Disclaimers

  1. This page provides a simple explanation concerning content relating to error codes and their possible causes. Please note that the content may slightly differ depending on models.

  2. 212 HVAC assumes no responsibility for any accidents or troubles caused in the disassembly or repair of equipment performed according to information on this page.

Caution

If molded case circuit breakers or earth leakage circuit breakers have tripped, do not reset the breaker immediately without first checking for any problems with insulation of equipment.

Resetting breakers without a check of insulation may cause damage to equipment.

bryant

Bryant air conditioning codes

CODE: On solid, no flash

RESULT: None.
FIX: Normal operation.

CODE: Rapid continuous flashing

RESULT: Standard Thermostat Control 288ANA/180ANA only.
FIX: Unit being controlled by standard thermostat inputs instead of Evolution Control. Only high stage operation is aveliable. This operating mode should be used in emergency situations only.

CODE: 1 pause

RESULT: None
FIX: Normal operation.

CODE: 2 pause

RESULT: None
FIX: Normal operation.

CODE: 16

RESULT:  System Communications Failure.
FIX: Communication with User Interface lost. Check wiring to UI, indoor and outdoor units.

CODE: 25

RESULT: Invalid Model Plug.
FIX: Control does not detect a model plug or detects an invalid model plug. Unit will not operate without correct model plug.

CODE: 31

RESULT: High Pressure Switch Open.
FIX: High – pressure switch trip. Check refrigerant charge, outdoor fan operating and coils for airflow restrictions.

CODE: 32

RESULT: Low Pressure Switch Open.
FIX: Low – pressure switch trip. Check refrigerant charge and indoor air flow.

CODE: 45

RESULT: Control Fault.
FIX: Outdoor unit control board has failed. Control board needs to be replaced.

CODE: 46

RESULT: Brown Out (230v).
FIX:  Line voltage < 187v for at least 4 seconds.

CODE: 47

RESULT: No 230v at Unit Measured at L1 and L2 on circuit board.
FIX:  There is no 230v at the contactor when indoor unit is powered and cooling/heating demand exists.

CODE: 53

RESULT: No Outdoor Air Temp Sensor Fault.
FIX:  There is no 230v at the contactor when indoor unit is powered and cooling/heating demand exists.Outdoor air sensor not reading or out of range.

CODE: 55

RESULT: No Outdoor Coil Sensor Fault.
FIX:  Coil sensor not reading or out of range. Ohm out sensor and check wiring.

CODE: 56

RESULT: Thermistors out of range.
FIX:  Improper relationship between coil sensor and outdoor air sensor. Ohm out sensor and check wiring.

CODE: 71

RESULT: Low Stage Thermal Cut out.
FIX:  Compressor 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.

CODE: 72

RESULT: High Stage Thermal Cut out.
FIX:  Compressor 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.

CODE: 73

RESULT:  Contactor Shorted.
FIX:  Compressor voltage sensed when no demand for compressor operation
exists. Contactor may be stuck closed or there is a wiring error.

CODE: 74

RESULT:  No 230v at Compressor.
FIX:  Compressor voltage not sensed when compressor should be starting.
Contactor may be stuck open or there is a wiring error.

CODE: 75

RESULT:  Low Stage Did Not Start.
FIX:  Specified start voltage at VR terminal was not achieved in low stage. Start relay was de-energized after 1 second.

CODE: 76

RESULT:  Low Stage Did Not Start 3 times.
FIX:  For 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.

CODE: 77

RESULT: High Stage Did Not Start. times.
FIX:  Specified start voltage at VS terminal was not achieved in high stage. Start relay was de-energized after 1 second.

CODE: 78

RESULT: High Stage Did Not Start 3 times.
FIX:  For 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.

CODE: 81

RESULT:  Low Stage Thermal Lockout.
FIX:  Thermal cutout occurs in three consecutive low/high stage cycles. Low stage locked out 4 hours or until 24v power recycled.

CODE: 82

RESULT:  High Stage Thermal Lockout.
FIX:   Thermal Lockout occurs in three consecutive high/low stage cycles. High stage locked out for 4 hours or until 24V power recycled.

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