Pkm IN4-2FZSA Bedienungsanleitung Seite 98

2) Specific Failure & Solution
Failure
The LED does not
come on when unit is
plugged in.
Some buttons can't work,
or the LED display is not
normal.
Problem
No power supplied.
The accessorial power
board and the display
board connected failure.
The accessorial power
board is damaged.
The display board is
damaged.
The display board is
damaged.
~
102
Solution A
Check to see if plug is
secured tightly in outlet
and that outlet is
working.
Check the connection.
Replace the accessorial
power board.
Replace the display
board.
Replace the display
board.
~
Solution B