Freezer Coldroom

[eurocooling]

hi all have a small freezer coldroom the evaporator is all frozen on the coil and expansion valve compressor all running gas is fine any ideas ?

[ozzy bill]

defrost ????

[charlie patt]

defrost /door left open/ drain issues/ tev set up/ more info needed int tev or exernal /settings defrost length and time/ refrigerant/ digital df or manual timeclock, heater amps

[devlin maguire]

I have mentioed this before, are they, the owners loading it with fresh produce IE anything that is not frozen, I have had to expain many many times to customers it's not a freezer it's for frozen storeage yes prouce will eventually freeze and by the time the fan has lifted all the warm moist air around the coil a few times you will get ice,that and all the other things mentioned, are also valid
Dev

[install monkey]

evap fans running,contactor welded on compressor,relay on digital controller welded,polythene wrapping on inlets,overloaded with produce,bad air circulation from restricting airflow? door seal not sealing properly.faulty drain heater,blocked drain,electric defrost heaters burnt out/end blown off-unload it,defrost it and start at the beginning.compressor shouldnt start up until the red led on the controller is solid.fans should spin the same way.clip current and inspect heaters.

[Brian_UK]

You say gas is fine, is it fine when coil is frozen or after you defrosted it and got the room to temperature?