Commercial freezer is not freezing the way it should, temperature stays around 15 degrees

REC means recovery. It is trying to make temp and is not. Could be frozen up evap, no fan running, door not closing, issues with the refrigeration system.

This is normal. All commercfial freezers must defrost 3 to 5 times a day, or they will freeze over at the coil and then stop freezing. A timer in your freezer turns off the compressor and turns a heating element on for 10 to 15 minutes. During that time the coil heats and melts frost from the coil. Usually within 30 minutes the temperature will briefly rise to 20 t0 25 degrees F and then quickly drop down to 0 degrees F. The food rarely defrosts in this short period of time..

pull the plug and let it defrost. ck the drain for water. it maybe pluged. after 2 to 4 hrs. plug it back in and set the temp. to -10 degrees f . fill small dish or bowl with water and see how long it take to freez. if it takes longer then 4 hrs you may need freon or have a compreesor problem, or defrost timer .

If unit keeps proper temp. then I would think that either the thermometer sensing probe may have been damaged during the repair process or the thermometer itself has failed.

Have a look at the Make and model of your thermostat and download the Instructions from the internet or give ur local refrigeration mechanic a call and ask him they are easy to set

DO NOT TRY TO MODIFY TIMING CYCLE.you would need to completely modify printed circuit board and inbuilt computer......some freezers cycle around 6 to 8 hours.the temperature can only be checked say every 12 hours to get an average reading

Normally freezers are kept at zero. Most health departments will not allow the temp to be higher than plus 10. If you want to store ice cream, you need to be at minus 10 degrees to minus 15 degrees.

let me know if I can be of any further help.

What temperature is the ambient air?
Mine froze up if the ambient temperature was less than 70 degrees F.

In most cases, an evap that freezes up is either an air flow problem or no defrost cycle. Older Hobarts have mechanical defrost time clocks. It could be locked up i.e., not running so no defrost cycle.
It could be coming out of defrost too early because the sensor that monitors the evap temp is not working properly.
The door could not be closing. If left cracked open, it will freeze up every time as unit never hits temp., keeps unit running. Warm air is seeping in and the moisture freezes on evap.
Lastly, the defrost heater(s) may not be working. Burned out, shorted, broken wire, etc.

Good luck and hope this helps.

check compressor is turned on. if compressor is going, you either have a system or compressor fault and this is not diy if compressor not going, possibly a thermostat fault. in this case put on fast freeze to confirm