Error Displays
These errors will occur at any time during normal operation if a thermistor fails.
•
2 Blinks
- Off Light is blinking twice in repeating intervals – This signals a bin thermistor failure.
Check that the bin thermistor is plugged in to the control box. Check that the bin thermistor is not
open or shorted. Replace the thermistor if it is open or shorted.
•
3 Blinks
- Off Light is blinking three times in repeating intervals – This signals a harvest failure.
Check that the evaporator thermistor is connected to the sealed system tubing. If the thermistor is
plugged in, ensure that it is fully connected to the control box. (The ice maker will operate on a
timed cycle if the evaporator thermistor is unplugged.) Check the resistance of the thermistor. If
the thermistor checks good, then look for a frost pattern on the evaporator plate. The unit may be
low on refrigerant.
Note: The lights will continue to blink after correction until the unit is shut off and then switched back on.
The power cord on the internal drain pump is connected to a 120 VAC wall outlet. The ice maker is then
connected to the 120 VAC outlet on the drain pump. If the drain pump fails, or if the drain becomes
blocked, power is shut off to the 120 VAC outlet on the drain pump.
When the unit is first plugged in, the drain pump will run for 20 seconds. The power can be
disconnected and reconnected to verify that the pump is operating properly.
Water from the ice maker reservoir, or melting ice from the bin, drains down the bin drain tube into the
pump inlet, and then into the drain pump chamber. As the water level rises, it bridges the “full” contacts,
and the pump starts to run. The pump discharges the water through the outlet and the check valve.
When the “full” connection is removed, the pump runs for an additional 12 seconds to empty the tank.
If the water level in the drain pump continues to rise, due to a slow or blocked drain, or a blocked vent
hose, and touches the “overfill" contact, power will be turned off to the drain pump’s 120 VAC outlet,
causing the ice maker to turn off.
July 2007
Page 12
CS0415
Service Manual
