This units Evaporator was frozen over and timer was making an audible clicking noise and would not advance. I took it apart saw evaporator was frozen over, i then ohmed out heater it tested at 33 ohms. I turned off unit, returned next day and replaced timer and defrost bimetal. Got a call saying refer was not cooling again, came out and evap was frosted over again. I know theres a deicing kit for this unit but could this be a sealed system issue as well as a defrost issue? Im going out later to look at frost to determine its pattern. If it was a restriction in SS what kind of pattern would I be looking at? Also, before I came out, customer cleaned his condenser coils and bent all the fins over and I'm wondering if that could cause a restriction.
Any help would be appreciated, thanks.