Scotsman ND750 Service Manual page 30

ND750
Circuit Board Testing
Water Level
1. Unplug "water sen" connector from control
board.
2. Plug "water sen" connector from Scotsman
tester into circuit board.
a. Move "water" switch on tester to No Water
position. The No Water light on the circuit board
should go ON. If not, replace the circuit board.
SWITCH TO
"NO WATER"
b. Move the "water" switch on the tester to the
Water position. The No Water light on the board
should go OFF. If not replace the circuit board. If
the light does go off, replace the water level
sensor.
If the Bin Empty light is ON, wait 10-20 seconds for
the machine to start. The machine should start.
LIGHT ON
WATER SENS
January, 1989
Page 30
SWITCH TO
"WATER"
LIGHT OFF