My Bosch upright fridge is not defrosting & has a wall of ice on the back. The fan does not appear to be working either. Is that the problem? - cant remember how often I see the fan working now!Thanks
I kind of doubt that the fan is the problem. On my refrigerator, when it goes on defrost, the fan shuts off. They don't want it blowing heated air on the milk. Yours might be different.
I don't know this particular frig, but evidently the defroster doesn't work. Perhaps the fan doesn't work also, or perhaps the fan would work if the defroster were fixed.
There is a defrost timer, under the frig, accessible from the front. You can turn it with a screw driver. Turn it till you hear a click. If the timer hasn't been turning, that should turn on the defroster, a heating element nested among the freezer coils. Wait half an hour and if it is defrosting, water should be dripping into the drip pan underneath the frig. If so, then replace the defrost timer and you're good to go.
If that doesn't make it defrost, then the problem is probably the defrost thermostat, in with the freezer coils. When the frig defrosts, the defrost heater stays on until the defrost thermostat gets warm. It should be open circuit while warm. But if it is open circuit while cold, it is bad and is the cause of your defrost problem.
If you open up the freezer coils, use a hair dryer to defrost. That is safer than hot water.
I think that when the defrost heater is turned on, then the fan is
likewise turned off. The defrost thermostat, I think, is doing it's
job, letting it cool again. But the timer is stuck. Or something???.
Hope you can fix it.
Aug 18, 2008 |