KeepRite Error Code 31: High pressure switch open (AC)
KeepRite error code 31 on a air conditioner means: High pressure switch open. It is also called KeepRite diagnostic code 31.
Homeowner? What KeepRite code 31 means for you
Call a technician Your air conditioner is reporting: High pressure switch open. The air conditioner 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.
- Keep about 2 feet around the outdoor unit clear of leaves, grass and debris.
- If you see ice on the pipes or the indoor coil, turn the system off and run only the fan for a few hours, then call a technician.
- 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 KeepRite error code 31 mean?
The high-pressure switch (two-stage: or discharge temperature switch) opened. The compressor stops, the outdoor fan keeps running up to 15 minutes, then a restart is tried.
Applies to: KeepRite C4A3/CXA6 AC with outdoor control board; *SA5/*SA6 AC and *SH4/*SH5/*SH6 HP single-stage communicating; *CA7/*CA9 AC and *CH6/*CH9 HP two-stage communicating
Common causes of KeepRite code 31
- Overcharge
- Outdoor fan not running
- Dirty or blocked outdoor coil (cooling)
A technician checks these and 1 other possible causes on site before replacing any part.
KeepRite models that use code 31
*CA624*CA636*CA648*CA660*CA924*CA936*CA948*CA960*SA5*SA6C4A3CXA6
Other KeepRite AC codes
All KeepRite Air Conditioner error codes →
KeepRite code 31: homeowner questions
What does KeepRite code 31 mean?
High pressure switch open. The high-pressure switch (two-stage: or discharge temperature switch) opened. The compressor stops, the outdoor fan keeps running up to 15 minutes, then a restart is tried.
Is it safe to keep using my air conditioner with code 31?
It depends on the cause. The air conditioner 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 KeepRite code 31 myself?
You can try one reset (power off for 30 seconds, then on). If KeepRite code 31 comes back, the cause is still there and a licensed technician should check it.
Who can fix KeepRite code 31 near me?
Aurora Star Tech Inc. repairs KeepRite air conditioners 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
Troubleshooting guides
- Not cooling All brands · Air Conditioner
- Checking OAT and OCT thermistors - KeepRite C4A3/CXA6 KeepRite · Air Conditioner
Source: KeepRite/ICP C4A3/H4A3/T4A3/CXA6 Installation Instructions 421 01 5103 05, Table 1 Status Codes, p.17; KeepRite_ICP_KeepRite_Tempstar_Heil_split_A_C_HP_R_410A_R_22_service_421_08_5400_04.txt - section Table 13 Status Codes (single-stage); KeepRite_ICP_KeepRite_Tempstar_Heil_split_A_C_HP_R_410A_R_22_service_421_08_5400_04.txt - section Table 17 Troubleshooting (two-stage). 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.