Error Code Pb
Summary:
Outdoor DC motor module protection
Possible Cause:
- The speed of DC motor is abnormal
- Outdoor DC motor fault
- Communication fault between DC motor DC Fan Module and Main Board
Troubleshooting:
- Verify that CN10 and CN2 are connected and/or connected securely - Correct connection
- Verify the communication wire between the DC motor DC Fan Module and the Main Board (CN4 to CN42) - Correct connection
- Is the communication wire open - Replace the wiring
- Is the motor wires open or is the motor faulty - Replace the motor
- Verify the fan blade for imbalance or not rotating properly - Replace the fan blade
Below you can download the wiring diagram for 460V or 230V
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.