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Midea · Mini-split

J0 Outdoor coil overheat in cooling

Medium severity Midea DLCM(R/H)B multi-zone outdoor

What the control is telling you

Same fault as PC0A. Shown on the 48K high heat model.

Applies to: DLCMHBH48EAK (48K high heat) only

Test and repair steps

  1. Safety kill power at the disconnect and wait for the inverter capacitors to discharge before touching boards or wiring.
  2. Check the condenser (T3) sensor connection and resistance (about 10 kOhm at 77 F).
  3. If outdoor air is above 122 F (50 C), the unit is outside its range: shut it down.
  4. Check outdoor airflow, clean the coil, and make sure the outdoor fan runs (see EC07 if not).
  5. Check the charge. If low, find the leak and add refrigerant. If all good, replace the outdoor main board.

Models that show this code

7 models in Midea DLCM(R/H)B multi-zone outdoor

DLCMHBH24CAKDLCMHBH30DAKDLCMHBH36DAKDLCMHBH48EAKDLCMRBH18BAKDLCMRBH36DAKDLCMRBH48EAK

Other codes on the same units

  • F3 Discharge sensor (T5) fault
  • F4 Outdoor EEPROM error
  • F5 Outdoor fan speed out of control
  • FL14 Indoor and outdoor units not compatible
  • J1 Indoor coil temperature protection in heating
  • J2 Discharge temperature protection
  • J3 PFC module protection
  • J4 Main board to IPM board communication error

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Source: DLCMRBH/DLCMHBH Multi-Zone Outdoor Service Manual (sold as Midea, Carrier and Viessmann Vitocal 200-S; Viessmann doc 6225551-03, 12/2024), Table 24 Outdoor Unit Error Display (48 High Heat only) p.27; diagnosis p.67. 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.