Fault action

1 Display fault

2 Stop all outputs except the water pump first, and stop the water pump output 5 minutes after locking

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 Whether the A0 or A3 plug and wiring are reliable

4 Check or replace the A0/A3 temperature sensor, check or replace the control motherboard

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