Scotsman CME1202 - Manual (Page 29)

Sonar Service Diagnosis
 Step 2: If it is a sonar problem, check the
board.
–
12 volts to board.
 If not, check the transformer.
–
When ice is called for, the
relay contacts are CLOSED.
 Check the relay on the board. COM to NO should be closed.
If they are open, REPLACE THE BOARD - NOT THE
TRANSDUCER