Failure code
Temperature sensor of the NTC
E3
failure --open circuit.
Temperature sensor of the NTC
E4
failure --short circuit
Supply voltage is below the rated
EL
voltage.
Supply voltage is above the rated
EH
voltage.
EU
Communication error.
Problem
Replace the display board.
Please inspect whether power supply is normal. Power
on after the power supply is normal.
Reinsert the connection between the display board and
the power board.
Replace the power board or the display board.
25
Solution
V.1