Note:
*A thermistor temperature of 26.6°F (-3°C) will start 8 minute freeze completion timer.
*A thermistor temperature of 44.6°F (7°C) will start the 50 second defrost completion timer.
*26.6°F (-3°C) = 6.8KΩ thermistor resistance.
*44.6°F (+7°C) = 4.5KΩ thermistor resistance.
Throughout the freeze cycle, which normally last 14~33 minutes, depending on model and operating conditions, the unit will continue to circulate the water from the reservoir to the horizontal evaporator,
through the spray tubes. When the temperature of the evaporator has reached approximately 26.6°F (-3°C) and the thermistor signals approximately 6.8KΩ the freeze completion timer will start and count down 8 minutes.
The control board will then switch to normal harvest, re-energize the X2 relay and de- energize the X1 relay. This opens the hot gas valve and water valve and de-energizes the condenser fan motor and water pump. A normal harvest is temperature and time terminated and uses the same thermistor used to terminate the freeze cycle. After the evaporator warms to approximately 44.6°F (+7°C) the thermistor signals the control board with a resistance of approximately 4.5KΩ. The control board then starts the harvest completion timer, which is set at 50 seconds. When this timer completes 50 seconds, it ends the harvest cycle and begins freeze.
The unit will continue to cycle between freeze and harvest until the bin control opens, signaling a full bin or until power is interrupted
