Fault action

1 Display fault

2 Stop all outputs except the water pump first, and stop the water pump output after 20 minutes

Fault handling

1 Check whether the water pump is running normally and whether there is water shortage

2 Check whether the water flow is normal, whether the water circuit is connected in reverse, and whether the flow is large enough

3 Check whether the flow switch is normal, whether the IN3 plug and wiring are reliable‍