Part Number STH034 3/12 95
OPERATION IN THE CLEAN/SANITIZE CYCLE
During the weekly cleaning/sanitize cycle, the
evaporator fan motor relay and the condenser fan
motor/compressor relay are de-energized. The relays
cannot energize until the clean/sanitize cycle is
complete. Upon completion of the clean/sanitize cycle,
the relays will energize, provided the conditions listed
in normal operation are satisfied.
ADAPTIVE DEFROST
After 3 hours of cumulative compressor run time, the
compressor will be de-energized for fifteen (15)
minutes.
HIGH TEMP ALARM
High temp alarm will display when product thermistor
is above 42ºF for 30 minutes and the following
conditions are satisfied:
• 3 hours since power is applied
• 1 hour since cleaning cycle
Error display will reset when the temperature reaches
41ºF or below.
THERMISTOR FAILURE
If the microprocessor control board receives an open
or shorted cabinet thermistor signal, the following will
happen:
1. A fault is displayed on the LCD screen
- Cabinet sensor open
Or
- Cabinet sensor shorted
2. The microprocessor will initiate a default
sequence for the refrigeration system - 12
minutes on, 3 minutes off.
3. The default cycle continues until the fault is
corrected or power is disconnected. Refer to
Cabinet Temperature Thermistor for diagnostic
procedures.
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