Warning E10: communication beween water-quality Inspection Board and mainboard of main console is abnormal
a) This failure means the “communication abnormality of water quality testing board”.
b) This failure will be alarmed after startup and is unable to be eliminated. Take apart the instrument back shell and then check the states of “main control board D24 of main console” and “water quality monitoring board D4”.
| State of Main Control Board of main console D24 | State of Water Quality Monitoring Board D4 | Overhaul Plan |
| Flickering | Flickering | Check the wiring harness of main control board of main console J4; try replacing the main control board of main console. |
| Flickering | Off | Check the wiring harness of main control board of main console J4; try replacing the water quality testing board. |
| Off | Off | Replace the main control board of main console. |
c) If this failure is a random failure, check whether there is virtual connection in the wiring harness between water quality testing board P5 and main control board J4 of main console.
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