Figure 3-15. 700TC/I-2 Signal Trace Schematic (High Voltage) of Compressor Electrical System
Figure 3-16. SERVICE Flashing Possibly Because of Several Excessive Compressor Run Periods Occurring
length of compressor
run time is monitored
by microprocessor.
Monitor Compressor Run Duration, Displays If Service may be Needed (700TC/I-2, 700TR-2 and 700TF/I-2)
The microprocessor in the models 700TC/I-2, 700TR-2 and 700TF/I-2 senses the 115 volt output supplied to the
compressor(s), monitoring the length of compressor run time (See Figure 3-15). If several excessive compressor
run periods occur, a signal is sent to the SERVICE annunciator on the LCD to flash (See Figure 3-16).
NOTE: A flashing SERVICE annunciator can indicate excessive compressor run or a faulty refrigerator evaporator
thermistor. Diagnostic Mode (covered later in this section) should be initiated to narrow the search for possibilities.
This is also covered in the Troubleshooting Guide section of this manual.
NOTE: To clear a flashing SERVICE error annunciator, the problem must be corrected, then the unit must be
switched OFF and back ON.
NOTE: If the unit is ever switched OFF then back ON, the compressors will not energize for at least three minutes.
This three minute minimum OFF time is used to protect the compressor and its electricals.
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