Hoshizaki FD-1001MAJ-C Instruction Manual page 36

8) "GM" LED and "COMP" LED are on. Use an object to cover the infrared sensor lens
at the bottom of the icemaker. If the bottom of the icemaker is not accessible in your
application, remove the thumbscrew securing the infrared sensor housing, remove the
housing from the base, then cover the infrared sensor lens. See Fig. 19. The yellow LED
on the infrared sensor turns on. The yellow LED flashes when ice is at the outer limit
of its range and turns steady as ice nears. After the yellow LED turns on (flashing or
steady), the infrared sensor shutdown delay timer starts (S1 dip switch 1, 2, 3; factory
default is 100 sec.). "COMP" LED turns off after the shutdown delay timer terminates.
5 minutes later, "GM" LED turns off.
9) Remove the object covering the infrared sensor. If you removed the infrared sensor
housing from the base, replace it in its correct position and secure it with the
thumbscrew.
10) Move the power switch to the "OFF" position, then turn off the power supply. Proceed to
"II.K.2. Mechanical Backup Bin Control Check."
Infrared Sensor
Infrared
Sensor
Housing
Thumbscrew
Lens
Fig. 19
Infrared Sensor
Model Shown: F-1501MRH-C
36