TROUBLESHOOTING INPUT OPERATIONS
The following few pages explain troubleshooting input operations performed at the control panel. The input opera-
tions described are Diagnostic Mode, Manual Component Activation Mode and Temperature Log Recall.
Diagnostic Mode
Initiating Diagnostic Mode allows the Service Technician to observe real-time temperature readings from all thermis-
tors without temperature averaging. If errors were registered by the thermistors or the defrost system, “Error Codes”
will also be displayed during diagnostic mode.
To initiate Diagnostic Mode, the unit must be ON, then press and hold either
COLDER key, and press the UNIT
ON/OFF key, then release both keys (See Figure 3-37). If no error codes are registered, the left display area will
show real-time temperature of the thermistor, the right display area will show the thermistor location code, and all
LCD indicators will illuminate. Pressing either
COLDER key or either WARMER key while in Diagnostic Mode will
toggle to the next or previous thermistor location, respectively. (See Figure 3-38, 3-39 and 3-40)
NOTE: If the COLDER and UNIT ON/OFF keys are pressed and held for 10 seconds, Manual Component
Activation Mode will be initiated (this is covered later in the section).
NOTE: Diagnostic Mode will end 20 seconds after the last key stroke.
Figure 3-37. Initiate Diagnostic Mode - Press and Hold Either
COLDER Key, Then the UNIT ON/OFF Key
(“F” Indicates Freezer Compartment)
Figure 3-38. Toggle Through Temperature Readings - Press Either COLDER Key or Either WARMER Key
(“r” Indicates Refrigerator Compartment)
Figure 3-39. Toggle Through Temperature Readings - Press Either COLDER Key or Either WARMER Key
(“FE” Indicates Freezer Evaporator)
Figure 3-40. Toggle Through Temperature Readings - Press Either COLDER Key or Either WARMER Key
(“rE” Indicates Refrigerator Evaporator)
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