F 70 error code indicates some kind of communication problem between the component electronics and the control electronics. Unplug for 30 mins and try it again. Post back the results.
thanks for getting back with me ,problem still accured
OK, check the connector on the MCU for the communication (the connector with three blue wires) on this board is a very unreliable connector that uses the edge of the printed circuit board on one side of the connection instead of a real connector soldered to the board.
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