P1
Midea P1 Error Code – Voltage Protection
Air Conditioner · HIGH Severity
What This Error Means
Over voltage or too low voltage protection
Diagnostic & Repair Steps
1
Check Supply Voltage
Measure incoming voltage at outdoor unit. Should be within 198–242V (or per spec).
Measure incoming voltage at outdoor unit. Should be within 198–242V (or per spec).
TEST
~10 min
2
Check for Voltage Fluctuations
Monitor voltage over several minutes. Instability can trigger P1.
Monitor voltage over several minutes. Instability can trigger P1.
TEST
~15 min
3
Check Wiring Connections
Inspect all power wiring connections at both indoor and outdoor units for looseness. ⚠️ Disconnect power first
Inspect all power wiring connections at both indoor and outdoor units for looseness. ⚠️ Disconnect power first
INSPECT
~10 min
4
Install Voltage Stabilizer
If supply voltage is unstable, recommend customer install a voltage stabilizer.
If supply voltage is unstable, recommend customer install a voltage stabilizer.
CHECK
~5 min
5
Replace Outdoor PCB
If voltage is normal but error persists, outdoor PCB voltage sensing circuit may be faulty.
If voltage is normal but error persists, outdoor PCB voltage sensing circuit may be faulty.
REPLACE
~30 min
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