Bottom Freezer Drawer / French Door Fridge
Warm fridge but freezer section fine. I noticed it wasn’t defrosting. Took back panel out of freezer and manually defrosted it. Also vacuumed condenser coils and opened the back of the unit to make sure everything was clean and looking good. Noticed the fan by the compressor was working fine at that point.
Frosted over again in a few days. I ordered and replaced the defrost thermostat and checked the continuity of the heater assembly while I was in there. That tested fine.
Ran diagnostics on the fridge for defrost thermostat, compressor & condenser fan, freezer evaporator fan, thermistor sensors in fridge and freezer, also tested the fridge damper door. All came out fine.
Does it make sense at this point to replace the AP6022400 control board? At $197.01 I’m looking for some advice in case there is something else I should be looking into. It is my understanding that this board controls the defrost timing. Does it seem likely that this could be the problem?
Please Help…I really have no knowledge of such things and am doing the best that I can.