U-Line 2115WC, 2275DWRWS, 2175WCOL, 2275DWRWOL, CLRCO2175 Error code is repeated, the thermistor is

Section 3 - Service and Repair

THERMISTOR OUTAGE

In the event that the condenser thermistor (T4) fails, the unit will stop all functions and display “ER” on the user interface. The exact error can be accessed via the service mode.

If the refrigerator thermistor (T1) fails, the refrigerator will stop operation; however, the ice maker will continue to function. The display will show “ER.” The exact error can be accessed via the service mode.

If the ice bin thermistor (T2) fails, the ice maker will stop functioning; however, the refrigerator will continue to work. The display will show “ER.” The exact error can be accessed via the service mode.

If the refrigerator evaporator thermistor (T3) fails, the unit will function normally; however, defrosting will occur on a timing interval instead of timing and temperature. The display will show “ER.” The exact error can be accessed via the service mode.

SERVICE

The CLRCO2175 model uses seven relays and four thermistors. There is a variety of built-in servicing features to aid in diagnosing the root problem associated with a unit.

To check to see which relays are currently operating, hold the COLDER key and press the ON/OFF key three times. When entering the sequence keep the COLDER key pressed until you completely release the ON/OFF key for the third time. The display will cycle through a series of numbers to tell which relays are energized. For example, if the unit was in ice-making mode, the display would show 11 20 31 40 51 60 70. The first number is the relay number. In the second number, 1 means ON and 0 means OFF. The relay information can be found in the Control Section.

Each relay can also be turned on and off individually to determine whether or not the board and component are operating. If a board is suspected of not operating correctly, you can run through this sequence to ensure each component is turning on and off through the board correctly. Go into service mode and choose option #22. This will cycle every relay on and off showing 10 11 20 21 …. If a

component fails to turn on when the relay does, you can verify if there is voltage present by using a voltmeter to check the board output.

To view the actual refrigerator (T1) temperature, hold the WARMER key until the actual temperature is displayed. To view the actual thermistor readings for 2-4, hold the WARMER and COLDER keys for about five seconds. The display will cycle through the three thermistors and their temperatures. If a thermistor is unused in a unit it will show a “0” reading. For thermistor 4 the display will only show up to “99.” In the event the temperature is higher than this, the display will show a flashing “99.”

In the general section the methods to enter some other service modes are available. For the CLRCO2175 model some useful modes are the ICE MAKER OFF MODE, FORCED REFRIGERATOR DEFROST, ICE THICKNESS ADJUST, CLEAN, AND TEMPORARY SHUTDOWN MODE. These can be useful in servicing the unit.

TROUBLESHOOTING:

Error Codes

E1, E2, E7, E8, E9	Bad thermistor errors. Replace thermistor.
	Check for thermistor errors by accessing
	“View thermistor # status (2, 19, 20, or 21).” If
	the error code is repeated, the thermistor is
	open or shorted. If a temperature is displayed,
	the thermistor is not defective.
E3	This will be accompanied by a beep every
	minute. This signals that the door has been left
	open for longer than 20 minutes. Close the
	door to reset. If the light and display do not go
	off when the door is closed, check to make
	sure the magnet is positioned properly.
E5	This signals that the unit has been above set-
	point for more than twelve hours by at least
	10°. If the unit was just plugged in leave for 24
	hours to see if the problem is corrected. If it is
	not corrected, it is most likely a refrigeration
	system issue.
E6	This signals that the refrigerator section has
	been at least 10° below set-point for at least
	twelve hours. This would most likely be caused
	by a bad relay and the circuit board.
P1	Pump circuit is detecting a drain problem.
	Consult a plumber to resolve the issue. If unit
	does not have a P60 installed, then the jumper
	wire is missing in place of the pump.

After checking the errors, be sure to clear the error log by performing service option 12.

No ice

Check the ice bin temperature. If temperature is in the 34-35°F range the unit is shut down due to low temperature inside. This could be caused by low ambient temperatures or running the unit without a water supply attached.

If the ice bin temperature is above 35°F the unit should be producing ice. Check to ensure the water trough is full and the pump is operating. If the components are not operating, see the service section above.

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