///////////////////////////////////////////////////////////////////////WARNING//////////////////////////////////////////////////////////////////
These procedures require the machine to be connected to the power supply. The voltages of the
electronic circuit are very low, but HIGHER VOLTAGES ARE PRESENT IN THE UNIT. Do not
touch anything but the tester while the unit is being checked out. Make all connections to the
circuit board with the ELECTRICAL POWER OFF.
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
INSTRUCTIONS FOR USING TESTER, model FC1 (Optional, order part no. A33942-001)
(These instructions assume that the unit will not run, and prior investigation of electric power,
controls, and mechanical parts indicates that the electronic circuit may be at fault.)
If the "NO WATER" indicator is lit, but inspection shows that the water level in the reservoir is
above the top of the water level sensor, OR the "BIN EMPTY" indicator is off while inspection
shows that the ice level sensors are properly aligned, clean and not obstructed, use the tester as
follows:
Bin Control
Note: All testing is done with the
electrical power on, the master switch on, and all
reset switches “reset”.
1. Unplug “photo trans” and “LED” connectors from
the circuit board.
2. Plug “photo trans” and “LED” connectors from
the tester into the circuit board.
a. Move the “bin full” switch on the tester to Full.
The light on the tester should be ON.
If the light on the tester is not on, the circuit board
should be replaced.
b. If the light on the tester IS on, move the “bin
full” switch to Bin Empty. The light on the tester
should go OFF, and the Bin Empty light on the
circuit board should go ON.
If the Bin Empty light is ON, wait 10-20 seconds for
the machine to start, if the machine starts, replace
the ice level sensors.
If the Bin Empty light does not come ON, the
circuit board should be replaced.
CIRCUIT BOARD TESTING
LED
SWITCH TO
"FULL"
PHOTO TRANS
LIGHT GOES
ON
SWITCH TO
"BIN EMPTY"
LIGHT GOES
OFF
LIGHT GOES ON
FM2402RH
August 1992
Page 26
