« Last post by weall on July 23, 2016, 03:59:03 PM »
I am trying to figure out what is going on with a Kenmore 253.28093802 that intermittently gets too warm. When I first opened it up, the outer wall had lots of ice and the evaporator coils were all frozen over. I found that the thermistor was giving wildly inconsistent OHM readings and replaced it. Everything worked fine for a couple of days, but now the freezer often gets warm again.
I am having difficulty interpreting the evaporator coil frost pattern and diagnosing the start relay for the compressor.
The evaporator is short, making it difficult for me to determine whether the visible fade in frosting (see attached image) indicates a leak or is normal fade associated with proximity to the heater.
The PTC relay gives proper OHM resistance, but makes a very slight click noise when shaken. It is less a rattle than a single click. If the parts inside the relay were broken, would it still give proper multimeter resistance readings?
Thank-you for any advice/expertise/opinions you can offer.