Running High @ -10 C and should run at -20 C on coldest setting
This is Keesler Air Forse Base. were a hospital and have a Freezer of yours that's not getting cold enouff, it needs to get down to -20 to -25 degrees C on its coldest setting... I checked the fan and its working.. this is model 253.9240410 SN: S407178825 what is the next step in troubble shooting this unit... it needs to get another 10 degrees colder.
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Since the motor is running, the compressor it is connected to must also be running. The compressor is the thing that provides the cooling under normal circumstances. The only thing I can think of as to why you are not getting cooling is that the refrigerant charge has leaked out of the system. I don't know anything about the red lights you mention.
Sounds like the thermostat is not working. Mechanical and electronic thermostats can go bad and cause the freezer to continue running no matter what setting is set on thermostat. When this happens the only setting that will work is turning the temperature setting to off. What is the model number on your freezer? Sea Breeze
Check list: Fans running Compressor cool to the touch Not short cycling (low freon) coils cleaned no air restrictions If all of that is good bypass the control see if it gets down to 0 If it does replace the control
If this is a self defrosting freezer, check amd make sure the evaporator fan motor is running and make sure there is no frost buit up on the back panel. Please let me know if either of these are the case so I can assist you further.
verify that condensers ain't clogged with dirt, condenser fan is running all the time and set the thermostat to the coldest setting. if temperature keeps rising suspect dirty condenser of deficient condenser fan. if compressor runs and no cooling after condenser cleaning. suspect a refrigerant charge problem. hope to be of assisit