Evap fan motor cycles on and off It started out cycling about every 2-3 seconds. After a couple of minutes it cycles to the point that it continues to turn, but not a full speed.
1. What causes this?
2. If it is the board, how do I test it to determine that it is the board?
3. If it is a bad motor (?) how do I test this?
I’ve never tested a fridge board or run it through a diagnostic test.
Nothing
- Guest asked 7 years ago
Hi. I am not showing that model number either. I found the same model with either a 4 or 6 on the end but not a 5 like the one you provided. It sounds like you have a faulty Adaptive Defrost Control. This sends power to the evaporator fan motor. As long as your fan motor does not seem seized up, I would say it is the A.D.C board. You could test this by checking for voltage at the fan motor. You should have a steady 120V. If the power is ramping up and down then that is why your fan motor is ramping up and down and would be an issue with the A.D.C. The fan motor seems like it would test fine electrically since it runs, but it could have failed mechanically if the bearings are bad. The fan blade would not spin smoothly or freely it and could be making some noise as well.
- Brian, Ace Appliance answered 7 years ago
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