ERR-INV
Midea ERR-INV Error Code – Inverter Module Protection
Air Conditioner · CRITICAL Severity
What This Error Means
Inverter module protection activated
Diagnostic & Repair Steps
1
Power Off Immediately
Switch off at breaker.
Switch off at breaker.
RESET
~2 min
2
Inspect Inverter Module
Check for burn marks or damage. ⚠️ Wait 10 min after power off
Check for burn marks or damage. ⚠️ Wait 10 min after power off
INSPECT
~15 min
3
Check Refrigerant Charge
Incorrect charge stresses inverter. ⚠️ Certified technician only
Incorrect charge stresses inverter. ⚠️ Certified technician only
TEST
~20 min
4
Check Compressor Windings
Measure resistance.
Measure resistance.
TEST
~20 min
5
Replace Inverter Module/PCB
Replace faulty component.
Replace faulty component.
REPLACE
~45 min
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