(ii)After the above step (i), disconnect the float switch leads from the controller board within the first 5 minutes of the freeze cycle.
The unit should go into the defrost cycle after the first 5 minutes ± 20 seconds of the freeze cycle.
(iii)Reconnect the float switch connector to the controller board. After the first 5 minutes of the freeze cycle, disconnect the float switch leads from the controller board.
At this point, the unit should start the defrost cycle.
(iv)After step (iii),
After the 1 minute water supply cycle, the defrost cycle starts.
3)Check the controller board using the controller board’s test program.
The output test switch “S3” provides a relay sequence test. With power OFF, place S3 on and switch power to ICE. The correct lighting sequence should be none, 2, 3, 4, 1, and 4, normal sequence every 5 seconds. S3 should remain in the “OFF” position for normal operation.
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