Midea Error Code PC31: System low pressure protection (Heat Pump)
Midea error code PC31 on a heat pump means: System low pressure protection. It is also called Midea diagnostic code PC31.
Homeowner? What Midea code PC31 means for you
Call a technician Your heat pump is reporting: System low pressure protection. The heat pump has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
- Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
- In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
- Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Midea error code PC31 mean?
System low pressure dropped below the limit and the compressor stopped.
Applies to: DLCURAH18-60 AAK/ABK single-zone heat pump outdoor units (18K-60K, regular and High Heat)
Common causes of Midea code PC31
- Low refrigerant charge / leak
- Service valve not fully open
- Restriction
A technician checks these and 1 other possible causes on site before replacing any part.
Midea models that use code PC31
DLCURAH18AAKDLCURAH18ABKDLCURAH24AAKDLCURAH24ABKDLCURAH30AAKDLCURAH30ABKDLCURAH36AAKDLCURAH36ABKDLCURAH48AAKDLCURAH48ABKDLCURAH60AAKDLCURAH60ABK
Other Midea Heat Pump codes
All Midea Heat Pump error codes →
Midea code PC31: homeowner questions
What does Midea code PC31 mean?
System low pressure protection. System low pressure dropped below the limit and the compressor stopped.
Is it safe to keep using my heat pump with code PC31?
It depends on the cause. The heat pump has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.
Can I reset Midea code PC31 myself?
You can try one reset (power off for 30 seconds, then on). If Midea code PC31 comes back, the cause is still there and a licensed technician should check it.
Who can fix Midea code PC31 near me?
Aurora Star Tech Inc. repairs Midea heat pumps in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air
Source: Midea/Carrier DLCURA Installation Instructions (Catalog DLCURA-03SI), Table 11 Outdoor Unit Diagnostic Codes, p.19. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.