My Westiinghouse Silhouette Series 2 Frost Free 303 Freezer (Model No. FJ303F) appears to have blown a fan. My electrician is wanting a wiring a wiring diagram to facilitate repair.

Because a freezer only does one thing and that is freeze things, unfortunatly any things that breaks on a freezer causes the same thing. Is it running, does the fan work (frost free) are the shelves melting (non frost free) can you hear the compressor running , is the condensor fan running ?

Hello David - Typically most of the recent manufacture freezers have fan motors, however some are enclose to where you are unable to reach or see it. Are you having a specific problem with your freezer?

Well, it would have helped had you included the actual model number, but without that, if you have a fan that blows air from the freezer into the fresh food compartement, its an automatic defrost design, A.K.A frost free.

The reason your "freezing up in the freezer" is your unit is not automatically defrosting. That part you describe is your defrost control, or at least A defrost control. You said while cleaning the back, safe to assume you meant the outside back of the cabinet? Look for a square plug, either black or white, with the same 3-1plug as the defrost control. But, I doubt that is your current defrost control, maybe the original, but the unit cannot run without the defrost control plugged in. Now, your current defrost control maybe defunct, or your defrost heater element, or bi metal thermostat, the latter two are located in the freezer, one at the top, the other at the bottom of the evaporator coil. Test the continuity through both of these parts, the bi metal t stat at top of evaporator needs to be tested while it is cold. Disconnect one end of the heater element to test its continuity. If both of these test ok, replace your defrost control.

Without any additional info, there are a lot of possibilities:
1. Condenser coil (underneath unit) is dirty and clogged.
2. Compressor is failing. (need A/C tech)
3. Metering device is clogged. (need A/C tech)
4. Refrigerant charge is low. (need A/C tech)
5. Door seal is broken (frost will form around door).
6. Defrost heaters are stuck on (replace defrost timer located underneath unit at front).
7. Condenser fan has failed (underneath freezer on back).
8. Evaporator fan (inside fan) has failed (ice will form on cooling coil).

This should get you started...

If this helps you, please select YES to the first two ratings questions. Thank you, and Good Luck.

Are you frosting up at the condensor or did you mean the evaporator? If its the condensor then make sure the coils are clean. Still then you will need a tech to look at the seale system. If its the evaporator and the heater is ok then it could be the timer or the terminator on the compressor. Most of the time its the timer.

It sounds like the freezer fan(evaporator) is wearing out. This problem is very hard to diagnose because the fan spins but no fast enough to circulated the chilled air thru the freezer and refrigerator. The parts and labor are around $300.00

hi thanks for the question its normal for a frost free freezer to run a long time to keep a good cold temp i don't think you have a problem thanks the appliance doc

Check these two things first.  1.  Is there a thick frost buildup on the back panel at the bottom half of the freezer?  2.  Do you hear the fan running inside the freezer?  Let me know what you find.

Although you say the seal is fine, this is almost certainly due to air getting in. With the door closed check that there isn't a tiny gap with a strip of thin card or plastic. Of course if air is getting in then it must also be getting out somewhere else so probe all around the seal.