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.
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
SWITCH TO
“NO WATER”
LIGHT OFF
SWITCH TO
“WATER”
CIRCUIT BOARD TESTING
NM650
January, 1991
Page 31
