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KeepRite *SH4 Error Codes

Updated · by Aurora Star Tech Inc.

KeepRite *SH4 error codes and diagnostic codes. The *SH4 is a KeepRite heat pump in the KeepRite *SA/*SH Single-Stage Communicating series.

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

KeepRite *SH4 error codes list

CodeMeaningSeverity
16Lost communication with wall controlMedium
31High pressure switch openHigh
32Low pressure switch openHigh
45Outdoor control board failureHigh
46Brown-out (low voltage)Medium
53Outdoor air temperature sensor faultMedium
55Outdoor coil sensor faultMedium
56Air and coil sensors disagreeMedium
72Compressor thermal cutout (two-stage: high stage)High
73Contactor stuck closedHigh
74No 230 V at compressorHigh
82Thermal lockout (two-stage: high stage)High
83Low pressure lockoutHigh
84High pressure lockoutHigh

Troubleshooting the *SH4

All KeepRite Heat Pump error codes →

Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air

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.

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