The error code BL in a Carrier split air conditioner typically indicates a fault with the blower motor or blower motor control. The blower motor is responsible for circulating the conditioned air throughout the room or space.
When the error code BL is displayed on the temperature display area, it usually means that there is a problem with the blower motor or its control circuit. This can be caused by various factors, such as a faulty blower motor, a malfunctioning control board, a loose connection, or an electrical issue.
To resolve the issue, you can try the following steps:
Turn off the air conditioner: Switch off the power to the air conditioner to prevent any further damage or accidents during the troubleshooting process.
Check the blower motor: Inspect the blower motor for any visible signs of damage or obstruction. Ensure that the blower wheel is not blocked by debris, and the motor spins freely.
Check the wiring and connections: Examine the wiring and connections between the blower motor, control board, and other relevant components. Look for any loose, damaged, or disconnected wires. If you find any issues, secure the connections or replace damaged wiring.
Reset the unit: After checking the motor and connections, reset the air conditioner by turning off the power for a few minutes and then turning it back on. This reset may clear minor glitches or temporary faults.
Contact a professional: If the error code persists or you are unsure about troubleshooting the issue yourself, it's recommended to contact a qualified technician or Carrier customer support. They will have the expertise to diagnose and repair the specific problem with the blower motor or control circuit.
Remember, error codes can vary depending on the specific model and version of the Carrier air conditioner. Consulting the user manual or contacting Carrier's customer support can provide you with accurate and model-specific information regarding the error code BL and its troubleshooting steps.