Midea · Heat pump

EC71 Outdoor DC fan motor over-current

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

What the control is telling you

The outdoor fan motor is drawing too much current.

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

Likely causes

Fan blade binding or blocked
Ice buildup on fan
Failing fan motor bearings/windings
Board fault

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 the fan blade spins freely by hand and is not rubbing the shroud.
Clear ice, snow or debris from the fan and coil.
Check the fan motor wiring for shorts.
Replace the fan motor if it binds or the fault returns; if a new motor does not fix it, replace the outdoor board.

Settings for these units

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

Save it for the next call

Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.

Open the app

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.