Aircon Error Codes
Staff Writer
June 4, 2024
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The Bryant heating and cooling systems provide year-round temperature control in your home. However, issues such as a defective hot surface ignitor or a defective blower motor can cause your Bryant furnace air conditioning system to stop working.
Before you can troubleshoot your Bryant furnace AC system, you will need to understand the error codes that indicate a faulty gas valve, clogged filter, or pressure switch failure to proceed to the necessary troubleshooting steps. Check your owner's manual, or refer to our full error code list below:
Bryant Furnace Troubleshooting Codes
Flashing LED Lights: Furnace Error Codes
Tri-color LED Error Codes
| Error Code | Meaning |
|---|---|
| GREEN LED4 ON. | Furnace is operating in low heat. |
| RED LED1 ON. | Furnace is operating in emergency heat. |
| RED LED2 FLASHING. | Line voltage polarity is reversed. |
| RED LED2 ON. | The microprocessor has malfunctioned. To reset: Put setup switch "SW-1" in the "ON" position and jumper thermostat terminals "R", "W/W1" and "Y/Y2" simultaneously with the door switch pushed in and power to the unit "ON". Disconnect jumper and place setup switch in the "OFF" position. If LED2 reappears, replace the main control board. |
| YELLOW LED3 ON. | Furnace is operating in high heat. |
Amber LED Lights Error Codes
| Error Code | Meaning |
|---|---|
| ON, No Flash | Standby |
| 1, Pause | Variable Capacity |
| 1 (2 Sec ON), Longer Pause (1 Sec OFF) | Variable Capacity (Range Cutback) |
| 16 | System Communications Failure |
| 25 | Invalid Model Plug/ Inverter Size |
| 31 | High Pressure Switch Open (stage/speed down for each occurrence, elevates to faultcode 84 when it occurs while running on the lowest stage) |
| 32 | Low Pressure Trip (Elevates to Fault Code 83 after 3 Occurrences |
| 33 | Lost Inverter Communications (Occurs after 2 minutes of no communication between AOC and MOC, Elevates to fault code 48 after 3 consecutive failures in within 20 mins or 20 mins of continuous loss of connection |
| 45 | Control Fault |
| 46 | Brownout Event |
| 47 | No 230v at Unit |
| 48 | Lost Inverter Communications (Elevated from fault code 33 after 3 occurrences) |
| 49 | Compressor Overcurrent Fault (Elevates to Fault code 95 after 5 occurrences) |
| 53 | Outdoor Air Temperature Sensor Fault |
| 54 | Suction Temperature Sensor Fault |
| 55 | Coil Temperature Sensor Fault |
| 56 | OAT-OCT Thermistor Out of Range |
| 57 | Suction Pressure Sensor Fault |
| 59 | Discharge Temperature Out of Range Event ( Elevates to fault code 74 after 5 occurrences) |
| 61 | Fan Inverter Fault (Elevates to Fault Code 76 after 5 occurrences) |
| 62 | Fan Inverter Temperature High ( Elevates to Fault Code 85 after 3 occurrences) |
| 63 | Fan Inverter Current Fault (Elevates to Fault Code 86 after 5 occurrences |
| 65 | DC Volts Low - Speed Limiting |
| 66 | Outdoor Fan Dropped Out |
| 67 | Stator Heater Fault |
| 68 | 10 Min Stage 2 Warmup Delay |
| 69 | Inverter/Compressor Internal Fault ( Elevates to this fault code after 5 occurrences of itself) |
| 71 | Compressor Dropped Out |
| 72 | Suction Over Temperature Event ( Elevates to Fault Code 82 after 3 occurrences) |
| 73 | Contactor Shorted |
| 74 | Discharge Temperature Out of Range Lockout ( Elevated from fault code 59 after 5 occurrences) |
| 75 | Maximum Power Mode - Temp (Temporary RPM Reduction or stage lowering will result) |
| 76 | Fan Inverter Lockout (Elevated from Fault Code 61 after 5 occurrences) |
| 77 | Maximum Power Mode - Comp Current (Temporary RPM Reduction or stage lowering will result) |
| 79 | Compressor/Inverter Fault (Elevates to Fault Code 88 after 5 occurrences) |
| 81 | Low Stage Thermal Lockout |
| 82 | Suction over Temperature Lockout (Elevated from Fault Code 72 after 3 occurrences) |
| 83 | Low Pressure Lockout for 4 hours (Elevated from fault code 32 after 3 occurrences) |
| 84 | High Pressure Lockout for 4 Hours (Elevated from fault code 31 after stage (speed) can no longer be lowered) |
| 85 | Fan Inverter Temperature Lockout (Elevated from Fault Code 62 after 3 occurrences) |
| 86 | Fan Inverter Current Lockout (Elevated from Fault Code 63 after 5 occurrences) |
| 88 | Compressor/Inverter Lockout (Elevated from Fault Code 79 after 5 occurrences) |
| 91 | Inverter VDC-Out Over Voltage Event (Elevates to Fault Code 97 after 5 occurrences) |
| 92 | Inverter VDC-Out under Voltage Event (Elevates to Fault Code 96 after 5 occurrences) |
| 93 | 230 VAC Under Voltage Event |
| 94 | 230 VAC Over Voltage Event |
| 95 | Compressor Over Current Lockout (Elevated from Fault Code 49 after 5 occurrences |
| 96 | VDC Under Voltage Lockout ( Elevated from Fault Code 92 after 5 occurrences) |
| 97 | VDC Overvoltage Lockout (Elevated from Fault Code 91 after 5 occurrences) |
| 98 | High Torque Event (Event will cause stage down, and when stage is at lowest level, it will elevate to Fault Code 99) |
| 99 | High Torque Lockout (Elevated from Fault Code 98 when 98 occurs at lowest level) |
| On solid, no flash | Standby - no call for unit operation |
| 1, pause | Low---stage Cool/Heat Operation |
| 2, pause | High-stage Cool/Heat Operation |
Bryant Furnace Error Codes
| Error Code | Meaning |
|---|---|
| 12;44 | There's a fault with the blower calibration |
| 13 | Problem with the limit switch being tripped (furnace will auto reset after three hours) |
| 14 | Ignition problem (control will auto reset after three hours) |
| 23 | Problem with the blower airflow selection |
| 34 | The ignition process isn't working properly |
| 41 | The blower isn't operating at the right revolutions per minute |
| 43 | There's a fault with the pressure switch calibration |
| 45 | Lockout because of a problem with the control circuitry (furnace will auto reset after an hour) |
| 03-Apr | Failed ignition due to faulty flame sensor, faulty gas valve or low inlet gas pressure. |
| 03-Mar | The limit or flame rollout switch is open. |
| 04-May | Flame sensor circuit failure |
Check out our articles on Bryant aircon troubleshooting.
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