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Re: Unit not freezing , evaporator fan wont run
If this is a Bev-Air, don't think the door switch will control the fan. At the evap, there is a temp sensor called a fan delay. When unit goes into defrost mode, this warms up. Some also serve a dual purpose. It will terminate the defrost cycle at a certain temp., say 51 degrees or so, at the evap. Anyway, when unit comes out of defrost, it keeps the fan off so it allows the evap to cool quicker and to prevent circulating warm air. This could be your problem. Not a hard fix but they can be a pain sometimes. Outside chance that the unit is low on refrigerant (freon). This will not let the evap get cold enough to trip the sensor back into position to turn the fan on. Good Luck. Restaurant Parts and More carry alot of Bev-Air stuff. 1-888-814-1110. Ask for Rick
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If you have just turned it on it takes awhile for the fans to come on. The evaporator coil has to get cold about (10 to 20 degrees) and make a klixion fan switch to turn the fans ON.... Is the evaporator coils getting a frost pattern on them??? If not then the system may be low of Freon.. If the coil is completely froze up and you are getting frost back to the compressor..... then you have a bad fan switch or a door switch.... If you have a wiring diagram you can trace out the wiring.... It is usually down by the compressor or control panel... hope this helps.
Hi, If the evaporator fan in the freezer is not running, more then likely the motor has failed. The compressor will run and run because the thermostat control is never satisfied. If you have a volt meter you can check to see it there is power to the motor, 120 volts, but I would say that if it does not run, it is faulty and you must remove and replace it. If you do this on your own, take out the old motor and write down all of the information you can from the unit also. Model, serial, and name of unit. This will help if the appliance parts house needs to cross it over to a different motor. Keep me posted. Sincerely, Shastalaker7
Possible bad thermostat. You can disconnect the thermostat, take a jumper wire and plug in where the thermostat goes. This will tell the unit that the unit is turned on. If the freezer freezes, then it is the thermostat and it needs to be replaced. They can be purchased from an appliance supply house. Do not run the unit with the jumper wire or the compressor will run and not shut off.
Good day, When the thermostat is turned on, the fan and compressor should come on and start at the same time. If the compressor continues to run and the fan doesn't, then the fan motor or the wiring to it are suspect.
Quote (The fan motor is o.k ). I doen't know how you tested it, but it still remains suspect, since the thermostat sends power to both of them at the same time.
First, make sure the refrigerant coils underneath the unit are not dirty. If so, clean them off.
Second, make sure the compressor (underneath the refrigerator) is running.
Third, make sure the compressor fan (underneath the refrigerator close to the compressor) is turning. This fan should always be turning when the compressor is running. It removes heat from the refrigerant coils and transfers it to the outside.
Fourth, make certain the evaporator fan (in the freezer, likely behind an access panel) is turning.
All of these conditions must be present for proper cooling.
The fans are controlled with a clixon that has a cut in at 5 degrees, and cut out at 20 degrees. If the unit is running and the fans are not comng on then I would have to say you are out of freon. But your condensor fan could be running and the compressor NOT be running which could be a problem with your compressor. Find out if your compressor is running by taking an amp draw. If compressor IS running then you are low on freon. If the compressor is running and your evaporator coil is cold and your fans AREN'T coming on then your clixon is bad.
Usually the compressor runs pretty warm anyway. However if you think it's too hot I would start with the condenser coils located either under the unit or on occasion they are located on the back. The air flow across these coils as well as the airflow around the compressor must be maintained. I forgot to ask if the condenser fan is running. Check and make sure that the Fan is running and the air flow is good. Also, When you transported the unit did you move it standing vertically like it normally stands or did you lay it on its side. If you transported the unit on its side you must wait a minimum of 24 to 48 hours prior to start up or the unit could be ruined permanently. The refrigerant has to be utilized through the compressor as a gas. If the unit is on its side liquid refrigerant could be introduced into the compressor and can cause permanent damage. If this is the case I recommend that you turn the unit off at once and wait the 36 hours for the Refrigerant to settle then try it again. This transportation rule applies for any appliance That uses refrigerant, Air Conditioners etc. These units are not that hard to diagnose. The only other item that is usually a problem is the defrost timer. It is not very expensive and can also cause some of the same symptoms that you are eluding to. The defrost timer allows the freezer to periodically shut down to prevent the buildup of frost or ice on he evaporator coils and on the inside the unit. If it is defective, then the unit will either run all the time and cause the evaporator coils to freeze up or will not allow the compressor to switch on and it will not freeze like it should.
was the compressor running? if the unit fails to make temp at a given setting and the compressor is running then turning down the cold control will not make it colder. the thermostat is a switch that turns the compressor and fans (if you have fans) on and off. the different settings only change at what temp the compressor etc. turns off. make sense? so listen for that compressor if it is running and the unit is war you have refrigeration system trouble: restriction, low charge, leak, etc...
cant tell you which without more info.