Bryant Error Codes

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Published codes

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Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.

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68 published codes

Variable Capacity or Emergency Mode

Variable Capacity or Emergency Mode. Outdoor unit is operating in variable-capacity or emergency mode.

Communications Loss

Communications Loss. Communication with the control/UI has been lost.

Invalid Model

Invalid Model. Invalid model or model-plug information detected.

High Pressure Switch Open

High Pressure Switch Open. High-pressure switch is open; board indicates the event and retries after 15 minutes.

Low Pressure Trip

Low Pressure Trip. Low-pressure trip detected; board indicates the event and retries after 15 minutes.

Compressor Winding Fault

Compressor Winding Fault. Compressor winding fault detected.

Brownout Event

Brownout Event. Brownout event detected; control reverts to 5-minute cycle delay.

Lost Inverter Communications

Lost Inverter Communications. Inverter communication was lost.

230VAC Dropout-Reset Event

230VAC Dropout-Reset Event. 230VAC dropout/reset event detected; control reverts to 5-minute cycle delay.

Outdoor Air Temp Sensor Fault

Outdoor Air Temp Sensor Fault. Outdoor air temperature sensor fault detected.

Suction Temp Sensor Fault

Suction Temp Sensor Fault. Suction temperature sensor fault detected.

Coil Temp Sensor Fault

Coil Temp Sensor Fault. Coil temperature sensor fault detected.

OAT-OCT Thermistor Out of Range

OAT-OCT Thermistor Out of Range. Outdoor-air / outdoor-coil thermistor reading is out of range.

Suction Pressure Sensor Fault

Suction Pressure Sensor Fault. Suction pressure sensor fault detected.

Lost Inverter Communication Event

Lost Inverter Communication Event. Lost inverter communication event detected.

Compressor Scroll Temp Out of Range Event

Compressor Scroll Temp Out of Range Event. Compressor scroll temperature is out of range.

Compressor No Start

Compressor No Start. Compressor failed to start.

Compressor Sump Heater Active

Compressor Sump Heater Active. Compressor sump heater is active.

Inverter Internal Fault

Inverter Internal Fault. Internal inverter fault detected.

Compressor Motor Temp Out of Range Event

Compressor Motor Temp Out of Range Event. Compressor motor temperature is out of range.

Suction Over Temp Event

Suction Over Temp Event. Suction over-temperature event detected.

Inverter Temp Out of Range Event

Inverter Temp Out of Range Event. Inverter temperature is out of range.

Inverter Over Current Event

Inverter Over Current Event. Inverter over-current event detected.

Compressor No-Pump Event

Compressor No-Pump Event. No-pump condition detected at compressor.

Suction Over Temp Lockout

Suction Over Temp Lockout. Suction over-temperature lockout active for 4 hours.

Low Pressure Lockout For 4 Hours

Low Pressure Lockout For 4 Hours. Low-pressure lockout active for 4 hours.

High Pressure Lockout For 4 Hours

High Pressure Lockout For 4 Hours. High-pressure lockout active for 4 hours.

Compressor Temp Lockout

Compressor Temp Lockout. Compressor temperature lockout active for 4 hours.

Inverter Cable Fault

Inverter Cable Fault. Inverter cable fault detected.

Inverter VDC-Out Over Voltage Event

Inverter VDC-Out Over Voltage Event. Inverter VDC output over-voltage event detected.

Inverter VDC-Out Under Voltage Event

Inverter VDC-Out Under Voltage Event. Inverter VDC output under-voltage event detected.

230VAC Under Voltage Event

230VAC Under Voltage Event. 230VAC under-voltage event detected.

230VAC Over Voltage Event

230VAC Over Voltage Event. 230VAC over-voltage event detected.

High Current Lockout

High Current Lockout. High-current lockout active for 2 hours.

VDC Under Voltage Lockout

VDC Under Voltage Lockout. VDC under-voltage lockout active for 2 hours.

VDC Over Voltage Lockout

VDC Over Voltage Lockout. VDC over-voltage lockout active for 2 hours.

High Torque Event

High Torque Event. High-torque event detected.

High Torque Lockout

High Torque Lockout. High-torque lockout active for 2 hours.

solid

Standby

Standby. Unit is powered and in standby with amber LED on and no flash.

2s_on_1s_off

Variable Speed Range Cutback

Variable Speed Range Cutback. Amber LED pattern is 2 seconds on with a longer pause and 1 second off, indicating variable-speed range cutback.

Variable Capacity or Emergency Mode

Variable Capacity or Emergency Mode. Outdoor unit is operating in variable-capacity or emergency mode.

Communications Loss

Communications Loss. Communication with the control/UI has been lost.

Invalid Model

Invalid Model. Invalid model or model-plug information detected.

