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Design
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Features
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Performance
DO NOT service the unit until the main electrical power has
been disconnected.
!
DANGER
!
TROUBLESHOOTING
Before servicing this unit, take readings from the electronic control (refer to The Electronic Temperature
Control for checking actual temperatures if needed). These actual readings are important to take before
having the drawers open for more than 30 seconds to obtain accurate readings.
Refrigerator temperature: __________
This temperature should be approximately 38°F. Slight fluctuations are common during normal
operation.
Freezer temperature: __________
This temperature should be approximately 0°F. If this temperature is between -10°F and +5°F, this
should be considered normal. The temperature can fluctuate in order to maintain an optimum
refrigerator temperature.
Ice maker temperature: _________
The ice maker will harvest when this temperature reaches 15°F. Temperatures may rise to 50°F
during an ice harvest and drop -10°F during ice storage mode.
If there is a dot illuminated above the temperature display, there has been a problem with the thermistor. If
you can read the actual temperatures then the problem has been corrected. If you were unable to read the
temperatures or if you read 159, then the thermistor is not working and the circuit board and thermistors
must be changed. The thermistor harness is matched to the circuit board and these must be changed as an
assembly.
1. Not making ice
• If temperature reading was above 15°F, the unit will not make ice. Possible causes for this could be
a leak in the system or the drawer left open.
• If temperature reading is below 15°F, the unit should produce ice. If there is no ice in the mold,
check the water fill and water connection. If there is ice in the mold and it did not harvest, close
the freezer drawer, unplug the unit and plug it back in. If the temperature is still below 15°F, the
unit should harvest (drawer must be closed). If the freezer drawer opening caused the ice maker
temperature to go above 15°F, wait until it goes below 15°F.
To harvest ice, the bin arm must be in the down position and the drawer must be closed to engage
the ice maker/light switch, mounted in the liner. When the ice maker reaches 15°F, the circuit
board will close a relay for 30 seconds, energizing the ice maker. When the ice maker rotates to
approximately the 2 o’clock position, it will continue the cycle under its own power and break the
circuit to the control board.
If the ice maker does not harvest after unplugging the unit and plugging it back in, try again and
watch the circuit board to verify the relay energizes by checking the green LED on the board (on
this model you can also accomplish this by using the ON/OFF switch). If the ice maker does not
harvest, but the LED illuminates, check the bin arm circuit and the ice/light switch circuits.
• The ice maker relay will only energize a maximum of one time every 75 minutes of operation,
even if the temperature is below the 15°F harvest temperature. To harvest ice you must unplug the
unit and plug it back in (can use the ON/OFF switch) so that the timer on the circuit board is reset.
The timing circuit ensures that proper cubes are formed before allowing the ice harvest.
CO2075DWR