I have aheavy duty Commercial freezer model number UL4000ECW3. It is not providing and cold air anymore. Went from everything frozen to it just does not work.

SOURCE: freezer works fine but no cold air in refrigerator...

Check make sure evapurator fan is blowing and nothing blocking any return vents in refrigeratro side prevent air from recirclating

SOURCE: cold freezer but nothing freezing

Defrost cycle is not operating correctly.
Have the following checked and replaced if need be.

1. Defrost timer
2. defrost element
3. defrost thermostat
4. Main control board

SOURCE: Fridge Not Working

Your problem could be one of the following:

* compressor
* attachments to compressor (e.g.: relay, capacitor (if applicable) or overload protector)
* refrigerant (e.g.: restriction or leak)
* temperature control assembly

Contact an appliance service company.

SOURCE: GE fridge/freezer on but no cold air

The main board on the back of the unit has gone bad or in lockout. Try unplugging unit for about 30 seconds. Then plug it back in. If it doesn't start the board is bad. wr55x10942 at about 169.00. Hope this helps. Very common GE problem

SOURCE: Freezer is not cold enough to keep ice cream

Hi,

You refrigerator is low on charge....

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heatman101