Midea · Heat pump

PC02 Compressor top temperature protection

High severity Midea DLCURA ducted single-zone inverter heat pump (outdoor)

What the control is telling you

The compressor top (shell) temperature switch has tripped from overheating.

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

Likely causes

Low refrigerant charge
Restricted refrigerant flow
Poor airflow over outdoor coil
Faulty top-temperature switch or wiring

Test and repair steps

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.
Check outdoor coil cleanliness and fan operation.
Check refrigerant charge and look for leaks.
Check for refrigerant restrictions (kinked line set, clogged parts).
Check the compressor top switch and wiring; replace if faulty.

Settings for these units

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

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Source: Midea/Carrier DLCURA Installation Instructions (Catalog DLCURA-03SI), Table 11 Outdoor Unit Diagnostic Codes, p.19. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.