Bryant air conditioners heat pumps error codes

Table shows the status codes flashed by the amber status light. Most system problems can be diagnosed by reading the status code as flashed by the amber status light on the control board. The codes are flashed by a series of short and long flashes of the status light. The short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the error code.

Bryant air conditioners heat pumps error codes

OperationFaultAmber led flash codePossible cause and action
Standby - no call for unit operationNoneOn solid, no flashNormal operation
Emergency Mode - Model 288ANA/180ANA onlyStandart Thermostat Control 288ANA/180ANA onlyRapid continuous flashingUnit being controlled by standart thermostat inputs instead of Evolution Control.
Only high stage operation is aveliable. This operating mode should be used in emergency situations only.
Low Stage Cool/Heat OperationNone1, pauseNormal operation
High Stage Cool/Heat OperationNone2, pauseNormal operation
System Communications Failure16
Communication with User Interface lost. Check wiring to UI, indoor and outdoor units
Invalid Model Plug25Control does not detect a model plug or detects an invalid model plug. Unit will not operate without correct model plug.
High Pressure Switch Open31High - pressure switch trip. Check refrigerant charge, outdoor fan operating and coils for airflow restrictions.
Low Pressure Switch Open32Low - pressure switch trip. Check refrigerant charge and indoor air flow.
Control Fault45Outdoor unit control board has failed. Control board needs to be replaced.
Brown Out (230v)46Line voltage < 187v for at least 4 seconds. Compressor and fan operation not allowed unit voltage >= 190v. Verify line voltage.
No 230v at
Unit Measured at L1 and L2 on circuit board
47There is no 230v at the contactor when indoor unit is powered and cooling/heating demand exists. Verify the disconnect is closed and 230v wiring is connected to the unit.
Outdoor Air Temp Sensor Fault53Outdoor air sensor not reading or out of range. Ohm out sensor and check wiring.
Outdoor Coil Sensor Fault55Coil sensor not reading or out of range. Ohm out sensor and check wiring.
Thermistors out of range56Improper relationship between coil sensor and outdoor air sensor. Ohm out sensor and check wiring.
Low Stage Thermal Cutout71Compressor operation detected then disappears while low stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long (if installed)
High Stage Thermal Cutout72Compressor operation detected then disappears while high stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long (if installed)
Contactor Shorted73Compressor voltage sensed when no demand for compressor operation exists. Contactor may be stuck closed or there is a wiring error.
No 230v at Compressor (288ANA Only)74Compressor voltage not sensed when compressor should be starting. Contactor may be stuck open or there is a wiring error.
Low Stage Did Not Start (286ANA Only)75Specified start voltage at VR terminal was not achieved in low stage. Start relay was de-energized after 1 second.
Low Stage Did Not Start 3 times(286ANA Only)76For 3 consecutive low stage starts, the specified start voltage at VR terminal was not achieved and start relay was de-energized. Low stage locked out for 30 minutes.
High Stage Did Not Start (286ANA Only)77Specified start voltage at VS terminal was not achieved in high stage. Start relay was de-energized after 1 second.
High Stage Did Not Start 3 times(286ANA Only)78For 3 consecutive high stage starts, the specified start voltage at VS terminal was not achieved and start relay was de-energized. High stage locked out for 30 minutes.
Low Stage Thermal Lockout81Thermal cutout occurs in three consecutive low/high stage cycles. Low stage locked out 4 hours or until 24v power recycled.
High Stage Thermal Lockout82Thermal cutout occurs in three consecutive high/low stage cycles. High stage locked out 4 hours or until 24v power recycled.