39 TD 204
Condenser Fan Cycling Control
(Intergal Condenser)
The condenser fan on air-cooled cubers is cycled by the circuit
board. The condenser sensor signals the circuit board when the con-
denser temperature reaches 100°F (38°C) the fan starts and contin-
ues to run until the temperature is reduced to 88°F (31°C).
NOTE: There is no pressure control used to cycle the fan
motor on Intergal Air Cooled Condenser Units.
Harvest Safety Termination
After 4 minutes in the harvest mode, the safety timer in the circuit
board will terminate the harvest mode and place the Cuber back into
a freeze mode. This safety cycle will protect the evaporator etc.
should the product fail to terminate the harvest mode for any reason.
Circuit Board Diagnosis
Turn the power switch off, center position. Disconnect the proximi-
ty switches and thermistors from the circuit board. Remove a sleeve
jumper from the options terminal and place it on terminals 4 and 5
(bottom 2 pins) of the test plug (See illustration on page 40). Turn
the power switch to the “on” position and immediately remove the
sleeve jumper from terminals 4 and 5. The LED indicators will cycle
“on” for approximately 2 seconds each in the following sequence.
1. Red D-5 (error)*
*Will only cycle if ice thickness
(pot) is within factory setting
2. Green D-6 (Condenser fan)
3. Green D-11 (hot gas valve)
4. Green D-12 (water pump)
5. Green D-14 (relay-contractor)
6. Green D-15 (dump valve)
Failure of the LED’s to cycle in this sequence will signal a defective
circuit board.
To Next Page
Loading...