High Pressure Switch Open

High Pressure Switch Open. High-pressure switch is open; board indicates the event and retries after 15 minutes.

Low Pressure Trip

Low Pressure Trip. Low-pressure trip detected; board indicates the event and retries after 15 minutes.

Compressor Winding Fault (V9+) / Control Fault (V8 and earlier)

Compressor Winding Fault (V9+) / Control Fault (V8 and earlier). Compressor winding fault or general control fault detected.

Brownout Event

Brownout Event. Brownout event detected; control reverts to 5-minute cycle delay.

Lost Inverter Communications

Lost Inverter Communications. Inverter communication was lost.

230VAC Dropout-Reset Event

230VAC Dropout-Reset Event. 230VAC dropout/reset event detected; control reverts to 5-minute cycle delay.

Outdoor Air Temp Sensor Fault

Outdoor Air Temp Sensor Fault. Outdoor air temperature sensor fault detected.

Suction Temp Sensor Fault

Suction Temp Sensor Fault. Suction temperature sensor fault detected.

Coil Temp Sensor Fault

Coil Temp Sensor Fault. Coil temperature sensor fault detected.

OAT-OCT Thermistor Out of Range

OAT-OCT Thermistor Out of Range. Outdoor-air / outdoor-coil thermistor reading is out of range.

Suction Pressure Sensor Fault

Suction Pressure Sensor Fault. Suction pressure sensor fault detected.

Lost Inverter Communication Event (V9+) / Suction Thermistor Range Fault (V8 and earlier)

Lost Inverter Communication Event (V9+) / Suction Thermistor Range Fault (V8 and earlier). Communication or thermistor fault detected.

Compressor Scroll Temp Out of Range Event

Compressor Scroll Temp Out of Range Event. Compressor scroll temperature is out of range.

Compressor No Start

Compressor No Start. Compressor failed to start.

Compressor Sump Heater Active

Compressor Sump Heater Active. Compressor sump heater is active.

Inverter Internal Fault (V9+) / Inverter or Compressor Internal Fault (V8 and earlier)

Inverter Internal Fault (V9+) / Inverter or Compressor Internal Fault (V8 and earlier). Internal inverter or compressor fault detected.

Compressor Motor Temp Out of Range Event

Compressor Motor Temp Out of Range Event. Compressor motor temperature is out of range.

Suction Over Temp Event

Suction Over Temp Event. Suction over-temperature event detected.

Inverter Temp Out of Range Event

Inverter Temp Out of Range Event. Inverter temperature is out of range.

Inverter Over Current Event

Inverter Over Current Event. Inverter over-current event detected.

Compressor No-Pump Event

Compressor No-Pump Event. No-pump condition detected at compressor.

Suction Over Temp Lockout

Suction Over Temp Lockout. Suction over-temperature lockout active for 4 hours.

Low Pressure Lockout For 4 Hours

Low Pressure Lockout For 4 Hours. Low-pressure lockout active for 4 hours.

High Pressure Lockout For 4 Hours

High Pressure Lockout For 4 Hours. High-pressure lockout active for 4 hours.

Compressor Temp Lockout

Compressor Temp Lockout. Compressor temperature lockout active for 4 hours.

Inverter Cable Fault (V9+) / Compressor Lost Rotor or Temp Sensor Fault (V8 and earlier)

Inverter Cable Fault (V9+) / Compressor Lost Rotor or Temp Sensor Fault (V8 and earlier). Inverter cable or compressor sensor fault detected.

Inverter Temp Lockout (V8 and earlier)

Inverter Temp Lockout (V8 and earlier). Inverter temperature lockout active for 4 hours.

Inverter VDC-Out Over Voltage Event

Inverter VDC-Out Over Voltage Event. Inverter VDC output over-voltage event detected.

Inverter VDC-Out Under Voltage Event

Inverter VDC-Out Under Voltage Event. Inverter VDC output under-voltage event detected.

230VAC Under Voltage Event

230VAC Under Voltage Event. 230VAC under-voltage event detected.

230VAC Over Voltage Event

230VAC Over Voltage Event. 230VAC over-voltage event detected.

High Current Lockout

High Current Lockout. High-current lockout active for 2 hours.

VDC Under Voltage Lockout

VDC Under Voltage Lockout. VDC under-voltage lockout active for 2 hours.

VDC Over Voltage Lockout

VDC Over Voltage Lockout. VDC over-voltage lockout active for 2 hours.

High Torque Event

High Torque Event. High-torque event detected.

High Torque Lockout

High Torque Lockout. High-torque lockout active for 2 hours.

solid

Standby

Standby. Unit is powered and in standby with amber LED on and no flash.

2s_on_1s_off

Variable Speed Range Cutback

Variable Speed Range Cutback. Amber LED pattern is 2 seconds on with a longer pause and 1 second off, indicating variable-speed range cutback.

