KeepRite *SA6 Error Codes

Updated October 13, 2026 · by Aurora Star Tech Inc.

KeepRite *SA6 error codes and diagnostic codes. The *SA6 is a KeepRite air conditioner in the KeepRite *SA/*SH Single-Stage Communicating series.

Homeowner with a air conditioner problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

KeepRite *SA6 error codes list

Code	Meaning	Severity
16	Lost communication with wall control	Medium
31	High pressure switch open	High
32	Low pressure switch open	High
45	Outdoor control board failure	High
46	Brown-out (low voltage)	Medium
53	Outdoor air temperature sensor fault	Medium
55	Outdoor coil sensor fault	Medium
56	Air and coil sensors disagree	Medium
72	Compressor thermal cutout (two-stage: high stage)	High
73	Contactor stuck closed	High
74	No 230 V at compressor	High
82	Thermal lockout (two-stage: high stage)	High
83	Low pressure lockout	High
84	High pressure lockout	High

Troubleshooting the *SA6

Not cooling All brands · Air Conditioner
Checking OAT and OCT thermistors - KeepRite C4A3/CXA6 KeepRite · Air Conditioner

All KeepRite Air Conditioner error codes →

Homeowner help: AC Running But Not Cooling: What to Check

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.

KeepRite *SA6 error codes list

Troubleshooting the *SA6

Experience an Energy-Efficient Thermostat in Ajax Today