This is my first post in a long time; just an electrician trying to learn something as I am being trained to take over for the guy who will be retiring in the near future.
I did not copy the Manitowac model number from today's service call, but the ice maker would not go into harvest. It was pretty obvious (even to a clueless wire-biter) that it was getting a constant signal from the ice probes.
I cleaned the two probe tips with Scotch-brite, ran cleaner thru the water system and sanitized the ice bin. It ran thru 2 harvest cycles just fine.
I do have a couple questions about these ice probes.
1. Disconnecting the probe wires from the mother-board, should the resistance of the probes change from very high (not touching any ice) to zero (contacting the ice) or are they similar to a CAD cell where the board is looking for an intermediate value?
2. What do you recommend to use for cleaning the probe tips?