Midea MOX630U-55HFN8-RRD0WGA - FL 09(Indoor and Outdoor Mismatch Malfunction Diagnosis and Solution); PC 0 L (Low Ambient Temperature Protection); PC 45 (Outdoor Unit IR Chip Drive Failure Diagnosis and Solution)

Troubleshooting
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8.18 PC 45 (Outdoor unit IR chip drive failure diagnosis and solution)
Description: When the IR chip detects its own parameter error, the LED displays the failure code when power on.
Recommended parts to prepare:
• Inverter module PCB.
Troubleshooting and repair:
Power off,then restart the unit
2 minutes later.
Replace the inverter module
PCB.
Yes
8.19 PC 0L (Low ambient temperature protection)
Description: It is a protection function. When compressor is off, outdoor ambient temperature(T4) is lower than -35
o
C.
for 10s, the AC will stop and display the failure code.
When compressor is on, outdoor ambient temperature(T4) is lower than -40
o
C.for 10s, the AC will stop and display the
failure code.
When outdoor ambient temperature(T4) is no lower than -32
o
C.for 10s, the unit will exit protection.
8.20 FL 09(Indoor and outdoor mismatch malfunction diagnosis and solution)
Description: Indoor and outdoor units are mismatched, the LED displays this code. Please replace the matching indoor
or outdoor unit..