PCB
How to Fix / Troubleshooting
Safety first: This is a complex inverter/compressor fault. Do not attempt to disassemble the compressor or inverter yourself.
- Step 1 – Power reset:
- Turn off power for 10–15 minutes and restart to rule out transient errors.
- Step 2 – Listen to compressor:
- When starting, listen for abnormal noises (loud humming, clicking, or no sound at all).
- Step 3 – Technician service:
- A technician must test compressor windings, inverter output, and control signals.
- Compressor or inverter replacement may be required.
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Repair Difficulty
Professional Required
5/5
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