No Previous Code

No Previous Code. Stored status code is erased automatically after 72 hours or when power to the control is interrupted.

Blower On After Power Up

Blower On After Power Up. Blower runs for 90 seconds if the furnace is powered during a call for heat or if the heat call opens during blower on-delay.

Limit Circuit Lockout

Limit Circuit Lockout. Lockout occurs if the limit or flame rollout switch stays open longer than 3 minutes; control auto-resets after 3 hours.

Ignition Lockout

Ignition Lockout. Control auto-resets after 3 hours after repeated ignition-proving failures.

Gas Heating Lockout

Gas Heating Lockout. Gas heating lockout; control will not auto-reset. Check missed gas valve or defective control/valve relay.

Abnormal Flame-Proving Signal

Abnormal Flame-Proving Signal. Flame is proved while gas valve is de-energized. Check for leaky or stuck-open gas valve.

Pressure Switch Did Not Open

Pressure Switch Did Not Open. Check for obstructed pressure tubing or pressure switch stuck closed.

Secondary Voltage Fuse Is Open

Secondary Voltage Fuse Is Open. Check for short circuit in secondary voltage 24 VAC wiring.

Pressure Switch Did Not Close or Reopened

Pressure Switch Did Not Close or Reopened. If open longer than 5 minutes, inducer shuts off for 15 minutes before retry. Check venting, inducer, switch, tubing, combustion air, wind, and inlet gas pressure if LPGS is used.

Limit Circuit Fault

Limit Circuit Fault. Indicates a limit or flame rollout is open. If open longer than 3 minutes, code changes to lockout #13.

Ignition Proving Failure

Ignition Proving Failure. Control retries three times before lockout #14. Check flame sense, ground continuity, gas supply, HSI, and flame carryover.

Control Circuitry Lockout

Control Circuitry Lockout. Auto-reset after one hour for gas valve relay stuck open, flame sense circuit failure, or software check error. Reset power to clear if code repeats.

Indoor Unit EEPROM Parameter Error

Indoor Unit EEPROM Parameter Error. Indoor unit main chip does not receive feedback from the EEPROM chip; installation or PCB fault suspected.

Indoor / Outdoor Units Communication Error

Indoor / Outdoor Units Communication Error. Indoor unit does not receive feedback from outdoor unit during 110 seconds and this happens four times continuously; wiring or indoor/outdoor PCB fault suspected.

Zero-Crossing Signal Detection Error

Zero-Crossing Signal Detection Error. PCB does not receive zero-crossing signal feedback for 4 minutes or the interval is abnormal; connection or PCB fault suspected.

Indoor Fan Speed Has Been Out of Control

Indoor Fan Speed Has Been Out of Control. Indoor fan speed remains too low (300 RPM) for a certain time and the unit stops; wiring, fan assembly/motor, or PCB fault suspected.

Indoor Room Temperature Sensor T1 Open or Short

Indoor Room Temperature Sensor T1 Open or Short. Indoor room temperature sensor T1 is open-circuit or short-circuit.

Evaporator Coil Temperature Sensor T2 Open or Short

Evaporator Coil Temperature Sensor T2 Open or Short. Evaporator coil temperature sensor T2 is open-circuit or short-circuit.

Refrigerant Leakage Detection

Refrigerant Leakage Detection. If coil temperature behavior indicates leakage after compressor start, the display shows EC and the unit turns off; sensor, PCB, leakage, or blockage may be involved.

Overload Current Protection

Overload Current Protection. Abnormal current rise detected by the current-detection circuit; power supply, blockage, wiring, PCB, or compressor may be involved.

Outdoor Ambient Temperature Sensor T4 Open or Short

Outdoor Ambient Temperature Sensor T4 Open or Short. Outdoor ambient temperature sensor T4 is open-circuit or short-circuit.

Condenser Coil Temperature Sensor T3 Open or Short

Condenser Coil Temperature Sensor T3 Open or Short. Condenser coil temperature sensor T3 is open-circuit or short-circuit.

Compressor Discharge Temperature Sensor T5 Open or Short

Compressor Discharge Temperature Sensor T5 Open or Short. Compressor discharge temperature sensor T5 is open-circuit or short-circuit.

Outdoor Unit EEPROM Parameter Error

Outdoor Unit EEPROM Parameter Error. Outdoor unit main chip does not receive feedback from the EEPROM chip; installation or PCB fault suspected.

Outdoor Fan Speed Has Been Out of Control

Outdoor Fan Speed Has Been Out of Control. Outdoor fan speed is out of control.

IPM Malfunction or IGBT Over-Strong Current Protection

IPM Malfunction or IGBT Over-Strong Current Protection. Voltage signal from the IPM to the compressor drive chip is abnormal; wiring, IPM, outdoor fan, compressor, or outdoor PCB may be involved.