Midea Error Code PC40: Main chip to compressor-driver chip communication error (Heat Pump)
Midea error code PC40 on a heat pump means: Main chip to compressor-driver chip communication error. It is also called Midea diagnostic code PC40.
Homeowner? What Midea code PC40 means for you
Call a technician Your heat pump is reporting: Main chip to compressor-driver chip communication error. 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 PC40 mean?
The outdoor main control chip has lost communication with the compressor driver chip.
Applies to: DLCURAH18-60 AAK/ABK single-zone heat pump outdoor units (18K-60K, regular and High Heat)
Common causes of Midea code PC40
- Outdoor board fault
- Loose internal connection between boards
Midea models that use code PC40
DLCURAH18AAKDLCURAH18ABKDLCURAH24AAKDLCURAH24ABKDLCURAH30AAKDLCURAH30ABKDLCURAH36AAKDLCURAH36ABKDLCURAH48AAKDLCURAH48ABKDLCURAH60AAKDLCURAH60ABK
Other Midea Heat Pump codes
All Midea Heat Pump error codes →
Midea code PC40: homeowner questions
What does Midea code PC40 mean?
Main chip to compressor-driver chip communication error. The outdoor main control chip has lost communication with the compressor driver chip.
Is it safe to keep using my heat pump with code PC40?
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 PC40 myself?
You can try one reset (power off for 30 seconds, then on). If Midea code PC40 comes back, the cause is still there and a licensed technician should check it.
Who can fix Midea code PC40 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.