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I have an ageing Zanussi ZNB323S Fridge Freezer which has been icing up on the underside of the plastic roof in the frost free freezer compartment, although it keeps around the required temperature -18-24C. As a possible consequence of this the fridge has difficulty in maintaining its temperature and seems to be rising up to 10C or above. The automatic defrost in the fridge is working fine, frosts up on the back wall when compressor running and defrosts when the compressor stops.
I have just turned off the appliance for over 24 hours to allow the freezer to completely defrost (the ice had been quite solid). Both drain hoses are flowing and do not appear to be obstructed although I cannot see where the freezer hose inlet is, only the outlet (at the rear).
On switching on the Freezer goes down to correct temperature in around an hour but the fridge can take 4-6 hours to get to around +5C.
Further info on appliance:
Type CBFF320. Product Code: 925033432.00Re: Zanussi ZNB323S Fridge Freezer problems
It’s water in the freezer then.
It is entirely possible that the insulation between the two is starting to go which, I’m afraid, would be terminal.
On a fridge freezer of that type I can’t think of another reason unless someone knows something I don’t.
K.
Re: Zanussi ZNB323S Fridge Freezer problems
Thanks for response, as the drain from the fridge appears to be working, where is the water coming from to enter the freezer?
Re: Zanussi ZNB323S Fridge Freezer problems
Condensation forming on the roof of the freezer, not from a drain.
K.
Re: Zanussi ZNB323S Fridge Freezer problems
If I explain in slightly more detail, the ice that formed in the freezer was in fact on the underside of the plastic ‘plate’ which sits below the ‘evaporator’ which is located under the top of the freezer compartment.
Apologies if this sounds like I am trying to teach something, not the case, I just think maybe I did not explain it clearly enough on my first post.
For further information, since defrosting the appliance and switching back on which was some 36 hours ago, no ice has yet formed on the plate below the evaporator. But the fridge is still struggling to get down to +5C, frost/ice bits form and auto-defrost on rear plate of fridge compartment.
Given the extra information does this change your opinion?Re: Zanussi ZNB323S Fridge Freezer problems
Update following manual defrosting. After some 5 days with the appliance running and having had little success with the fridge section maintaining a temperature of +5C, with the various adjustments to the ‘thermostat’ control the freezer was generally at -20C to -25C. These temperatures were only measured with shop bought thermometers. Anyway the good news for the present is that the appliance of science has decided to more or less work correctly and the fridge is maintaining the correct temperature albeit the freezer is too cold. I have been searching this websites help pages for the name or the better type of thermometer to check fridge freezer temperatures. Remember reading it back cannot now find it. The joy of a failing memory.
Re: Zanussi ZNB323S Fridge Freezer problems
The appliance of science has now been running for nearly three weeks, the fault now seems to have changed? Both the fridge and freezer are now showing too low temperatures, the fridge nearer to Zero C and the freezer 25 to 30 C, measured on shop bought thermometers. I have tried the Control setting in the Fridge from 4 down to 1, does not appear to make a lot of difference?
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