Mistral – yet another – sorry

[RascalRuss]

Hey Guys,

Need some advice here, yes another Mistral problem (FF72P)

I am going through the same problem thats been posted a million times over.

My freezer works fine at a lovely steady -22C. However, the fridge is at ambient. I have defrosted (24hours) and started again, then it worked fine, -22 in the freezer and +4 in the fridge. However, over night it packed up again. Checked behind the freezer panel and it had built up ice.

Now its not a build up of ice in the airflow tubes. Instead its across the top of the evaporator, along the fins. This forms a row of frost/ice that stops the air flow getting below it and therefore up the flow tube.

Now I have done a number or tests and have the following.

*Thermistors are ok
*There is continuity through the red blocks on the evaporator (I’m presuming these are thermal fuses?? These read about 0.1 ohms resistance on the volt meter which is low and very good
*There is continuity through the wires that enter in to a metal tube on the evaporator and twists its way down the back and up the front of the evaporator (I’m presuming a heater of some sort) This has 230 ohms resistance, so not open circuit.
*However, there is NO continuity through the heater cable that is attached to the sheet metal front panel at the bottom. Its a twist of cable across the bottom of this plate. This is open circuit and I’m guessing blow.

Question is, would this cause the over freezing and frost forming on the top of the evaporator??

Many thanks

Russ

[Author]

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