Three weeks ago the fridge alarmed and temperature start to climb up. Found the cover over the evaporator fully iced. Removed everything and melted the grill ice with hairdryer. Everything worked for 3 weeks, last night alarm temperature again, cover iced. Repeated the manual deice. I saw the deicer resistance, use the opportunity to measure its resistance, removed the connector wires and measured around 25 Ohms. The element seems okay. Let to check other things later. Didn’t know and ignored the thermostat over the grill (found out about it today). I can measure the thermostat on connectors wires 3 (J1) [RY2 STAT] and 5 (J2) [AC4 D-SENS], according to a circuit diagram I found online. Will remove the connectors from the main board first. Last month the fridge went crazy, nothing worked, pressing any key on panel lite all leds. Found two small caps 25uF altered, on the control board. Replaced them, fridge came back to life, so I have already friendship with the control board. Someone can confirm those pins and connectors for measuring the thermostat without disassembling everything again? I am old and fat, very difficult to go into freezer again just to check thermostat. Also, I don’t know if the thermostat should be tripped (open) or closed in normal operation. I imagine that it will trip (open) if defrost (deice) go over temperature, and it must be closed all the time. Am I right? Please help.
The diagram I found online is for MFI2568AEW, not exactly the MFI2569VEM2, is it the same circuit?