Hi. The contents of my freezer was thawing out and would refreeze. Loads of ice on the back panel. Discovered charred wire to lower heater element, repaired same but heater would not come on during defrost cycle. Removed defrost thermostat and heater now works. However original symptoms persist. I am going to order a thermostat but as defrost timer seems to work oK. I thought freezer should behave OK. Condenser coil is well frosted up and temp in freezer is approx. -5deg. C and the fridge wont go below +8deg.C. The cover over the fan /coil unit is removed for now. Q1. Would this affect the performance of the fridge due to the way the fan circulates cold air from freezer. Q2.Will a new thermostat restore my fridge to correct working condition?...Thanks..Mark
ANSWER Hi Mark. The defrost thermostat has to ohm closed (o-ohms) at 0°. It may check OK, but then fail to perform under the normal operations mode because of internal contact arcing issues. It also as importantly has to open to protect the cabinet from melting and also from freezer food burn. Defrost part # WR50X55. The defrost timer will control the 6-1/2 hrs of compressor run time and then the 20-25-minutes of defrost occurs. Part # WR9X482. No, the evaporator coils cover directs the coil air with the evaporator fan properly in a side and front circulating manner for proper performance. Thank You.
Answered by AppliancePartsPros.com | Saturday, March 31, 2012