The spray control cabinet prompts the reason why the No.2 pump is not online.

The spray control cabinet indicates that the No.2 pump is not online for the following reasons:

1 No.2 pump is not started or faulty: check whether No.2 pump is started, and if it is, check the working state of the pump to ensure the normal operation of the pump. If the No.2 pump is not started, check whether its power supply line is normal.

2.2 Pump controller failure: If the controller of Pump 2 fails, the control cabinet will not be able to detect Pump 2, resulting in offline display.

3. Communication failure: If the communication between the control cabinet and the No.2 pump fails, the control cabinet will display that the No.2 pump is not online.

The specific problems need to be comprehensively judged in combination with the specific model of the control cabinet, communication mode, working state of No.2 pump and other factors. If it cannot be solved by itself, it is best to contact professional technicians or service providers for maintenance.