Refrigerator evaporator not defrosting, Freezer evaporator is fine.
Unit has no FF defrost heater. I have replaced the evaporator sensors.
Could this be a fan issue since it uses the fan and refrigerator air to defrost?
It seems to work fine after defrosting manually.
2-4 weeks later, I'm back defrosting it again.
I'm thinking fan or board.
(This is a bottom freezer, French door, dual evaporator unit)