PC06 Compressor discharge temperature protection

What the control is telling you

Discharge temperature is too high, so the compressor is stopped to protect it.

Applies to: DLCURAH18-60 AAK/ABK single-zone heat pump outdoor units (18K-60K, regular and High Heat)

Likely causes

• Low refrigerant charge / leak
• Refrigerant restriction
• Poor outdoor airflow
• Faulty TP sensor reading high

Test and repair steps

1. Warning: Turn off and lock out power at the outdoor disconnect and wait for the inverter capacitors to discharge before touching the outdoor board or compressor wiring.
2. Check charge and leak-test the system.
3. Check the outdoor coil and fan.
4. Check the line set for kinks or restrictions; check line length vs. charge (18K: 24.6 ft before adding charge, 0.69 oz/ft beyond).
5. Check the TP sensor is attached to the discharge line and reads correctly.

Settings for these units

Outdoor unit minimum clearances · Midea DLCURA ducted single-zone inverter heat pump (outdoor)

Side letters taken from Fig. 8 drawing.

Units facing each other: 59 in. (150 cm) or more; do not blow into another unit's inlet.

Models that show this code

12 models in Midea DLCURA ducted single-zone inverter heat pump (outdoor)

Other codes on the same units

• PC0A Condenser high temperature protection
• PC0F PFC module protection
• PC0L Outdoor unit low-temperature protection
• PC02 Compressor top temperature protection
• PC08 Outdoor over-current protection
• PC10 Outdoor low AC voltage protection
• PC11 Outdoor DC bus high voltage protection
• PC12 DC bus high voltage protection / 341 MCE error