Wency Pan
Updated at 2023-02-03 01:26:38 UTC

Dear customer,

The "E2" code indicates that you might have an open circuit. Could you please check if the valve is connected or broken? 

You might also want to check whether there are shorted zones or open zones. You just need to use a multimeter to measure the resistance between the common wire and each zone (remove the wires from the slots before testing the resistance). The normal reading would be 20-60 Ohms. If the reading is less than 10 Ohms then you might have a shorted circuit in the solenoid and if it is larger than 80 Ohms you might have an open circuit. 



Netro Support

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